MEASURING INSTRUMENTS, MEASUREMENT METHODS AND MEASUREMENT PROGRAMS

Abstract

A measuring apparatus includes a measuring unit (2) having two or more first measuring units (11) configured to measure, by the first configuration, a value corresponding to the electrical conductivity of a cable path branching from a cable path to be measured to which a star-connected three-phase AC power source is connected, a second measuring unit (21) configured to measure, by the second configuration, a value corresponding to the electrical conductivity of a cable path branching from a cable path to be measured to which a star-connected three-phase AC power source is connected, a third measuring unit (31) configured to measure, by the third configuration, a value corresponding to the electrical conductivity of a cable path branching from a cable path to be measured to which a delta-connected three-phase AC power source is connected and a fourth measuring unit (41) configured to measure,with the fourth configuration, the electrical values ​​related to the cable lines of the cable lines branching from the cable line to be measured to which the delta-connected three-phase AC power source is connected and the selection processor (51) is configured to select one of the measurement units on the measurement unit (2).,

Description

MEASURING INSTRUMENTS, MEASUREMENT METHODS AND MEASUREMENT PROGRAMS Invention Engineering Field This disclosure relates to measuring instruments, methods measurement and measurement program to measure the values ​​that related to electricity on cable lines. Background of the Invention The electricity supply system for every house or The factory includes a three-phase AC system (hereinafter referred to as the system) three-phase) and single-phase AC systems (hereinafter referred to as the system) one phase). A single phase system is a frequent system used in general houses where the voltage is low and no high voltage is required because the number of cables is small. Because a three-phase system can obtain the same power as smaller current compared to a single phase system, this system often used, for example in factories that use lots of electricity, with less electricity because of the power the same can be obtained with a smaller current compared to with a single phase system. For example, in a factory that uses AC power sources three-phase, in the case of equipment that will be powered by power If one phase is used, then it is necessary to carry out a three-phase power conversion. phase into one phase and distribute single-phase power. Patent Document 1 discloses a technique for converting three AC outputs phase from a three-phase three-wire AC power source to a single-phase AC phase with a phase conversion transformer. It is important to measure a value (hereinafter referred to as the electricity related value) Cable lines) related to electrical cable lines and check whether the electrical values ​​of the cable line are within normal range to continue to ensure safety. LITERATURE LIST OF PATENT DOCUMENTS Patent Document 1: Unexamined Japanese Patent Publication No. 2021-162234 Brief Description of the Invention (Technical Issues| Here, even in cases where three-phase power is converted into single phase power and distributed single phase power as explained above, there is a demand for measurement accurate electrical values ​​of cable lines. The purpose of this disclosure is to provide a tool measurement, measurement methods and measurement programs that are capable of accurately measure the electrical values ​​related to the cable lines of the circuit single phase in cases where three phase power is converted into single phase power and distributed single phase power and load placed in a single phase circuit. (Solution To Problem| To achieve these objectives, this disclosure provides the following configuration. (1) Measuring instruments include a measurement unit that includes two or more units of measurement configured for the first measure, with the first configuration, a value related to electrical cable channels which are related values with electricity a cable channel that branches from a cable channel that is being measured where the AC power source is three star connected phase is connected and branched from AC three phase to single phase AC and distributed, second unit of measurement configured to measure, with a second configuration, the value related to electrical cable lines which are related values with electricity a cable line that branches from the line the cable to be measured to which three-phase AC power source star connected is connected and branched from three phase AC to single-phase AC and distributed, one-third of the unit of measurement which is configured to measure, with the third configuration, a value related to the electrical properties of a cable line which is a value related to the electrical wiring of the cable lines that branch from The cable path to be measured is where the three-phase AC power source is located. delta connected is connected and branched from three phase AC to single-phase and distributed AC and the fourth unit of measurement configured to measure, with the fourth configuration, the value related to electrical cable lines which are related values with electricity from the cable lines that branch off from the cable lines which will be measured where the three-phase AC power source is connected delta is connected and branched from three-phase AC to single-phase AC phase and distributed and selection processor configured to select one one unit of measurement in the unit of measurement. (2) Selection processing choose the first unit of measurement in the case of the first state where the three-phase AC power source is the first phase, second phase, the third phase and neutral line are connected in star connected to the cable line to be measured and the load connected to one of the first phase, second phase, or phases third and neutral channels, choose the second unit of measurement in the case of the second state where the three-phase AC power source is the first phase, the second phase and the third phase is connected in a star to the line the cable to be measured and the load are connected to the first two phases, second phase and third phase, choose the third unit of measurement in the case of the third state where the three-phase AC power source where the first phase, the second phase and the third phase is connected in delta and one of the phases grounded connected to the cable strip to be measured and the load connected to a grounded phase and one of the phases is not grounded and choose the fourth unit of measurement in the case of the fourth condition where the three-phase AC power source where the first phase, the second phase and the third phase is connected in delta and one of the phases grounded connected to the cable strip to be measured and the load connected to two ungrounded phases. (3) The first unit of measurement counts, as a configuration first, the leakage current component caused by resistance ground insulation that is included in the leakage current that flows on Cable strip to be measured based on leakage current and voltage given between one of the first series of phases, second phase, or third phase which is connected to the load and neutral channel, the second unit of measurement counts, as the second configuration, leakage current component caused by insulation resistance land that is included in the leakage current flowing in the path cables to be measured based on leakage current and voltage applied between two phases that are the load is the condition connected, the third unit of measurement counts, as a configuration third, the leakage current component caused by resistance ground insulation which is included in the leakage current flowing in Cable lines to be measured based on leakage current and voltage applied between the phases to which the load is located is the condition connected and the fourth unit of measurement counts, as a configuration fourth, the leakage current component caused by resistance ground insulation which is included in the leakage current flowing in Cable lines to be measured based on leakage current and voltage applied between the phases to which the load is located is the condition connected. (4) Measuring instruments include a unit of measurement which configured to measure electrical values ​​related to the line cable, namely the value related to the electrical properties of the cable line which branches from the cable line to be measured to where the AC power is going three phase (S)star connection or delta connection is connected and branching from three-phase AC to single-phase AC and distributed and a selection processor configured to select one the state of the first two or more states where the resource Three-phase AC where the first phase, second phase, third phase and The neutral channel is star connected to the strip the cable to be measured and the load connected to one of the phases first, second phase, or third phase and neutral channel, the second condition where the three-phase AC power source where the phases first, second and third phases are connected in a star pattern, connected to the cable strip to be measured and the load connected to the first two phases, the second phase and the third phase, the third condition where the three phases (S)AC power source where the phase first, second and third phases are connected in delta and one of its phases is grounded, connected to a cable strip that will be measured and the load is connected to the grounded phase and one of the phases is not grounded and the fourth state where the three-phase AC power source is the first phase, the second phase and the third phase is connected in delta and one of the phases grounded is connected to the cable line to be measured and the load connected to two ungrounded phases and measuring instrument, in cases where the selection processor selects a state first or third condition, the leakage current component caused by the soil insulation resistance included in the leakage current, which is one of the values ​​related to electrical cable lines, flowing in the cable path which will be measured based on the leakage current and the voltage applied between one of the first phases, second phase, or third phase which is connected to the load and neutral channel, in the case where the selection processor selects the second state, leakage current component caused by insulation resistance The soil is included in the leakage current which is one of the values related to electrical cable lines, flowing in the cable lines for measured based on the leakage current and applied voltage between two phases connected by load and in cases where the selection processor selects a state fourth, the leakage current component caused by resistance soil insulation is included in the leakage current, which is one of the one value related to the electrical current flowing in the cable line to be measured based on the leakage current and voltage applied between the phases connected to the load. (5) A measurement method includes selecting, in selection processing step, one of a number of units measurements configured to measure, with different configurations, electrical values ​​related to the path cables which are values ​​related to electricity from the cable path that branches from the cable path that will be measured where the three-phase AC power source (S) is connected star or delta connections are connected to and branched from Three-phase AC to single-phase AC and distributed and perform, in a measurement step, measurement by the unit of measurement that has been selected in the processing step election and units of measurement include two or more, the first unit of measurement configured for measure, with the first configuration, the electrical related values The cable path which is a value related to electricity from The cable path that branches from the cable path to be measured to where the star-connected three-phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed, second unit of measurement configured for measure, with the second configuration, the electrical related values ​​of the line cable which is a value related to the electricity of the line cables that branch from the cable line to be measured to where star connected three phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed, the third unit of measurement configured for measure, with the third configuration, the electrical related values ​​of the line cable which is a value related to the electricity of the line cables that branch from the cable line to be measured to where delta connected three phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed And the fourth unit of measurement configured for measure, with the fourth configuration, the electrical related values The cable path which is a value related to electricity from The cable path that branches from the cable path to be measured to where the delta connected three phase AC power source is connected and branched from three-phase AC to single-phase AC and distributed. (6) The measurement program causes the computer to start select, in the selection processing step, one of a number of units of measurement configured to measure, with different configurations, electrically related values The cable path which is the values ​​related to electrical cable lines that branch off from the cable lines will be measured to where the star is connected or the three AC power source The delta connected phase is connected and branched from AC three phase into single phase AC and distributed and perform, in a measurement step, measurement by the unit of measurement that has been selected in the processing step election and a number of units of measurement includes two or more, the first unit of measurement configured for measure, with the first configuration, the electrical related values The cable path which is a value related to electricity from The cable path that branches from the cable path to be measured to where the star-connected three-phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed, second unit of measurement configured for measure, with the second configuration, the electrical related values ​​of the line cable which is a value related to the electricity of the line cables that branch from the cable line to be measured to where star connected three phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed, the third unit of measurement configured for measure, with the third configuration, the electrical related values ​​of the line cable which is a value related to the electricity of the line cables that branch from the cable line to be measured to where delta connected three phase AC power source is connected and branching from three-phase AC to single-phase AC and distributed And the fourth unit of measurement configured for measure, with the fourth configuration, the electrical related values The cable path which is a value related to electricity from The cable path that branches from the cable path to be measured to where the delta connected three phase AC power source is connected and branched from three-phase AC to single-phase AC and distributed. (Advantages of Invention| According to this disclosure, even in cases where the power three phase is converted into single phase power and single phase power distributed, the electrical values ​​related to the cable lines can be measured accurately. Short Description of Image Figure 1 is a diagram illustrating an example. first configuration of the measuring equipment. Figure 2 is a diagram illustrating an example. configuration of the two measuring devices. Figure 3 is a diagram illustrating an example. third configuration of measuring equipment. Figure 4 is a diagram illustrating the configuration where the selection processor automatically recognizes the status (first to fourth status) connection of a load. Figure 5 is a block diagram depicting the unit configuration. first measurement. Figure 6 is a block diagram depicting the unit variations. first measurement. Figure 7 is a block diagram depicting the configuration. second unit of measurement. Figure 8 is a block diagram depicting the unit variations. second measurement. Figure 9 is a diagram that schematically depicts Ior and Ioc vector representation of each phase in the connection star. Figure 10 is a block diagram illustrating third unit of measurement configuration. Figure 11 is a block diagram depicting the variations third unit of measurement. Figure 12 is a diagram block fourth unit of measurement configuration. which illustrates Figure 13 is a block diagram depicting the variations fourth unit of measurement. Figure 14 is a diagram that schematically depicts vector representation of Ior and Ioc of each phase in the connection delta. Figure 15 is a diagram showing another configuration. from measuring equipment. Figure 16 is a flowchart to illustrate the procedure. A method of measurement. Figure 17 is a flowchart to explain the procedure. other than measurement methods. Figure 18 is a block diagram illustrating an example. first computer configuration. Figure 19 is a block diagram illustrating an example. configuration of both computers. Complete Description of the Invention Embodiments of this disclosure will be described below. This. The embodiments described below do not limit the contents current disclosures mentioned in the attached claims. Not all configurations are described in the embodiment is an important basic element of p single-phase circuit branching (U)to operate a load private electric utility in Japan. load operated by the method can be applied abroad. Figure 1 is a diagram first configuration of measuring instrument (1). measurement (2) and selection processor includes the first unit of measurement from Sebag this disclosure. Method three-phase AC connection used by customers Ian grew up abroad, this and this proposal technique Which (11), illustrate examples Measuring instruments (1) include units (51). Unit of measurement (2) second unit of measurement (21) and the third unit of measurement (31) and the fourth unit of measurement (41). In this example, measuring instrument (1) will be explained with referring to the first configuration example illustrated in Figure 1, but not limited to the configuration examples The measurement unit (2) includes two or more units. first measurement (11), second measurement unit (21), unit third measurement (31) and fourth measurement unit (41). For example, a measuring instrument (la) may include a measuring unit (2a) which only includes the first unit of measurement (11) and the unit second measurement (21) (second configuration example), such as illustrated in Figure 2. The measuring tool (lb) can include unit of measurement (2b) which includes only the third unit of measurement (31) and the fourth measurement unit (41) (example configuration third), as illustrated in Figure 3. The first measuring unit (11) measures, with the configuration First, the value related to the electrical cable line is a value related to the electricity from the cable line which is branched from the cable line to be measured where the source is star-connected three-phase AC power is wired and branched from three-phase AC to single-phase AC and distributed. Although configuration details (first configuration) of the measurement unit first (11) will be explained later, the first unit of measurement (11) calculate, according to the following equation, the leakage current component Ior caused by the insulation resistance of the soil which includes in the leakage current Io, which is one of the related values electric cable lines, flowing in the measured cable lines based on the phase angle @ calculated from the leakage current Io and voltage applied between one of the first phases, phase second, or third phase where the load is connected and the line neutral, Tor — Io x cos@ (1). The second measuring unit (21) measures, with the configuration second, a value related to the electrical cable line which is a value related to the electricity of a Cable lines that branch off from a future cable line measured where the three-phase AC power source is star-connected connected and branched from three-phase AC to single-phase AC and distributed. Although the configuration details (configuration second) of the second unit of measurement (21) will be explained later, the second unit of measurement (21) calculates, according to the following equation leakage current component Ior caused by insulation resistance the land included in the Io leakage current, which is one of the one value related to the electricity of the cable line, which flows in the line cable to be measured based on the phase angle @ calculated from the current leakage Io and the voltage applied between the two phases connected to the load, Ior —- Io x sin@ / cose0” (2). The third measuring unit (31) measures, with the configuration third, the value related to the cable line electricity which is the value related to electricity from cable lines that branch from The cable path to be measured is where the three-phase AC power source is located. delta connected is connected and branched from three phase AC to single-phase AC and distributed. Although the details configuration (third configuration) of the third unit of measurement (31) will be explained later, the third unit of measurement (31) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io, which is one of the related values cable line electricity, which flows in the cable line to be measured based on the phase angle @ calculated from the leakage current Io and the voltage applied between the phases connected to burden, Tor — Io x cos@ (3). The fourth measuring unit (41) measures, with the configuration fourth, the value related to the cable line electricity which is the value related to electricity from branched cable lines from the cable path to be measured where the AC power source is three delta connected phase is connected and branched from AC three phase to single phase AC and distributed. Although the details configuration (fourth configuration) of the fourth unit of measurement (41) will be explained later, the fourth unit of measurement (41) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io, which is one of the related values cable line electricity, which flows in the cable line to be measured based on the phase angle @ calculated from the leakage current Io and the voltage applied between the phases connected to burden, Ior - Io x sin@ / ces30” (4). The selection processor (51) selects one of the units first measurement (11), second measurement unit (21), unit third measurement (31), or fourth measurement unit (41). Here, the operation of the selection processor (51) will described. The selection processor (51) selects the unit of measurement first (11) in the case of the first situation where the AC power source three phases where the first phase, second phase, third phase and neutral line is connected in star to the line the cable to be measured and the load (the load used in one phase) is connected to one of the first phase, the second phase, or third phase and neutral line. Here, the load is related with, for example, lighting circuits and devices that connected to a single-phase outlet. The selection processor (51) selects the second measurement unit (21) in the case of the second condition where the three-phase AC power source where The first phase, second phase and third phase are connected together The star is connected to the cable line to be measured and the load is in the second state where the load is connected to two phases first, second phase and third phase. The selection processor (51) selects the third measurement unit (31) when the AC power source is three-phase where the first phase, the second phase and the third phase is delta connected and one of The phase (T) is grounded, connected to the cable strip for measured and the load is in the third state where the load connected to the grounded phase and one of the phases not grounded. The selection processor (51) selects the fourth measurement unit (41) when the AC power source is three-phase where the first phase, the second phase and the third phase is delta connected and one of This phase is grounded, connected to the cable strip to be measured and The load is in the fourth state where the load is connected to two ungrounded phases. The selection processor (51) can include, for example, a switch turn. When the switch is operated by operational personnel, The selection processor (51) selects the specified unit of measurement. by the switch. The unit of measurement selected by the processor selection (51) is operational. The selection processor (51) may be configured to automatically automatically recognizes the state (first to fourth state) of load connection and selecting the measurement unit according to the results Introduction. Cases where the cable path to be measured is on the side secondary includes four cables will be explained as an example, but this disclosure also applies to cases where the path The cable to be measured includes three cables. Figure 4 is diagram illustrating the configuration in which the processor selection (51) automatically recognizes the state (state) first to fourth) from the load connection. The selection processor (51) includes a switch (52), a a voltage detector (53), a leakage current detector (54) and a controller (55). Voltage detector (53) can be implemented by using one of the voltage detectors (13, 23, 33, 43) which will be explained later. Leakage current detector (54) can be implemented using one of the leakage current detector (12, 22, 32, 42) which will be explained Then. The four channel cables (a, b, c, d) that will be measured in The cable line to be measured is connected to the switch (52). The switch (52) connects two connected line cables. in the cable route to be measured based on instructions switching of the controller (55). Switch (52) and detector voltage (53) is connected via two line cables. The detector voltage (53) detects the voltage applied to the cable channels diverted by the switcher (52). Next, the zero phase current transformer (Ela to 61f) connected to the line cable (six locations in the example) illustrated in Figure 4) drawn from the cable path to be measured. Zero phase current transformer (6la to 6l1f) connected to the leakage current detector (54). Here, the operation of the controller (55) will be described. In the case where the controller (55) switches the switch (52) to select the channel cable (a) and channel cable (b), controller (55) storing the voltage applied between the line cable (a) and line cable (b) and detected by the voltage detector (53) and leakage current is detected from the zero phase current transformer (&6la) which clamped to the lines drawn from the cable line (a) and channel cables (b) that are connected to each other. In this case wherein the controller (55) switches the switch (52) to select line cable (la) and line cable (c), controller (55) storing the voltage applied between the line cable (a) and line cable (c) and detected by the voltage detector (53) and leakage current is detected from the zero phase current transformer (6lb) which clamped to the lines drawn from the cable line (a) and channel cables (c) that are connected to each other. In this case wherein the controller (55) switches the switch (52) to select line cable (a) and line cable (d), controller (55) storing the voltage applied between the line cable (a) and line cable (d) and detected by the voltage detector (53) and leakage current is detected from the zero phase current transformer (61c) which clamped on the lines drawn from the cable line (a) and channel cables (d) that are connected to each other. In this case wherein the controller (55) switches the switch (52) to select line cable (b) and line cable (c), controller (55) storing the applied voltage between the line cable (b) and line cable (c) and detected by the voltage detector (53) and Leakage current detected from zero phase current transformer (6ld) which are clamped on the lines pulled from the cable lines (b) and channel cables (c) which are connected to each other. In the case where the controller (55) switches the switch (52) to select the channel cable (b) and channel cable (d), controller (55) store the applied voltage between the line cable (b) and line cable (d) and detected by the voltage detector (53) and leakage current is detected from the zero phase current transformer (&6le) which clamped on the cable path pulled from the cable line (b) and channel cables (d) that are connected to each other. In this case wherein the controller (55) switches the switch (52) to select line cable (c) and line cable (d), controller (55) store the applied voltage between the line cable (c) and line cable (d) and detected by the voltage detector (53) and leakage current is detected from the zero phase current transformer (61f) which clamped to the lines drawn from the cable line (c) and channel cables (d) that are connected to each other. The controller (55) determines, from the stored voltage, whether star connection (first or second state) or a delta connection (third or fourth state) is created. For example, controller (55) determines that a star connection is made when voltage between phase (R) and neutral (N) (or earth (#)), voltage between phase (S) and neutral line (N) (or line neutral (N) (or earth (E)) is created and the voltage between phases (T) and the neutral (N) (or earth (E)) are essentially the same thing. each other. The controller (55) determines that the delta connection created when there is a difference between the voltages between the phases (R) and earth (E) and the voltage between phase (S) and earth (EH) or when there is a difference between the phase (T) and earth (E) voltages and the voltage between phase (S) and earth (E). In the event that the controller (55) determines that the connection a star is created, when the load is connected to one of the phase and neutral line (N), controller 55 recognizes the state mentioned as the first condition and when the load is connected to one phase and neutral line (IN), controller (55) recognize such a state as the second state. Here, measuring instrument (1) may include a first switch which configured to indicate whether the load is connected to one of the phases or not and the neutral line (N). A the user checks the state of the connection and turns on or turns off the first switch. The controller (55) determines that the load is connected to one of the phases and the neutral line (N) when the first switch is in the ON state and determines that the load is not connected to either phase or neutral line (N) when the first switch is in the OFF position. In the case where the controller (55) determines that the delta connection has been is created, if the phase includes phase (S) which is clamped by zero phase current transformer, controller (55) recognizes this state as the third state and when the phases (T)he said phase (S) is not clamped by the transformer zero phase current, the controller (55) recognizes such a state as the fourth condition. Here, the measuring instrument (1) can include the second switch is configured to indicate whether phase includes phase (S) which is clamped or not by zero phase current transformer. The user checks the condition clamping by the zero phase current transformer and turning on or turn off the second switch. The controller (55) determines that phases including the phase (S) clamped by the current transformer zero phase when the second switch is in ON state and determines that the phases include the phase (S) which is not clamped by zero phase current transformer when the second switch is in the on state DEAD. The direction of the leakage current is the angle at which the leakage current is expressed. with vectors. Here, in the case of single-phase AC, the phase component leakage current (Ioc) is caused by the capacitance of the ground and phase leakage current component (Ior) is caused by insulation resistance the ground is directly related to the insulation resistance that differ from each other by 90 degrees. The leakage current (Io) which detected by the zero phase current transformer is a combination Ioc and Ior, so that they appear at around 90 degrees. As will be explained later with reference to Figure 9, for example in the case of a star connection, if the Ior phase (U) is caused at 30 degrees position, Ior phase (V) is caused at the 150 degree position and the phase Ior (V) is caused by the position 150 degrees, the phase (W) is caused at the 270 degree position. Because Ioc phase (U) is generated at 120 degree position, Io phase (U) generated in the range of 30 degrees to 120 degrees. Thus Also, because the Ioc phase (V) is due to the 240 degree position, Io phase (U) is caused in the range of 150 degrees to 240 degrees and because the Ioc phase (W) is due to the position 360 (0) degrees, Io phase (U) is generated in the range 270 degrees to 360 (O) degrees. The controller (55) can recognize, from the direction of the leakage current Io which is detected by the zero phase current transformer, which is cable the channels are clamped together. The selection processor (51) may be configured to connecting only two line cables (e.g., line cables) (a) and cable lines (b)) of the cable lines that form the line the cable to be measured to the voltage detector (53). In case such configuration, the selection processor (51) does not includes the switch (52) and performs arithmetic operations by shifting the phase of the leakage current detected by zero phase current transformer that clamps the line cable other than of two connected line cables (for example, 120”) to recognize the states (first to fourth states) of load connection. For example, measuring instrument (1) includes the first voter who configured to select whether the resource side is on star connection or delta connection, second selector configured to select which two line (phase) wires are connected to the voltage detector (53) and the third selector configured to select which two phases are clamped by zero phase current transformer. The selection processor (51) recognizes load connection state based on the state selected by first voter, second voter and third voter and count lor. In particular, in cases where the first voter chooses star connection, the second selector chooses that the phase (R) and phase (T) is connected to the voltage detector (53) and the third selector select that the phase (R) and phase (T) are clamped by the transformer zero phase current, the load connection state is recognized as a state second and Ior are calculated based on the following equation: Ior —- Io x sin@ / cos60”. In the case where the first voter chooses a star connection, the second selector chooses that the phase (R) and phase (T) are connected to voltage detector (53) and the third selector selects the phase (S) and phase (T) is clamped by a zero phase current transformer, the state load connection is recognized as the second state. However, because the phase which is connected to the voltage detector (53) is different from the phase which is clamped by the zero phase current transformer, then the current phase leak detected by the zero phase current transformer is shifted of 120” and Ior is calculated according to the following equation: Ior —- Io x sin(@ - 120”) / cos60”. In the case where the first voter chooses a delta relationship, the second selector chooses that the phase (R) and phase (T) are connected to voltage detector (53) and the third selector selects that phase (S) and phase (T) is clamped by a zero phase current transformer, the condition load connection is recognized as the third state. However, because the phase connected to the voltage detector (53) is different from phase clamped by the zero phase current transformer, then the phase leakage current detected by the zero phase current transformer shifted by 120” and Ior is calculated according to the following equation: Ior —- Io x cos(@ - 120”). The first selector may then have a configuration to select whether the resource side is single phase or No. As described above, the selection processor (51) measures all voltages between phases and voltages between phases and ground, recognize the cable path of this voltage, automatically recognize the states (first to fourth states) of load connection of the phase voltage clamped by zero phase current transformer (ZCT) and selecting the measurement unit according to the recognition results. In this way, if the three-phase AC output from the power source The three-phase AC is converted to single-phase AC and the load is connected to the cable path that supplies single-phase AC, measuring instrument (1) can select the unit of measurement (first unit of measurement (11) up to the fourth unit of measurement (41) described above) which is appropriate for the circumstances (first to fourth circumstances which described above) from a three-phase AC power source and accurately calculate the electrical cable path related values (in particular, the leakage current component (Ior) caused by soil insulation resistance included in the leakage current) of cable lines. «Configuration and Operation of the first measuring unit (11)» Here, the specific configuration and operation of the unit The first measurement (11) will be explained. The first unit of measurement (11) operates in the case of the first state where the resource Three phase AC where the first phase, second phase, third phase and neutral line is connected in star to the line the cable to be measured and the load are connected to one of the phases first, second phase, or third phase and neutral line. Figure 5 is a block diagram illustrating configuration of the first measurement unit (11). In particular, Figure 5 is a block diagram that illustrates the unit configuration first measurement (11) and a diagram illustrating the state of the connection between the first measurement unit (11) and the line the cable to be measured in a state where the controller (55) recognizes the first state and the selection processor (51) selects first unit of measurement (11). first unit of measurement (11) includes leakage current detector (12), voltage detector (13), phase angle detector (14) and leakage current component counter ground insulation resistance (hereinafter referred to as the meter) leakage current component) (15). The leakage current detector (12) detects the leakage current flowing on the cable path to be measured to which the load is connected. The leakage current detector (12) detects the leakage current flowing in a single-phase circuit branching from a star connection (Y connection) first phase, second phase and third phase. Although the first, second and third phases will respectively be called as “phase (U)”, “phase (V)” and “phase (W)”, but the names is not limited to that alone. While the leakage current that measured with a leakage current detector (12) hereinafter referred to as as “Io”, her name is not limited to that. The zero phase current transformer (ZCT) (10) is connected to leakage current detector (12). Zero phase current transformer (10) configured to clamp the cable lines collectively. For example, a zero phase current transformer (10) can configured as a zero phase current transformer with a core separate practical type, which allows the operator to easily easy to place current transformers into cable lines on site. The leakage current detector (12) detects (calculates) the leakage current (Io) that flows on the cable path that will be measured from the signal that measured by the zero phase current transformer (10). The voltage detector (13) detects the applied voltage. between the neutral line and one of the first phase, second phase, or a third phase connected to the load. Figure 5 illustrates an example where the load is placed between phase (U) and neutral line (N). Voltage detector (13) detects the voltage applied between the phase (U) and the line neutral (N). The load can be placed between the phase (V) and neutral line (N) or between phase (W) and neutral line (N). In cases where the load is placed between the phase (V) and the line neutral (N), voltage detector (13) detects the voltage that given between the phase (V) and the neutral line (N). In the case of where the load is placed between the phase (W) and the neutral line (IN), voltage detector (13) detects the applied voltage between phase (W) and neutral line (N). The phase angle detector (14) calculates the phase angle based on leakage current detected by the leakage current detector (12) and voltage detected by the voltage detector (13). In particular, the phase angle detector (14) detects the phase angle (@) through arithmetic processing of the leakage current waveform (Io) detected by the leakage current detector (12) and the form voltage waveform (e.g., reference voltage V yv) which detected by the voltage detector (13). For example, the angle detector phase (14) detects the phase angle (8) between the reference voltages V nu Ian leakage current (Io) based on the zero voltage intersection point V us reference and zero leakage current (Io) intercept. Processing Arithmetic to calculate the phase angle can be done by synchronous detection or discrete Fourier transform (DFT). Configuration in terms of using synchronous detection will be explained Later. The leakage current component counter (15) calculates, according to equation (1) above, the leakage current component (Ior) caused by by the soil insulation resistance which is included in the leakage current from the leakage current (Io) detected by the leakage current detector (12) and the phase angle 8 is calculated by the phase angle detector (14). Next, the leakage current component caused by the resistance soil insulation can be referred to as “Ior.” Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. In this way, the measuring instrument (1) includes the unit of measurement. first (11) can accurately calculate the Ior caused by in a single phase circuit branching from the connection stars based on leakage current (Io) detected by the detector leakage current (12) and phase angle (phase difference) are calculated by phase angle detector (14). That is, the first measuring unit (11) is a unit of measurement used in cases where the load placed between the neutral (N) and phase (U) lines, between neutral line (N) and phase (V) or between neutral lines (N) and phase (W) in the star connection and operated as single phase circuit. D1 here, the potential difference between (FE) (earth) and the neutral line (N) (between phase (N) and earth) is essentially 0 IV) and a predetermined voltage (e.g., 100 IV)) is applied between (5) and phase (U), between phases (EK and V), or between phases (E and W) (between each phase and ground). The load is placed on between the neutral (N) and phase (U) lines, between the neutral lines (N) and phase (V), or between neutral line (N) and phase (W) connected to a single phase circuit. Units of measurement first (11) detects the voltage (V) between the phases where the load is placed, obtaining the phase difference (@) between the waveforms (sine wave) voltage (V) and input of the waveform leakage current (Io) of the zero phase current transformer (ZCT) 10 and calculate Ior by substituting the leakage current (Io) and the difference phase (98) into equation (1). Measuring instruments (1) can measure and calculate, as values- values ​​related to the electrical properties of cable lines, various numerical values ​​including leakage current (Io) and Ior are described above, such as current value, power value and time history as well time variation. Measuring instruments (1) can also check or monitor cable path to be measured using the related values electrical cable lines. The configuration of the first measurement unit (11) is one of examples and are not limited to the configurations described in above. As illustrated in Figure 6, the unit of measurement The first (11) may include the arithmetic unit (16) as replacement of phase angle detector (14) and current component counter leak (15). The arithmetic unit (16) calculates the leakage current component Ior(Io x cos@) caused by the resistance of the soil insulation through integration through synchronous detection based on (waveform) leakage current detected by the leakage current detector (12) and (waveform) voltage detected by a voltage detector (13). Integration with synchronous detection is to calculate Io x cos6 by integrating the waveform over a range has been defined as 0 to 180 degrees and one example The specifics will be explained below. Integration with detection synchronization is not limited to the following calculations. The arithmetic unit (16) performs the processing that has been determined by the voltage value (voltage waveform) that detected by the voltage detector (13) and leakage current (form current wave) detected by the current detector (12), extract parameter signals from logical signals, perform full wave operation of leakage current rectifier (waveform current) detected by the leakage current detector (12), performs quantized transformation of the rectifier current waveform full wave with continuous ADC and measuring parameters the logic signals of the sin and cos parts generated by quantized transformation and averaging of current waveforms obtained from a continuous Ar» ADC. In particular, the unit arithmetic (16) performs logical processing on voltage values (voltage waveform) detected by the detector voltage (13) to generate the first logical signal, performing logical processing on leakage current (current waveform) which detected by the leakage current detector (12) to produce second logical signal, performs arithmetic processing on the signal first logical and second logical signals and output signals positive / negative or Hi / Lo (first signal). In addition, the unit arithmetic (16) produces zero crossing points when the first logic signal changes, storing the time between points the resulting zero crossing point, inverting the logic signal first during a period where the time from the point of intersection the next zero is half the time of the stored time or less, performs phase conversion on the first logical signal, perform arithmetic processing on voltage waveforms phase conversion and second logical signal and output signal positive / negative or Hi / Lo (second signal). Arithmetic unit (16) can obtain the average type of desired current value by performing calculations through quantized transformations by the ADC As continuous based on the first signal and the signal Second. The desired current value type includes the measurement AC value and the input current I (AJ, active current Ir - Icos@) is obtained (AJ and reactive current IL - IC - Isin@ IAJ|. Here, “active current Ir —- Icos@” described above is the leakage current component Ior caused by soil insulation resistance. Based on this configuration, there are advantages that the leakage current component Ior is caused by resistance soil insulation can be calculated without calculating the phase difference vector. «Configuration and Operation of the Second Measurement Unit (21)» Next, the specific configuration and operation of the unit The second measurement (21) will be explained. The second measurement unit (21) operates in the case of the second state where the AC power source three phases, namely the first phase, the second phase and the third phase connected in a star connected to the cable path that will be measured and the load is connected to the first two phases, the second phase and third phase. Figure 1 is a block diagram illustrating second measurement unit configuration (21). In particular, Figure 1 is a block diagram that illustrates the unit configuration second measurement (21) and a diagram illustrating the situation connection between the second measuring unit (21) and the cable line will be measured in the state where the controller (55) recognizes the second state and the selection processor (51) selects the unit second measurement (21). The second measurement unit (21) includes leakage current detector (22), voltage detector (23), angle detector phase (24) and insulation resistance leakage current component counter ground (hereinafter referred to as the leakage current component counter) (25). The leakage current detector (22) detects the leakage current flowing on the cable path to be measured to which the load is connected. The leakage current detector (22) detects the leakage current flowing in a single-phase circuit branching from a star connection (Y connection) first phase, second phase and third phase. Although the first, second and third phases will respectively be called as “phase (U)”, “phase (V)” and “phase (W)”, but the names is not limited to that alone. While the leakage current that measured with a leakage current detector (22) hereinafter referred to as as “Io”, her name is not limited to that. The zero phase current transformer (ZCT) (10) is connected to leakage current detector (22). Zero phase current transformer (10) configured to clamp the cable lines collectively. For example, a zero phase current transformer (10) can configured as a zero phase current transformer with a core separate practical type, which allows the operator to easily easy to place current transformers into cable lines on site. The leakage current detector (22) detects (calculates) the Io flowing in the cable path that will be measured from the signal that measured with a zero phase current transformer (10). The voltage detector (23) detects the applied voltage. between two phases connected by a load. Figure 7 illustrates an example where the load is placed between phases (U) and phase (W). The voltage detector (23) detects the voltage that given between phase (U) and phase (W). Loads can be placed between phase (V) and phase (U) or between phase (V) and phase (W). In the case where the load is placed between phase (V) and phase (U), the voltage detector (23) detects the applied voltage. between phase (V) and phase (U). In cases where the load placed between phase (V) and phase (W), voltage detector (23) detects the voltage applied between phase (V) and phase (W). The phase angle detector (24) calculates the phase angle based on leakage current detected by the leakage current detector (22) and voltage detected by the voltage detector (23). In particular, the phase angle detector (24) detects the phase angle (@) through arithmetic processing of the leakage current waveform (Io) detected by the leakage current detector (22) and the form voltage waveform (e.g., reference voltage V vw) which detected by the voltage detector (23). For example, the angle detector phase (24) detects the phase angle (8) between the reference voltages V uw Ian leakage current (Io) based on the zero voltage intersection point reference V yw and zero cutoff point of leakage current (Io). Processing Arithmetic to calculate the phase angle can be done by synchronous detection or discrete Fourier transform (DFT). Configuration in terms of using synchronous detection will be explained Later. The leakage current component counter (25) calculates, according to equation (2) above, the leakage current component Ior caused by by the soil insulation resistance which is included in the leakage current from the leakage current (Io) detected by the leakage current detector (22) and the phase angle @ is calculated by the phase angle detector (24). Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. In this way, the measuring instrument (1) includes the unit of measurement. second (21) which can accurately calculate Ior which caused in a single phase circuit that branches from star connection based on the detected leakage current (Io) by the leakage current detector (22) and phase angle (phase difference) which is calculated by the phase angle detector (24). That is, the unit the second measurement (21) is the unit of measurement used in cases where the load is placed between phase (U) and phase (V), between phase (V) and phase (W) or between phase (U) and phase (W) on a star connection and operated as a circuit single phase. For example, if the load is connected as a single-phase circuit between phase (U) and phase (V), voltage between phases (E) (earth) and phase (U) as well as the voltage between phase (E) and phase (V) are equal to each other (e.g. 100 IV)) and the voltage between phase (U) and phase (V) are different (eg 200 IVJ). Burden placed between phase (U) and phase (V), between phase (V) and phase (W), or between phase (U) and phase (W). Units of measurement second (21) detects the voltage (V) between the phases where the load is placed, obtaining the phase difference (@) between the waveforms (sine wave) of voltage (V) and input waveform Input leakage current (Io) of zero phase current transformer (ZCT) 10 and calculate Ior by substituting the leakage current (Io) and the difference phase (98) into equation (2). Here, phase (U) and phase (V) have a potential difference of the same as the soil under normal conditions. In this case, although floating capacitance occurs in both phase (U) and phase (V), the same amount of floating capacitance occurs in both phase and floating capacitance are unbalanced. D1 here the reason why imbalance does not occur will be explained below. Leakage current (Io) includes the current components leak (hereinafter referred to as “Toc”) caused by grounding capacitance and leakage current components (hereinafter called “Ior”) which is caused by the resistance of the soil insulation which is directly related to an insulation resistance. The vector representation of Ioc and Ior will be explained with referring to Figure 9. Figure 9 is a diagram that The schematic depicts the vector representation of Ior and Ioc for each phase. With respect to the 0 degree reference voltage, in the case of leakage current of resistance components (hereinafter referred to as as “Iorlu)”) which flows in the (U) phase due to the 30 degree position in vector representation, component leakage current resistance (hereinafter referred to as “Ior(v)”) flowing in phase (V) is caused at 150 degrees position and leakage current resistance component (hereinafter referred to as “Ior (w)”) flows in phase (W) due to the 27 / 70 degree position. Hereinafter the vector Iorlu) is simply referred to as “Torlu)”, the vector Ior(v) is simply called “Iortv)” and The vector Ior(w) is simply referred to as “Ior(w).” In In this embodiment, the potential between phase (U) and phase (V) is considered as a reference voltage, which is set to 0 degrees. Capacitive component leakage current (hereinafter referred to as “Ioclu)”) which flows in phase (U) due to the 120 degree position which is advanced from Ior(u) by 90 degrees (1 / 2). Leakage current capacitive component (hereinafter referred to as “Ioc(v)”) that flows in phase (V) caused by the 240 degree position being advanced of Ior(v) by 90 degrees (1 / 2). Leakage current of the component capacitive (hereinafter referred to as “Ioc(s)”) that flows in phase (W) caused by the position 0 degrees (360 degrees) which is advanced from Ior(w) by 90 degrees (n / 2). Furthermore, the Ioclu vector) is simply referred to as “Toc lu)”, the vector Toc (vw) is simply referred to as “Ioc(v)” and the vector TIocl(s) are simply called as “Ioc(s)." A vector (Iocluvw)) obtained by combining Ioc(u) and Ioc(v) are caused at 180 degrees. This means, Ioc(u) caused in phase (U) and Ioc(v) caused by the unbalanced phase (V). In the case where Ioclu), Ioc(v) and TIoc(w) are balanced, Ioc(uv) and Ioc(w) are combined and cancel each other out and Ioc not the cause. Measuring instruments (1) can measure and calculate, as values- values ​​related to the electrical properties of a cable, various numerical values ​​including leakage current (Io) and Ior are described above, such as current value, power value and time history as well time variation. Measuring instruments (1) can also check or monitor cable path to be measured using the related values electrical cable lines. The configuration of the second measurement unit (21) is one examples and are not limited to the configurations described in above. As illustrated in Figure 8, the unit of measurement second (21) may include an arithmetic unit (26) instead of phase angle detector (24) and leakage current component counter (25). The arithmetic unit (26) calculates the leakage current component Ior (Io Xx Sin@ / cos6e0”) caused by the soil insulation resistance through integration through synchronous detection based on (form leakage current waveform detected by a leakage current detector (22) and (waveform of) the voltage detected by voltage detector (23). Integration with synchronous detection is calculate Io x sing by integrating the waveform within a predetermined range such as 90 to 270 degrees and divide Io x sing by cose60” and one example The specifics will be explained below. Integration with detection synchronization is not limited to the following calculations. The arithmetic unit (26) performs the processing that has been determined by the voltage value (voltage waveform) that detected by the voltage detector (23) and leakage current (form current wave) detected by the leakage current detector (22), extract parameter signals from logical signals, perform full wave operation of leakage current rectifier (waveform current) detected by the leakage current detector (22), performs quantized transformation of the rectifier current waveform full wave with continuous ADC and measuring parameters the logic signals of the sin and cos parts generated by quantized transformation and averaging of current waveforms obtained from a continuous Ar» ADC. In particular, the unit arithmetic (26) performs logical processing on voltage values (voltage waveform) detected by the detector voltage (23) to generate the first logical signal, performing logical processing on leakage current (current waveform) which detected by the leakage current detector (22) to produce second logical signal, performs arithmetic processing on the signal first logical and second logical signals and output signals positive / negative or Hi / Lo (first signal). In addition, the unit arithmetic (26) produces zero crossing points when the first logic signal changes, storing the time between points the resulting zero crossing point, inverting the logic signal first during a period where the time from the point of intersection the next zero is half the time of the stored time or less, performs phase conversion on the first logical signal, perform arithmetic processing on voltage waveforms phase conversion and second logical signal and output signal positive / negative or Hi / Lo (second signal). Arithmetic unit (26) can obtain the average type of desired current value by performing calculations through quantized transformations by the ADC As continuous based on the first signal and the signal Second. The desired current value type includes the measurement AC value and the input current I (AJ, active current Ir - Icos@) is obtained (IAI and reactive current IL - IC -—- Isin@ IJAJ. Arithmetic unit (26) divide “reactive current IL - IC - Isin@” by cos60” to calculate the leakage current component Ior caused by soil insulation resistance. Based on this configuration, there are advantages that the leakage current component Ior is caused by resistance ground insulation can be calculated without calculating the phase angle. «Configuration and Operation of the third measuring unit (31)» Next, the specific configuration and operation of the unit the third measurement (31) will be explained. The third unit of measurement (31) operates in the case of the third condition where the AC power source three phases: first phase, second phase and third phase connected in delta and one of these phases is grounded and connected to the cable strip to be measured and the load connected to a grounded phase and one of the phases is not grounded. Figure 10 is an illustrative block diagram configuration of the third measurement unit (31). In particular, Figure 10 is a block diagram illustrating the configuration of the unit the third measurement (31) and a diagram illustrating the situation connection between the third measuring unit (31) and the cable line which will be measured in the event that the controller (55) recognizes the third state and the selection processor (51) selects the unit third measurement (31). The third measurement unit (31) includes leakage current detector (32), voltage detector (33), angle detector phase (34) and insulation resistance leakage current component counter ground (hereinafter referred to as the leakage current component counter) (35). The leakage current detector (32) detects the leakage current flowing on the cable path to be measured to which the load is connected. The leakage current detector (32) detects the leakage current flowing in a single phase circuit that branches from the delta connection (A) first phase, second phase and third phase. First, second phase and the next three are each referred to as “Phase (R)”, “Phase (S)” and “Phase (T)””, but the names are not limited to this. only that. While the leakage current is measured with a detector leakage current (32) hereinafter referred to as “Io”, its name is not limited to that. In this embodiment, the phase (S) earthed, but phase (R) or phase (T) can be earthed. The zero phase current transformer (ZCT) (10) is connected to leakage current detector (32). Zero phase current transformer (10) configured to clamp the cable lines collectively. For example, a zero phase current transformer (10) can configured as a zero phase current transformer with a core separate practical type, which allows the operator to easily easy to place current transformers into cable lines on site. The leakage current detector (32) detects (calculates) the Io flowing in the cable path to be measured, from the signal that measured with a zero phase current transformer (10). The voltage detector (33) detects the applied voltage. between the phases connected to the load. Figure 10 illustrates an example where the load is placed between phases (R) and phase (S). The voltage detector (33) detects the voltage that given between phase (R) and phase (S). Loads can be placed between phase (T) and phase (S). In terms of where the load is placed between phase (T) and phase (S), voltage detector (33) detects the voltage applied between phase (T) and phase (S). The phase angle detector (34) calculates the phase angle based on leakage current detected by the leakage current detector (32) and voltage detected by the voltage detector (33). In particular, the phase angle detector (34) detects the phase angle (@) through arithmetic processing of the leakage current waveform (Io) detected by the leakage current detector (32) and the form voltage waveform (e.g., reference voltage V xs) is detected by the voltage detector (33). For example, the phase angle detector (34) detects the phase angle (8) between the reference voltage V kz-s and leakage current (Io) based on the zero intersection of the reference voltage V rs and leakage current cutoff point (Io). Arithmetic processing to calculate the phase angle can be done by detection synchronous or discrete Fourier transform (DFT). Configuration in terms of the use of synchronous detection will be explained later. The leakage current component counter (35) calculates, according to equation (3) above, the leakage current component Ior caused by by the soil insulation resistance which is included in the leakage current from the leakage current (Io) detected by the leakage current detector (32) and the phase angle @ is calculated by the phase angle detector (34). Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. In this way, the measuring instrument (1) includes the unit of measurement. third (31) can accurately calculate the Ior caused by in a single phase circuit branching from a delta connection based on the leakage current (Io) detected by the detector leakage current (32) and phase angle (phase difference) are calculated by phase angle detector (34). That is, the third measuring unit (31) is a unit of measurement used in cases where the load placed between phase (R) and phase (S) (ground phase) or between the phases (T) and phase (S) (earthed phase) on delta connection and operated as a single phase network. Here, the potential difference between phase (FE) (earth) and phase (S) (phase to earth) (between phase (S) and earth) basically is 0 (VI) and the specified voltage (for example, 200 IV1) is applied between phase (E) and R and between phase (E) and T (between each phase and ground). The load is placed between phase (S) and phase (R) or between phase (S) and phase (T) which connected to a single-phase network. The second measurement unit (21) detects the voltage (V) between the phases where the load placed, obtaining the phase difference (@) between the waveforms (sine wave) from the voltage (V) and input from the form leakage current wave (Io) from zero phase current transformer (ZCT) 10 and calculate Ior by substituting the leakage current (Io) and phase difference (@) into equation (3). Measuring instruments (1) can measure and calculate, as values- values ​​related to the electrical properties of cable lines, various numerical values ​​including leakage current (Io) and Ior are described above, such as current value, power value and time history as well time variation. Measuring instruments (1) can also check or monitor cable path to be measured using the related values electrical cable lines. The configuration of the third measurement unit (31) is one of examples and are not limited to the configurations described in above. As illustrated in Figure 11, the unit the third measurement (31) may include the arithmetic unit 36 ​​as replacement of phase angle detector (34) and current component counter leak (35). The arithmetic unit (36) calculates the leakage current component Ior(Io x cos@) caused by the resistance of the soil insulation through integration through synchronous detection based on (waveform) leakage current detected by the leakage current detector (32) and (waveform) voltage detected by voltage detector 33. Integration with synchronous detection is to calculate Io x cos8 by integrating the waveform over a range has been defined as 0 to 180 degrees and one example The specifics will be explained below. Integration with detection synchronization is not limited to the following calculations. The arithmetic unit (36) performs the processing that has been determined by the voltage value (voltage waveform) that detected by the voltage detector (33) and leakage current (form current wave) detected by the leakage current detector (32), extract parameter signals from logical signals, perform full wave operation of leakage current rectifier (waveform current) detected by the leakage current detector (32), performs quantized transformation of the rectifier current waveform full wave with continuous ADC and measuring parameters the logic signals of the sin and cos parts generated by quantized transformation and averaging of current waveforms obtained from a continuous Ar» ADC. In particular, the unit arithmetic (36) performs logical processing on voltage values (voltage waveform) detected by the detector voltage (33) to generate the first logical signal, performing logical processing on leakage current (current waveform) which detected by the leakage current detector (32) to produce second logical signal, performs arithmetic processing on the signal first logical and second logical signals and output signals positive / negative or Hi / Lo (first signal). In addition, the unit arithmetic (36) produces zero crossing points when the first logic signal changes, storing the time between points the resulting zero crossing point, inverting the logic signal first during a period where the time from the point of intersection the next zero is half the time of the stored time or less, performs phase conversion on the first logical signal, perform arithmetic processing on voltage waveforms phase conversion and second logical signal and output signal positive / negative or Hi / Lo (second signal). Arithmetic unit (36) can obtain the average type of desired current value by performing calculations through quantized transformations by the ADC As continuous based on the first signal and the signal Second. The desired current value type includes the measurement AC value and the input current I (AJ, active current Ir - Icos@) is obtained (AJ and reactive current IL - IC - Isin@ IAJ|. Here, “active current Ir —- Icos@” described above is the leakage current component Tor caused by soil insulation resistance. Based on this configuration, there are advantages that the leakage current component Ior is caused by resistance soil insulation can be calculated without calculating the phase angle. «Configuration and Operation of the fourth measuring unit (41)» Special configuration and operation of the fourth measuring unit (41) will be explained. The fourth measurement unit (41) is operational in the fourth state where the three-phase AC power source where The first phase, second phase and third phase are connected delta and one of these phases is grounded, connected to The cable strip to be measured and the load connected to the two phases not grounded. Figure 12 is an illustrative block diagram fourth measurement unit configuration (41). In particular, Figure 12 is a block diagram illustrating the configuration of the unit the fourth measurement (41) and the diagram that illustrates it connection condition between the fourth measurement unit (41) and the strip cable to be measured in a state where the controller (55) recognizes the fourth condition and the selection processor (51) selects the fourth unit of measurement (41). The fourth unit of measurement (41) includes leakage current detector (42), voltage detector (43), phase angle detector (44) and leakage current component counter ground insulation resistance (hereinafter referred to as the meter) leakage current component) (45). The leakage current detector (42) detects the leakage current flowing on the cable path to be measured to which the load is connected. The leakage current detector (42) detects the leakage current flowing in a single phase circuit that branches from the delta connection (A) first phase, second phase and third phase. Although the first phase, the second and third phases are then referred to as the “phases” respectively. (R)”, “phase (S)” and “phase (T)”, but the names are not limited in that case only. While the leakage current is measured with leakage current detector (42) hereinafter referred to as “Io”, the name is not limited to that. In this embodiment, phase (S) is earthed, but phase (R) or phase (T) can be earthed. The zero phase current transformer (ZCT) (10) is connected to leakage current detector (42). Zero phase current transformer (10) configured to clamp the cable lines collectively. For example, a zero phase current transformer (10) can configured as a zero phase current transformer with a core separate practical type, which allows the operator to easily easy to place current transformers into cable lines on site. The leakage current detector (42) detects (calculates) the Io flowing in the cable path to be measured, from the signal that measured with a zero phase current transformer (10). The voltage detector (43) detects the applied voltage. between the phases connected to the load. Figure 12 illustrates an example where the load is placed between phases (R) and phase (T). The voltage detector (43) detects the voltage that given between phase (R) and phase (T). The phase angle detector (44) calculates the phase angle based on leakage current detected by the leakage current detector (42) and voltage detected by the voltage detector (43). In particular, the phase angle detector (44) detects the phase angle (@) through arithmetic processing of the leakage current waveform (Io) detected by the leakage current detector (42) and the form voltage waveform (e.g. reference voltage V kr») is detected by the voltage detector (43). For example, the phase angle detector (44) detects the phase angle (8) between the reference voltage V kr and leakage current (Io) based on the zero intersection of the reference voltage V rs and zero intercept of leakage current (Io). Arithmetic processing to calculate the phase angle can be done by detection synchronous or discrete Fourier transform (DFT). Configuration in terms of the use of synchronous detection will be explained later. The leakage current component counter (45) calculates, according to equation (4) above, the leakage current component Ior caused by by the soil insulation resistance which is included in the leakage current from the leakage current (Io) detected by the leakage current detector (42) and the phase angle @ is calculated by the phase angle detector (44). Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. In this way, the measuring instrument (1) includes the unit of measurement. fourth (41) can accurately calculate the Ior caused by in a single phase circuit branching from a delta connection based on the leakage current (Io) detected by the current detector leak (42) and the phase angle (phase difference) is calculated by phase angle detector (44). That is, the fourth measuring unit (41) is a unit of measurement used in cases where the load placed between phases that are not grounded (between phases (R) and phase (T)) in delta connection and operated as single phase circuit. For example, in the case where the load is connected as single phase circuit between phase (R) and phase (T), voltage between phase (E) (earth) and phase (R) as well as the voltage between phase (BE) and phase (T) are equal to each other (for example, 200 IV)). The load is placed between phase (R) and phase (T). Units of measurement fourth (41) detects the voltage (V) between the phases where load is placed, obtaining the phase difference (@) between the forms wave (sine wave) voltage (V) and input of the form leakage current waveform (Io) of zero phase current transformer (ZCT) 10 and calculate Ior by substituting the leakage current (Io) and phase difference (8) into equation (4). Here, phase (R) and phase (T) have a potential difference the same to the ground. In this case, although the capacitance floating occurs in the (R) phase and the (T) phase, the amount the same floating capacitance occurs in both phases and unbalanced floating capacitance. D1 here the reason why imbalance does not occur will be explained below. When the voltage between phase (R) and phase (T) is detected by the voltage detector (43) and the reference point obtained from the detected voltage, the phase axis (R) is located at a position of 60 degrees from the reference point and phase axis (T) is at a position of 120 degrees from the reference point, such as illustrated in Figure 14. Furthermore, due to the differences the phase between Ior (hereinafter referred to as Iorl(r)) of the phase (R) and the reference point is 60 degrees, then Iorl(r) is due to the axis phase (R). Due to the phase difference between Ior (hereinafter referred to as Ior(t)) phase (T) and the reference point is 120 degrees, then Iorlt) caused by the phase axis (T). Ioc (hereinafter referred to as Iocl(r)) phase (R) is caused by position 90 degrees from the phase axis (R), therefore caused at a position of 150 degrees. Ioc (hereinafter referred to as Ioc(t)) phase (T) is caused at a position of 90 degrees from the axis phase (T), therefore caused at the 210 degree position. In the case where Iocl(r) and Ioc(t) are balanced, Ioc(rt) is obtained by combining Iocl(r) and Ioclt) (combination vector) is generated in a direction 180 degrees from the reference axis ( by phase (R) and Ioc(t) caused by phase (T) is not (19 —X" direction in Figure 14). That is, Ioc(r) is caused balanced. Measuring instruments (1) can measure and calculate, as values- values ​​related to the electrical properties of cable lines, various numerical values ​​including leakage current (Io) and Ior are described above, such as current value, power value and time history as well time variation. Measuring instruments (1) can also check or monitor cable path to be measured using the related values electrical cable lines. The configuration of the fourth measurement unit (41) is one of examples and are not limited to the configurations described in above. As illustrated in Figure 13, the unit the fourth measurement (41) may include arithmetic units 46 as a replacement for the 44 phase angle detector and component counter leakage current (45). The arithmetic unit (46) calculates the leakage current component Ior (Io x Sin@ / cos30”) caused by the soil insulation resistance through integration through synchronous detection based on (form leakage current waveform detected by a leakage current detector (42) and (waveform of) the voltage detected by voltage detector (43). Integration with synchronous detection is calculate Io x sing by integrating the waveform within a predetermined range such as 90 to 270 degrees and divide Io x sing by cos30” and one example The specifics will be explained below. Integration with detection synchronization is not limited to the following calculations. The arithmetic unit (46) performs the processing that has been determined by the voltage value (voltage waveform) that detected by the voltage detector (43) and leakage current (form current wave) detected by the leakage current detector (42), extract parameter signals from logical signals, perform full wave operation of leakage current rectifier (waveform current) detected by the leakage current detector (42), performs quantized transformation of the rectifier current waveform full wave with continuous ADC and measuring parameters the logic signals of the sin and cos parts generated by quantized transformation and averaging of current waveforms obtained from a continuous Ar» ADC. In particular, the unit arithmetic (46) performs logical processing on voltage values (voltage waveform) detected by the detector voltage (43) to generate the first logical signal, performing logical processing on leakage current (current waveform) which detected by the leakage current detector (42) to produce second logical signal, performs arithmetic processing on the signal first logical and second logical signals and output signals positive / negative or Hi / Lo (first signal). In addition, the unit arithmetic (46) produces zero crossing points when the first logic signal changes, storing the time between points the resulting zero crossing point, inverting the logic signal first during a period where the time from the point of intersection the next zero is half the time of the stored time or less, performs phase conversion on the first logical signal, perform arithmetic processing on voltage waveforms phase conversion and second logical signal and output signal positive / negative or Hi / Lo (second signal). Arithmetic unit (46) can obtain the average type of desired current value by performing calculations through quantized transformations by the ADC As continuous based on the first signal and the signal Second. The desired current value type includes the measurement AC value and the input current I (AJ, active current Ir - Icos@) is obtained (AJ and reactive current IL - IC -— Isin@ (Al. Arithmetic unit (46) divide “reactive current IL - IC - Isin@” by cos30” to calculate the leakage current component Ior caused by soil insulation resistance. Based on this configuration, there are advantages that the leakage current component Ior is caused by resistance soil insulation can be calculated without calculating the phase angle. In this embodiment, the first measuring unit (11), the unit second measurement (21), third measurement unit (31) and third unit the fourth measurement (41) is configured independently, but this disclosure is not limited to that. For example, the leakage current detector (12, 22, 32, 242) can configured as a single unit, voltage detectors (13, 23, 33, 43) can be configured as a single unit, phase angle detector (14, 24, 34, 44) can be configured as one unit. configured as a single unit and current component counter leak (15, 25, 35, 45) can be configured as one unit. Figure 15 is a diagram showing another configuration. from measuring instrument (1c). Measuring instrument (1)c includes the measurement unit (101) and selection processing (102). The measuring unit (101) measures electrically related values. The cable path is a value related to electrical cable lines that branch off from the existing cable lines will be measured to which three-phase AC power source is connected in star or delta connected connected and branched from three AC phase into single-phase AC and distributed. The selection processor (102) selects one state from two or more first condition where the three phase AC power source where first phase, second phase, third phase and neutral line connected in a star connected to a cable line to be measured and the load connected to one of the phases first, second phase, or third phase and neutral line, the second situation is where the three-phase AC power source is where the phase first, the second phase and the third phase are connected together star, connected to the cable path to be measured and the load connected to the first two phases, the second phase and the third phase, the third situation where the three-phase AC (S) source of electricity where the phase first, second and third phases are connected in delta and one of the phases is grounded, connected to the cable strip that will measured and the load is connected to the grounded and faulty phase one of the phases is not grounded and the fourth condition where three-phase AC power source where the first phase, second phase and The third phase is connected in delta and one of the phases grounded connected to the cable strip to be measured and the load connected to two ungrounded phases. In the case where selection processing (102) selects first state or third state, unit of measurement (101) calculate, based on the following equation, the leakage current component Ior caused by the included ground insulation resistance in leakage current Io, which is one of the electrical related values Cable lines, which flow in the cable lines to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between one of the first phases, phase second, or third phase where the load is connected and the line neutral: Tor - Io x cos@. In the case where the selection processing (102) selects second state, the measurement unit (101) calculates, based on the following equation, the leakage current component Ior caused by soil insulation resistance included in the leakage current Io, which is one of the electrical currents in the cable lines from related values, which flow in the cable path that will be measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between the two connected phases with load: Ior —- Io x sin@ / cos60”. In the case where the selection processing (102) selects fourth state, the measurement unit (101) calculates, based on the following equation, the leakage current component Ior caused by soil insulation resistance included in the leakage current Io, which is one of the electrical currents in the cable lines from related values, which flow in the cable path that will be measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between the connected phases with load: Ior —- Io x sing / cos30”. «Measurement Method» Here, the measurement method with measuring instrument (1) will be explained. Figure 16 is a flowchart to explain measurement method procedures. In step ST1, the selection processor (51) selects one of the one of a number of units of measurement configured to measure, with different configurations, the related values electrical cable lines which are the related values with electricity from the cable lines that branch off from the cable lines which will be measured to where the three-phase AC power source (T) is connected star or delta connected and branched from three AC phase to single phase AC and distributed (processing steps selection). In step ST2, the measuring unit (2) performs a measurement. with one of the first units of measurement (11) to the unit fourth measurement (41), which was selected in step selection processing (measurement step). D1 here, the first unit of measurement (11) measures, with first configuration, the electrical values ​​related to the cable path is a value related to the electrical properties of the cable line branching from the cable path to be measured to where the power source is Star connected three phase AC is connected and branched from Three-phase AC to single-phase AC and distributed. The second measuring unit (21) measures, with the configuration second, a value related to the electrical cable line which is a value related to the electricity of a Cable lines that branch off from a future cable line measured where the three-phase AC power source is star-connected connected and branched from three-phase AC to single-phase AC and distributed. The third measuring unit (31) measures, with the configuration third, the value related to the cable line electricity which is the value related to electricity from cable lines that branch from The cable path to be measured is where the three-phase AC power source is located. delta connected is connected and branched from three phase AC to single phase AC and distributed. The fourth measuring unit (41) measures, with the configuration fourth, the value related to the cable line electricity which is the value related to electricity from branched cable lines from the cable path to be measured where the AC power source is three delta connected phase is connected and branched from AC three phase to single phase AC and distributed. Unit of measurement (2) includes two or more units of measurement first (11) to the fourth unit of measurement (41). In the method measurement, in cases where the three-phase AC output from the source three phase AC power is converted into single phase AC and load connected to the cable line where single phase AC flows, the unit measurements can be transferred to units of measurement (units of measurement first (11) to fourth (41) units of measurement described above) is appropriate for the circumstances (first to fourth circumstances as described above) from a three-phase AC power source and Ior from the cable route can be calculated accurately. In the selection processing step, the first unit of measurement (11) is selected in the case of the first situation where the AC power source three phases where the first phase, second phase, third phase and neutral line is connected in a star to the cable line will be measured and the load is connected to one of the first phases, second phase, or third phase and neutral line. In the selection processing step, the second unit of measurement (21) is selected in the case of the second situation where the AC power source three phases, namely the first phase, the second phase and the third phase connected in a star connected to the cable strip that will measured and the load is connected to the first two phases, the second phase and third phase. At the selection processing step, the third unit of measurement (31) is chosen in the case of the third condition where the AC power source three phases: first phase, second phase and third phase connected in delta and one of these 5 phases grounded and connected to the cable strip to be measured and the load is connected to the grounded phase and one of the phases which is not grounded. At the selection processing step, the fourth unit of measurement (41) is chosen in the case of the fourth condition where the AC power source three phases: first phase, second phase and third phase connected in delta and one of these phases grounded and connected to the cable strip to be measured and The load is connected to two ungrounded phases. As a first configuration, the first measurement unit (11) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between one of the first phases, phase second, or third phase where the load is connected and the line neutral: Tor - Io x cos@. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As a second configuration, the second measurement unit (21) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle 6 calculated from the leakage current Io and voltage applied between two phases connected by burden: Ior —- Io x sin@ / cos60”. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As a third configuration, the third unit of measurement (31) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between the phases connected by burden: Tor - Io x cos@. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As the fourth configuration, the fourth measurement unit (41) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between the phases connected by burden: Ior —- Io x sin@ / cos30”. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. Next, another measurement method with measuring instruments (1) will be explained. Figure 17 is a flowchart to explain other measurement method procedures. In step ST1O1l, the measuring unit (101) measures a electrical values ​​related to cable lines which are values ​​that related to the electrical wiring that branches from The cable path to be measured is where the three-phase AC power source is located. star connected or delta connected and branching from three-phase AC to single-phase AC and distributed (measurement steps). In step ST102, the selection processor (102) selects one the state of the first two or more states where the resource Three phase AC where the first phase, second phase, third phase and neutral line is given a star connection connected to the cable line which will be measured and the load is connected to one of the phases first, second phase, or third phase and neutral channel, the second condition where the three-phase AC power source where the phases first, second and third phases are connected in a star pattern, connected to the cable strip to be measured and the load connected to the first two phases, the second phase and the third phase, the third condition where the three-phase AC power source where the phase first, second and third phases are connected in delta and one of its phases is grounded and connected to a cable strip that will be measured and the load is connected to the grounded phase and one of the phases is not grounded and the fourth condition where three-phase AC power source where the first phase, second phase and the third phase is connected in delta and one of the phases is grounded connected to the cable line to be measured and the load is connected to the two ungrounded phases (selection processing step). In cases where the first or third condition is present selected in the selection processing step, the unit of measurement (101) calculates, based on the following equation, the current components Ior leakage caused by soil insulation resistance included in the leakage current Io, which is one of the values related to electrical cable lines, which flow in cable lines that measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between one of the first phases, second phase, or third phase where the load is connected and the line neutral: Tor - Io x cos@. In the case where the second state is selected in step selection processing, measurement unit (101) counts, based on the following equation, the leakage current component TIor is caused by the resistance of the soil insulation which is included in leakage current Io, which is one of the related values cable line electricity, which flows in the cable line is measured based on the phase angle @ calculated from the leakage current Io and voltage applied between two phases connected by burden: Ior — Io x sing / cos60”. In the case where the fourth state is selected in step selection processing, measurement unit (101) counts, based on the following equation, the leakage current component TIor is caused by the resistance of the soil insulation which is included in leakage current Io, which is one of the values related to electrical cable lines, which flow in cable lines measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between the connected phases with load: Ior —- Io x sin@ / cos30”. (Measurement Program) Measurement program to switch measurement units to units measurements that correspond to the state of a three-phase AC power source and accurately calculate the Ior of the cable path in cases where three-phase AC output from a three-phase AC power source is converted to single phase AC and the load is connected to the cable line where single-phase AC flow mainly includes the following steps and implemented by computer (500) (hardware). Step 1: choose one of a number of units of measurement configured to measure, with different configurations, electrical values ​​related to cable lines which are values ​​that related to the electrical cable lines that branch off from the lines the cable to be measured is connected to a star or connected to a wire three-phase AC power supply delta connected and branched from Three-phase AC to single-phase AC and distributed (step selection processing). Step 2: take a measurement with one of the units first measurement (11) to the fourth measurement unit (41), which was selected in the selection processing step (calculation steps). D1 here, the first unit of measurement (11) measures, with first configuration, the electrical values ​​related to the cable path is a value related to the electrical properties of the cable line branching from the cable path to be measured to where the power source is Three-phase star-connected AC is connected and branched from the AC three phase to single phase AC and distributed (step first measurement). The second measuring unit (21) measures, with the configuration second, the value related to the electrical power of the cable line which is values ​​related to the electrical properties of the cable lines branching from the cable path to be measured to where the power source is Star connected three phase AC is connected and branched from Three-phase AC to single-phase AC and distributed (step second measurement). The third measuring unit (31) measures, with the configuration third, the value related to the cable line electricity which is the value related to electricity from the cable lines that branch off from The cable path to be measured is where the three-phase AC power source is located. delta connected connected and branched from three-phase AC to Single phase and distributed AC (third measurement step). The fourth measuring unit (41) measures, with the configuration Fourth, the value related to the electrical power of the cable line which is values ​​related to the electrical properties of branching cable lines from the cable path to be measured to where the three AC power sources are delta connected phases are connected and branched from three AC phase to single phase AC and distributed (measurement steps fourth). Unit of measurement (2) includes two or more units of measurement first (11) to fourth (41) measurement units. Here, the configuration and operation of the computer (500) will be explained with reference to Figure 18. As illustrated in Figure 18, the computer (500) is configured by connecting a processor (501), a memory (502), a storage (503), an I / F input / output (504) and an I / F communication (505) on a bus A. Components They work together to fulfill their functions and / or methods described in this disclosure. For example, a screen to display various types of information, touch panels operated by users and other devices connected to the I / F input / output (504). The touch panel is placed on the front surface of the screen. This configuration allows 148 intuitive user operation via touch or operation of other appropriate icons on the screen with the finger. The touch panel does not have to be placed on the front surface of the screen. As a replacement or addition to the touch panel, keyboard or pointing device, such as a mouse, can connected to the I / F input / output (504). The speaker is configured to output sound to the outside or the microphone is configured to receive external sound can be connected to the input / output I / F (504). The screen is a liquid crystal display, the screen organic electroluminescence (EL), or other suitable display which displays various types of information controlled by processor (501). Memory (502) consists of random access memory (RAM). RAM consists of volatile or non-volatile memory. Storage (503) consists of read-only memory (ROM). ROM consists of non-volatile and configurable memory as, for example, hardware (HDD) or state devices hard drive (SSD). Storage (503) stores various types of programs, such as the measurement program executed in Steps 1 through 2 described above. For example, the processor (501) controls the entire computer operation (500). The processor (501) is a device arithmetic that contains the operating system and various programs that performs various functions, from storage (503) to memory (502) and execute the commands included in the loaded program. In particular, on input of operations by the user, processing (501) read a program (e.g., a measurement program) of the present embodiment) stored in storage (503), spread the read program in memory (502) and execute the program. The processor (501) executes the program measurement to implement the function of the measurement unit first (11), leakage current detector (12, 22, 32, 42), detector voltage (13, 23, 33, 43), phase angle detector (14, 24, 34, 44), soil insulation resistance leakage current component counter (leakage current component counter) (15, 25, 35, 45), unit second measurement (21), third measurement unit (31), unit fourth measurement (41) and selection processor (51). D1 here, the processor configuration (501) will be explained. The processor (501), for example, is a central processing unit (CPU), microprocessing unit (MPU), graphics processing unit (GPU), various other arithmetic devices, or a combination of both. To fulfill the functions and / or methods described in this disclosure, some or all of the processor functions (501), memory (502), storage (503) and components others can be configured by a processing circuit (601) which is dedicated to hardware, as shown in Figure 19. The processing circuit (601), for example, Single circuit, composite circuit, programmable processor, processor parallel programmable, application-specific integrated circuits (ASICs), field-programmable gate array (FPGA), or combination series. Although the processor (501) is depicted as a single component, the configuration is not limited to that. Processor (501) can be a group of physically separate processors. In the current specification, a program or set of commands included in the program is / have been described executed by the processor (501). Programs or commands can be run by a single processor (501) or can be distributed to a number of processors to be executed. The program or commands included in the program, which are executed by processor (501), can be executed by any number of virtual processors. I / F Communications (505) complies with established communication protocols. determined and establish wired or wireless communication with external devices. In the case of three-phase AC output from a three-phase AC power source the phase is converted to single phase AC and the load is connected to the line cable that supplies single phase AC, by running a program computer measurement (500), steps (measurement steps the first to the fourth measurement steps described in above) that is appropriate for the circumstances (first to fourth circumstances described above) from a three-phase AC power source can is selected and the Ior of such a cable path can be calculated accurately. In the selection processing step, the first unit of measurement (11) is selected in the case of the first situation where the AC power source three phases where the first phase, second phase, third phase and star-connected neutral lines are connected to the cable lines to be measured and the load connected to one of the phases first, second phase, or third phase and neutral line. In the selection processing step, the second unit of measurement (21) is selected in the case of the second situation where the AC power source three phases, namely the first phase, the second phase and the third phase connected in a star connected to the cable path that will be measured and the load is connected to the first two phases, the second phase and third phase. In the selection processing step, the third unit of measurement (31) is selected in the case of the third condition where the AC power source three phases, namely the first phase, the second phase and the third phase connected in delta and one of these 5 phases grounded and connected to the cable line to be measured and the load is connected to the grounded phase and one of the phases which is not grounded. At the selection processing step, the fourth unit of measurement (41) is chosen in the case of the fourth condition where the AC power source three phases: first phase, second phase and third phase connected in delta and one of these phases (T). grounded and connected to the cable strip to be measured and The load is connected to two ungrounded phases. As a first configuration, the first measurement unit (11) calculate, according to the following equation, the leakage current component Ior which is caused by the included ground insulation resistance in the leakage current Io flowing on the cable strip to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between one of the first phases, the second phase second, or third phase where the load is connected and the line neutral: Tor - Io x cos@. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As a second configuration, the second measurement unit (21) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between two phases connected by burden: Ior —- Io x sin@ / cos60”. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As a third configuration, the third unit of measurement (31) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between the phases connected by burden: Tor - Io x cos@. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. As the fourth configuration, the fourth measurement unit (41) calculate, according to the following equation, the leakage current component Ior caused by the resistance of the soil insulation which includes in the leakage current Io flowing in the cable path to be measured based on the phase angle @ calculated from the leakage current Io and voltage applied between the phases connected by burden: Ior —- Io x sing / cos30”. Leakage current, voltage, phase angle and leakage current components described above which is caused by insulation resistance land is included in the value related to the cable line electricity. The measurement program is not limited to one thing. described above and may primarily include steps following and executed by the computer (500) (hardware). Step 101: measuring the electrical values ​​of the cable line which is a value related to the electrical properties of the cable line which branches from the cable line to be measured where the source is three-phase AC power connected in star or delta connected and branched from three-phase AC to single-phase AC phase and distributed (measurement steps). Step 102: select one state from two or more The first situation is where the AC power source is three phase where the phase first, second phase, third phase and neutral line are connected star-connected to the cable line to be measured and A load is connected to one of the first phase, the second phase, or third phase and neutral channel, the second state where the source three-phase AC power where the first phase, second phase and second phase the third is connected in a star and connected to the cable line to be measured and the load is connected to the first two phases, phase second and third phase, the third state where the AC power source is three phase where the first phase, second phase and third phase are connected in delta and one of the phases is grounded, connected to the line the cable to be measured and the load connected to the phase grounded and one of the phases is not grounded and the fourth condition where the three-phase AC power source where the phase first, second and third phases are connected in delta and one of the phases is grounded, connected to the cable strip that will connected is measured and the load connected to two phases is not grounded (selection processing step). In the case where the first condition or the third condition selected in the selection processing step, unit of measurement (101) calculates, based on the following equation, the current component leaking Ior caused by the ground insulation resistance which included in the leakage current Io, where is one of the values related to cable line electricity, which flows in the cable line measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between one of the first phases, second phase, or third phase where the load is connected and the line neutral: Tor - Io x cos@. In the case where the second state is selected in step selection processing, measurement unit (101) counts, based on the following equation, the leakage current component TIor is caused by the resistance of the soil insulation which is included in leakage current Io, which is one of the related values cable line electricity, which flows in the cable line is measured based on the phase angle @ calculated from the leakage current Io and voltage applied between two phases connected by burden: Ior —- Io x sin@ / cos60”. In the case where the fourth state is selected in step selection processing, measurement unit (101) counts, based on the following equation, the leakage current component TIor is caused by the resistance of the soil insulation which is included in leakage current Io, which is one of the values related to electrical cable lines, which flow in cable lines measured based on the phase angle 8 calculated from the leakage current Io and the voltage applied between the connected phases with load: Ior —- Io x sing / cos30”. REFERENCE CHARACTER DESCRIPTION 1 Measuring Tool 2 Units of measurement 10 Zero Phase Current Transformers (ZCT) The First 11 Units of Measurement 12, 22, 32, 42 Leakage Current Detector 13, 23, 33, 43 Voltage Detector 14, 24, 34, 44 Phase angle detector 15, 25, 35, 45 Resistance Leakage Current Component Counter Ground Insulation (Leakage Current Component Calculator) 16, 26, 36, 46 Arithmetic units 21 Second unit of measurement 31 Third Unit of Measurement 41 Fourth Unit of Measurement 51 Election Processor

Claims

Measuring instruments consisting of: A unit of measurement that includes two or more the first unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the first leakage current detector detect leakage current flowing in the cable path will be measured in relation to the load and shape voltage wave detected by a voltage detector the first to detect the voltage applied between two phase connected to the load in a cable path which branches from a cable line to be measured to where a star is connected to a three-phase AC power source connected or the cable path to be measured connected to a three-phase circuit consisting of star-connected three-phase AC power source and branching from three-phase AC to single-phase AC and distributed, the second measurement unit is configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the second leakage current detector detect leakage current flowing in the cable path will be measured in relation to the load and shape voltage wave detected by a voltage detector the second one detects the voltage applied between the two phase connected to the load in a cable path which branches from the cable line to be measured to where star-connected three-phase AC power source is connected or the cable path to be measured that is connected to the circuit three phase consisting of a three phase AC power source star connected and branched from three-phase AC to AC single phase and distributed, the third unit of measurement is configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the third leakage current detector detect leakage current flowing in the phase circuit single branching from delta connection and form voltage wave detected by a voltage detector the third one detects the voltage applied between the phases phase connected to the load in the cable path branching from the cable line to be measured which is connected with a three-phase AC power source connected to delta or cable path to be measured that is connected with a three-phase circuit consisting of an AC power source three phases connected in delta and branched from Three-phase AC to single-phase AC and distributed, and fourth unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the fourth leakage current detector detect leakage current flowing in the cable path that will be measured in relation to the load and waveform the voltage detected by the fourth voltage detector detects the voltage applied between the phases connected to the load on the cable path that branches from The cable path to be measured is connected to the source delta-connected three-phase AC power or cable lines will be measured which is connected to a three-phase circuit which consists of a delta-connected three-phase AC power source and branching from three-phase AC to single-phase AC and distributed: and selection processor configured to select one of the units of measurement in the unit of measurement. The measuring apparatus of claim 1, wherein the first measurement unit calculates the leakage current component caused by the resistance of the soil insulation by integration with synchronous detection based on shape leakage current wave detected by the leakage current detector first and the voltage waveform detected by first voltage detector, the second measurement unit calculates the leakage current component caused by the resistance of the soil insulation by integration with synchronous detection based on shape leakage current wave detected by the current detector second leak and detected voltage waveform by the second voltage detector, the third measurement unit calculates the leakage current component caused by the resistance of the soil insulation by integration with synchronous detection based on shape waveform of leakage current detected by a current detector third leak and detected voltage waveform by the third voltage detector, and the fourth measurement unit calculates the leakage current component caused by the resistance of the soil insulation by integration with synchronous detection based on shape leakage current waves flowing in the cable path to measured based on the leakage current detected by the detector fourth leakage current and voltage waveform detected by the fourth voltage detector. Measuring instruments consisting of: a unit of measurement configured to measure leakage current component caused by insulation resistance ground based on the detected leakage current waveform by the first leakage current detector that detects leakage current that flows in the cable path to be measured connected to the load and the voltage waveform that detected by the first voltage detector which detects the voltage applied between two connected phases with loads on the cable lines branching off from the cable lines to be measured which is connected to a three-phase AC power source star-connected or delta-connected phases or lines the cable to be measured is connected to the circuit three phase consisting of a three phase AC power source star connected or delta connected and branched from AC three-phase to single-phase AC and distributed, and selection processor configured to select one state of the first two or more states where three-phase AC power source where the first phase, second phase, the third phase and neutral line are connected in star connected to the cable line to be measured and the load connected to one or two of the first phase, second phase, or third phase and neutral channel, the second state where three phase AC power source where the first phase, second phase and the third phase is connected in star, connected to the line the cable to be measured and the load is connected to two or three of the first phase, second phase and third phase, state thirdly where the three-phase AC power source is where the first phase, The second and third phases are connected in delta and one of its phases is grounded, connected to the cable strip which will be measured and the load is connected to the phase grounded and one or two ungrounded phases and the fourth condition where the three-phase AC power source where The first phase, the second phase and the third phase are connected delta and one of the grounded phases is connected to the cable line to be measured and the load connected to two or three phases which is not grounded and counting measurement units, in the case where the selection processor chooses first state or third state, leakage current component which is caused by the included ground insulation resistance in the leakage current that flows in the cable strip that will measured based on the leakage current waveform and shape voltage wave applied between one of the phases first, second phase, or connected third phase with load and neutral line, in cases where the selection processor chooses the second situation, the leakage current component caused by soil insulation resistance is included in the leakage current flowing in the cable path to be measured based on the shape leakage current waveform and voltage waveform applied between two phases connected to the load and in cases where the selection processor chooses the fourth state, the leakage current component caused by soil insulation resistance is included in the leakage current flowing in the cable path to be measured based on the shape leakage current waveform and voltage waveform applied between the phases connected to the load. Measurement methods consisting of: select, in the selection processing step, one of the of a number of arithmetic units configured to calculating with different configurations, leakage current components caused by the ground insulation resistance of the line cables that branch from the cable line to be measured to where is the three-phase AC power source connected in a star? or connected with delta connected or cable line to be measured is connected to a three-phase circuit consisting of a three-phase AC power source connected with a star or connected with a delta and branched from three-phase AC to single-phase AC and distributed, and to carry out, in a measurement step, a measurement by the unit of measurement that has been selected in the step selection processing and a number of units of measurement includes two or more the first unit of measurement configured to calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the first leakage current detector el which detects leakage current flowing in the cable path to be measured which is connected to the load and shape voltage wave detected by a voltage detector the first to detect the voltage applied between two phase connected to the load in the cable path branching from the cable line to be measured which is connected with a three-phase AC power source connected to star or cable path to be measured that is connected with a three-phase circuit consisting of an AC power source three phases connected by a star and branched from Three-phase AC to single-phase AC and distributed, second unit of measurement configured for calculate the leakage current component caused by by the ground insulation resistance based on the waveform leakage current detected by the second leakage current detector which detects leakage current flowing in the cable path to be measured which is connected to the load and shape voltage wave detected by a voltage detector the second one detects the voltage applied between the two phase connected to the load in the cable path branching from the cable line to be measured which is connected with a three-phase AC power source connected to star or cable path to be measured that is connected with a three-phase circuit consisting of an AC power source three phases connected by a star and branched from Three-phase AC to single-phase AC and distributed, the third unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the third configuration, the current detector leak related to the electrical value of the cable line which is the value related to detecting leakage current flowing in a circuit single phase branching from delta connection and form voltage wave detected by a voltage detector the third one detects the voltage applied between the phases where the load is connected in a branching cable path from the cable path to be measured which is connected to delta or line connected three-phase AC power source the cable to be measured is connected to a three-wire circuit phase consisting of a three-phase AC power source delta connected and branched from three-phase AC to Single phase and distributed AC, the fourth unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the fourth leakage current detector detect leakage current flowing in the cable path will be measured, which is connected to the load, and the form voltage wave detected by a voltage detector the fourth one that detects the voltage applied between the phases phase connected to the load in the cable path branching from the cable line to be measured, which connected to a three-phase AC power source that is connected with the delta, or cable path to be measured, which connected to a three-phase circuit consisting of three-phase AC power source connected in delta, which branching from three-phase AC to single-phase AC and distributed. A measurement program that causes the computer to operate select, in the selection processing step, one of the of a number of arithmetic units configured to calculate, with different configurations, the current components leaks caused by the resistance of the ground insulation from cable lines that branch off from the cable line to be measured which is connected to a three-phase AC power source star connected or delta connected or cable lines that will be measured which is connected to a three-phase circuit consists of a three-phase AC power source connected in star or delta connected and branched from three-phase AC to AC single phase and distributed, and perform, in a measurement step, a measurement by the unit of measurement that has been selected in the processing step election, and a number of units of measurement includes two or more of the first unit of measurement configured to calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the first leakage current detector detect leakage current flowing in the cable path will be measured in relation to the load and shape voltage wave detected by a voltage detector the first to detect the voltage applied between two phase connected to the load in the cable path branching from the cable line to be measured which is connected with a three-phase AC power source connected to star or cable path to be measured that is connected with a three-phase circuit consisting of an AC power source three phases connected by a star and branched from Three-phase AC to single-phase AC and distributed, second unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the second leakage current detector detect leakage current flowing in the cable path will be measured in relation to the load and shape voltage wave detected by a voltage detector the second one detects the voltage applied between the two phase connected to the load in the cable path branching from the cable line to be measured which is connected with a three-phase AC power source connected to star or cable path to be measured that is connected with a three-phase circuit consisting of an AC power source three phases connected by a star and branched from Three-phase AC to single-phase AC and distributed, the third unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the third leakage current detector detect leakage current flowing in the phase circuit single branching from the delta connection and form voltage wave detected by a voltage detector the third one detects the voltage applied between the phases. phase connected to the load in the cable path branching from the cable line to be measured which is connected with a delta-connected three-phase AC power source or The cable path to be measured is connected to three-phase circuit consisting of three AC power sources delta connected and branched phases of three-phase AC to Single phase and distributed AC, and the fourth unit of measurement configured for calculate the leakage current component caused by soil insulation resistance based on current waveform leak detected by the fourth leakage current detector detect leakage current flowing in the cable channel will be measured, which is connected to the load, and the form voltage wave detected by a voltage detector the fourth one that detects the voltage applied between the phases phase connected to the load in the cable channel branching from the cable channel to be measured, which connected to a three-phase AC power source that is connected with the delta, or cable channel to be measured, which connected to a three-phase circuit consisting of three-phase AC power source connected in delta, which branching from three-phase AC to single-phase AC and distributed.

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