Split-type measuring device

Abstract

A split-type measuring device according to the present invention comprises: a first ring-shaped core which forms a closed magnetic circuit around a first power line and includes a first upper core and a first lower core; and a second ring-shaped core which forms a closed magnetic circuit around a second power line and includes a second upper core and a second lower core, wherein a current of the first power line is measured using the first ring-shaped core and a current of the second power line is measured using the second ring-shaped core, and a pair of first contact areas in which the first upper core and the first lower core are in contact with each other and a pair of second contact areas in which the second upper core and the second lower core are in contact with each other are disposed to be spaced apart from each other in an extension direction which is a direction in which the first power line and the second power line extend.

Description

Split type measuring device

[0001] The present invention relates to a split-type measuring device having a current measuring function, and also to a measuring device having a detachable temperature measuring module.

[0002] Power measurement in distribution panels and branch panels has typically been measured only at the incoming terminal, but recently, the demand for branch circuit measurement has been increasing for precise management of the power system.

[0003] For this type of measurement, a CT (Current Transformer) is generally installed for each branch circuit and a signal line is connected from each CT to the central measuring device to measure. However, the wiring complexity increases and it is difficult to individually calibrate the CT Module, which limits the ability to increase precision.

[0004] To overcome these limitations, the system was developed to separate the voltage measurement module that measures voltage and the current measurement module that measures current, and to transmit the voltage data measured by the voltage measurement module to the current measurement module installed in each branch circuit, and to use the received voltage data to calculate power, etc.

[0005] Split-type current measurement modules are widely demanded in the field due to their ease of panel fabrication and the ability to perform live-line work when replacing power lines. Research by the inventors has revealed that existing split-type current measurement modules have limitations in increasing accuracy.

[0006] Figure 1 is a conceptual diagram illustrating an example in which an existing split-type current measurement module is applied.

[0007] In each current measuring device (1), three busbars (3) connected to an MCCB (Molded Case Circuit Braker) (2) are passed through, and an annular core (Core) is arranged to surround the busbars (3) to measure current for each busbar (3).

[0008] In a split type current measuring device (1), the upper core and the lower core are in contact to form a closed loop, and the upper core and the lower core are in contact with each other at the contact area (1a). Since there is not much free space between the bus bars, the cores are adjacent to each other, and in order to secure a certain level of core cross-sectional size, the core takes on a long shape in the longitudinal direction of the bus bar.

[0009] In a split-type current measuring device (1), even a conventional configuration like this could achieve a considerable level of measurement precision. However, according to the inventor's research, it was found that the contact areas (1a) and the contact areas (1a) are adjacent to each other, and thus there is a limit to the improvement in precision due to interference between adjacent cores.

[0010] The contact areas (1a) of the cores for measuring adjacent power lines in a three-phase power line connected to the same MCCB are spaced apart by a distance d1, and the contact areas (1a) of the cores for measuring adjacent power lines in a three-phase power line connected to different MCCBs are spaced apart by a distance d2, and d1 and d2 are almost the same when two MCCBs are configured adjacently.

[0011] Since the upper coil and the lower coil are in contact with each other, there was no problem in securing a considerable level of precision in the existing split type current measuring device, but it was found that the proximity between the contact areas (1a) was a problem in improving the precision to secure the highest level of precision.

[0012] The purpose of the present invention is to provide a split-type measuring device that can overcome the limitations of existing measuring accuracy.

[0013] Another object of the present invention is to provide a split type measuring device having improved measuring precision.

[0014] Another object of the present invention is to provide a temperature measuring module and a split-type measuring device that enable easier temperature measurement.

[0015] According to one aspect of the present invention, a split-type measuring device comprises: a first annular core configured to form a magnetic closed circuit around a first power line and composed of a first upper core and a first lower core; and a second annular core configured to form a magnetic closed circuit around a second power line and composed of a second upper core and a second lower core, wherein coupling and separation between an upper module including an upper housing accommodating the first upper core and the second upper core and a lower module including a lower housing accommodating the first lower core and the second lower core are possible, and a split-type measuring device that measures current of the first power line using the first annular core and measures current of the second power line using the second annular core,

[0016] The first annular core and the second annular core are characterized in that they are arranged to be spaced apart from each other in the extension direction in which the first power line and the second power line extend.

[0017] It is characterized in that a pair of first contact areas where the first upper core and the first lower core contact each other and a pair of second contact areas where the second upper core and the second lower core contact each other are arranged to be spaced apart from each other in an extension direction in which the first power line and the second power line extend.

[0018] In the above-described split type measuring device, the pair of first contact areas and the pair of second contact areas may be rectangular areas, and the width in the horizontal direction perpendicular to the extension direction may be greater than 0.5 times the width in the extension direction and less than twice the width in the extension direction.

[0019] In the above-mentioned split type measuring device, the width in the horizontal direction may be the same as the width in the extension direction.

[0020] In the above-described split type measuring device, the distance (L) between the pair of first contact areas and the pair of second contact areas in the extension direction may be greater than or equal to 20 mm.

[0021] In the above split type measuring device, the main body in which the upper module and the lower module are combined has protruding portions on both sides when viewed from above. or It may have the shape of .

[0022] In the above-described split type measuring device, the main body in which the upper module and the lower module are combined may have a protruding portion and a recessed portion formed in succession on a first side, and a protruding portion and a recessed portion formed in succession on a second side opposite to the first side, wherein the recessed portion of the second side may be formed on the opposite side of the protruding portion of the first side, and the protruding portion of the second side may be formed on the opposite side of the recessed portion of the first side.

[0023] In the above-described split type measuring device, when the two main bodies are arranged adjacent to each other, the protruding part of the second main body can be accommodated in the recessed part of the first main body, and the protruding part of the first main body can be accommodated in the recessed part of the second main body.

[0024] In the above-mentioned split type measuring device, for a three-phase, four-wire power line, the first main body can perform current measurement for two of the four power lines, and the second main body can perform current measurement for the remaining two of the four power lines.

[0025] In the above-described split type measuring device, a part of the first annular core may be positioned inside the protruding part of the first side, and a part of the second annular core may be positioned inside the protruding part of the second side.

[0026] In the above-described split-type measuring device, current measurement is performed for two adjacent power lines among two pairs of single-phase power lines using the first annular core and the second annular core, respectively, so that current measurement for the two pairs of single-phase power lines can be performed simultaneously.

[0027] In the above-described split type measuring device, current measurement for a three-phase, three-wire power line can be performed by performing current measurement for two adjacent power lines using the first annular core and the second annular core, respectively.

[0028] In the above-described split type measuring device, the upper portion of the lower housing may be configured with a first cylindrical wall that surrounds the 1-1 contact area closer to the side among the pair of first contact areas and is installed in a square cylindrical shape; and a second cylindrical wall that surrounds the 2-1 contact area closer to the side among the pair of second contact areas and is installed in a square cylindrical shape.

[0029] In the above-described split type measuring device, a third cylindrical wall may be formed in a square shape on the upper part of the lower housing to surround the 1-2 contact area, which is the central contact area among the pair of first contact areas, and the 2-2 contact area, which is the central contact area among the pair of second contact areas.

[0030] In the above-described split type measuring device, an insertion part is formed in the lower part of the upper housing to be inserted into and aligned with a third cylindrical wall and installed downward, and a key piece is formed inside the third cylindrical wall to be installed in a direction perpendicular to the third cylindrical wall, and the key piece can be inserted into a key groove of the insertion part to help the alignment between the upper module and the lower module.

[0031] In the above-described split type measuring device, the combined upper housing and the lower housing are formed with a first line through-hole through which the first power line passes, and a second line through-hole through which the second power line passes, and the upper module may further include a first temperature sensor that is accommodated in the upper housing and is positioned above the first line through-hole to sense the temperature of the first power line; and a second temperature sensor that is accommodated in the upper housing and is positioned above the second line through-hole to sense the temperature of the second power line.

[0032] In the above-described split type measuring device, the device may include a first temperature measuring module that can be detachably coupled to the upper module at a first side of the upper module and senses the temperature of an adjacent power line that does not penetrate; and a second temperature measuring module that can be detachably coupled to the upper module at a second side of the upper module opposite to the first side and senses the temperature of an adjacent power line that does not penetrate.

[0033] In the above-described split type measuring device, each of the first temperature measuring module and the second temperature measuring module may include: a module connecting pin that can be connected to the main body connecting pin of the upper module; a temperature sensor that can move in position by sliding horizontally and senses the temperature of a power line downward; and an FPCB that is interposed between the temperature sensor and the module connecting pin to form a path for an electric signal.

[0034] In the above-described split type measuring device, the device may include a sliding module having the temperature sensor mounted thereon and a window or lens on the lower surface that allows passage of sensing light; and a guide case that guides sliding of the sliding module.

[0035] In the above-described split type measuring device, a flange extending upward and downward around the module connection pin is formed in the guide case, and a trench aligned with the flange is formed around the body connection pin in the upper housing, and the first temperature measurement module or the second temperature measurement module can be mounted by sliding the flange upward and fitting it into the trench.

[0036] In the above-described split type measuring device, it may include a micro-groove formed on the upper surface of the sliding module and having a plurality of micro-grooves formed in the horizontal direction; and a cantilever formed on the upper portion of the guide case and extending in the horizontal direction, and having a protrusion formed at the lower end of the tip to be seated in one of the micro-grooves.

[0037] In the above-described split type measuring device, a plurality of characters indicating the specifications of the MCCB may be printed or engraved on the upper surface of the sliding module next to the plurality of micro-grooves, and a confirmation window may be formed on the upper portion of the guide case in which one of the plurality of characters is exposed.

[0038] According to the split-type measuring device of the present invention, it is easy to arrange the contact areas of the cores so that they are sufficiently spaced apart from each other so that they are not adjacent to each other, thereby minimizing interference between the contact areas and interference with power lines, thereby achieving the effect of significantly improving measurement precision compared to conventional split-type measuring devices. Therefore, it has the effect of overcoming the measurement precision limitations of conventional split-type measuring devices.

[0039] According to the split-type measuring device of the present invention, it is possible to make the contact surface of the upper core and the lower core into a square or a shape with a small difference in width and height, thereby having the effect of further increasing the measurement precision compared to the conventional split-type measuring device.

[0040] According to the split type measuring device of the present invention, the cylindrical wall formed on both sides of the power line secures a clearance between the power line and the contact area (core) and provides perfect insulation, thereby maximizing electrical safety.

[0041] According to the split type measuring device of the present invention, a protruding portion and a recessed portion are formed on a horizontal side, and each protruding portion is configured to align with a recessed portion on the opposite side, thereby enabling easy application by closely contacting a plurality of split type measuring devices in the horizontal direction.

[0042] According to the split type measuring device and temperature measuring module of the present invention, since the user can configure the temperature measuring module in a detachable manner, the temperature can be sensed even for adjacent power lines that do not pass through the main body, and there is an effect that the temperature measuring module can be removed and applied as the same main body in an application where the main bodies are arranged in succession.

[0043] According to the split type measuring device and temperature measuring module of the present invention, the position of the temperature sensor extending from the main body can be adjusted, so that the temperature of the external power line can be sensed in accordance with power line spacing of various standards (MCCB of various standards).

[0044] According to the split type measuring device and temperature measuring module of the present invention, it is easy to set the position of the temperature sensor in accordance with the specifications of the MCCB and to align the temperature sensor so that it is exactly above the power line.

[0045] Figure 1 is a conceptual diagram illustrating an example in which an existing split-type current measurement module is applied.

[0046] FIG. 2 and FIG. 3 are perspective views illustrating an external appearance of a split-type measuring device according to one embodiment of the present invention.

[0047] Figures 4 and 5 are perspective views of the exterior showing the upper module, the lower module, and the temperature measurement module separated from each other.

[0048] FIG. 6 and FIG. 7 are exploded perspective views showing a temperature measurement module and an upper module in a split-type measuring device according to one embodiment of the present invention.

[0049] FIGS. 8 and 9 are exploded perspective views illustrating a lower module in a split-type measuring device according to one embodiment of the present invention.

[0050] Figure 10 is a perspective view illustrating a temperature measurement module according to one embodiment of the present invention.

[0051] Figures 11 and 12 are perspective views illustrating an exploded view of a temperature measurement module according to one embodiment of the present invention.

[0052] FIG. 13 is a schematic diagram illustrating a split-type measuring device according to one embodiment of the present invention.

[0053] FIG. 14 is a schematic diagram showing a state in which a split-type measuring device according to one embodiment of the present invention is mounted on three-phase, three-wire power lines.

[0054] FIG. 15(a) is a diagram schematically illustrating a state in which a split-type measuring device according to one embodiment of the present invention is mounted on two single-phase power lines, and FIG. 15(b) is a diagram schematically illustrating a state in which a split-type measuring device according to one embodiment of the present invention is mounted on a three-phase, four-wire power line.

[0055] FIG. 16 is a schematic diagram showing a state in which a temperature measurement module is mounted on a main body of a split-type measuring device according to one embodiment of the present invention. FIG. 16(a) and FIG. 16(b) show different examples of mounting on a three-phase, three-wire power line, and FIG. 16(c) shows an example of mounting on two pairs of single-phase power lines.

[0056] Fig. 17 is a diagram showing a simulation situation, in which Fig. 17(a) shows two cores (therefore, CTs) spaced apart in the horizontal direction similar to the prior art, and Fig. 17(b) shows two cores (CTs) spaced apart in the extension direction like the embodiment of the present invention.

[0057] Fig. 18 is a visual representation of the magnetic flux density (peak value) in adjacent cores (CT), according to the arrangement (horizontal spacing) of Fig. 17(a).

[0058] Fig. 19 is a visual representation of the magnetic flux density (peak value) in adjacent cores (CT), according to the arrangement (extension direction spacing) of Fig. 17(b).

[0059] Fig. 20 is a graph showing the crosstalk ratio according to the spacing between cores (CT), according to the arrangement (horizontal spacing) of Fig. 17(a).

[0060] Fig. 21 is a graph showing the crosstalk ratio according to the spacing between cores (CT), according to the arrangement (extension direction spacing) of Fig. 17(b).

[0061] Figure 22 is a diagram showing a simulation situation performed to determine a separation distance with little influence from crosstalk.

[0062] Figure 23 is a table showing the output voltage and crosstalk ratio.

[0063] Figures 2 and 3 are perspective views illustrating an external appearance of a split-type measuring device according to one embodiment of the present invention. Figures 4 and 5 are perspective views illustrating an external appearance of an upper module, a lower module, and a temperature measurement module separated from each other.

[0064] A split-type measuring device (10) according to one embodiment of the present invention is installed for each branch circuit in a distribution panel or a power distribution board, and each split-type measuring device (10) is connected to a central measuring device via a data communication line, and after receiving voltage data from the central measuring device, calculates a power value using the current measured by itself, and transmits the calculated power value to the central measuring device.

[0065] A split-type measuring device (10) according to one embodiment of the present invention is configured to include an upper module (100), a lower module (200), a first temperature measuring module (300), and a second temperature measuring module (400). As can be seen from the name of the split-type measuring device (10) according to one embodiment of the present invention, the upper module (100) and the lower module (200) can be separated and combined by a user. The upper module (100) and the lower module (200) constitute the main body (11) of the split-type measuring device.

[0066] The upper module (100) and lower module (200) that are interconnected are provided with a first line penetration hole (T1) through which a power line such as a busbar or wire passes, and a second line penetration hole (T2) through which another power line passes. The housing is provided with a first line penetration hole (T1) through which a first power line passes, and a second line penetration hole (T2) through which a second power line passes.

[0067] A split type measuring device according to one embodiment of the present invention can be installed by mounting a lower module (200) on a panel of a distribution board or a switchboard through which two power lines (busbars or wires) pass, for example, using bolts (P2, P3) or pieces, and then placing the power lines in areas that will become line penetration holes (T1, T2), and then connecting an upper module (100) on the lower module (200) using bolts (P1).

[0068] Line penetration holes (T1, T2) are formed in the main body (11) in accordance with the direction in which the power line extends (hereinafter also referred to as the “extension direction”) (X direction) and are configured as an approximately square column-shaped empty space in the extension direction. Although not exposed on the exterior of the combined main body, as described later, a first annular core is arranged around the first line penetration hole (T1), and a second annular core is arranged around the second line penetration hole (T2). The main body (11) includes a first annular core, a second annular core, a housing, etc.

[0069] Uniquely, there is a step on the side that is perpendicular to the extension direction (X direction) of the main body (11) and in the direction (Y direction) crossing the two power lines. The first side is composed of the 1-1 side (S11) and the 1-2 side (S12), and there is a step between the 1-1 side (S11) and the 1-2 side (S12), and the second side is composed of the 2-1 side (S21) and the 2-2 side (S22), and there is a step between the 2-1 side (S21) and the 2-2 side (S22).

[0070] The 1-2 side (S12) is in a more sunken position than the 1-1 side (S11) and forms a sunken portion next to the 1-2 side (S12), and the 2-2 side (S22) is in a more sunken position than the 2-1 side (S21) and forms a sunken portion next to the 2-2 side (S22).

[0071] When viewed in reverse, the 1-1 side (S11) is positioned at a position more protruding than the 1-2 side (S12), so that the main body forms a protruding portion reaching the 1-1 side (S11), and the 2-1 side (S21) is positioned at a position more protruding than the 2-2 side (S22), so that the main body forms a protruding portion reaching the 2-1 side (S21). The 1-2 side (S12) meets the 1st line through-hole (T1) and is cut off in the middle thereof, and the 2-2 side (S12) meets the 2nd line through-hole (T2) and is cut off in the middle thereof.

[0072] On the first side and the second side, the recessed portion and the protruding portion are perpendicular to the extension direction and extend with the same profile in the vertical direction (Z direction).

[0073] A connector (171, 172) for supplying power and transmitting communication signals is exposed on the upper surface of the upper module (100), and a first temperature measurement module (300) can be mounted on the first side (specifically, the 1-2 side (S12)), and a second temperature measurement module (400) can be mounted on the second side (specifically, the 2-2 side (S22)).

[0074] The upper module (100) and the lower module (200) are essentially configured, but the first temperature measurement module (300) and the second temperature measurement module (400) may both be configured, or only one of them may be configured, or neither may be configured.

[0075] The temperature measurement module (300, 400) can be used to measure the temperature of adjacent power lines that do not penetrate the main body (11), and when the temperature measurement module is used, it is installed by sliding from the bottom to the top of the main body (upper module) and then fixed.

[0076] When the first temperature measurement module (300) is not configured, the first cover (510) is slidably fitted into the upper module (100) to block the portion where the first temperature measurement module (300) is to be coupled, and when the second temperature measurement module (400) is not configured, the second cover (520) is slidably fitted into the upper module (100) to block the portion where the second temperature measurement module (400) is to be coupled.

[0077] The first temperature measurement module (300) can be detachably coupled to the upper module (100) at the first side of the main body (10) (specifically, the upper module (100)) and senses the temperature of an adjacent power line that does not penetrate therethrough. The second temperature measurement module (400) can be detachably coupled to the upper module (100) at the second side opposite the first side of the main body (10) (specifically, the upper module (100)) and senses the temperature of another adjacent power line that does not penetrate therethrough.

[0078] Figures 6 and 7 are exploded perspective views illustrating a temperature measurement module and an upper module in a split-type measuring device according to one embodiment of the present invention. Figures 8 and 9 are exploded perspective views illustrating a lower module in a split-type measuring device according to one embodiment of the present invention.

[0079] The upper module (100) is configured to include a first upper core (111), a second upper core (121), a first upper bobbin (112), a second upper bobbin (122), an upper PCB assembly (130), a first upper housing (140), a second upper housing (150), a first plate spring (181), a second plate spring (182), an upper cover (160), and a main PCB assembly (170).

[0080] The lower module (200) is configured to include a first lower core (211), a second lower core (221), a first lower bobbin (212), a second lower bobbin (222), a first lower PCB assembly (240), a second lower PCB assembly (250), a first lower housing (260), and a second lower housing (270).

[0081] The housing of the main body (11) is configured to include a first upper housing (140), a second upper housing (150), a first lower housing (260), and a second lower housing (270). The upper housing accommodates a first upper core, a second upper core, etc., and includes a first upper housing (140) and a second upper housing (150). The lower housing accommodates a first lower core, a second lower core, etc., and includes a first lower housing (260) and a second lower housing (270).

[0082] The first upper core (111) and the first lower core (211) in contact with each other form a first annular core in an annular shape, and the first annular core forms a magnetic closed circuit around the first power line passing through the first line through-hole (T1). The first upper core (111) and the first lower core (211) have a rectangular cross-section and are extended so that the rectangular cross-section forms a closed loop. The first annular core is aligned so that the central through-hole eventually coincides with the first line through-hole (T1).

[0083] When the upper module (100) and the lower module (200) are combined, the first upper core (111) and the first lower core (211) contact each other while forming a pair of first contact areas in the shape of a square.

[0084] One of the first contact areas is an area where one end of the first upper core (111) and one end of the first lower core (211) come into contact, and the other of the first contact areas is an area where the other end of the first upper core (111) and the other end of the first lower core (211) come into contact.

[0085] The first upper bobbin (112) surrounds the first upper core from the upper portion of the first upper core (111) and provides a frame capable of winding (or being wound) the first upper coil (not shown) and provides insulation from the first upper coil. The first lower bobbin (212) surrounds the first lower core from the lower portion of the first lower core (211) and provides a frame capable of winding (or being wound) the first lower coil (not shown) and provides insulation from the first lower coil.

[0086] The second upper core (121) and the second lower core (221) in contact with each other form a second annular core in an annular shape, and the second annular core forms a magnetic closed circuit around the second power line passing through the second line through-hole (T2). The second upper core (121) and the second lower core (221) have a rectangular cross-section and are extended so that the rectangular cross-section forms a closed loop. The second annular core is aligned so that the central through-hole eventually coincides with the second line through-hole (T2).

[0087] When the upper module (100) and the lower module (200) are combined, the second upper core (121) and the second lower core (221) come into contact with each other while forming a second contact area having a square shape.

[0088] One of the second contact areas is an area where one end of the second upper core (121) and one end of the second lower core (221) come into contact, and the other of the second contact areas is an area where the other end of the second upper core (121) and the other end of the second lower core (221) come into contact.

[0089] The second upper bobbin (122) surrounds the second upper core from the upper portion of the second upper core (121) and provides a frame capable of winding (or being wound) the second upper coil (not shown) and provides insulation from the second upper coil. The second lower bobbin (222) surrounds the second lower core from the lower portion of the second lower core (221) and provides a frame capable of winding (or being wound) the second lower coil (not shown) and provides insulation from the second lower coil.

[0090] The first plate spring (181) has wing portions (181b, 181c) extending downward on both sides of the plate-shaped central portion (181a), and is positioned above the first upper bobbin (112) to press the first upper bobbin (112) downward, thereby promoting close contact between the first upper core and the first lower core. The second plate spring (182) has wing portions (182b, 182c) extending downward on both sides of the plate-shaped central portion (182a), and is positioned above the second upper bobbin (122) to press the second upper bobbin (122) downward, thereby promoting close contact between the second upper core and the second lower core.

[0091] The upper housing is composed of a first upper housing (140) and a second upper housing (150) to accommodate various components constituting the upper module (100), and the internal space between the two accommodates a first upper core (111), a second upper core (121), a first upper bobbin (112), a second upper bobbin (122), a first plate spring (181), a second plate spring (182), and an upper PCB assembly (130).

[0092] The first upper housing (140) has an outer line or The second upper housing (150) has a shape that extends vertically (in the Z direction) and provides space therein, and has an opening that blocks the lower part of the first upper housing (140) but allows the lower ends of the first upper core (111) and the second upper core (121) and the lower ends of the first upper pogo pin (133) and the second upper pogo pin (134) extending downward from the upper PCB assembly (130) to penetrate and be slightly exposed. The second upper housing (150) is formed with a first upper trench (t1) and a second upper trench (t2) in an inverted U shape that form approximately half of the first line through-hole (T1) and the second line through-hole (T2), respectively.

[0093] A first upper plug portion (153) and a second upper plug portion (154) extending downward are formed in the second upper housing (150).

[0094] The first upper plug part (153) includes a first plug block (153a) having a roughly short rectangular column shape on the outer surface, a first core penetration hole (153b) which is a rectangular column space formed in the first plug block (153a) through which the first upper core (111) passes, and a first pogo pin penetration hole (153c) which is a cylindrical space formed in the first plug block (153a) through which the first upper pogo pin (133) passes.

[0095] The second upper plug part (154) includes a second plug block (154a) having a roughly short rectangular column shape on the outer surface, a second core penetration hole (154b) which is a rectangular column space formed in the second plug block (154a) through which the second upper core (121) passes, and a second pogo pin penetration hole (154c) which is a cylindrical space formed in the second plug block (154a) through which the second upper pogo pin (134) passes.

[0096] The first upper housing (140) forms a first upper space (E1) that accommodates a first upper core (111), a second upper core (121), a first upper bobbin (112), a second upper bobbin (122), and an upper PCB assembly (130) with the housing partition wall (141) as the center, and a second upper space (E2) that accommodates the upper PCB assembly (130).

[0097] The upper PCB assembly (130) is accommodated in the first upper space (E1) and includes a PCB substrate (137), a first temperature sensor (131), a second temperature sensor (132), an upper pogo pin (133, 134), a body connection pin (135, 136), a first upper socket (139a), a second upper socket (139b), and a connection pin (138).

[0098] The upper pogo pins (133, 134) are mounted from the lower portion of the PCB substrate (137) and are for transmitting signals to the first lower PCB assembly (240) and the second lower PCB assembly (250), respectively. The main body connection pins (135, 136) are mounted on the upper surface of the PCB substrate (137) and are for transmitting signals to the first temperature measurement module (300) and the second temperature measurement module (400). Both ends of the first upper coil are connected to the first upper socket (139a), and both ends of the second upper coil are connected to the second upper socket (139b). The connection pin (138) is for transmitting signals to the main PCB assembly (170).

[0099] The first temperature sensor (131) is housed in a housing (upper housing) and is positioned above (or below) the first line penetration hole (T1) to sense the temperature of the first power line. The first temperature sensor (131) is mounted on the lower surface of the PCB substrate (137) and allows passage of sensing light through a window (A) formed in the second upper housing (150).

[0100] The first temperature sensor (131) measures the temperature of the first power line passing through the first line penetration hole (T1) at the top of the first upper trench (t1).

[0101] The second temperature sensor (132) is housed in a housing (upper housing) and is positioned above (or below) the second line penetration hole (T2) to sense the temperature of the second power line. The second temperature sensor (132) is mounted on the lower surface of the PCB substrate (137) and allows passage of sensing light through a window formed in the second upper housing (150). The second temperature sensor (132) measures the temperature of the second power line passing through the second line penetration hole (T2) at the upper portion of the second upper trench (t2).

[0102] A lens may be provided in the window (A) or between the temperature sensor and the window (A). The lens may be used to focus the sensing light, narrow the angle (range) sensed by the temperature sensor, and accurately sense only the power line. A filter may be provided in the window (A) or between the temperature sensor and the window (A). The filter allows a portion (e.g., the central portion) of the sensing light to pass through, narrowing the angle (range) sensed by the temperature sensor, and accurately sense only the power line.

[0103] The temperature sensor (131, 132) is a non-contact temperature sensor, for example, an infrared temperature sensor.

[0104] The main PCB assembly (170) is accommodated in the second upper space (E2) and comprises a PCB (173) and a first connector (171), a second connector (172), and a third connector (174) mounted on the PCB (173). The upper cover (160) covers the exposed second upper space (E2) of the first upper housing (140).

[0105] The first connector (171) and the second connector (172) can be used to supply power and transmit communication signals in a daisy chain topology. The third connector (174) can be used to connect an additional sensor module, for example, to connect a ZCT module to a split-type measuring device (main body).

[0106] In addition, the split type measuring device can be divided into two types, and can be used by dividing them into a main split type measuring device and a sub-split type measuring device. The main split type measuring devices are connected in a daisy chain topology using the first connector (171) and the second connector (172), and the sub-split type measuring device can be connected to the main split type measuring device using the third connector (174). For example, when measuring a three-phase, four-wire power line as shown in Fig. 15(b), one of the two split type measuring devices can be used as a main split type measuring device and the other as a sub-split type measuring device.

[0107] The lower housing is composed of a first lower housing (260) and a second lower housing (270), and accommodates components constituting the lower module, specifically, a first lower core (211), a second lower core (221), a first lower bobbin (212), a second lower bobbin (222), a first lower PCB assembly (240), and a second lower PCB assembly (250).

[0108] The second lower housing (270) has an outer line or The shape of the first lower housing (260) extends vertically (in the Z direction) and provides space therein. The first lower housing (260) blocks the upper part of the second lower housing (270), but exposes the upper parts of the first lower core (211) and the second lower core (221), and allows the upper parts of the first lower pogo pin (242) and the second lower pogo pin (252) to pass through and be exposed. The first lower housing (260) is formed with a first lower trench (t3) and a second lower trench (t4) each having an approximately U shape to form approximately half of the first line through-hole (T1) and the second line through-hole (T2). A first line penetration hole (T1) through which a first power line passes, and a second line penetration hole (T2) through which a second power line passes, are formed in the upper housing and the lower housing that are connected to each other.

[0109] The first lower PCB assembly (240) includes a PCB (241), a first lower socket (243) to which both ends of the first lower coil (not shown) are connected, and a first lower pogo pin (242) that contacts the first upper pogo pin. The second lower PCB assembly (250) includes a PCB (251), a second lower socket (253) to which both ends of the second lower coil (not shown) are connected, and a second lower pogo pin (252) that contacts the second upper pogo pin.

[0110] On the upper part of the lower housing (specifically, the first lower housing (260)), a third cylindrical wall (262) is formed in a square shape and surrounds the first-second contact area, which is the central contact area among a pair of first contact areas, and the second-second contact area, which is the central contact area among a pair of second contact areas.

[0111] The interior of the third cylindrical wall (262) has a key piece (D) that is installed perpendicularly between the third cylindrical wall and the floor and has a shape roughly like a triangular plate. The key piece (D) is inserted into the key groove (F) of the insertion portion (151) to help align the upper module (100) and the lower module (200).

[0112] In addition, the first cylindrical wall (261) is installed in a square cylindrical shape to surround the 1-1 contact area closer to the side among the pair of first contact areas, and the second cylindrical wall (264) is installed in a square cylindrical shape to surround the 2-1 contact area closer to the side among the pair of second contact areas.

[0113] Inside the first cylindrical wall (261), an end of the first upper core (111) and a first upper plug (153) are received from an open upper side, and inside the second cylindrical wall (264), an end of the second upper core (121) and a second upper plug (154) are received from an open upper side.

[0114] The first cylindrical wall (261) completely surrounds the first contact area (specifically, the 1-1 contact area) to ensure complete insulation and clearance with the first power line, and furthermore, complete insulation and clearance with other adjacent power lines that do not penetrate the split-type measuring device. The second cylindrical wall (264) completely surrounds the second contact area (specifically, the 2-1 contact area) to ensure complete insulation and clearance with the second power line, and furthermore, complete insulation and clearance with other adjacent power lines that do not penetrate the split-type measuring device.

[0115] The third cylindrical wall (262) completely surrounds the first-second contact area and the second-second contact area, thereby ensuring complete insulation and clearance between the first power line and the second power line.

[0116] According to the split type measuring device of the present invention, the cylindrical wall formed on both sides and in the center of the power line secures a clearance between the power line and the contact area (core) and provides perfect insulation, thereby maximizing electrical safety.

[0117] An insertion portion (151) is formed at the lower portion of the upper housing to be inserted and aligned with the third cylindrical wall. The insertion portion (151) has a plug shape that extends downward between the first upper trench (t1) and the second upper trench (t2), and allows the penetration of the first upper core and the second upper core. A keyway (F) into which a key piece (D) is inserted is provided on the side of the insertion portion (151). The horizontal depth of the keyway (F) becomes narrower from the bottom to the top, corresponding to the narrowing of the key piece (D), which is shaped like a triangular plate, from the bottom to the top.

[0118] Fig. 10 is a perspective view illustrating a temperature measurement module according to one embodiment of the present invention. Figs. 11 and 12 are perspective views illustrating an exploded view of a temperature measurement module according to one embodiment of the present invention.

[0119] Since the structures of the first temperature measurement module (300) and the second temperature measurement module (400) are the same, only the 'temperature measurement module (300)' will be described below. The temperature measurement module (300) is configured to include a temperature sensor module (310), a connecting means (320; 321, 322), a sliding module (330 and 340), and a guide case (350 and 360).

[0120] The temperature sensor module (310) has a temperature sensor (311) mounted on the lower surface of the PCB substrate (312), and the temperature sensor (311) faces downward through the window (343) of the sliding module. The temperature sensor module (310) (and the temperature sensor (311)) fixedly mounted on the sliding module can slide in the horizontal direction (Y) together with the sliding modules (330 and 340) to move in a relative position with respect to the main body (10) (upper module (100)), and the temperature sensor (311) faces downward to sense the temperature of the power line, and is a non-contact type, for example, an infrared temperature sensor.

[0121] The connecting means (320; 321, 322) is a means for electrically connecting between the temperature sensor (311) and the main body connecting pins (135, 136), and is configured to include a module connecting pin (322) and an FPCB (321).

[0122] The FPCB (321) is interposed between the temperature sensor (311) and the module connection pin (322) to form a path for an electric signal, and can be flexibly bent even when the temperature sensor (311) and the sliding modules (330 and 340) move in position. The module connection pin (322) is configured with a plurality of spring pins (322a) on the side facing the main body (10), and elastically connects one-to-one with the spring pins configured in the main body connection pins (135, 136) to transmit an electric signal.

[0123] The sliding module (330 and 340) is equipped with a temperature sensor (311) and has a window (343) on the lower surface that allows the passage of sensing light. A lens may be provided on the window (343) or between the window (343) and the temperature sensor (311). The lens can be used to focus the sensing light, thereby narrowing the angle (range) sensed by the temperature sensor (311) to accurately sense only the power line. The sliding module is provided with a first guide protrusion (342) facing downward at the lower portion and a second guide protrusion (332) facing upward at the upper portion. In addition, a grip protrusion (341) is formed at the end of the sliding module to make it easy for a user to hold it by hand.

[0124] The guide cases (350 and 360) guide the sliding of the sliding module and are configured to include an upper guide case (350) and a lower guide case (360). A sliding module is mounted between the upper guide case (350) and the lower guide case (360) and configured to be able to slide in the horizontal direction (Y direction).

[0125] A second guide protrusion (332) of the sliding module is seated in a second guide groove (352) penetrating the upper surface of the upper guide case (350), so that the sliding module can move in a straight line within a predetermined range, and a first guide protrusion (342) of the sliding module is seated in a first guide groove (362) penetrating the lower surface of the lower guide case (360), so that the sliding module can move in a straight line within a predetermined range.

[0126] The guide cases (350 and 360) are provided with flanges (303: 353 and 363) extending vertically around the module connection pin (322). The flanges (303) have the same thickness and extend vertically (Z direction), and a groove is provided on the inside thereof that extends vertically (Z direction) in contact with the flanges.

[0127] And, around the main body connection pins (135, 136), a trench (143a, 143b) that matches the flange (303: 353 and 363) is formed in the upper housing (100) of the main body (10), and the lower end of the trench (143a, 143b) has an open entrance and the upper end is closed. Therefore, the temperature measurement module can be mounted by sliding the flange (303) from the bottom to the top into the trench from the lower end of the open trench (143a, 143b). A hook (354) is provided on the upper part of the main body side of the upper case (350), and when the flange (353 and 363) is fully inserted into the trench, the hook (354) is seated in the hook groove (144a, 144b) of the upper housing (140), thereby preventing the temperature sensor module from being dislodged downward.

[0128] When the temperature measurement module (300, 400) is not configured, the cover can be mounted by sliding the cover flange (510a, 520a) from the bottom to the top and fitting it into the trench from the bottom of the open trench (143a, 143b; see FIGS. 4 and 5). The cover is provided with a cover hook (510b, 520b), and when the cover flange (510a, 520a) is fully inserted into the trench, the cover hook (510b, 520b) is seated in the hook groove (144a, 144b) of the upper housing (140), thereby preventing the cover from being dislodged downward.

[0129] On the upper surface of the sliding module, a plurality of micro grooves (331) are formed in the horizontal direction (Y direction). In addition, on the upper surface of the sliding module, a plurality of characters indicating the specifications of the MCCB are printed or engraved next to the plurality of micro grooves (331), and the number of characters is the same as the number of micro grooves (331). For example, the characters 60A, 125A, and 250A are engraved, respectively.

[0130] In addition, a cantilever (351) is formed on the upper part of the guide case, and the cantilever (351) also extends in the horizontal direction (Y direction), and a protrusion (351a) that is seated in one of the micro grooves (331) is formed on the lower part of the tip. When the user adjusts the position of the sliding module, the protrusion (351a) of the cantilever (351) will be positioned in one of the micro grooves (331).

[0131] And, a confirmation window (356) is formed on the upper part of the guide case, in which one of a plurality of characters is exposed, and for example, one of 60A, 125A and 250A is visible through the confirmation window (356) depending on the micro-home (331) in which the protrusion (351a) is seated.

[0132] According to a temperature measurement module according to one embodiment of the present invention, the position of the temperature sensor (311) extending from the main body (10) can be adjusted, so that the temperature of the power line can be sensed in accordance with power line spacing of various standards (MCCB of various standards).

[0133] In addition, according to the temperature measurement module according to one embodiment of the present invention, there is an effect that it is easy to set the position of the temperature sensor (311) in accordance with the specifications of the MCCB and to align the temperature sensor (311) so that it is exactly above the power line.

[0134]

[0135] Fig. 13 is a diagram schematically illustrating a split-type measuring device according to an embodiment of the present invention. Fig. 14 is a diagram schematically illustrating a state in which a split-type measuring device according to an embodiment of the present invention is mounted on three-phase, three-wire power lines. Fig. 15(a) is a diagram schematically illustrating a state in which a split-type measuring device according to an embodiment of the present invention is mounted on two single-phase power lines, and Fig. 15(b) is a diagram schematically illustrating a state in which a split-type measuring device according to an embodiment of the present invention is mounted on a three-phase, four-wire power line.

[0136] The split type measuring device (10) measures the current of the first power line (4A in Fig. 14(a) and 4B in Fig. 14(b)) using the first annular core composed of the first upper core (111) and the first lower core (211), and measures the current of the second power line (4B in Fig. 14(a) and 4C in Fig. 14(b)) using the second annular core composed of the second upper core (122) and the second lower core (221).

[0137] A pair of first contact areas (11a, 11b) where the first upper core (111) and the first lower core (211) contact each other and a pair of second contact areas (12a, 12b) where the second upper core (122) and the second lower core (221) contact each other have the characteristic of being arranged to be spaced apart from each other in the extension direction (X direction) in which the first power line and the second power line extend.

[0138] A pair of first contact areas (11a, 11b) includes a 1-1 contact area (11a) close to the first side and a 1-2 contact area (11b) inside (i.e., in the center) thereof, and a pair of first contact areas formed on the same annular core are naturally at the same position in the extension direction (X direction). A pair of second contact areas (12a, 12b) includes a 2-1 contact area (12a) close to the second side and a 2-2 contact area (12b) inside (i.e., in the center) thereof, and a pair of second contact areas formed on the same annular core are naturally at the same position in the extension direction (X direction).

[0139] And preferably, the first-second contact area (11b) and the second-second contact area (12b) are at the same position in the transverse direction (Y direction). As can be seen with reference to Fig. 7, the first-second contact area (11b) and the second-second contact area (12b) being at the same position in the transverse direction (Y direction) facilitates the design of the insertion portion (151) and optimizes the transverse width of the device.

[0140] As illustrated in Fig. 13, the first contact area and the second contact area are sufficiently spaced apart by a distance L in the extension direction, and the split type measuring device of the present invention can realize such spaced arrangement very easily.

[0141] In a split-type measuring device according to one embodiment of the present invention, the first annular core and the second annular core have the characteristic of being arranged to be spaced apart from each other in the extension direction (X direction) in which the first power line and the second power line extend.

[0142] As shown in Fig. 1, according to the existing split type measuring device, the three annular cores are not spaced apart at all in the extension direction (X direction) and are arranged at the same position in the extension direction (X direction).

[0143] According to the split-type measuring device of the present invention, it is easy to arrange the contact areas of the cores so that they are sufficiently spaced apart from each other so that they are not adjacent to each other, thereby minimizing interference between the contact areas and interference with power lines, thereby achieving the effect of significantly improving measurement precision compared to conventional split-type measuring devices. Therefore, it has the effect of overcoming the measurement precision limitations of conventional split-type measuring devices.

[0144] According to the split type measuring device of the present invention, a pair of first contact areas (11a, 11b) and a pair of second contact areas (12a, 12b) are rectangular areas, and the width (W1) in the horizontal direction perpendicular to the extension direction is preferably larger than 0.5 times the width (W2) in the extension direction and smaller than twice the width in the extension direction, and more preferably, the width (W1) in the horizontal direction is equal to the width (W2) in the extension direction.

[0145] In a split type measuring device according to one embodiment of the present invention, a distance (L) between a pair of first contact areas and a pair of second contact areas in an extension direction is set to be 3.4 times or greater than a width (W1) of the first contact area and the second contact area in a horizontal direction perpendicular to the extension direction.

[0146] Fig. 17 is a diagram showing a simulation situation, in which Fig. 17(a) shows two cores (therefore, CTs) spaced apart in the horizontal direction similar to the prior art, and Fig. 17(b) shows two cores (CTs) spaced apart in the extension direction like the embodiment of the present invention.

[0147] The current flowing in the power line (busbar) is 60 A, the horizontal separation between cores (and therefore the separation between contact areas) (M1) in Fig. 17(a) is 5 mm, the extension separation between cores (and therefore the separation between contact areas) (M2) in Fig. 17(b) is 5 mm, the cross-sectional size of the core and contact area is 6x6 mm, the height of the core (H1) is 51.3 mm, the width of the core (H2) is 31.0 mm, the number of winding turns is 1500 turns, and the diameter of the winding is 0.16 mm.

[0148] Figures 18 and 19 are visual representations of the magnetic flux density (peak value) in adjacent cores (CT), with Figure 18 according to the arrangement (transverse spacing) of Figure 17(a) and Figure 19 according to the arrangement (extension spacing) of Figure 17(b).

[0149] Figures 20 and 21 are graphs showing the crosstalk ratio according to the spacing between cores (CT). Figure 20 is according to the arrangement (horizontal spacing) of Figure 17(a), and Figure 21 is according to the arrangement (extension spacing) of Figure 17(b).

[0150] When the spacing between the cores is the same, it can be seen that the crosstalk ratio is lower when the two cores are arranged in the extension direction (front-to-back) than when they are arranged horizontally. It can be seen that the crosstalk ratio of the extension direction is lower than that of the horizontal arrangement at all spacings of 5 mm, 10 mm, 20 mm, 30 mm, and 40 mm, which is much better. The crosstalk ratio is lower when the two CTs are arranged front-to-back than when they are next to each other at the same spacing between the CTs. When the two CTs are arranged in the direction of progression (front-to-back), the crosstalk ratio is very low, at approximately 0.165 to 0.17% when the spacing between the CTs is 20 mm or more.

[0151] Fig. 22 is a diagram illustrating a simulation situation performed to determine a separation distance with little influence of crosstalk. Fig. 22(a) and Fig. 22(b) illustrate a simulation situation in which a pair of cores (CT) are arranged in an extended direction. In Fig. 22(a), the power line passes through the left core (CT), and in Fig. 22(b), the power line passes through the right core (CT). Fig. 22(c) and Fig. 22(d) illustrate a simulation situation in which only one core (CT) is configured. In Fig. 22(c), the power line passes through the core (CT), and in Fig. 22(d), the power line is located in a space without a core (CT).

[0152] In the simulation, the current flowing in the power line (busbar) is 60 A, and other conditions are the same as those in Fig. 17.

[0153] Fig. 23 is a table showing the output voltage and crosstalk ratio. The table in Fig. 23(a) shows the output voltage and crosstalk ratio obtained in the arrangements in Fig. 22(a) and Fig. 22(b), and the table in Fig. 23(b) shows the output voltage and crosstalk ratio obtained in the arrangements in Fig. 22(c) and Fig. 22(d).

[0154] When excluding one CT, the crosstalk ratio is 0.161%, which means that there is no influence from adjacent CTs. However, when the two CTs are spaced apart, it is 0.166%, and according to the simulation results in Figure 21, it is lower than 0.17% when the distance between the two CTs is 20 mm or more. Then, it can be seen that the influence of adjacent CTs on crosstalk is almost non-existent when the distance between the two CTs is at least 20 mm or more. When two cores are arranged in the extension direction, the influence of adjacent cores on crosstalk is almost non-existent when the distance between the cores is 20 mm or more.

[0155] As shown in Fig. 1, in a conventional split-type measuring device, the width of the contact area in the horizontal direction (see W0 in Fig. 1) cannot but be narrow, and accordingly, when combining the upper module and the lower module, there is a concern that even a slight misalignment between the upper core and the lower core may cause a significant reduction in the area of ​​the contact area.

[0156] In a conventional split-type measuring device, two contact areas had to be placed together within the gap (horizontal gap) between two power lines, but according to the split-type measuring device of the present invention, one contact area only needs to be placed within the same gap, so the horizontal width of the contact area can be significantly increased.

[0157] Therefore, according to the split type measuring device of the present invention, it is easy to increase the horizontal width of the contact area, and there is an advantage in that the reduction in the area of ​​the contact area can be significantly reduced even if the alignment between the upper core and the lower core is misaligned.

[0158] As illustrated in Fig. 14, the split-type measuring device (main body) of the present invention is applied to two adjacent power lines in a three-phase, three-wire power line, and current measurement is performed using the first annular core and the second annular core, respectively, thereby performing current measurement for the three-phase, three-wire power line.

[0159] The single split-type measuring device proposed in the present invention can measure the current of a three-phase MCCB (power line connected to a three-phase MCCB). Since the sum of the three-phase currents is zero even if one phase is not measured, one phase can be calculated using two phases, thereby eliminating the hardware for measuring the remaining phase. Depending on the ease of MCCB configuration, the measuring method illustrated in Fig. 14(a) or the measuring method illustrated in Fig. 14(b) can be selected and configured.

[0160] As illustrated in Fig. 15(a), current measurement for two adjacent power lines in two pairs of single-phase power lines connected to two MCCBs is performed using the first annular core and the second annular core included in a single split-type measuring device, respectively, thereby allowing current measurement for two single-phase power lines to be performed simultaneously.

[0161] In order to measure current in a single-phase MCCB configuration of the same capacity in series, it has the advantage of being able to handle two single-phase MCCBs by measuring the current of one circuit (power line) of each MCCB with one split-type measuring device, thereby reducing the unit cost of panel production.

[0162] As illustrated in Fig. 15(b), using the split type measuring device of the present invention, for a three-phase, four-wire MCCB and power lines, the first main body (10A) can perform current measurement for two of the four power lines, and the second main body (10B) can perform current measurement for the remaining two of the four power lines.

[0163] In a 3-phase, 4-wire system, the current of all four circuits (power lines) must be measured independently, so measuring devices used for the 3-phase, 3-wire system cannot be used. Therefore, previously, products for measuring the 3-phase, 4-wire system had to be manufactured and supplied separately. However, according to the split-type measuring device proposed in the present invention, the split-type measuring device applicable to single-phase and 3-phase, 3-wire circuits can be used as is, but has the advantage of being able to respond to the 3-phase, 4-wire configuration with two split-type measuring devices.

[0164] The main body (10) in which the upper module and the lower module are combined has protruding and recessed portions on both sides (horizontal direction) when viewed from above. or It is characterized by having a shape. In the main body (10) in which the upper module and the lower module are combined, a protruding portion (P1; see FIG. 13) and a recessed portion (Q1) are formed in succession on a first side in the horizontal direction, and a protruding portion (P2) and a recessed portion (Q2) are formed in succession on a second side in the horizontal direction opposite to the first side, such that the recessed portion (Q2) of the second side is formed on the opposite side of the protruding portion (P1) of the first side, and the protruding portion (P2) of the second side is formed on the opposite side of the recessed portion (Q1) of the first side.

[0165] And, as in the example of Fig. 15(b), when two main bodies (10A, 10B) are arranged adjacent to each other, the protruding part of the second main body is accommodated in the recessed part of the first main body, and the protruding part of the first main body is accommodated in the recessed part of the second main body. And, a part of the first annular core is positioned inside the protruding part (P1) of the first side, and a part of the second annular core is positioned inside the protruding part (P2) of the second side.

[0166] According to the split type measuring device of the present invention, protruding and recessed portions are formed on the horizontal side, and each protruding portion is configured to align with the recessed portion on the opposite side, so that a plurality of split type measuring devices can be easily applied in situations such as when applying to a 3-phase 4-wire system or when split type measuring devices must be arranged in succession.

[0167]

[0168] FIG. 16 is a schematic diagram showing a state in which a temperature measurement module is mounted on a main body of a split-type measuring device according to one embodiment of the present invention. FIG. 16(a) and FIG. 16(b) show different examples of mounting on a three-phase, three-wire power line, and FIG. 16(c) shows an example of mounting on two pairs of single-phase power lines.

[0169] A first temperature measurement module (300) can be mounted (coupled) on the first side of the main body (10), and a second temperature measurement module (400) can be mounted (coupled) on the second side.

[0170] As shown in Fig. 16(a), the temperature can be sensed using the temperature sensor (411) of the temperature measuring module (400) separately mounted on the second side for power line 4C among the three-phase power lines that do not penetrate the main body (10), or as shown in Fig. 16(b), the temperature can be sensed using the temperature sensor (311) of the temperature measuring module (300) separately mounted on the first side for power line 4A among the three-phase power lines that do not penetrate the main body (10).

[0171] As shown in Fig. 16(c), among the two pairs of single-phase power lines, the temperature of the power line 5A, which is one of the two external power lines that do not penetrate the main body (10), is sensed using the temperature sensor (311) of the temperature measurement module (300) mounted on the first side, and the temperature of the power line 5D is sensed using the temperature sensor (411) of the temperature measurement module (400) mounted on the second side.

[0172] According to a split-type measuring device according to one embodiment of the present invention, since a user can configure a temperature measuring module in a detachable manner, the temperature can be sensed even for adjacent power lines that do not pass through the main body, and in an application such as that in FIG. 15(b), the temperature measuring module can be removed and applied as the same main body even in an application where the main bodies are arranged in a row.

Claims

1. A first annular core comprising a first upper core and a first lower core, which forms a magnetic closed circuit around a first power line; and a second annular core comprising a second upper core and a second lower core, which forms a magnetic closed circuit around a second power line. The coupling and separation between the upper module including the upper housing accommodating the first upper core and the second upper core and the lower module including the lower housing accommodating the first lower core and the second lower core is possible, In a split type measuring device that measures the current of the first power line using the first annular core and measures the current of the second power line using the second annular core, The first annular core and the second annular core are characterized in that they are arranged to be spaced apart from each other in the extension direction in which the first power line and the second power line extend. Split type measuring device.

2. A first annular core comprising a first upper core and a first lower core, which forms a magnetic closed circuit around a first power line; and a second annular core comprising a second upper core and a second lower core, which forms a magnetic closed circuit around a second power line. The coupling and separation between the upper module including the upper housing accommodating the first upper core and the second upper core and the lower module including the lower housing accommodating the first lower core and the second lower core is possible, In a split type measuring device that measures the current of the first power line using the first annular core and measures the current of the second power line using the second annular core, A pair of first contact areas where the first upper core and the first lower core contact each other and a pair of second contact areas where the second upper core and the second lower core contact each other are characterized in that they are arranged to be spaced apart from each other in the extension direction in which the first power line and the second power line extend. Split type measuring device.

3. In claim 2, The above pair of first contact areas and the above pair of second contact areas are rectangular areas, and the width in the horizontal direction perpendicular to the extension direction is greater than 0.5 times the width in the extension direction and less than twice the width in the extension direction. Split type measuring device.

4. In claim 3, The width in the above horizontal direction is the same as the width in the above extension direction, Split type measuring device.

5. In claim 2, The distance (L) between the pair of first contact areas and the pair of second contact areas in the extension direction is greater than or equal to 20 mm. Split type measuring device.

6. In claim 1 or claim 2, The main body in which the upper module and the lower module are combined is With protrusions on both sides as seen from above or Characterized by its shape, Split type measuring device.

7. In claim 1 or claim 2, In the main body where the upper module and the lower module are combined, On the first side, protruding portions and recessed portions are formed in succession, and on the second side opposite to the first side, protruding portions and recessed portions are formed in succession. A recessed portion of the second side is formed on the opposite side of the protruding portion of the first side, and a protruding portion of the second side is formed on the opposite side of the recessed portion of the first side. Split type measuring device.

8. In claim 7, When the two above bodies are placed adjacent to each other, The protruding part of the second body is received in the sunken part of the first body, and the protruding part of the first body is received in the sunken part of the second body. Split type measuring device.

9. In claim 8, Regarding 3-phase 4-wire power lines, The first main body performs current measurement for two of the four power lines, and the second main body performs current measurement for the remaining two of the four power lines. Split type measuring device.

10. In claim 7, A portion of the first annular core is located inside the protruding portion of the first side, A part of the second annular core is located inside the protruding portion of the second side, Split type measuring device.

11. In claim 1 or claim 2, By performing current measurement for two adjacent power lines in two pairs of single-phase power lines using the first annular core and the second annular core respectively, current measurement for the two single-phase power lines is performed simultaneously. Split type measuring device.

12. In claim 1 or claim 2, In a three-phase, three-wire power line, current measurement is performed for two adjacent power lines using the first annular core and the second annular core, thereby performing current measurement for a three-phase, three-wire power line. Split type measuring device.

13. In claim 2, On the upper part of the above lower housing, A first cylindrical wall formed in a square shape and surrounding the first-first contact area closer to the side among the pair of first contact areas; and A second cylindrical wall is formed in a square shape and surrounds the second-first contact area closer to the side among the pair of second contact areas; Split type measuring device.

14. In claim 2, On the upper part of the above lower housing, A third cylindrical wall is formed in a rectangular shape and surrounds the 1-2 contact area, which is the central contact area among the pair of first contact areas, and the 2-2 contact area, which is the central contact area among the pair of second contact areas. Split type measuring device.

15. In claim 14, The lower part of the upper housing is provided with an insertion part that is inserted into the third cylindrical wall and aligned with the lower part, and is installed downward. A key piece is formed inside the third cylindrical wall body at a right angle to the third cylindrical wall body, and the key piece is inserted into the key groove of the insertion part to help alignment between the upper module and the lower module. Split type measuring device.

16. In claim 1 or claim 2, The combined upper housing and the lower housing are formed with a first line through-hole through which the first power line passes, and a second line through-hole through which the second power line passes. The above upper module, A first temperature sensor housed in the upper housing and positioned above the first line penetration hole to sense the temperature of the first power line; A second temperature sensor, which is housed in the upper housing and is positioned above the second line through hole to sense the temperature of the second power line; Split type measuring device.

17. In claim 1 or claim 2, A first temperature measurement module that can be detachably coupled to the upper module on the first side of the upper module and senses the temperature of an adjacent power line that does not penetrate; and A second temperature measurement module, which can be detachably coupled to the upper module on a second side opposite to the first side of the upper module and senses the temperature of an adjacent power line that does not penetrate therethrough; Split type measuring device.

18. In claim 17, Each of the first temperature measurement module and the second temperature measurement module, A module connection pin that can be connected to the main body connection pin of the upper module; A temperature sensor that can move its position by sliding horizontally and senses the temperature of the power line facing downward; An FPCB interposed between the temperature sensor and the module connection pin to form a path for an electric signal; Split type measuring device.

19. In claim 18, A sliding module having the temperature sensor mounted thereon and having a window or lens on the lower surface to allow passage of sensing light; and A guide case that guides the sliding of the above sliding module; Split type measuring device.

20. In claim 19, The above guide case is provided with a flange extending vertically around the module connection pin, and the upper housing is provided with a trench aligned with the flange around the main body connection pin. The first temperature measurement module or the second temperature measurement module can be mounted by sliding the flange from bottom to top into the trench. Split type measuring device.

21. In claim 19, Micro-grooves formed on the upper surface of the sliding module and formed in multiple numbers in the horizontal direction; and A cantilever configured on the upper part of the guide case and extending in the transverse direction, and having a protrusion formed on the lower part of the tip to be seated in one of the micro-grooves; Split type measuring device.

22. In claim 21, On the upper surface of the above sliding module, a plurality of characters indicating the specifications of the MCCB are printed or engraved next to the plurality of micro-homes, A confirmation window is formed on the upper part of the above guide case, in which one of the plurality of characters is exposed. Split type measuring device.

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