Electrical equipment voltage detection training device and voltage detection training method

Abstract

To provide a voltage detection training device that enables appropriate training in the correct method of voltage detection for electrical equipment and provides highly effective training.SOLUTION: A voltage detection training device includes a power supply circuit portion 1 and a voltage test portion 2, which uses an output terminal T of the power supply circuit portion 1 as a voltage detector measurement terminal. The power supply circuit portion 1 can selectively switch the output from the output terminal T to two or more different output modes, including a power outage mode, by switching the circuit with switch means S. Trainees can practice voltage detection work in different output modes. Furthermore, because the output terminal T can be set to any output mode, trainees can practice voltage detection without being informed of the output mode of the output terminal T, thereby conducting training that is in line with actual voltage detection. Moreover, by comparing the voltage detection results with the output mode, the appropriateness of the voltage detection can be immediately determined, and even when a false detection occurs, the cause can be easily identified.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a voltage detection training device for training voltage detection work performed during construction and maintenance inspection of electrical equipment, and a voltage detection training method using this device. [Background technology]

[0002] Generally, when carrying out construction or maintenance inspection work on electrical equipment, voltage testing is carried out in advance to check for charging or power outages in the circuit in order to prevent electric shock accidents. In this voltage testing, the detector of a voltage detector is brought into contact with the circuit of the equipment in question (such as a power panel), and whether or not the voltage detector reacts is used to determine whether there is charging or a power outage. However, if the voltage detector is used incorrectly during this voltage testing work, it may not be able to detect charging in the circuit, and may mistakenly be mistaken for a power outage, resulting in an electric shock accident.

[0003] Voltage detectors vary in how they are used and how easy they are to use depending on the manufacturer and model, or even between new and old models of the same model, which can lead to incorrect use of the voltage detector. For example, voltage detectors differ in how the detection part touches the electrical circuit, and if this is done incorrectly, they may not react (sound) even when charging. In addition, the way the detector sounds and lights up when charging also differs depending on the voltage detector, which can lead to false detection. Furthermore, if the area to be tested is located in a difficult position to test, such as low on a panel, this can also lead to incorrect use of the voltage detector. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-136535 Summary of the Invention [Problem to be solved by the invention]

[0005] To prevent false detections due to misuse of the voltage detector, workers need to learn the proper voltage detection method, and practical training in voltage detection work is considered necessary for this purpose. However, until now, no training methods or equipment that can achieve high training effectiveness have been known. Patent Document 1 shows a training device for electrical work, but it is basically just a device in which the electric power equipment to be tested and a voltage output device are installed inside a housing, and even if practical training in voltage testing is conducted using this device, it is not possible to expect a high level of training effect.

[0006] Therefore, the object of the present invention is to provide a voltage detection training device and a voltage detection training method that solve the problems of the conventional technology described above, enable proper training in the correct way to detect voltage in electrical equipment, and provide high training effectiveness. [Means for solving the problem]

[0007] The gist of the present invention for solving the above problems is as follows. [1] A power supply circuit unit (1) that receives power from an external power source and can selectively switch the output from an output terminal (T) to two or more different output modes, including a power outage mode, by switching the circuit with a switch means (S); a voltage test section (2) in which the output terminal (T) of the power supply circuit section (1) (including the case where the output terminal is a terminal block connected to the output terminal (T) via an electric wire) is used as a voltage test terminal, This is an electrical equipment voltage detection training device that can be attached to any metal support that simulates a panel case.

[0008] [2] A power supply circuit unit (1) that receives power from an external power source and can selectively switch the output from an output terminal (T) to two or more different output modes, including a power outage mode, by switching the circuit with a switch means (S); a voltage test part (2) using the output terminal (T) of the power supply circuit part (1) (including the case where the output terminal of a terminal block connected to the output terminal (T) via an electric wire) as a voltage test terminal; A training device for detecting voltage in electrical equipment, comprising a housing (3) in which a power supply circuit section (1) and a voltage test section (2) are provided.

[0009] [3] In the voltage detection training device of [1] or [2] above, the power outage mode is a power outage mode in which the output terminal (T) is not connected to any electric circuit, or a power outage mode in which the output terminal (T) is grounded. [4] In the voltage detection training device of any one of the above [1] to [3], the power supply circuit unit (1) can selectively switch the output from the output terminal (T) between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode.

[0010] [5] A power supply circuit unit (1) that receives power from an external power source and can selectively switch the output from the output terminal (T) between three or more different output modes, including a first power failure mode in which the output terminal (T) is not connected to any electrical circuit and is in a disconnected state by switching the circuit with a switch means (S), and a second power failure mode in which the output terminal (T) is in a grounded state; a voltage test section (2) in which the output terminal (T) of the power supply circuit section (1) (including the case where the output terminal is a terminal block connected to the output terminal (T) via an electric wire) is used as a voltage test terminal, This is an electrical equipment voltage detection training device that can be attached to any metal support that simulates a panel case.

[0011] [6] A power supply circuit unit (1) that receives power from an external power source and can selectively switch the output from the output terminal (T) between three or more different output modes, including a first power failure mode in which the output terminal (T) is not connected to any electrical circuit and is in a disconnected state, and a second power failure mode in which the output terminal (T) is in a grounded state, by switching the circuit with a switch means (S); a voltage test part (2) using the output terminal (T) of the power supply circuit part (1) (including the case where the output terminal of a terminal block connected to the output terminal (T) via an electric wire) as a voltage test terminal; A training device for detecting voltage in electrical equipment, comprising a housing (3) in which a power supply circuit section (1) and a voltage test section (2) are provided.

[0012] [7] In the voltage detection training device of the above [5] or [6], the power supply circuit unit (1) can selectively switch the output from the output terminal (T) between at least one AC voltage output mode, at least one DC voltage output mode, the first power failure mode, and the second power failure mode. [8] In the voltage detection training device of any one of [1] to [7] above, the power supply circuit section (1) has a plurality of output terminals (T), and the output mode of each output terminal (T) can be selectively switched. [9] In any one of the voltage detection training devices [1] to [8] above, the power supply circuit unit (1) has a power receiving terminal (To) for three-phase three-wire AC 200V, The voltage detection training device for electrical equipment further comprises a test phase / voltage measuring section (4) that uses the power receiving terminal (To) as a measurement terminal.

[0013]

[10] In the voltage detection training device of the above [1] or [2], the power supply circuit part (1) is an AC 100V AC line (6 AC ) and DC24V DC line (6 DC ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, A voltage detection training device for electrical equipment, characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (1-i) to (1-iii): (1-i) Output terminal (T) is AC 100V AC line (6 AC ) and AC100V output mode (1-ii) Output terminal (T) is DC 24V line (6 DC ) and DC24V output mode (1-iii) The output terminal (T) is connected to the AC line (6 AC ) and DC line (6 DC) and is not connected to any electrical circuit.

[0014]

[11] In the voltage detection training device of the above [1] or [2], the power supply circuit part (1) is an AC 100V AC line (6 AC ), DC24V DC line (6 DC ) and ground connection line (6 E ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, The voltage detection training device for electric equipment is characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (2-i) to (2-iii). (2-i) Output terminal (T) is AC100V AC line (6 AC ) and AC100V output mode (2-ii) Output terminal (T) is DC 24V line (6 DC ) and DC24V output mode (2-iii) The output terminal (T) is connected to the ground connection line (6 E ) and becomes grounded in power outage mode

[0015]

[12] In the voltage detection training device of the above [5] or [6], the power supply circuit part (1) is connected to an AC 100V AC line (6 AC ), DC24V DC line (6 DC ) and ground connection line (6 E ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, A voltage detection training device for electrical equipment, characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (3-i) to (3-iv): (3-i) Output terminal (T) is AC 100V AC line (6 AC ) and AC100V output mode (3-ii) Output terminal (T) is DC 24V line (6 DC ) and DC24V output mode (3-iii) The output terminal (T) is connected to the AC line (6AC ), DC line (6 DC ) and ground connection line (6 E ) and is not connected to any electrical circuits. (3-iv) The output terminal (T) is connected to the ground connection line (6 E ) and becomes grounded.

[0016]

[13] A voltage detection training method using any one of the voltage detection training devices [1], [2], [5] or [6] above, Set the output terminal (T) of the power supply circuit section (1) to any output mode, A method for training in voltage detection of electrical equipment, characterized in that a trainee uses a voltage detector to perform voltage detection on a test part (2) without being informed of the output mode of an output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode.

[14] In the voltage detection training method of

[13] above, the output mode of the output terminal (T) of the power supply circuit unit (1) can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode; A voltage detection training method for electrical equipment, characterized in that the output terminal (T) is set to any output mode selected from among these.

[0017]

[15] In the voltage detection training method of

[13] above, the output mode of the output terminal (T) of the power supply circuit unit (1) can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, the first power failure mode, and the second power failure mode; A voltage detection training method for electrical equipment, characterized in that the output terminal (T) is set to any output mode selected from among these.

[16] A voltage detection training method for electrical equipment according to any one of the voltage detection training methods

[13] to

[15] above, characterized in that the power supply circuit section (1) has a plurality of output terminals (T), and the output modes of the plurality of output terminals (T) are set to any output mode.

[17] In any one of the above

[13] to

[16] , a voltage detection training method using a voltage detection training device in which the power supply circuit unit (1) has a power receiving terminal (To) for three-phase three-wire AC 200V, and further includes a test phase / voltage measurement unit (4) that uses the power receiving terminal (To) as a measurement terminal, The method for training in voltage detection of electrical equipment is characterized in that the trainee in voltage detection further performs phase detection and / or line voltage measurement in the test phase / voltage measurement unit (4) using a phase detector and / or a voltmeter.

[0018]

[18] A voltage detection training method using the voltage detection training device of

[10] above, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (1-i) to (1-iii), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage detection target part (2) using a voltage detector without being informed of the output mode of the output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode, and further performs the following confirmation work (c) as necessary. (a) AC voltage is detected for all of the multiple output terminals (T) that are the subject of voltage detection. (b) For the output terminal (T) where the voltage detector did not sound during the voltage detection in (a) above, the trainee will perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands. (c) In the voltage detection of (a) and / or (b) above, if the voltage detector beeps at any of the output terminals (T) set to the output mode of (1-iii) above, measure the voltage of that output terminal (T) using a circuit meter to confirm that it is in a power outage state.

[0019]

[19] A voltage detection training method using the voltage detection training device of

[11] above, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (2-i) to (2-iii), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage test target part (2) using a voltage tester without being informed of the output mode of the output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode. (a) AC voltage is detected for all of the multiple output terminals (T) that are the subject of voltage detection. (b) For the output terminal (T) where the voltage detector did not sound during the voltage detection in (a) above, the trainee will perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands.

[0020]

[20] A voltage detection training method using the voltage detection training device of

[12] above, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (3-i) to (3-iv), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage detection target part (2) using a voltage detector without being informed of the output mode of the output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode, and further performs the following confirmation work (c) as necessary. (a) AC voltage is detected for all of the multiple output terminals (T) that are the subject of voltage detection. (b) For the output terminal (T) where the voltage detector did not sound during the voltage detection in (a) above, the trainee will perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands. (c) In the voltage detection of (a) or / and (b) above, if the voltage detector beeps during voltage detection for any of the output terminals (T) set to the output mode of (3-iii) above, measure the voltage of that output terminal (T) using a circuit meter to confirm that it is in a power outage state due to the first power outage mode. [Effects of the Invention]

[0021] One form of the voltage detection training device of the present invention is provided with a voltage detection unit 2 in which the output terminal T of a power supply circuit unit 1 is used as a voltage detector measurement terminal, and by switching the circuit of the power supply circuit unit 1 with a switch means S, the output from the output terminal T can be selectively switched between two or more different output modes, including a power outage mode, making it possible to train in voltage detection in different output modes and to conduct effective training assuming a variety of equipment and situations. Furthermore, because the output terminal T can be set to any output mode, the trainee can train in voltage detection without being informed of the output mode of the output terminal T, thereby conducting training that conforms to actual voltage detection, and by comparing the voltage detection results with the output mode, the appropriateness of voltage detection can be immediately determined, and even if a false detection occurs, the cause can be easily confirmed. Furthermore, in this voltage detection training device, (a) the output from the output terminal T of the power supply circuit section 1 can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode; (b) the power supply circuit section 1 has multiple output terminals T, and the output mode of each output terminal T can be selectively switched; and (c) the power supply circuit section 1 has a power receiving terminal To for three-phase three-wire AC 200V, and is equipped with a test phase / voltage measurement section 4 that uses the power receiving terminal To as a measurement terminal, thereby making it possible to conduct more effective training.

[0022] Furthermore, another form of the voltage detection training device of the present invention not only achieves the same effects as those described above, but also allows the output from the output terminal T to be selectively switched between three or more different output modes, including a first power failure mode in which the output terminal T is in an unconnected state and not connected to any electric circuit, and a second power failure mode in which the output terminal T is in a grounded state, thereby enabling training that is more in line with actual voltage detection. That is, while the second power failure mode is an output mode in which a complete power failure occurs (complete 0 V mode), the first power failure mode is an unconnected state (neutral state) in which the output terminal T is not connected to any electric circuit, but under certain conditions a voltage (electrostatic noise) may be generated, causing the voltage detector to ring; and since such a phenomenon may also occur in actual voltage detection sites, this voltage detection training device allows training that is more in line with actual voltage detection. Furthermore, in this voltage detection training device, (a) the output from the output terminal T of the power supply circuit section 1 can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, a first power failure mode, and a second power failure mode, (b) the power supply circuit section 1 has a plurality of output terminals T, and the output mode of each output terminal T can be selectively switched, and (c) the power supply circuit section 1 has a power receiving terminal To for three-phase three-wire AC 200V, and is equipped with a test phase / voltage measurement section 4 that uses the power receiving terminal To as a measurement terminal, thereby making it possible to conduct more effective training. Therefore, the voltage detection training device of the present invention and the voltage detection training method of the present invention using the same enable proper training in the correct way to test voltage on electrical equipment, thereby achieving a high level of training effectiveness. [Brief explanation of the drawings]

[0023] [Figure 1] 1 shows an embodiment of a voltage detection training device of the first embodiment of the present invention, in which FIG. 1A is a front view and FIG. 1B is a side view of a power supply circuit portion. [Figure 2] Circuit diagram of the voltage detection training device shown in Figure 1 [Figure 3] FIG. 3 is an explanatory diagram showing a schematic configuration of a switch means in the circuit configuration diagram of FIG. 2; [Figure 4]A perspective view showing the state in which the voltage detection training device shown in Figure 1 is attached to a support body (a used panel case) that simulates a panel case. [Figure 5] A photograph showing the voltage detection training device shown in Figure 1 actually attached to a support body (a used panel case) that simulates a panel case. [Figure 6] FIG. 1 is a circuit diagram showing another embodiment of the voltage detection training device of the first embodiment of the present invention. [Figure 7] FIG. 1 is a circuit diagram showing another embodiment of the voltage detection training device of the first embodiment of the present invention. [Figure 8] FIG. 1 is a circuit diagram showing another embodiment of the voltage detection training device of the first embodiment of the present invention. [Figure 9] FIG. 9 is an explanatory diagram showing a schematic configuration of a switch means in the circuit configuration diagram of FIG. 8; [Figure 10] FIG. 1 is a perspective view schematically illustrating an embodiment of a voltage detection training device according to a second embodiment of the present invention. [Figure 11] FIG. 10 is a circuit diagram showing an embodiment of a voltage detection training device according to a third embodiment of the present invention. [Figure 12] FIG. 12 is an explanatory diagram showing a schematic configuration of the switch means in the circuit configuration diagram of FIG. 11; DETAILED DESCRIPTION OF THE INVENTION

[0024] The voltage detection training device of the first embodiment of the present invention does not have a housing equivalent to a panel housing, but is used by being attached to any support that simulates a panel housing. This voltage detection training device is equipped with a power supply circuit section 1 that receives power from an external power source and can selectively switch the output from output terminal T to two or more different output modes, including a power outage mode, by switching the circuit with switch means S, and a voltage test section 2 that uses output terminal T of this power supply circuit section 1 (including the output terminal of a terminal block connected to output terminal T via an electric wire) as a voltage test terminal, and is attached to any metal (generally steel) support that simulates a panel case. Here, the output terminal T, which serves as the terminal for voltage detector measurement, includes not only the output terminal of the power supply circuit unit 1 itself, but also, as described above, the output terminal of the terminal block connected to the output terminal of the power supply circuit unit 1 itself via an electric wire.

[0025] The output mode of the output terminal T that can be selectively switched may be two or more different output modes including the power outage mode, and therefore, other than the power outage mode, it does not matter whether it is an AC voltage mode or a DC voltage mode, and the magnitude of the voltage does not matter. However, in order to conduct efficient and highly effective voltage detection training, it is preferable that the output mode of the output terminal T be selectively switchable between at least one AC voltage output mode, at least one DC voltage output mode, and the power outage mode, and particularly, it is more preferable that the output mode of the output terminal T be selectively switchable between an AC 100 V output mode, a DC 24 V output mode, and the power outage mode, as in the specific embodiment described below.

[0026] In the present invention, the power outage mode can be either (a) a power outage mode in which the output terminal T is in an unconnected state and not connected to any electrical circuit, or (b) a power outage mode in which the output terminal T is in a grounded state. Here, the power outage mode (B) above is an output mode that results in a complete power outage (complete 0V output mode), whereas the power outage mode (A) above may generate a voltage that is considered to be electrostatic noise (electrostatic induction noise) and cause the electroscope to ring, even though the output terminal T is not connected to any electrical circuit (neutral state). To avoid this, it is preferable to take measures to suppress electrostatic noise, such as (1) separating the conductors leading to each output terminal T as much as possible, or (2) shielding the conductors leading to each output terminal T. On the other hand, even if the electroscope rings due to electrostatic noise, it is possible to confirm that the power outage mode is in effect by measuring the voltage using a circuit meter, as described below, so it is not necessary to configure the device without taking any special measures. The voltage of the electrostatic noise generated in the power outage mode (A) is usually around 50V.

[0027] Furthermore, in order to enable the trainee to successively perform voltage detection on output terminals T (voltage detector measurement terminals) of different output modes in a single voltage detection training session, it is preferable that the power supply circuit section 1 has a plurality of output terminals T (output terminals T that serve as voltage detector measurement terminals) and that the output mode of each output terminal T can be selectively switched as described above. The switch means S is preferably a toggle switch in terms of functionality and operability, but is not limited to this. Alternatively, a microcomputer may be introduced to electronically operate the switch by pressing a button, or the switch operation may be made switchable between automatic and manual. There are no particular restrictions on the type or structure of the metal (usually steel) support on which the equipment is mounted, as long as it allows for safe training, but because it is a simulation of a panel case, it is necessary to carry out Class D grounding work according to the incoming voltage in accordance with the Electrical Equipment Technical Standards. Grounding work may also be carried out to stabilize the 0V of the DC power supply. As the support, for example, in addition to a used panel case as in the embodiment described below, a steel bookshelf, locker, desk, etc. can also be used.

[0028] Figures 1 to 4 show one embodiment of the voltage detection training device of the first aspect of the present invention. Figure 1 shows the voltage detection training device before it is attached to a support, with Figure (A) being a front view of the entire device and Figure (B) being a side view of the power supply circuit section 1 that constitutes the device. Figure 2 is a circuit diagram of the voltage detection training device, and Figure 3 is an explanatory diagram that schematically shows the configuration of the switch means in the circuit diagram of Figure 2. Figure 4 is a perspective view that schematically shows the voltage detection training device attached to a support x (a used panel case) that simulates a panel case. Also, Figure 5 is a photograph showing the voltage detection training device actually attached to a support x (a used panel case) that simulates a panel case. The voltage detection training device of this embodiment uses single-phase 200V AC as an input power source, transforms and converts the received AC 200V to AC 100V and DC 24V, and allows the output mode of the output terminal T (voltage detector measurement terminal) of the power supply circuit unit 1 to be selectively switched between "AC 100V output mode," "DC 24V output mode," and "power failure mode." In this embodiment, the power failure mode is defined as "a power failure mode in which the output terminal T is not connected to any electrical circuit and is in an unconnected state." Therefore, this power failure mode can be said to be a 0V output mode except when electrostatic noise is generated.

[0029] The power supply circuit unit 1 includes a power receiving terminal To for single-phase AC 200V, a transformer 7 for transforming the received AC 200V to AC 100V, and an AC line 6 through which the AC current of AC 100V after the transformation flows and which is connected to an output terminal T (a terminal for measuring a voltage detector) via a switch means S. AC (electrical circuit), a DC power supply device 5 that converts the transformed AC 100V to DC 24V, and a DC line 6 through which the converted DC 24V DC current flows and which is connected to an output terminal T (voltage detector measurement terminal) via a switch means S. DC (electrical circuit). The power supply circuit section 1 has an output terminal T (terminal for voltage detector measurement) and a switch means S, but as mentioned above, in order to enable the trainee to continuously detect voltages at output terminals T of different output modes in one training session, the power supply circuit section 1 has a plurality (ten in this embodiment) of output terminals T1 to T10 (terminals for voltage detector measurement), and a corresponding plurality (ten in this embodiment) of switch means S1 to S10 for selectively switching each output terminal T to the above three output modes. The number of output terminals T (and corresponding switch means S) to be installed is arbitrary. The power receiving terminal To of the power supply circuit unit 1 is connected to an outlet plug (not shown), and this outlet plug receives power from an AC 200V outlet power supply.

[0030] Each of the switch means S1 to S10 is composed of a toggle switch with three positions of ON-OFF-ON. In each of the switch means S, a conductor 14 extending from an output terminal T is connected to a movable contact, and an AC line 6 AC (AC bus) 15 AC and DC line 6 DC Conductor 15 branched off from (DC bus) DC are connected to the fixed contacts. As a result, for each of the output terminals T1 to T10 (electrical paths leading to the output terminal T), the AC line 6 AC and DC line 6 DC When connected, both lines 6 AC ,6 DC Therefore, the output mode of each of the output terminals T1 to T10 can be selectively switched to the following (1-i) to (1-iii). (1-i) Output terminal T is AC 100V AC line 6 AC AC100V output mode when connected to (1-ii) Output terminal T is DC 24V DC line 6 DC DC24V output mode when connected to (1-iii) Output terminal T is AC line 6 AC and DC line 6 DC Power outage mode in which the device is not connected to any electrical circuits, including the power supply (0V output mode unless electrostatic noise occurs)

[0031] Many power supply panels (e.g., relay terminal boards, control panels) have a mixture of AC and DC output terminals, and in practical training that involves such power supply panels, it is extremely useful to be able to selectively switch the output mode of each output terminal T1 to T10 to the above (1-i) to (1-iii), and this is expected to produce a highly effective training effect. FIG. 3 shows a schematic configuration of one switch means, and in position a, the AC line 6 AC AC100V output mode connected to DC line 6 in position b DC DC24V output mode, position c, AC line 6AC and DC line 6 DC The power supply enters a power outage mode in which it is not connected to any electrical circuits, including the power supply. In the other drawings, 8 denotes a circuit breaker (circuit protector), 9 denotes an earth line, 10 denotes a base for the power supply circuit unit 1, and 11 denotes a mounting hole for mounting the base 10 to a support x.

[0032] Output terminal T, which is the terminal for voltage detection with a voltage detector of unit 2 under test, may be configured as the output terminal of power supply circuit unit 1 itself. However, in this embodiment, terminal block 13 is connected to the output terminal of power supply circuit unit 1 itself via electric wire 12 (extension cord), and output terminal T of terminal block 13 is configured as the terminal for voltage detection with a voltage detector. That is, the device is structured so that unit 2 under test is independent from power supply circuit unit 1 and can be installed at a location away from power supply circuit unit 1. As mentioned above, this is because even if the location to be detected is low on a panel or in a location where voltage detection is difficult (for example, a location where the operator must bend down to perform voltage detection), this can lead to incorrect voltage detection methods. Therefore, the purpose is to enable unit 2 under test to be installed at a location that simulates such a voltage detection location. However, the terminal for voltage detection with a voltage detector of unit 2 under test may be configured as the output terminal of power supply circuit unit 1 itself, so that power supply circuit unit 1 and unit 2 under test have an integrated structure. In the circuit configuration diagram of FIG. 2, for convenience, the output terminal T of the power supply circuit unit 1 itself is used as the voltage detector measurement terminal of the voltage test unit 2, but the configuration of this embodiment is as described above.

[0033] In this embodiment, the support x (support simulating a panel case) on which the voltage detection training device is attached is a used panel case, and to make it easier to operate the switch means S, the power supply circuit section 1 is attached to the upper part of the outer side of the used panel case, and the voltage detection section 2 connected to this power supply circuit section 1 by an electric wire 12 is attached to the lower part of the inside of the used panel case (a position simulating a voltage detection position where voltage detection is difficult). The photograph in Figure 5 shows the voltage detection training device actually attached to a used panel case in this manner. Note that the attachment position of the voltage detection training device (power supply circuit section 1 and voltage detection section 2) is not limited to this embodiment and can be selected arbitrarily. There is no particular limitation on the method of mounting the voltage detection training device to the support body x, and in this embodiment, the base 10 of the power supply circuit unit 1 is fixed to the support body x through the mounting holes 11 with screws or bolts, but it may also be fixed to the support body x by, for example, a magnet (such as a magnetic sheet) or other means. The same applies to the terminal block 13 (voltage test unit 2).

[0034] FIG. 6 is a circuit diagram showing another embodiment of the voltage detection training device according to the first embodiment of the present invention. The voltage detection training device of this embodiment uses single-phase 100V AC as an input power source, converts the received 100V AC to 24V DC, and allows the output mode of the output terminal T (voltage detector measurement terminal) of the power supply circuit unit 1 to be selectively switched between "100V AC output mode," "24V DC output mode," and "power failure mode." In this embodiment, the power failure mode is also the "power failure mode in which the output terminal T is in an unconnected state and not connected to any electrical circuit." Therefore, this power failure mode can be said to be a 0V output mode except when electrostatic noise is generated. The power supply circuit section 1 includes a power receiving terminal To for single-phase AC 100V, an AC line 6 through which the received AC 100V AC current flows and which is connected to an output terminal T (voltage detector measurement terminal) via a switch means S. AC a DC power supply device 5 that converts AC 100V to DC 24V; a DC line 6 through which the converted DC 24V flows and which is connected to an output terminal T (a terminal for measuring a voltage detector) via a switch means S; DC It has. The power receiving terminal To of the power supply circuit unit 1 is connected to an outlet plug (not shown), and this outlet plug receives power from an AC 100V outlet power supply. Other configurations are the same as those in the embodiment of FIG. 2, so the same reference numerals are used and detailed description will be omitted.

[0035] Each of the switch means S1 to S10, which is configured by a toggle switch (three positions of ON-OFF-ON), is connected to the AC line 6 for each of the output terminals T1 to T10 (electrical paths leading to the output terminal T). AC and DC line 6DC When connected, both lines 6 AC ,6 DC Therefore, the output mode of each of the output terminals T1 to T10 can be selectively switched to the following (1-i) to (1-iii). (1-i) Output terminal T is AC 100V AC line 6 AC AC100V output mode when connected to (1-ii) Output terminal T is DC 24V DC line 6 DC DC24V output mode when connected to (1-iii) Output terminal T is AC line 6 AC and DC line 6 DC Power outage mode in which the device is not connected to any electrical circuits, including the power supply (0V output mode unless electrostatic noise occurs)

[0036] 7 is a circuit diagram showing another embodiment of the voltage detection training device of the first embodiment of the present invention. In this embodiment, the power outage mode is also the "power outage mode in which the output terminal T is not connected to any electric circuit." Therefore, this power outage mode can also be said to be a 0V output mode except when electrostatic noise occurs. The voltage detection training device of this embodiment uses three-phase 200V AC as an input power source, and the power supply circuit unit 1 has a power receiving terminal To (terminals R, S, and T) for three-phase, three-wire 200V AC, and is equipped with a test phase / voltage measurement unit 4 that uses this power receiving terminal To as a measurement terminal. The power receiving terminal To of the power supply circuit unit 1 is connected to an outlet plug (not shown), and this outlet plug receives power from the 200V AC outlet power source. The other circuit configuration is the same as in the embodiment of Figure 2 (the same reference numerals as in Figure 2 are used and detailed description will be omitted), and the received 200V AC is transformed and converted to 100V AC and 24V DC, and the output mode of the output terminal T (voltage detector measurement terminal) of the power supply circuit unit 1 can be selectively switched between "100V AC output mode," "24V DC output mode," and "power outage mode." In the voltage detection training device of this embodiment, voltage detection training can be carried out using the voltage detection target section 2, and in addition, phase detection and line voltage measurement can be carried out using the phase detection target / voltage measurement section 4.

[0037] 8 and 9 show another embodiment of the voltage detection training device of the first form of the present invention, where FIG. 8 is a circuit diagram of the voltage detection training device, and FIG. 9 is an explanatory diagram showing the configuration of the switch means of the circuit diagram of FIG. In each of the above-described embodiments, the power failure mode is set to "a power failure mode in which the output terminal T is not connected to any electric circuit and is in an unconnected state," but in this embodiment, the power failure mode is set to "a power failure mode in which the output terminal T is in a grounded state." In this power failure mode, the output voltage becomes a completely 0V output mode. Like the embodiment of FIG. 6, the voltage detection training device of this embodiment also uses single-phase AC 100V as an input power source, converts the received AC 100V to DC 24V, and enables the output mode of the output terminal T (voltage detector measurement terminal) of the power supply circuit section 1 to be selectively switched to "AC 100V output mode," "DC 24V output mode," and "power outage mode."

[0038] As in the embodiment of FIG. 6, the power supply circuit unit 1 includes a power receiving terminal To for single-phase AC 100V, an AC line 6 through which the received AC 100V AC current flows and which is connected to an output terminal T (voltage detector measurement terminal) via a switch means S. AC a DC power supply device 5 that converts AC 100V to DC 24V; a DC line 6 through which the converted DC 24V flows and which is connected to an output terminal T (a terminal for measuring a voltage detector) via a switch means S; DC Furthermore, in this embodiment, a ground connection line 6 branched from the earth line 9 (earth line bus) is provided. E (Earth line branch line). Other configurations are the same as those in the embodiment shown in FIGS. 2 and 6, so the same reference numerals are used and detailed description will be omitted.

[0039] Each of the switch means S1 to S10 is composed of a toggle switch with three positions of ON-OFF-ON. In each of the switch means S, a conductor 14 extending from an output terminal T is connected to a movable contact, and an AC line 6 AC (AC bus) 15 AC and DC Line 6 DC Conductor 15 branched off from (DC bus) DC and ground connection line 6 E Conductor 15 branched from E are connected to the fixed contacts. As a result, for each of the output terminals T1 to T10 (electrical paths leading to the output terminal T), the AC line 6 AC and DC line 6 DC and ground connection line 6 E Therefore, the output modes of the output terminals T1 to T10 can be selectively switched to the following modes (2-i) to (2-iii). (2-i) Output terminal T is AC 100V AC line 6 AC AC100V output mode when connected to (2-ii) Output terminal T is DC 24V line 6 DC DC24V output mode when connected to (2-iii) Output terminal T is connected to ground line 6 E Power outage mode in which the power supply is connected to the ground

[0040] FIG. 9 shows a schematic configuration of one switch means, and in position a, the AC line 6 AC AC100V output mode connected to DC line 6 in position b DC DC24V output mode, position c, ground connection line 6 E and enters power outage mode, where the power supply is connected to the ground. The method of setting the power failure mode as "power failure mode in which the output terminal T is in a ground connection state" as described above can be applied to other embodiments. For example, in an embodiment in which a single-phase AC 200V is used as the input power source and the received AC 200V is transformed and converted to AC 100V and DC 24V before being output as shown in FIG. 2, or in an embodiment in which a three-phase AC 200V is used as the input power source and the power supply circuit unit 1 is provided with a test phase / voltage measurement unit 4 as shown in FIG. 7, the ground connection line 6 branched from the earth line 9 (earth line bus) can be used. E may be provided so that the output modes of the output terminals T1 to T10 can be selectively switched to the above (2-i) to (2-iii). As described above, when the power outage mode is "a power outage mode in which the output terminal T is not connected to any electrical circuit and is in an unconnected state" as in the embodiments of Figures 2 and 6, voltage (electrostatic noise) may be generated and the voltage detector may sound depending on the conditions, but when the power outage mode is "a power outage mode in which the output terminal T is in a grounded state" as in this embodiment, a complete power outage occurs, so no voltage (electrostatic noise) is generated and the voltage detector will not sound.

[0041] In the voltage detection training devices of the first and second embodiments of the present invention, the output mode of the output terminal T of the power supply circuit section 1 can be set as follows, in addition to the above-described embodiment. (1) It is possible to selectively switch between three modes: AC200V output mode, DC24V output mode, and power outage mode. (2) It is possible to selectively switch between two modes: one of AC200V output mode, AC100V output mode, and DC24V output mode, and power outage mode. In the cases of (1) and (2) above, the power supply circuit section 1 will have a circuit configuration different from that shown in Figures 2, 6, and 7, but this can be easily configured by appropriately increasing or decreasing the number of current-carrying lines, transformers, switch means, etc.

[0042] The voltage detection training device of the second embodiment of the present invention is provided with a housing that corresponds to a panel housing. This voltage detection training device comprises a power supply circuit section 1 that receives power from an external power source and can selectively switch the output from an output terminal T to two or more different output modes including a power outage mode by switching the circuit with a switch means S, a voltage test section 2 that uses the output terminal T of this power supply circuit section 1 (however, this includes the case where the output terminal of a terminal block connected to the output terminal T via an electric wire) as a voltage tester measurement terminal, and a housing 3 in which the power supply circuit section 1 and the voltage test section 2 are provided (attached).

[0043] Here, the output terminal T, which serves as the terminal for voltage detector measurement, includes not only the output terminal of the power supply circuit unit 1 itself, but also, as described above, the output terminal of the terminal block connected to the output terminal of the power supply circuit unit 1 itself via an electric wire. In the case of this second form of voltage detection training device, in order to enable the trainee to successively perform voltage detection on output terminals T (voltage detector measurement terminals) of different output modes in one training session, it is preferable that the power supply circuit unit 1 has a plurality of output terminals T (output terminals T that serve as voltage detector measurement terminals) and that the output mode of each output terminal T can be selectively switched. Other configurations are the same as those of the voltage detection training device of the first embodiment described above, so detailed explanations will be omitted. Furthermore, in accordance with the grounding work of the support body described in the voltage detection training device of the first embodiment, the necessary grounding work is also carried out for the housing 3.

[0044] 10 is a perspective view showing a schematic diagram of an embodiment of a voltage detection training device according to the second embodiment of the present invention, in which a power supply circuit unit 1 and a voltage test unit 2 are provided inside a housing 3. However, the method of providing the power supply circuit unit 1 and the voltage test unit 2 relative to the housing 3 is not limited to this embodiment and can be selected arbitrarily. Furthermore, the power supply circuit unit 1 may be provided on the outside of the housing 3, or the voltage test unit 2 may be provided with an integrated structure by configuring the voltage detector measurement terminal of the voltage test unit 2 with the output terminal of the power supply circuit unit 1 itself. The housing 3 of this embodiment is made of metal (generally steel), and is composed of a main body 30 that houses the power supply circuit unit 1 and the voltage test unit 2, and a door body 31 that can be opened and closed. The size of the housing 3 is arbitrary, and it may be a size that can be used on the floor or a tabletop size. The voltage detection training device of the second embodiment of the present invention can also have a circuit configuration such as that shown in Figures 2, 6, 7 and 8. The details are as described above.

[0045] The third and fourth forms of the voltage detection training device of the present invention, instead of the power outage mode of the voltage detection training device of the first and second forms of the present invention described above, are configured so that the output from the output terminal T can be switched between a first power outage mode in which the output terminal T is in an unconnected state and not connected to any electrical circuit, and a second power outage mode in which the output terminal T is in a grounded state, and the output from the output terminal T can be selectively switched between three or more different output modes including the first power outage mode and the second power outage mode. Of these, the third form of the voltage detection training device of the present invention, like the first form of the voltage detection training device of the present invention, does not have a housing equivalent to a panel housing, but is used by being attached to any support that simulates a panel housing.

[0046] This voltage detection training device receives power from an external power source and, by switching the circuit with switch means S, can selectively switch the output from output terminal T between three or more different output modes, including a first power failure mode in which output terminal T is in an unconnected state and not connected to any electrical circuit, and a second power failure mode in which output terminal T is in a grounded state, and is equipped with a voltage detection part 2 in which output terminal T of this power supply circuit part 1 (including the case where the output terminal of a terminal block connected to output terminal T via an electric wire) is used as a voltage detection terminal, and is attached to any metal (generally steel) support that simulates a panel housing. Here, the output terminal T, which serves as the terminal for voltage detector measurement, includes not only the output terminal of the power supply circuit unit 1 itself, but also, as described above, the output terminal of the terminal block connected to the output terminal of the power supply circuit unit 1 itself via an electric wire.

[0047] The output mode of the output terminal T that can be selectively switched may be three or more different output modes including the first power failure mode and the second power failure mode, and therefore, other than these power failure modes, it does not matter whether the output mode is an AC voltage mode or a DC voltage mode, and the magnitude of the voltage does not matter. However, in order to conduct efficient and highly effective voltage detection training, it is preferable that the output mode of the output terminal T be selectively switchable between at least one AC voltage output mode, at least one DC voltage output mode, the first power failure mode, and the second power failure mode, and it is more preferable that the output mode of the output terminal T be selectively switchable between an AC 100 V output mode, a DC 24 V output mode, the first power failure mode, and the second power failure mode, as in the specific embodiment described below. Here, the second power outage mode is an output mode that results in a complete power outage (complete 0V output mode), whereas the first power outage mode is an output mode in which the output terminal T is not connected to any electrical circuit (neutral state), but under certain conditions, a voltage (electrostatic noise) may be generated and the voltage detector may sound. Since such a phenomenon may occur in actual voltage detection sites, this voltage detection training device allows for training that is more in line with actual voltage detection. The voltage of the electrostatic noise generated in the first power outage mode is usually around 50V.

[0048] Furthermore, in order to enable the trainee to successively perform voltage detection on output terminals T (voltage detector measurement terminals) of different output modes in a single voltage detection training session, it is preferable that the power supply circuit section 1 has a plurality of output terminals T (output terminals T that serve as voltage detector measurement terminals) and that the output mode of each output terminal T can be selectively switched as described above. The switch means S is preferably a four-position (ON-ON-ON-OFF) selector switch in terms of functionality and operability, but is not limited to this. Alternatively, a microcomputer may be introduced to electronically operate the switch by pressing a button, or the switch operation may be made switchable between automatic and manual. There are no particular restrictions on the type or structure of the metal (usually steel) support on which the equipment is mounted, as long as it allows for safe training, but because it is a simulation of a panel case, it is necessary to carry out Class D grounding work according to the incoming voltage in accordance with the Electrical Equipment Technical Standards. Grounding work may also be carried out to stabilize the 0V of the DC power supply. As the support, for example, in addition to a used panel case as in the embodiment described below, a steel bookshelf, locker, desk, etc. can also be used.

[0049] 11 and 12 show one embodiment of the voltage detection training device of the third form of the present invention, where FIG. 11 is a circuit diagram of the voltage detection training device, and FIG. 12 is an explanatory diagram showing the configuration of the switch means of the circuit diagram of FIG. 11. Like the embodiment of Figure 6, the voltage detection training device of this embodiment also uses single-phase AC 100V as an input power source, converts the received AC 100V to DC 24V, and enables the output mode of the output terminal T (voltage detector measurement terminal) of the power supply circuit section 1 to be selectively switched between "AC 100V output mode," "DC 24V output mode," "first power outage mode," and "second power outage mode." As in the embodiment of FIG. 6, the power supply circuit unit 1 includes a power receiving terminal To for single-phase AC 100V, an AC line 6 through which the received AC 100V AC current flows and which is connected to an output terminal T (voltage detector measurement terminal) via a switch means S. AC a DC power supply device 5 that converts AC 100V to DC 24V; a DC line 6 through which the converted DC 24V flows and which is connected to an output terminal T (a terminal for measuring a voltage detector) via a switch means S; DC Furthermore, in this embodiment, a ground connection line 6 branched from the earth line 9 (earth line bus) is provided. E (Earth line branch line). Other configurations are the same as those in the embodiments of FIGS. 2, 6 and 8, so the same reference numerals are used and detailed description will be omitted.

[0050] Each of the switch means S1 to S10 is composed of a four-position (ON-ON-ON-OFF) select switch, and in each switch means S, a conductor 14 led from an output terminal T is connected to a movable contact, and an AC line 6 AC (AC bus) 15 AC and DC Line 6 DC Conductor 15 branched off from (DC bus) DC and ground connection line 6 E Conductor 15 branched from E are connected to the fixed contacts. As a result, for each of the output terminals T1 to T10 (electrical paths leading to the output terminal T), the AC line 6 AC and DC line 6 DC connected to any electrical circuit, unconnected to any electrical circuit, ground connection line 6 E Therefore, the output modes of the output terminals T1 to T10 can be selectively switched to the following modes (3-i) to (3-iv). (3-i) Output terminal T is AC 100V AC line 6 AC AC100V output mode when connected to (3-ii) Output terminal T is DC 24V DC line 6 DC DC24V output mode when connected to (3-iii) Output terminal T is AC line 6 AC , DC line 6 DC and ground connection line 6 E First power outage mode: The power supply is not connected to any electrical circuits, including the (3-iv) Output terminal T is connected to ground line 6 E Second power outage mode: Connects to the ground and becomes grounded.

[0051] FIG. 12 shows a schematic configuration of one switch means, and in position a, the AC line 6 AC AC100V output mode connected to DC line 6 in position b DC In the 24V DC output mode, the power is connected to the 24V DC line. In the first power outage mode, the power is not connected to any circuit at position c1. In the second power outage mode, the power is not connected to any circuit at position c2.E and enters the second power outage mode, in which the power supply is connected to the ground. As mentioned above, in the first power outage mode in which the output terminal T is not connected to any electrical circuit, a voltage (electrostatic noise) may be generated under certain conditions, causing the voltage detector to sound. For example, if another output terminal T is connected to an AC 100V AC line 6, AC When the output terminal T is connected to the ground line 6, a voltage (electrostatic noise) may be generated in the first power failure mode, causing the voltage detector to sound. E The second power outage mode, in which the power supply is connected to the ground and the power is grounded, is a complete power outage mode, so no voltage (electrostatic noise) is generated and the voltage detector does not beep.

[0052] The above-described method of setting the power failure modes as "the first power failure mode in which the output terminal T is in a disconnected state and not connected to any electric circuit" and "the second power failure mode in which the output terminal T is in a grounded state" can be applied to other embodiments. For example, in an embodiment in which a single-phase AC 200V is used as the input power source as shown in FIG. 2 and the received AC 200V is transformed and converted to AC 100V and DC 24V for output, or in an embodiment in which a three-phase AC 200V is used as the input power source as shown in FIG. 7 and the power supply circuit unit 1 is provided with a test phase / voltage measurement unit 4, the ground connection line 6 branched from the earth line 9 (earth line bus) can be used. E may be provided so that the output modes of the output terminals T1 to T10 can be selectively switched to the above (3-i) to (3-iv).

[0053] In the voltage detection training devices of the third and fourth embodiments of the present invention, the output mode of the output terminal T of the power supply circuit section 1 can be set as follows, in addition to the above-described embodiments. (1) It is possible to selectively switch between four modes: AC200V output mode, DC24V output mode, first power outage mode, and second power outage mode. (2) It is possible to selectively switch between three modes: one of AC200V output mode, AC100V output mode, and DC24V output mode, and the first power outage mode and the second power outage mode. In the above cases (1) and (2), the power supply circuit unit 1 will have a circuit configuration different from that shown in FIG. 11, but this can be easily achieved by appropriately increasing or decreasing the number of current-carrying lines, transformers, switch means, etc.

[0054] The voltage detection training device of the fourth embodiment of the present invention is provided with a housing that corresponds to a panel housing. This voltage detection training device receives power from an external power source and, by switching the circuit with switch means S, can selectively switch the output from output terminal T between three or more different output modes including a first power failure mode in which output terminal T is in an unconnected state and not connected to any electrical circuit, and a second power failure mode in which output terminal T is in a grounded state; a voltage test unit 2 in which output terminal T of this power supply circuit unit 1 (including the case where the output terminal of a terminal block connected to output terminal T via an electric wire) is used as a voltage tester measurement terminal; and a housing 3 in which power supply circuit unit 1 and voltage test unit 2 are provided (mounted).

[0055] Here, the output terminal T, which serves as the terminal for voltage detector measurement, includes not only the output terminal of the power supply circuit unit 1 itself, but also, as described above, the output terminal of the terminal block connected to the output terminal of the power supply circuit unit 1 itself via an electric wire. In the case of this fourth form of voltage detection training device, in order to enable the trainee to successively perform voltage detection on output terminals T (voltage detector measurement terminals) of different output modes in one training session, it is preferable that the power supply circuit unit 1 has a plurality of output terminals T (output terminals T that serve as voltage detector measurement terminals) and that the output mode of each output terminal T can be selectively switched. Other configurations are the same as those of the voltage detection training devices of the first to third embodiments described above (see FIG. 10 for a configuration example of the housing 3), so detailed explanations will be omitted. Furthermore, similar to the grounding work for the support body described in the voltage detection training device of the first embodiment, the necessary grounding work is also carried out for the housing 3.

[0056] A method for training in voltage detection using the voltage detection training device of the present invention will be described below. The basis of the voltage detection training method using the voltage detection training device of the present invention is that the output terminal T of the power supply circuit unit 1 is set to an arbitrary output mode, and the trainee uses a voltage detector to detect voltage at the voltage test target unit 2 without being informed of the output mode of the output terminal T of the power supply circuit unit 1, and judges whether the voltage detection is appropriate by checking (comparing) the result of the voltage detection with the set output mode. This judgment is usually made by the instructor of the training. In the voltage detection training method using the voltage detection training device of the first and second embodiments described above, it is preferable that the output mode of the output terminal T of the power supply circuit unit 1 can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode, and that the output terminal T is set to an arbitrary output mode selected from these modes, and that the voltage detection training described above is performed. Also, in the voltage detection training method using the voltage detection training device of the third and fourth embodiments described above, it is preferable that the output mode of the output terminal T of the power supply circuit unit 1 can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, a first power outage mode, and a second power outage mode, and that the output terminal T is set to an arbitrary output mode selected from these modes, and that the voltage detection training described above is performed. Furthermore, it is preferable that the power supply circuit section 1 has a plurality of output terminals T, and that the output modes of the plurality of output terminals T are set to arbitrary output modes, respectively, before carrying out the voltage detection training described above.

[0057] Next, a more specific voltage detection training method using the voltage detection training device of the above-described embodiment will be described. First, a case where the voltage detection training device of the first and second embodiments of the present invention (embodiments having the circuit configurations of FIGS. 2, 6, 7, and 8) is used will be described. The circuit breaker 8 of the power supply circuit unit 1 is closed to turn on the power (power is received from an external power source through the power receiving terminal To). For example, when training is performed using all of the output terminals T1 to T10, the switch means S1 to S10 are operated to set the output modes of the output terminals T1 to T10 of the power supply circuit unit 1 so that there is at least one output terminal T that is in each of the output modes (1-i) to (1-iii) or (2-i) to (2-iii). For example, the output terminals T1, T4, T5, and T10 are set to the AC 100V output mode (1-i) or (2-i), the output terminals T2, T6, and T8 are set to the DC 24V output mode (1-ii) or (2-ii), and the remaining output terminals T3, T7, and T9 are set to the power outage mode (1-iii) or (2-iii). As mentioned above, many power supply panels (e.g., relay terminal boards, control panels) have a mixture of AC and DC output terminals, and in practical training that involves such power supply panels, it is extremely useful to set the output mode of each output terminal T1 to T10 as described above, and this is expected to produce a highly effective training effect.

[0058] Without being informed of the output mode of the output terminals T1 to T10 of the power supply circuit unit 1, the trainee performs the following voltage detections (a) and (b) in order on the voltage test unit 2 using a voltage tester. Here, the output modes of the output terminals T1 to T10 can be set arbitrarily for each trainee and each training session, so that the trainee can perform training that is in line with reality without having any information about the output modes of the output terminals T1 to T10. Furthermore, when detecting DC voltage using a dual-purpose AC / DC voltage tester, the trainee must have part of their body in contact with the panel case (earthed), so by performing the voltage test described in (b) below, the trainees can experience through their training the importance of adequately earthing their body when detecting DC voltage.

[0059] The results of the voltage detection (a) and (b) below are then collated (compared) with the set output mode to determine whether the voltage detection was successful, and this determination can be made immediately after the voltage detection. This determination is usually made by the instructor of the training. At this time, if the voltage detection result does not match the set output mode and the voltage detection is determined to be unsatisfactory, the cause can be easily identified. Also, for example, if the voltage detection (a) below is performed correctly for output terminal T in AC 100V output mode, the voltage detector will sound, but if the switch means S is operated to switch to DC 24V output mode, the sound will stop. By having such an experience, it is also possible to let the trainee experience the difference between voltage detection for AC voltage and DC voltage.

[0060] As described above, the power outage mode is the mode (1-iii) where "the output terminal T is connected to the AC line 6 AC and DC line 6 DC In the case of "power failure mode, in which the device is not connected to any electric circuit, including the power supply," (i.e., when using a voltage detection training device with the circuit configurations of Figures 2, 6, and 7), the voltage detector may sound in voltage detection of (a) and / or (b) above, even though output terminal T is in power failure mode. This is due to the electrostatic noise caused by the causes mentioned above and the nature of the supply-side power supply, and to confirm this, you may carry out the check procedure in (c) below as necessary. (a) AC voltage detection is performed on all of the output terminals T1 to T10 that are the target of voltage detection. (b) For output terminal T where the voltage detector did not sound in the voltage detection in (a) above, DC voltage detection is performed while the trainee touches the support x (in the case of Figure 4) on which the voltage detection training device is attached or the casing 3 (in the case of Figure 10) that constitutes the voltage detection training device with his bare hands. In this DC voltage detection, the operator (trainee) needs to hold the voltage detector with his bare hands. (c) In the voltage detection of (a) and / or (b) above, if the voltage detector beeps during voltage detection for any of the output terminals T set to the output mode (power outage mode) of (1-iii) above, measure the voltage of that output terminal T using a circuit meter (tester) to confirm that a power outage is occurring. Since the voltage of electrostatic noise is usually around 50V, measuring the voltage using a circuit meter (tester) will enable you to confirm that a power outage is occurring.

[0061] Basically, except for the case of electrostatic noise mentioned above, the voltage detector will not make a sound by mistake during voltage detection, and the problem is that it does not make a sound due to improper use even though it is in a charging state where it should make a sound. In this regard, the voltage detection training mentioned above allows you to experience, confirm, and verify whether the voltage detector "does not make a sound" is correct or is due to improper use, so the training is highly effective. Furthermore, in voltage detection training using the voltage detection training device of the present invention, the output mode setting of the output terminal T can be changed according to the trainee's level of skill, making it possible to conduct training according to the trainee's level of skill. Furthermore, in the voltage detection training using the voltage detection training device shown in FIG. 7, in addition to the voltage detection training described above, training in phase detection and / or line voltage measurement can be performed using a phase detector and / or a voltmeter in the test phase / voltage measurement unit 4, which uses the power receiving terminal To as the measurement terminal.

[0062] Also, a case where the voltage detection training device according to the third and fourth embodiments of the present invention (embodiments having the circuit configuration of FIG. 11) is used will be described. As in the case of the voltage detection training devices of the first and second embodiments of the present invention described above, the breaker 8 of the power supply circuit section 1 is closed and the power is turned on (power is received from an external power supply through the power receiving terminal To). For example, when training is performed using all of the output terminals T1 to T10, the switch means S1 to S10 are operated to set the output modes of the output terminals T1 to T10 of the power supply circuit unit 1 so that there is at least one output terminal T that is in each of the output modes (3-i) to (3-iv) above. For example, the output terminals T1, T5, and T10 are set to the AC 100V output mode (3-i), the output terminals T6 and T8 are set to the DC 24V output mode (3-ii), the output terminals T3 and T7 are set to the first power outage mode (3-iii), and the remaining output terminals T2, T4, and T9 are set to the second power outage mode (3-iv).

[0063] As mentioned above, many power supply panels (for example, relay terminal panels, control panels) have a mixture of AC and DC output terminals, and in the first power outage mode of (3-iii) above, even though output terminal T is in an unconnected state (neutral state) and not connected to any electrical circuit, a voltage (electrostatic noise) may be generated and the voltage detector may sound; this phenomenon can also occur in actual power supply panels. Therefore, in practical training that involves such power supply panels, it is very useful to set the output mode of each output terminal T1 to T10 as described above, and a high level of practical effectiveness can be expected.

[0064] Without being informed of the output mode of the output terminals T1 to T10 of the power supply circuit unit 1, the trainee uses the voltage detector to perform the following voltage detections (a) and (b) in order on the voltage detection unit 2. This voltage detection training and its judgment are the same as when using the voltage detection training devices of the first and second embodiments of the present invention described above. Furthermore, in the voltage detection of (a) or / and (b) above, even if the output terminal T is in the first power outage mode of (3-iii) above, a voltage may be generated due to electrostatic noise, causing the voltage detector to ring. Therefore, to check this point, the following confirmation procedure of (c) may be carried out as necessary.

[0065] (a) AC voltage detection is performed on all of the output terminals T1 to T10 that are the target of voltage detection. (b) For output terminal T where the voltage detector did not sound in the voltage detection in (a) above, DC voltage detection is performed while the trainee touches the support x (for example, the support x shown in Fig. 4) on which the voltage detection training device is attached or the housing 3 (for example, the housing 3 shown in Fig. 10) that constitutes the voltage detection training device with his bare hands. In this DC voltage detection, the operator (trainee) needs to hold the voltage detector with his bare hands. (c) In the voltage detection in (a) and / or (b) above, if the voltage detector beeps during voltage detection for any of the output terminals T set to the output mode (first power outage mode) in (3-iii) above, measure the voltage at that output terminal T using a circuit meter (tester) to confirm that a power outage is occurring. Since the voltage of electrostatic noise is usually around 50V, measuring the voltage using a circuit meter (tester) will enable you to confirm that a power outage is occurring. [Explanation of symbols]

[0066] 1 Power supply circuit section 2 Voltage to be tested 3. Housing 4 Test phase / voltage measurement section 5 DC power supply 6 AC AC line 6 DC DC Line 6 E Ground connection line 7. Transformers 8 Circuit Breaker 9 Earth Line 10 Foundations 11 Mounting holes 12 Electric wire 13 Terminal block 14 Conductor 15 AC ,15 DC ,15 E conductor wire 30 Main Unit 31 Door body S, S1 to S10 Switch means T, T1 to T10 output terminals To power receiving terminal x support

Claims

1. a power supply circuit section (1) that receives power from an external power supply and can selectively switch the output from an output terminal (T) between two or more different output modes, including a power outage mode, by switching the circuit with a switch means (S); a voltage test section (2) in which an output terminal (T) of the power supply circuit section (1) (including the case where the output terminal of a terminal block is connected to the output terminal (T) via an electric wire) is used as a voltage test terminal, This is an electrical equipment voltage detection training device that can be attached to any metal support that simulates a panel case.

2. a power supply circuit section (1) that receives power from an external power supply and can selectively switch the output from an output terminal (T) between two or more different output modes, including a power outage mode, by switching the circuit with a switch means (S); a voltage test section (2) in which the output terminal (T) of the power supply circuit section (1) (including the case where the output terminal of a terminal block connected to the output terminal (T) via an electric wire) serves as a voltage test terminal; A training device for voltage detection in electrical equipment, comprising a housing (3) in which a power supply circuit section (1) and a voltage test section (2) are provided.

3. The voltage detection training device for electrical equipment according to claim 1 or 2, characterized in that the power outage mode is a power outage mode in which the output terminal (T) is not connected to any electrical circuit and is in an unconnected state, or a power outage mode in which the output terminal (T) is in a grounded state.

4. 3. The voltage detection training device for electrical equipment according to claim 1, wherein the power supply circuit unit (1) can selectively switch the output from the output terminal (T) between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode.

5. a power supply circuit unit (1) that receives power from an external power supply and can selectively switch the output from an output terminal (T) between three or more different output modes by switching the circuit with a switch means (S), including a first power failure mode in which the output terminal (T) is in an unconnected state and is not connected to any electric circuit, and a second power failure mode in which the output terminal (T) is in a grounded state; a voltage test section (2) in which an output terminal (T) of the power supply circuit section (1) (including the case where the output terminal of a terminal block is connected to the output terminal (T) via an electric wire) is used as a voltage test terminal, This is an electrical equipment voltage detection training device that can be attached to any metal support that simulates a panel case.

6. a power supply circuit unit (1) that receives power from an external power supply and can selectively switch the output from an output terminal (T) between three or more different output modes by switching the circuit with a switch means (S), including a first power failure mode in which the output terminal (T) is in an unconnected state and is not connected to any electric circuit, and a second power failure mode in which the output terminal (T) is in a grounded state; a voltage test section (2) in which the output terminal (T) of the power supply circuit section (1) (including the case where the output terminal of a terminal block connected to the output terminal (T) via an electric wire) serves as a voltage test terminal; A training device for voltage detection in electrical equipment, comprising a housing (3) in which a power supply circuit section (1) and a voltage test section (2) are provided.

7. The power supply circuit unit (1) can selectively switch the output from the output terminal (T) between at least one AC voltage output mode, at least one DC voltage output mode, the first power failure mode, and the second power failure mode.

8. 7. A voltage detection training device for electrical equipment according to claim 1, 2, 5 or 6, characterized in that the power supply circuit section (1) has a plurality of output terminals (T) and the output mode of each output terminal (T) can be selectively switched.

9. The power supply circuit unit (1) has a power receiving terminal (To) for three-phase, three-wire AC 200V, 7. The voltage detection training device for electrical equipment according to claim 1, further comprising a test phase / voltage measurement unit (4) using the power receiving terminal (To) as a measurement terminal.

10. The power supply circuit section (1) is connected to an AC 100V line (6 ＡＣ ) and DC 24V DC line (6 ＤＣ ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, The voltage detection training device for electrical equipment according to claim 1 or 2, characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (1-i) to (1-iii): (1-i) The output terminal (T) is an AC 100V line (6 ＡＣ ) and AC100V output mode (1-ii) The output terminal (T) is a DC 24V line (6 ＤＣ ) and DC24V output mode (1-iii) The output terminal (T) is connected to the AC line (6 ＡＣ ) and DC line (6 ＤＣ Power outage mode in which the power supply is not connected to any electrical circuits, including the

11. The power supply circuit section (1) is connected to an AC 100V line (6 ＡＣ ), DC 24V DC line (6 ＤＣ ) and ground connection line (6 Ｅ ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, The voltage detection training device for electrical equipment according to claim 1 or 2, characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (2-i) to (2-iii): (2-i) The output terminal (T) is an AC 100V line (6 ＡＣ ) and AC100V output mode (2-ii) The output terminal (T) is a DC 24V line (6 ＤＣ ) and DC24V output mode (2-iii) The output terminal (T) is connected to the ground connection line (6 Ｅ ) and becomes grounded.

12. The power supply circuit section (1) is connected to an AC 100V line (6 ＡＣ ), DC 24V DC line (6 ＤＣ ) and ground connection line (6 Ｅ ) and a plurality of output terminals (T) and a plurality of switch means (S) corresponding thereto, The voltage detection training device for electrical equipment according to claim 5 or 6, characterized in that each switch means (S) can selectively switch the output mode of each output terminal (T) to the following (3-i) to (3-iv): (3-i) The output terminal (T) is an AC 100V line (6 ＡＣ ) and AC100V output mode (3-ii) The output terminal (T) is a DC 24V line (6 ＤＣ ) and DC24V output mode (3-iii) The output terminal (T) is connected to the AC line (6 ＡＣ ), DC line (6 ＤＣ ) and ground connection line (6 Ｅ The first power outage mode is a disconnected state in which the power supply is not connected to any electrical circuits, including the power supply. (3-iv) The output terminal (T) is connected to the ground connection line (6 Ｅ ) and becomes grounded.

13. A voltage detection training method using the voltage detection training device according to any one of claims 1, 2, 5 and 6, The output terminal (T) of the power supply circuit unit (1) is set to an arbitrary output mode, A method for training in voltage detection of electrical equipment, characterized in that a trainee uses a voltage detector to perform voltage detection on a test part (2) without being informed of the output mode of an output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode.

14. The output mode of the output terminal (T) of the power supply circuit unit (1) can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, and a power outage mode; 14. The method for practical training in voltage detection of electrical equipment according to claim 13, wherein the output terminal (T) is set to an arbitrary output mode selected from the above.

15. The output mode of the output terminal (T) of the power supply circuit unit (1) can be selectively switched between at least one AC voltage output mode, at least one DC voltage output mode, the first power failure mode, and the second power failure mode, 14. The method for practical training in voltage detection of electrical equipment according to claim 13, wherein the output terminal (T) is set to an arbitrary output mode selected from the above.

16. 14. The method for voltage detection training of electrical equipment according to claim 13, characterized in that the power supply circuit unit (1) has a plurality of output terminals (T), and the output modes of the plurality of output terminals (T) are set to any output mode.

17. A voltage detection training method using a voltage detection training device in which a power supply circuit section (1) has a power receiving terminal (To) for three-phase three-wire AC 200V, and further includes a test phase / voltage measurement section (4) that uses the power receiving terminal (To) as a measurement terminal, The method for training in voltage detection of electrical equipment according to claim 13, characterized in that the trainee in voltage detection further performs phase detection and / or line voltage measurement in the test phase / voltage measurement unit (4) using a phase detector and / or a voltmeter.

18. A voltage detection training method using the voltage detection training device according to claim 10, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (1-i) to (1-iii), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage detection target part (2) using a voltage detector without being informed of the output mode of an output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode, and further performs the following confirmation work (c) as necessary. (a) Perform AC voltage detection for all of the multiple output terminals (T) to be detected. (b) For the output terminal (T) where the voltage detector did not sound in the voltage detection in (a) above, the trainee shall perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands. (c) In the voltage detection of (a) or / and (b) above, if the voltage detector beeps during voltage detection for any of the output terminals (T) set to the output mode of (1-iii) above, measure the voltage of that output terminal (T) using a circuit meter to confirm that it is in a power outage state.

19. A voltage detection training method using the voltage detection training device according to claim 11, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (2-i) to (2-iii), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage detection target part (2) using a voltage detector without being informed of the output mode of an output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode. (a) Perform AC voltage detection for all of the multiple output terminals (T) to be detected. (b) For the output terminal (T) where the voltage detector did not sound in the voltage detection in (a) above, the trainee shall perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands.

20. A voltage detection training method using the voltage detection training device according to claim 12, The output modes of the plurality of output terminals (T) of the power supply circuit unit (1) are set so that there is at least one output terminal (T) that is in each of the output modes (3-i) to (3-iv), A method for training in voltage detection of electrical equipment, characterized in that a trainee performs the following voltage detections (a) and (b) on a voltage detection target part (2) using a voltage detector without being informed of the output mode of an output terminal (T) of a power supply circuit part (1), and determines whether the voltage detection is appropriate by comparing the result of the voltage detection with the set output mode, and further performs the following confirmation work (c) as necessary. (a) Perform AC voltage detection for all of the multiple output terminals (T) to be detected. (b) For the output terminal (T) where the voltage detector did not sound in the voltage detection in (a) above, the trainee shall perform a DC voltage detection while touching the support on which the voltage detection training device is attached or the casing (3) that constitutes the voltage detection training device with his or her bare hands. (c) In the voltage detection of (a) or / and (b) above, if the voltage detector sounds at any of the output terminals (T) set to the output mode of (3-iii) above, measure the voltage of that output terminal (T) using a circuit meter to confirm that it is in a power outage state due to the first power outage mode.

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