JP3169611U - Leakage current location detection device and leakage current location measurement device - Google Patents

Abstract

An apparatus for detecting a leakage current location between a load-side neutral electrode N and a ground of a branch leakage breaker is provided. In a measurement related to a leakage current location, a branch leakage breaker 6 of a distribution board A supplied by a TT grounding method, a neon current limiting resistor on a power supply side, a circuit display means, a branch leakage breaker 6 and a load side circuit. 9 and the procedure for measuring the leakage current location of the three-wire measuring object X2L connected to the grounding electrode outlet with IC tag 10 are as follows. Manually disconnect the branch leakage breaker 6 and use the neon current limiting resistor on the power supply side and circuit display means to connect the branch leakage breaker 6 to the load side circuit 9 between the neutral line N and the ground line and between the power line P and the ground. The leakage current state between the lines is displayed on the circuit, and the measurement terminal C and the measuring device Z provided on the grounding electrode line B of the distribution board A are provided to measure and confirm the leakage current. Therefore, it becomes easy to make a measurement related to the leakage current state and request a circuit modification. [Selection] Figure 2

Description

The present invention is a power supply for the branch leakage breaker of the distribution board (A) (6) between the neutral line N and the ground line of the distribution board (9) and the load side circuit (9), which is supplied by the TT grounding method. It relates to the circuit and measurement related to the leakage current between the line P and the ground line.

  Conventionally, for example, in the “Detailed Regulations for Handling Ministerial Regulations for Establishing Technical Standards of Electrical Appliances in the Electrical Appliance and Material Safety Law” and “International Standards of IEC 60335-1: 1994”, the two connected to electrical appliances (measurement objects) This type of leakage is instructed to measure the leakage current between any one of the AC power lines (hereinafter also referred to as “power lines”) and the exterior of the electrical equipment (exposed charging section). There is a leakage current measuring device capable of measuring current. (For example, see Patent Document 1)

JP 2010-91581 A

Leakage current recorder: Curie Kroger: Kyoritsu Electric Instruments Co., Ltd. Sound emission type voltage detector: AC40V or less: HASEGAWA

Power distribution cord and submersible pump connected to the branch leakage breaker (6 ) of the distribution board (A) supplied by the TT grounding system (6) Load side circuit (9) and grounding outlet (10) with IC tag In non-grounded equipment , the branch leakage breaker (6) detects and cuts off the leakage current between the power line P and the ground line of the load side circuit (9), but the switch on the power line P side of the submersible pump and non-grounded equipment etc. there is a device that does not hold also in the circuit and equipment and the power cord of the branch circuit breaker (6) the load side of the distribution panel (a) (9), leakage current condition between the ground line and the neutral line N due to damage , it was not detected in the branch circuit breaker (6) (known) problems.

The leakage current circuit is measured with the main breaker (5) opened by the limiter (1), primary feed circuit (2) and DC controller (3) of the distribution board (A) supplied by the TT grounding method. It consists of the circuit indicator L side (7L) and circuit indicator N side (8N) of the earth leakage breaker (6), and the measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) . in operation button (H) was charged neutral phase mains N side change-over switch (bE), and the circuit displays a neutral phase mains N and (NL) and applying means for applying a neon current limit, the branch circuit breaker (6) circuit display N side (8N) is lit, it branched earth leakage breaker (6) the load-side circuit (9) of the power supply line P and between the grounding line leakage current of the neutral line N and the ground line and between the load side circuit (9) Circuit measurement is provided by an apparatus for measuring a leakage current circuit using a measuring device (Z) at a measurement terminal (C) provided on a grounding electrode (B ) of a distribution board (A) .

However, the measurement of the leakage current circuit is usually performed after the branch leakage breaker (9) of the distribution board (A) supplied by the TT grounding method has been confirmed to be in the cut-off state, and the protection of equipment connected to other circuits. Take countermeasures, then open the main breaker with the operation button (H) and leak using the measuring device (Z) at the measuring terminal (C) provided on the grounding electrode (B) of the distribution board (A). Although has a configuration for measuring current circuit, leakage between the branch circuit breaker (6) the load-side circuit (9) of the power supply line P and the ground line of the neutral line N and the ground line and between the load side circuit (9) a measurement of the current circuit, the branch circuit breaker (6) such as 2-wire device and the power cord and water pump directly to leakage current measurement of the ground state of the connection to the IC tag with an earth electrode outlet (10) of the load circuit (9) division because, in the measuring terminal provided on the ground polar (B) of the distribution panel (a) (C), it can not be measured leakage current condition using a measuring device (Z) There is.

In detection of leakage current circuit, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor on power supply L side , circuit indication (6NL) means , load side circuit ( 9) and a 2-wire measuring object (X1N) connected to a grounding electrode outlet (10) with an IC tag and a non-contact type measuring device (Y), a branch leakage breaker (6) and a load side circuit (9) a power supply line P between the ground line and the neutral line N leakage current circuit between the ground line in the detection, the branch circuit breaker (6) the load-side circuit (9) power supply line P and leakage current between the ground lines of the When the current exceeds the specified value, it is shut off by the detecting means, and the neutral pole of the branch leakage breaker (6) load side circuit (9) using the neon current limiting resistor on the power supply L side and circuit indication (6NL) means circuit display a power supply line P leakage current between the ground line of the line and the ground line and between the load side circuit (9) (6NL) is lit, leakage to display the current circuit of the leakage current circuit with an open confirmation Detection device.

For detection of leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When detecting the leakage current location of the 2-wire measuring object (X1N) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line Leakage current location detection device equipped with a lighting check and non-contact type measuring instrument (Y) that lights the circuit (6NL) of the leakage current status between P and the ground wire.

In measurement related to the leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When measuring the leakage current location of the 3-wire measuring object (X2L) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line P and circuit displays the leakage current condition between the ground line (6NL) is lit, comprising measuring terminal provided on the ground polar (B) of the distribution panel (a) and (C) a measuring device (Z), leakage Since the current can be measured and confirmed , it becomes easier to make a measurement related to the leakage current state and to request a circuit modification .

For detection related to the leakage current circuit, the main that can be opened with the manual opening limiter (1) of the distribution board (A) , the primary feed circuit (2), and the DC operating device (3) supplied by the TT grounding method. Breaker (5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side Terminal for measurement (C) provided on ground wire (B) of 3- wire measuring object (X2L) connected to circuit (9) and grounding electrode outlet (10) with IC tag and distribution board (A ) and measuring with a device (Z), upon detecting a leakage current circuit between the branch circuit breaker (6) the load-side circuit (9) between the power supply line P and the ground line and between the neutral line N ground wire, manual After the limiter (1) of the distribution board (A) is opened , the main circuit breaker (5) is opened with the DC operation device (3) of the primary feed circuit (2), and the discharge switch is turned on with the DC (4). (HS) will be opened after the launch, and the neutral trunk line Set the charging of N to the discharge state, and press the operation button (H) to turn on the neutral phase main line N side changeover switch (BE), and the neon current limit resistance and circuit indication (NL) means neon current limit to the neutral phase main line N by applying the resistor turns on the circuit display N side (8N) branch circuit breaker (6), leakage current circuit and manually open circuit, the circuit display N side (8N) of leakage current circuit with turn-off confirmation Detection device .

In the measurement of the leakage current location, the main circuit breaker ( 1) of the distribution board (A) supplied by the TT grounding method, the primary breaker ( 1), the primary feed circuit (2) and the DC operating device (3) 5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side circuit ( 9) and 3- wire measuring object (X2L) connected to the grounding electrode outlet (10) with IC tag and measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) When measuring the leakage current location of a 3-wire measuring object (X2L) equipped with a device (Z) and connected to the grounding electrode outlet (10) with IC tag by means of leakage current circuit measurement, the power is manually distributed. After the limiter (1 ) of the panel (A) is opened , the main breaker (5) is opened with the DC operation device (3) of the primary feed circuit (2), and the discharge switch (HS) is opened with DC (4 ). the open after the input neutral The charging of the main line N to the discharge state, the neutral phase mains N side change-over switch (BE) was charged with the operation button (H), neon current limiting resistor and a circuit display neutral phase mains N (NL) means neon current By applying a limiting resistor , the circuit indication N side (8N) of the branch leakage breaker (6) is turned on, and the measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) Leakage current circuit and leakage current location measuring device that measure with the measuring device (Z) .

In detection of leakage current circuit, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor on power supply L side , circuit indication (6NL) means , load side circuit ( 9) and a 2-wire measuring object (X1N) connected to a grounding electrode outlet (10) with an IC tag and a non-contact type measuring device (Y), a branch leakage breaker (6) and a load side circuit (9) a power supply line P between the ground line and the neutral line N leakage current circuit between the ground line in the detection, the branch circuit breaker (6) the load-side circuit (9) power supply line P and leakage current between the ground lines of the When the current exceeds the specified value, it is shut off by the detecting means, and the neutral pole of the branch leakage breaker (6) load side circuit (9) using the neon current limiting resistor on the power supply L side and circuit indication (6NL) means circuit display a power supply line P leakage current between the ground line of the line and the ground line and between the load side circuit (9) (6NL) is lit, leakage to display the current circuit of the leakage current circuit with an open confirmation Out device, repair request of the leakage current circuit can be easily performed.

For detection of leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When detecting the leakage current location of the 2-wire measuring object (X1N) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line P and circuit displays the leakage current condition between the ground line (6NL) is turned, the lighting confirmation and non-contact type measuring instrument (Y) detector of leakage current position with a can leak a portion of the current non-contact The detector (Y) detection display and buzzer confirmation means are provided , and the safety of inspection work can be improved, which is excellent in practicality .

For detection of leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When measuring the leakage current location of the 3-wire measuring object (X2L) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line P and circuit displays the leakage current condition between the ground line (6NL) is lit, comprising measuring terminal provided on the ground polar (B) of the distribution panel (a) and (C) a measuring device (Z), leakage Since the current can be measured and confirmed , it becomes easier to make a measurement related to the leakage current state and to request a circuit modification .

For detection related to the leakage current circuit, the main that can be opened with the manual opening limiter (1) of the distribution board (A) , the primary feed circuit (2), and the DC operating device (3) supplied by the TT grounding method. Breaker (5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side Terminal for measurement (C) provided on ground wire (B) of 3- wire measuring object (X2L) connected to circuit (9) and grounding electrode outlet (10) with IC tag and distribution board (A ) and measuring with a device (Z), upon detecting a leakage current circuit between the branch circuit breaker (6) the load-side circuit (9) between the power supply line P and the ground line and between the neutral line N ground wire, manual After the limiter (1) of the distribution board (A) is opened , the main circuit breaker (5) is opened with the DC operation device (3) of the primary feed circuit (2), and the discharge switch is turned on with the DC (4). (HS) will be opened after the launch, and the neutral trunk line Set the charging of N to the discharge state, and press the operation button (H) to turn on the neutral phase main line N side changeover switch (BE), and the neon current limit resistance and circuit indication (NL) means neon current limit to the neutral phase main line N by applying the resistor turns on the circuit display N side (8N) branch circuit breaker (6), leakage current circuit and manually open circuit, the circuit display N side (8N) of leakage current circuit with turn-off confirmation The detection device can easily request repair of the leakage current circuit .

In the measurement of the leakage current location, the main circuit breaker ( 1) of the distribution board (A) supplied by the TT grounding method, the primary breaker ( 1), the primary feed circuit (2) and the DC operating device (3) 5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side circuit ( 9) and 3- wire measuring object (X2L) connected to the grounding electrode outlet (10) with IC tag and measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) When measuring the leakage current location of a 3-wire measuring object (X2L) equipped with a device (Z) and connected to the grounding electrode outlet (10) with IC tag by means of leakage current circuit measurement, the power is manually distributed. After the limiter (1 ) of the panel (A) is opened , the main breaker (5) is opened with the DC operation device (3) of the primary feed circuit (2), and the discharge switch (HS) is opened with DC (4 ). the open after the input neutral The charging of the main line N to the discharge state, the neutral phase mains N side change-over switch (BE) was charged with the operation button (H), neon current limiting resistor and a circuit display neutral phase mains N (NL) means neon current By applying a limiting resistor , the circuit indication N side (8N) of the branch leakage breaker (6) is turned on, and the measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) The leakage current circuit and leakage current location measuring device that is measured by the measuring device (Z) are requested to make measurements and repairs related to the leakage current circuit and owner registration `` parts deteriorate as the product ages (aging). '' It becomes easy .

It is a block system diagram showing the configuration of the two-wire measuring object (X1N) of the present invention. It is a block system diagram showing the configuration of the three-wire measurement object (X2L) of the present invention.

In detection of leakage current circuit, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor on power supply L side , circuit indication (6NL) means , load side circuit ( 9) and a 2-wire measuring object (X1N) connected to a grounding electrode outlet (10) with an IC tag and a non-contact type measuring device (Y), a branch leakage breaker (6) and a load side circuit (9) a power supply line P between the ground line and the neutral line N leakage current circuit between the ground line in the detection, the branch circuit breaker (6) the load-side circuit (9) power supply line P and leakage current between the ground lines of the When the current exceeds the specified value, it is shut off by the detecting means, and the neutral pole of the branch leakage breaker (6) load side circuit (9) using the neon current limiting resistor on the power supply L side and circuit indication (6NL) means circuit display a power supply line P leakage current between the ground line of the line and the ground line and between the load side circuit (9) (6NL) is lit, leakage to display the current circuit of the leakage current circuit with an open confirmation Output device, easily may request the repair according to the leakage current circuit.

For detection of leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When detecting the leakage current location of the 2-wire measuring object (X1N) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line P and circuit displays the leakage current condition between the ground line (6NL) is turned, the lighting confirmation and non-contact type measuring instrument (Y) detector of leakage current location with a a non-contact type measuring instrument (Y) It is excellent in practicality and can be provided with a detection display and a buzzer confirmation means to ensure the safety of inspection work.

In measurement related to the leakage current location, branch leakage breaker (6) of distribution board (A) supplied by TT grounding method, neon current limiting resistor and circuit indication (6NL) means on power supply L side , branch leakage breaker (6) When measuring the leakage current location of the 3-wire measuring object (X2L) connected to the load side circuit (9) and the grounding outlet (10) with IC tag , connect the branch leakage breaker (6). Manually shut off and use the neon current limiting resistor on the power supply L side and circuit indication (6NL) means to connect the branch leakage breaker (6) to the load side circuit (9) between the neutral line N and the ground line and the power line P and circuit displays the leakage current condition between the ground line (6NL) is lit, comprising measuring terminal provided on the ground polar (B) of the distribution panel (a) and (C) a measuring device (Z), leakage Since the current can be measured and confirmed , it becomes easier to make a measurement related to the leakage current state and to request a circuit modification .

For detection related to the leakage current circuit, the main that can be opened with the manual opening limiter (1) of the distribution board (A) , the primary feed circuit (2), and the DC operating device (3) supplied by the TT grounding method. Breaker (5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side Terminal for measurement (C) provided on ground wire (B) of 3- wire measuring object (X2L) connected to circuit (9) and grounding electrode outlet (10) with IC tag and distribution board (A ) and measuring with a device (Z), upon detecting a leakage current circuit between the branch circuit breaker (6) the load-side circuit (9) between the power supply line P and the ground line and between the neutral line N ground wire, manual After the limiter (1) of the distribution board (A) is opened , the main circuit breaker (5) is opened with the DC operation device (3) of the primary feed circuit (2), and the discharge switch is turned on with the DC (4). (HS) will be opened after the launch, and the neutral trunk line Set the charging of N to the discharge state, and press the operation button (H) to turn on the neutral phase main line N side changeover switch (BE), and the neon current limit resistance and circuit indication (NL) means neon current limit to the neutral phase main line N by applying the resistor turns on the circuit display N side (8N) branch circuit breaker (6), leakage current circuit and manually open circuit, the circuit display N side (8N) of leakage current circuit with turn-off confirmation The detection device makes it easier to request a circuit modification .

In the measurement of the leakage current location, the main circuit breaker ( 1) of the distribution board (A) supplied by the TT grounding method, the primary breaker ( 1), the primary feed circuit (2) and the DC operating device (3) 5), neon current limiting resistor , circuit indication (NL) means , branch leakage breaker (6) circuit indication L side (7L), circuit indication N side (8N) , branch leakage breaker (6) load side circuit ( 9) and 3- wire measuring object (X2L) connected to the grounding electrode outlet (10) with IC tag and measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A) When measuring the leakage current location of a three-wire measuring object (X2L) equipped with a device (Z) and connected to a grounding electrode outlet (10) with an IC tag by means of measuring means , the leakage current circuit is manually separated. After the limiter (1) of the switchboard (A) is opened , the main breaker (5) is opened using the DC operating device (3) of the primary feed circuit (2), and the discharge switch (HS middle) and the open after the introduction The charging phase mains N in a discharged state, a neutral phase mains N side change-over switch (BE) was charged with the operation button (H), neon current limiting resistor and a circuit display neutral phase mains N (NL) means Neon By applying a current limiting resistor , the circuit indication N side (8N) of the branch leakage breaker (6) is turned on, and the measurement terminal (C) provided on the grounding electrode (B) of the distribution board (A ) Leakage current circuit and leakage current location measuring device to measure with the measuring instrument (Z) , the leakage current circuit and the owner registration `` measurement and repair requests related to `` parts deteriorate as the product gets older (aging) '' It becomes easy to do .

60 High Voltage Side Distribution Line 61 Transformer 62 Secondary Winding 63 of Transformer Neutral Line 64 Neutral Side Grounding Line 65 Low Voltage Side Trunk 66 Power Meter A Distribution Board (A)
B Grounding electrode (B)
C Measurement terminal (C)
Z measuring device (Z)
1 Limiter (1)
2 Primary feed circuit (2)
3 DC operation device (3)
4 DC opening device (4)
5 trunk breakers (5)
HS discharge switch (HS)
N Neutral Soukan N
H Operation button (H)
BE neutral phase trunk N side switch (BE)
CE voltage L side switch (CE)
DE Voltage L side switch (DE)
NL Neon current limit and circuit display (NL)
6 branch leakage breaker (6)
7 Circuit display L side (7L)
8 Circuit display N side (8N)
9 Load side circuit (9)
10 Grounding outlet with IC tag (10)
11 2-wire measuring object (X1N)
12 3-wire measuring object (X2L)
6NL Power supply L side neon current limit and circuit display (6NL)
Y Non-contact type measuring instrument (Y)

Claims (2)

In the load-side circuit of the branch leakage breaker and the grounding electrode outlet with IC tag, and the 2-wire device, power cord, submersible pump, and non-grounding device connected to the grounding electrode outlet with IC tag A leakage current detection means between the load-side hot phase P of the branch leakage breaker, the neutral electrode N, and the ground, and when the leakage current between the load-side hot phase P of the branch leakage breaker and the ground flows beyond a predetermined value The branch leakage breaker is a cutoff means, the neon current limiting means of the branch leakage breaker is a leakage current supply means between the load-side neutral pole N of the branch leakage breaker and the ground, and the load-side neutral pole N of the branch leakage breaker is A circuit indicator lighting means between the ground and a safety light inspection device at the circuit terminal, and a leakage current detection point between the load-side neutral electrode N of the branch leakage breaker and the ground Inspection system. In the load-side circuit of the branch leakage breaker and the grounding electrode outlet with IC tag, and the 2-wire device, power cord, submersible pump, and non-grounding device connected to the grounding electrode outlet with IC tag The leakage current detection means between the load side hot phase P of the branch leakage breaker P, the neutral electrode N and the earth, and the inspection operator is a non-contact type measuring device and inspection measurement means, and the load side neutrality of the branch leakage breaker Leakage current detection display means between the pole N and the earth and a buzzer are used as confirmation means for the safety of inspection workers, and as a means for removing the leakage current detection display area between the load-side neutral pole N and the earth of the branch leakage breaker The branch leakage breaker is a neon current limiting means and circuit display extinguishing means between the load-side neutral electrode N and the ground, and the branch leakage breaker between the load-side neutral electrode N and the ground of the branch leakage breaker A system for inspecting a leakage current detection point between the load-side neutral electrode N of the branch leakage breaker and ground.

Images