CN203275565U - Multifunctional grounding detector - Google Patents

Multifunctional grounding detector Download PDF

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Publication number
CN203275565U
CN203275565U CN 201320333053 CN201320333053U CN203275565U CN 203275565 U CN203275565 U CN 203275565U CN 201320333053 CN201320333053 CN 201320333053 CN 201320333053 U CN201320333053 U CN 201320333053U CN 203275565 U CN203275565 U CN 203275565U
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CN
China
Prior art keywords
rectifier bridge
resistance
test pencil
output terminal
circuit breaker
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CN 201320333053
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Chinese (zh)
Inventor
王振华
李强
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SHANXI KUNMING CIGARETTES CO Ltd
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SHANXI KUNMING CIGARETTES CO Ltd
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Abstract

The utility model relates to electrical circuit detection technologies, in particular, a multifunctional grounding detector. With the multifunctional grounding detector of the utility model adopted, the problems of low detection efficiency and poor detection accuracy of an existing electric circuit detection technology can be solved. The multifunctional grounding detector comprises a 15mA release, a 10mA controller, and a 20mA controller; the 15mA release includes a first meter probe, a second meter probe, a third meter probe, a zero-sequence current transformer, a bridge rectifier composed of an eleventh diode, a twelfth diode, a thirteenth diode and a fourteenth diode, an IC54123 residual-current circuit breaker, a silicon controlled rectifier, a tripping mechanism, a varistor, a twelfth resistor, a thirteenth resistor and a fourteenth resistor, a load resistor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, a key switch, a first single-pole double-throw switch and a second single-pole double-throw switch. The multifunctional grounding detector of the utility model is suitable for grounding and wiring detection of sockets (or wiring boards), grounding detection of equipment (facilities) and performance detection of electric leakage protectors and detection of various kinds of electrical circuits.

Description

Multifunctional grounded detector
Technical field
The utility model relates to the electric wiring detection technique, specifically a kind of multifunctional grounded detector.
Background technology
In daily life, use the most general electric wiring detection and comprise: the ground connection of socket (or terminal block) and distribution detect, the ground connection of equipment (or facility) is detected, the Performance Detection of earth leakage protective device.Under the prior art condition, it is mainly to take socket (or terminal block) apart by craft to detect that the ground connection of socket (or terminal block) and distribution detect.The detection of the ground connection of equipment (or facility) is mainly to detect by range estimation.The Performance Detection of earth leakage protective device is mainly to detect by manual operations.Above-mentioned electric wiring detection technique all exists because self principle is limit the problem that detection efficiency is low and detection accuracy is poor.Be necessary for this reason to invent that a kind of ground connection and distribution that can carry out simultaneously socket (or terminal block) detects, the ground connection of equipment (or facility) is detected, the device of the Performance Detection of earth leakage protective device, to solve the existing problem that electric wiring detection technique detection efficiency is low and detection accuracy is poor.
Summary of the invention
The utility model provides a kind of multifunctional grounded detector in order to solve the existing problem that electric wiring detection technique detection efficiency is low and detection accuracy is poor.
The utility model is to adopt following technical scheme to realize: multifunctional grounded detector comprises 15mA electrical apparatus release, 10mA controller and 20mA controller;
The first rectifier bridge, IC54123 residual current circuit breaker, controllable silicon, tripping mechanism, voltage dependent resistor (VDR), 12-Di, 14 resistance, pull-up resistor, 11-Di, 16 electric capacity, keyswitch and the first-the second single-pole double-throw switch (SPDT) that described 15mA electrical apparatus release comprises the first test pencil, the second test pencil, the 3rd test pencil, zero sequence current mutual inductor, is made of 11-Di, 14 diodes;
Described 10mA controller comprises the second rectifier bridge, the 21 triode, the 21-the 25 resistance, the 21-the 22 electric capacity, the 25 voltage stabilizing diode and the 26 light emitting diode that is made of the 21-the 24 diode;
Described 20mA controller comprises the 3rd rectifier bridge, the 31 triode, 31-Di, 35 resistance, 31-Di, 33 electric capacity, the 35 voltage stabilizing diode and the 36 light emitting diode that is made of 31-Di, 34 diodes;
The annular core of zero sequence current mutual inductor is sheathed on the first test pencil and the second test pencil; One end of the primary winding of zero sequence current mutual inductor is connected with the first test pencil by keyswitch; The other end of the primary winding of zero sequence current mutual inductor is connected with the second test pencil by the 14 resistance; An input end of the first rectifier bridge is connected with the first test pencil by the coil of tripping mechanism; Another input end of the first rectifier bridge is connected with the second test pencil; The first pin of IC54123 residual current circuit breaker is connected with an end of the secondary coil of zero sequence current mutual inductor, and the first pin of IC54123 residual current circuit breaker is connected with the negative output terminal of the first rectifier bridge by the 15 electric capacity; The second pin of IC54123 residual current circuit breaker is connected with the other end of the secondary coil of zero sequence current mutual inductor by the 13 resistance; The 3rd pin of IC54123 residual current circuit breaker is connected with the negative output terminal of the first rectifier bridge; The 4th pin of IC54123 residual current circuit breaker is connected with the negative output terminal of the first rectifier bridge by the 11 electric capacity; The 5th pin of IC54123 residual current circuit breaker is connected with the 4th pin of IC54123 residual current circuit breaker; The 6th pin of IC54123 residual current circuit breaker is controlled the utmost point by the 13 electric capacity and silicon controlled and is connected; The 7th pin of IC54123 residual current circuit breaker is controlled the utmost point with silicon controlled and is connected; The 8th pin of IC54123 residual current circuit breaker is connected with the positive output end of the first rectifier bridge by the 12 resistance, and the 8th pin of IC54123 residual current circuit breaker is connected with the negative output terminal of the first rectifier bridge by the 14 electric capacity; The silicon controlled anode is connected with the positive output end of the first rectifier bridge; The silicon controlled negative electrode is connected with the negative output terminal of the first rectifier bridge; Silicon controlled is controlled the utmost point and is connected with the negative output terminal of the first rectifier bridge by the 12 electric capacity; The two ends of voltage dependent resistor (VDR) respectively with the first test pencil be connected test pencil and be connected; The two ends of pull-up resistor are connected with the two ends of the secondary coil of zero sequence current mutual inductor respectively; The two ends of the 16 electric capacity are connected with the two ends of the secondary coil of zero sequence current mutual inductor respectively; The switch series of tripping mechanism is connected on the first test pencil and the second test pencil; The moving contact of the first single-pole double-throw switch (SPDT) is connected with the first test pencil; A stationary contact of the first single-pole double-throw switch (SPDT) is connected with an input end of the second rectifier bridge by the 21 resistance, the 22 resistance successively; Another stationary contact of the first single-pole double-throw switch (SPDT) is connected with an input end of the 3rd rectifier bridge by the 31 resistance, the 32 resistance successively; The moving contact of the second single-pole double-throw switch (SPDT) is connected with another input end of the second rectifier bridge and another input end of the 3rd rectifier bridge respectively; Two stationary contacts of the second single-pole double-throw switch (SPDT) are connected with the 3rd test pencil with the second test pencil respectively;
The collector of the 21 triode is connected with the positive output end of the second rectifier bridge; The emitter of the 21 triode is connected with the negative output terminal of the second rectifier bridge by the 22 electric capacity; The base stage of the 21 triode is connected with the positive output end of the second rectifier bridge by the 25 resistance, the 23 resistance successively, and the base stage of the 21 triode is connected with the negative output terminal of the second rectifier bridge by the 25 resistance, the 24 resistance successively; The negative electrode of the 25 voltage stabilizing diode is connected with the positive output end of the second rectifier bridge; The anode of the 25 voltage stabilizing diode is connected with the negative output terminal of the second rectifier bridge; The anode of the 26 light emitting diode is connected with the positive output end of the second rectifier bridge; The negative electrode of the 26 light emitting diode is connected with the negative output terminal of the second rectifier bridge; The two ends of the 21 electric capacity are connected with the two ends of the 21 resistance respectively;
The collector of the 31 triode is connected with the positive output end of the 3rd rectifier bridge; The emitter of the 31 triode is connected with the negative output terminal of the 3rd rectifier bridge by the 32 electric capacity; The base stage of the 31 triode is connected with the positive output end of the 3rd rectifier bridge by the 35 resistance, the 33 resistance successively, and the base stage of the 31 triode is connected with the negative output terminal of the 3rd rectifier bridge by the 35 resistance, the 34 resistance successively; The negative electrode of the 35 voltage stabilizing diode is connected with the positive output end of the 3rd rectifier bridge; The anode of the 35 voltage stabilizing diode is connected with the negative output terminal of the 3rd rectifier bridge; The anode of the 36 light emitting diode is connected with the positive output end of the 3rd rectifier bridge; The negative electrode of the 36 light emitting diode is connected with the negative output terminal of the 3rd rectifier bridge; The two ends of the 31 electric capacity are connected with the two ends of the 31 resistance respectively.
During work, the first test pencil, the second test pencil, the 3rd test pencil are connected with external communication electricity (from socket (or terminal block), equipment (or facility), earth leakage protective device etc.).The external communication electricity is powered to the 15mA electrical apparatus release by the first rectifier bridge.When power supply was normal, the switch of tripping mechanism was in closure state, and zero sequence current mutual inductor does not produce magnetic flux, the input of IC54123 residual current circuit breaker no signal.At this moment, controllable silicon is in off state, and tripping mechanism is failure to actuate.When abnormal electrical power supply, zero sequence current mutual inductor produces magnetic flux, and the IC54123 residual current circuit breaker has the signal input.At this moment, controllable silicon is opened, the tripping mechanism action, and the switch of tripping mechanism is in off-state.In like manner, the external communication electricity is powered to the 10mA controller by the second rectifier bridge.When power supply was normal, the 21 triode was in conducting state, and the 26 light emitting diode is lighted.When abnormal electrical power supply, the 26 light emitting diode does not work.In like manner, the external communication electricity is powered to the 20mA controller by the 3rd rectifier bridge.When power supply was normal, the 31 triode was in conducting state, and the 36 light emitting diode is lighted.When abnormal electrical power supply, the 36 light emitting diode does not work.Based on the above-mentioned course of work, the concrete testing process of multifunctional grounded detector described in the utility model comprises:
One, the ground connection of socket (or terminal block) and distribution detect:
1) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that zero line jack, right jack are that firewire jack, ground wire are reliable: 1.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.1.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.1.3) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil, the tripping mechanism action;
2) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that firewire jack, right jack are that zero line jack, ground wire are reliable: 2.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.2.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.2.3) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, tripping mechanism was failure to actuate.2.4) the first test pencil is inserted left jack, the second test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.2.5) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.2.6) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil, the tripping mechanism action;
3) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that firewire jack, right jack are zero line jack, unearthed line: 3.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.3.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.3.3) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, tripping mechanism was failure to actuate.3.4) the first test pencil is inserted left jack, the second test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.3.5) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.3.6) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, tripping mechanism was failure to actuate;
4) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that zero line jack, right jack are that ground wire jack, upper jack are firewire jack: 4.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.4.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode did not work.4.3) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil, the tripping mechanism action;
5) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that ground wire jack, right jack are that zero line jack, upper jack are firewire jack: 5.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.5.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, the 26 light emitting diode was lighted, and the tripping mechanism action;
6) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that ground wire jack, right jack are that firewire jack, upper jack are zero line jack: 6.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.6.2) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the second test pencil, the tripping mechanism action.6.3) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, the 26 light emitting diode was lighted;
7) when satisfying following condition simultaneously, the left jack that socket (or terminal block) is described is that firewire jack, right jack are that ground wire jack, upper jack are zero line jack: 7.1) the second test pencil is inserted left jack, the first test pencil is inserted right jack, the 3rd test pencil is inserted upper jack.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.7.2) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil, the tripping mechanism action.7.3) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, the 26 light emitting diode did not work;
Two, the ground connection of equipment (or facility) is detected:
1) when satisfying following condition simultaneously, the ground wire of devices illustrated (or facility) is reliable: 1.1) the second test pencil is connected the zero line of 220V power supply, the first test pencil is connected the live wire of 220V power supply, with the 3rd test pencil connection device (or facility) itself.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.1.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.1.3) when the moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil, the tripping mechanism action;
2) when satisfying following condition simultaneously, the ground wire of devices illustrated (or facility) is unreliable: 2.1) the second test pencil is connected the zero line of 220V power supply, the first test pencil is connected the live wire of 220V power supply, with the 3rd test pencil connection device (or facility) itself.The moving contact of the first single-pole double-throw switch (SPDT) is connected with the 10mA controller.2.2) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the second test pencil, the 26 light emitting diode was lighted.2.3) when the moving contact of the second single-pole double-throw switch (SPDT) was connected with the 3rd test pencil, tripping mechanism was failure to actuate;
Three, the Performance Detection of earth leakage protective device:
When satisfying following condition simultaneously, illustrate that earth leakage protective device is functional: the live wire that the first test pencil is connected earth leakage protective device.The moving contact of the second single-pole double-throw switch (SPDT) is connected with the 3rd test pencil.When the moving contact of the first single-pole double-throw switch (SPDT) is connected with the 20mA controller, the tripping mechanism action.
In sum; multifunctional grounded detector described in the utility model is by switching the first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT); and in conjunction with the action situation of illuminating state and the tripping mechanism of light emitting diode; ground connection and the distribution of having realized socket (or terminal block) detects, the ground connection of equipment (or facility) is detected, the Performance Detection of earth leakage protective device, thereby efficiently solves the existing problem that electric wiring detection technique detection efficiency is low and detection accuracy is poor.
The utility model is rational in infrastructure, design is ingenious; efficiently solve the existing problem that electric wiring detection technique detection efficiency is low, detection accuracy is poor, ground connection and the distribution that is applicable to socket (or terminal block) detects, the ground connection of equipment (or facility) is detected, the various electric wirings such as Performance Detection of earth leakage protective device detect.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Multifunctional grounded detector comprises 15mA electrical apparatus release, 10mA controller and 20mA controller;
The first rectifier bridge, IC54123 residual current circuit breaker T, controllable silicon SCR, tripping mechanism, voltage dependent resistor (VDR) R11,12-Di, 14 resistance R 12-R14, pull-up resistor RL, 11-Di, 16 capacitor C 11-C16, keyswitch SW-PB and the first-the second single-pole double-throw switch (SPDT) S1-S2 that described 15mA electrical apparatus release comprises the first test pencil L, the second test pencil N, the 3rd test pencil PE, zero sequence current mutual inductor ZCT, is made of 11-Di, 14 diode D11-D14;
Described 10mA controller comprises the second rectifier bridge, the 21 triode Q21, the 21-the 25 resistance R 21-R25, the 21-the 22 capacitor C 21-C22, the 25 voltage stabilizing diode D25 and the 26 light emitting diode D26 that is made of the 21-the 24 diode D21-D24;
Described 20mA controller comprises the 3rd rectifier bridge, the 31 triode Q31,31-Di, 35 resistance R 31-R35,31-Di, 33 capacitor C 31-C33, the 35 voltage stabilizing diode D35 and the 36 light emitting diode D36 that is made of 31-Di, 34 diode D31-D34;
The annular core of zero sequence current mutual inductor ZCT is sheathed on the first test pencil L and the second test pencil N; One end of the primary winding of zero sequence current mutual inductor ZCT is connected with the first test pencil L by keyswitch SW-PB; The other end of the primary winding of zero sequence current mutual inductor ZCT is connected with the second test pencil N by the 14 resistance R 14; An input end of the first rectifier bridge is connected with the first test pencil L by the coil L1 of tripping mechanism; Another input end of the first rectifier bridge is connected with the second test pencil N; The first pin of IC54123 residual current circuit breaker T is connected with an end of the secondary coil of zero sequence current mutual inductor ZCT, and the first pin of IC54123 residual current circuit breaker T is connected with the negative output terminal of the first rectifier bridge by the 15 capacitor C 15; The second pin of IC54123 residual current circuit breaker T is connected with the other end of the secondary coil of zero sequence current mutual inductor ZCT by the 13 resistance R 13; The 3rd pin of IC54123 residual current circuit breaker T is connected with the negative output terminal of the first rectifier bridge; The 4th pin of IC54123 residual current circuit breaker T is connected with the negative output terminal of the first rectifier bridge by the 11 capacitor C 11; The 5th pin of IC54123 residual current circuit breaker T is connected with the 4th pin of IC54123 residual current circuit breaker T; The 6th pin of IC54123 residual current circuit breaker T is connected with the control utmost point of controllable silicon SCR by the 13 capacitor C 13; The 7th pin of IC54123 residual current circuit breaker T is connected with the control utmost point of controllable silicon SCR; The 8th pin of IC54123 residual current circuit breaker T is connected with the positive output end of the first rectifier bridge by the 12 resistance R 12, and the 8th pin of IC54123 residual current circuit breaker T is connected with the negative output terminal of the first rectifier bridge by the 14 capacitor C 14; The anode of controllable silicon SCR is connected with the positive output end of the first rectifier bridge; The negative electrode of controllable silicon SCR is connected with the negative output terminal of the first rectifier bridge; The control utmost point of controllable silicon SCR is connected with the negative output terminal of the first rectifier bridge by the 12 capacitor C 12; The two ends of voltage dependent resistor (VDR) R11 respectively with the first test pencil L be connected test pencil N and be connected; The two ends of pull-up resistor RL are connected with the two ends of the secondary coil of zero sequence current mutual inductor ZCT respectively; The two ends of the 16 capacitor C 16 are connected with the two ends of the secondary coil of zero sequence current mutual inductor ZCT respectively; The switch S of tripping mechanism is serially connected with on the first test pencil L and the second test pencil N; The moving contact of the first single-pole double-throw switch (SPDT) S1 is connected with the first test pencil L; The stationary contact of the first single-pole double-throw switch (SPDT) S1 is connected with an input end of the second rectifier bridge by the 21 resistance R 21, the 22 resistance R 22 successively; Another stationary contact of the first single-pole double-throw switch (SPDT) S1 is connected with an input end of the 3rd rectifier bridge by the 31 resistance R 31, the 32 resistance R 32 successively; The moving contact of the second single-pole double-throw switch (SPDT) S2 is connected with another input end of the second rectifier bridge and another input end of the 3rd rectifier bridge respectively; Two stationary contacts of the second single-pole double-throw switch (SPDT) S2 are connected with the 3rd test pencil PE with the second test pencil N respectively;
The collector of the 21 triode Q21 is connected with the positive output end of the second rectifier bridge; The emitter of the 21 triode Q21 is connected with the negative output terminal of the second rectifier bridge by the 22 capacitor C 22; The base stage of the 21 triode Q21 is connected with the positive output end of the second rectifier bridge by the 25 resistance R 25, the 23 resistance R 23 successively, and the base stage of the 21 triode Q21 is connected with the negative output terminal of the second rectifier bridge by the 25 resistance R 25, the 24 resistance R 24 successively; The negative electrode of the 25 voltage stabilizing diode D25 is connected with the positive output end of the second rectifier bridge; The anode of the 25 voltage stabilizing diode D25 is connected with the negative output terminal of the second rectifier bridge; The anode of the 26 light emitting diode D26 is connected with the positive output end of the second rectifier bridge; The negative electrode of the 26 light emitting diode D26 is connected with the negative output terminal of the second rectifier bridge; The two ends of the 21 capacitor C 21 are connected with the two ends of the 21 resistance R 21 respectively;
The collector of the 31 triode Q31 is connected with the positive output end of the 3rd rectifier bridge; The emitter of the 31 triode Q31 is connected with the negative output terminal of the 3rd rectifier bridge by the 32 capacitor C 32; The base stage of the 31 triode Q31 is connected with the positive output end of the 3rd rectifier bridge by the 35 resistance R 35, the 33 resistance R 33 successively, and the base stage of the 31 triode Q31 is connected with the negative output terminal of the 3rd rectifier bridge by the 35 resistance R 35, the 34 resistance R 34 successively; The negative electrode of the 35 voltage stabilizing diode D35 is connected with the positive output end of the 3rd rectifier bridge; The anode of the 35 voltage stabilizing diode D35 is connected with the negative output terminal of the 3rd rectifier bridge; The anode of the 36 light emitting diode D36 is connected with the positive output end of the 3rd rectifier bridge; The negative electrode of the 36 light emitting diode D36 is connected with the negative output terminal of the 3rd rectifier bridge; The two ends of the 31 capacitor C 31 are connected with the two ends of the 31 resistance R 31 respectively.

Claims (1)

1. a multifunctional grounded detector, is characterized in that: comprise 15mA electrical apparatus release, 10mA controller and 20mA controller;
described 15mA electrical apparatus release comprises the first test pencil (L), the second test pencil (N), the 3rd test pencil (PE), zero sequence current mutual inductor (ZCT), the first rectifier bridge by 11-Di, 14 diodes (D11-D14) formation, IC54123 residual current circuit breaker (T), controllable silicon (SCR), tripping mechanism, voltage dependent resistor (VDR) (R11), 12-Di, 14 resistance (R12-R14), pull-up resistor (RL), 11-Di, 16 electric capacity (C11-C16), keyswitch (SW-PB), and the first-the second single-pole double-throw switch (SPDT) (S1-S2),
Described 10mA controller comprises the second rectifier bridge, the 21 triode (Q21), the 21-the 25 resistance (R21-R25), the 21-the 22 electric capacity (C21-C22), the 25 voltage stabilizing diode (D25) and the 26 light emitting diode (D26) that is made of the 21-the 24 diode (D21-D24);
Described 20mA controller comprises the 3rd rectifier bridge, the 31 triode (Q31), 31-Di, 35 resistance (R31-R35), 31-Di, 33 electric capacity (C31-C33), the 35 voltage stabilizing diode (D35) and the 36 light emitting diode (D36) that is made of 31-Di, 34 diodes (D31-D34);
The annular core of zero sequence current mutual inductor (ZCT) is sheathed on the first test pencil (L) and the second test pencil (N); One end of the primary winding of zero sequence current mutual inductor (ZCT) is connected with the first test pencil (L) by keyswitch (SW-PB); The other end of the primary winding of zero sequence current mutual inductor (ZCT) is connected with the second test pencil (N) by the 14 resistance (R14); An input end of the first rectifier bridge is connected with the first test pencil (L) by the coil (L1) of tripping mechanism; Another input end of the first rectifier bridge is connected with the second test pencil (N); The first pin of IC54123 residual current circuit breaker (T) is connected with an end of the secondary coil of zero sequence current mutual inductor (ZCT), and the first pin of IC54123 residual current circuit breaker (T) is connected with the negative output terminal of the first rectifier bridge by the 15 electric capacity (C15); The second pin of IC54123 residual current circuit breaker (T) is connected with the other end of the secondary coil of zero sequence current mutual inductor (ZCT) by the 13 resistance (R13); The 3rd pin of IC54123 residual current circuit breaker (T) is connected with the negative output terminal of the first rectifier bridge; The 4th pin of IC54123 residual current circuit breaker (T) is connected with the negative output terminal of the first rectifier bridge by the 11 electric capacity (C11); The 5th pin of IC54123 residual current circuit breaker (T) is connected with the 4th pin of IC54123 residual current circuit breaker (T); The 6th pin of IC54123 residual current circuit breaker (T) is connected with the control utmost point of controllable silicon (SCR) by the 13 electric capacity (C13); The 7th pin of IC54123 residual current circuit breaker (T) is connected with the control utmost point of controllable silicon (SCR); The 8th pin of IC54123 residual current circuit breaker (T) is connected with the positive output end of the first rectifier bridge by the 12 resistance (R12), and the 8th pin of IC54123 residual current circuit breaker (T) is connected with the negative output terminal of the first rectifier bridge by the 14 electric capacity (C14); The anode of controllable silicon (SCR) is connected with the positive output end of the first rectifier bridge; The negative electrode of controllable silicon (SCR) is connected with the negative output terminal of the first rectifier bridge; The control utmost point of controllable silicon (SCR) is connected with the negative output terminal of the first rectifier bridge by the 12 electric capacity (C12); The two ends of voltage dependent resistor (VDR) (R11) respectively with the first test pencil (L) be connected test pencil (N) and be connected; The two ends of pull-up resistor (RL) are connected with the two ends of the secondary coil of zero sequence current mutual inductor (ZCT) respectively; The two ends of the 16 electric capacity (C16) are connected with the two ends of the secondary coil of zero sequence current mutual inductor (ZCT) respectively; The switch of tripping mechanism (S) is serially connected with on the first test pencil (L) and the second test pencil (N); The moving contact of the first single-pole double-throw switch (SPDT) (S1) is connected with the first test pencil (L); A stationary contact of the first single-pole double-throw switch (SPDT) (S1) is connected with an input end of the second rectifier bridge by the 21 resistance (R21), the 22 resistance (R22) successively; Another stationary contact of the first single-pole double-throw switch (SPDT) (S1) is connected with an input end of the 3rd rectifier bridge by the 31 resistance (R31), the 32 resistance (R32) successively; The moving contact of the second single-pole double-throw switch (SPDT) (S2) is connected with another input end of the second rectifier bridge and another input end of the 3rd rectifier bridge respectively; Two stationary contacts of the second single-pole double-throw switch (SPDT) (S2) are connected with the 3rd test pencil (PE) with the second test pencil (N) respectively;
The collector of the 21 triode (Q21) is connected with the positive output end of the second rectifier bridge; The emitter of the 21 triode (Q21) is connected with the negative output terminal of the second rectifier bridge by the 22 electric capacity (C22); The base stage of the 21 triode (Q21) is connected with the positive output end of the second rectifier bridge by the 25 resistance (R25), the 23 resistance (R23) successively, and the base stage of the 21 triode (Q21) is connected with the negative output terminal of the second rectifier bridge by the 25 resistance (R25), the 24 resistance (R24) successively; The negative electrode of the 25 voltage stabilizing diode (D25) is connected with the positive output end of the second rectifier bridge; The anode of the 25 voltage stabilizing diode (D25) is connected with the negative output terminal of the second rectifier bridge; The anode of the 26 light emitting diode (D26) is connected with the positive output end of the second rectifier bridge; The negative electrode of the 26 light emitting diode (D26) is connected with the negative output terminal of the second rectifier bridge; The two ends of the 21 electric capacity (C21) are connected with the two ends of the 21 resistance (R21) respectively;
The collector of the 31 triode (Q31) is connected with the positive output end of the 3rd rectifier bridge; The emitter of the 31 triode (Q31) is connected with the negative output terminal of the 3rd rectifier bridge by the 32 electric capacity (C32); The base stage of the 31 triode (Q31) is connected with the positive output end of the 3rd rectifier bridge by the 35 resistance (R35), the 33 resistance (R33) successively, and the base stage of the 31 triode (Q31) is connected with the negative output terminal of the 3rd rectifier bridge by the 35 resistance (R35), the 34 resistance (R34) successively; The negative electrode of the 35 voltage stabilizing diode (D35) is connected with the positive output end of the 3rd rectifier bridge; The anode of the 35 voltage stabilizing diode (D35) is connected with the negative output terminal of the 3rd rectifier bridge; The anode of the 36 light emitting diode (D36) is connected with the positive output end of the 3rd rectifier bridge; The negative electrode of the 36 light emitting diode (D36) is connected with the negative output terminal of the 3rd rectifier bridge; The two ends of the 31 electric capacity (C31) are connected with the two ends of the 31 resistance (R31) respectively.
CN 201320333053 2013-06-09 2013-06-09 Multifunctional grounding detector Expired - Fee Related CN203275565U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614629A (en) * 2015-01-19 2015-05-13 国家电网公司 Grounding detection discrimination circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614629A (en) * 2015-01-19 2015-05-13 国家电网公司 Grounding detection discrimination circuit

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