CN219145012U - Lightning protection type leakage protector circuit - Google Patents
Lightning protection type leakage protector circuit Download PDFInfo
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- CN219145012U CN219145012U CN202223602730.8U CN202223602730U CN219145012U CN 219145012 U CN219145012 U CN 219145012U CN 202223602730 U CN202223602730 U CN 202223602730U CN 219145012 U CN219145012 U CN 219145012U
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Abstract
The utility model relates to a lightning protection type leakage protector circuit which comprises a switch main loop module, a checking module, a control loop module and a tripping module, wherein the output end of the checking module is connected with the input end of the switch main loop module, the output end of the switch main loop module is connected with the input end of the control loop module, the output end of the control loop module is connected with the input end of the tripping module, the output end of the tripping module is connected with the input end of the switch main loop module, the lightning protection type leakage protector circuit further comprises a lightning protection module, the lightning protection module is connected on the switch main loop module, the lightning protection module comprises a piezoresistor RV1, a piezoresistor RV3 and a discharge tube GGD, the piezoresistor RV3 is connected with the discharge tube GGD in series, one end of the discharge tube GGD is grounded, one end of the piezoresistor RV1 is connected with a power supply L phase, and the other end of the piezoresistor RV1 and one end of the piezoresistor RV3 are both connected with a power supply N phase. The lightning protection type leakage protector circuit has the advantages of comprehensive protection and safe and stable performance.
Description
Technical Field
The utility model relates to the technical field of leakage protectors, in particular to a lightning protection type leakage protector circuit.
Background
The leakage protector is an electric safety device, mainly used for protecting the life of life when the equipment has leakage fault and has fatal danger. The existing leakage protector is used for overload and short-circuit protection in a circuit, and when leakage and electric shock occur and the current reaches the action current value limited by the protector, the current can immediately act within the limited time, and the power supply is automatically disconnected for protection. The existing leakage protector lacks a lightning protection function, and when lightning shock occurs in a circuit, the normal operation of a circuit of the leakage protector is affected, so that the leakage protector has the defects of incomplete protection and unsafe and stable performance.
Disclosure of Invention
In view of the above, the present utility model aims to provide a lightning protection type leakage protector circuit with comprehensive protection, safe and stable performance.
In order to achieve the above purpose, the lightning protection type leakage protector circuit comprises a switch main loop module, a checking module, a control loop module and a tripping module, wherein the output end of the checking module is connected with the input end of the switch main loop module, the output end of the switch main loop module is connected with the input end of the control loop module, the output end of the control loop module is connected with the input end of the tripping module, the lightning protection type leakage protector circuit further comprises a lightning protection module, the lightning protection module is connected to the switch main loop module, the lightning protection module comprises a voltage dependent resistor RV1, a voltage dependent resistor RV3 and a discharge tube GGD, the voltage dependent resistor RV3 is connected with the discharge tube GGD in series, one end of the discharge tube GGD is grounded, one end of the voltage dependent resistor RV1 is connected with a power supply L phase, and the other end of the voltage dependent resistor RV1 and one end of the voltage dependent resistor RV3 are both connected with a power supply N phase.
Compared with the prior art, the circuit has the beneficial effects that by additionally arranging the lightning protection module, the normal operation of the leakage protector circuit is not affected when lightning surge is suffered in a circuit, the piezoresistor RV1 is used for lightning absorption protection of the power source L phase and the power source N phase, the piezoresistor RV3 and the discharge tube GGD are connected in series to form the lightning absorption protection of the power source N phase and the PE phase, and the advantages of comprehensive protection and safe and stable performance are realized.
The utility model discloses further set up to switch main loop module and include earth leakage protection circuit breaker RCBO, current transformer CT, the input of power L looks, the input of power N looks are connected respectively to earth leakage protection circuit breaker RCBO's one end, the other end of earth leakage protection circuit breaker RCBO passes current transformer CT and power L looks's output, the output of power N looks is connected respectively, current transformer CT includes primary coil N1, secondary coil N2.
The circuit is used for switching off and switching on the load circuit and switching off the fault circuit, so that the accident expansion is prevented, and the safe operation is ensured.
The utility model discloses further set up to the inspection module and include resistance R2, test button SB1, the one end of test button SB1 is connected to resistance R2's one end, power N looks is connected to test button's the other end, power L looks is connected to resistance R2's the other end.
The circuit presses the test button SB1, and the circuit generates leakage current for checking whether the leakage protector circuit is in a normal working state.
The utility model is further arranged as a control loop module comprising resistors R3-R7, capacitors C1-C8, a thyristor SCR1, a rectifier bridge D1, a leakage chip U1 and a piezoresistor RV2, wherein the fourth pin end and the fifth pin end of the leakage chip U1 are respectively connected with one end of a capacitor C6, one end of a capacitor C5, one end of a capacitor C8, one end of a capacitor C2, one end of a capacitor C1, a cathode of a thyristor SCR1, one end of a piezoresistor RV2 and a V-end of the rectifier bridge D1, the second pin end of the leakage chip U1 is respectively connected with the other end of a capacitor C5, one end of a capacitor C3 and one end of a resistor R4, the other end of the resistor R4 is respectively connected with one end of a capacitor C4, one end of a resistor R3 and one end of a primary coil N1 of a current transformer CT of the switch main loop module, one end of the resistor R7 is respectively connected with the other end of the capacitor C4, the other end of the resistor R3 and the secondary coil N2 end of the current transformer CT of the switch main loop module, the other end of the resistor R7 is respectively connected with the other end of the capacitor C3, the other end of the capacitor C8 and the first pin end of the leakage chip U1, the sixth pin end of the leakage chip U1 is connected with one end of the capacitor C7, the seventh pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C7, the other end of the capacitor C2 and the gate electrode of the thyristor SCR1, the eighth pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C1 and one end of the resistor R6, the other end of the resistor R6 is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with the V+ end of the rectifier bridge D1, the other end of the piezoresistor RV2 and the anode of the thyristor SCR1, the AC-end of the rectifier bridge D1 is connected with the power N phase of the switch main loop module.
The utility model is further set up to the model of electric leakage chip U1 and is M54123.
The circuit is used for receiving and conveying leakage current, and when the received leakage current exceeds a preset value of the leakage chip U1, the thyristor SCR1 is controlled to be conducted, and the leakage current is conveyed to the tripping module.
The utility model discloses further set up to the tripping device and include tripping coil L1, tripping coil L1's one end connection switch main loop module's power L looks, tripping coil L1's the other end AC+ end of rectifier bridge D1 of connecting control loop module.
The tripping coil L1 of the circuit is used for leakage tripping, and when the leakage tripping acts, the transmission mechanism is driven to rapidly break the gate, and the main loop is disconnected, so that leakage protection is realized.
The utility model discloses still set up to including still throwing the back module, throw the back module and include switch S1, switch S1 'S one end connection switch main loop module' S current transformer CT 'S secondary coil N2 end, switch S1' S the other end connection control loop module 'S resistance R3' S the other end.
The switch S1 of the above circuit is closed to indicate that the leakage function is normal, and the switch S2 is opened to indicate that the leakage protection function is not present.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the present utility model.
Detailed Description
As shown in fig. 1, the embodiment of the utility model adopts a lightning protection type leakage protector circuit, which comprises a switch main loop module 1, a checking module 2, a control loop module 3 and a tripping module 4, wherein the output end of the checking module 2 is connected with the input end of the switch main loop module 1, the output end of the switch main loop module 1 is connected with the input end of the control loop module 3, the output end of the control loop module 3 is connected with the input end of the tripping module 4, the output end of the tripping module 4 is connected with the input end of the switch main loop module 1, the lightning protection type leakage protector circuit further comprises a lightning protection module 5, the lightning protection module 5 is connected on the switch main loop module 1, the lightning protection module 5 comprises a piezoresistor RV1, a piezoresistor RV3 and a discharge tube GGD, the piezoresistor RV3 is connected with the discharge tube GGD in series, one end of the discharge tube GGD is grounded, one end of the piezoresistor RV1 is connected with a power supply L phase, and the other end of the piezoresistor RV1 and one end of the piezoresistor RV3 are all connected with a power supply N phase.
The switch main loop module 1 comprises a leakage protection circuit breaker RCBO and a current transformer CT, one end of the leakage protection circuit breaker RCBO is respectively connected with the input end of a power supply L phase and the input end of a power supply N phase, the other end of the leakage protection circuit breaker RCBO passes through the current transformer CT to be respectively connected with the output end of the power supply L phase and the output end of the power supply N phase, and the current transformer CT comprises a primary coil N1 and a secondary coil N2.
The inspection module 2 comprises a resistor R2 and a test button SB1, wherein one end of the resistor R2 is connected with one end of the test button SB1, the other end of the test button is connected with a power N phase, and the other end of the resistor R2 is connected with a power L phase.
The control loop module 3 comprises resistors R3-R7, capacitors C1-C8, a thyristor SCR1, a rectifier bridge D1, a leakage chip U1 and a piezoresistor RV2, wherein the fourth pin end and the fifth pin end of the leakage chip U1 are respectively connected with one end of a capacitor C6, one end of a capacitor C5, one end of a capacitor C8, one end of a capacitor C2, one end of the capacitor C1, a cathode of the thyristor SCR1, one end of the piezoresistor RV2 and the V-end of the rectifier bridge D1, the second pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C5, one end of the resistor R4 is respectively connected with one end of the capacitor C4, one end of the resistor R3, one end of a primary coil N1 of a current transformer CT of the switch main loop module 1, one end of the resistor R7 is respectively connected with the other end of the capacitor C4, the other end of the resistor R3, one end of the secondary coil N2 of a current transformer CT of the switch main loop module 1, the other end of the resistor R7 is respectively connected with one end of the resistor C1, one end of the thyristor C1, one end of the other end of the resistor C1 is respectively connected with the other end of the resistor C1, one end of the resistor C1 is connected with the drain chip C1, one end of the other end of the thyristor C1 is connected with the resistor C1, one end of the other end of the resistor C1 is connected with the drain chip, one end of the resistor C1 is connected with the other end of the resistor C1, the other end of the resistor C1, and the other end of the resistor is connected with the other end of the resistor C1, and the resistor, and the other end of the resistor, and the other end of the resistor and the other end, and the other end and capacitor and 3, and the other end and, and.
In addition, the tripping module 4 includes a tripping coil L1, one end of the tripping coil L1 is connected with the power L phase of the switch main loop module 1, and the other end of the tripping coil L1 is connected with the ac+ end of the rectifier bridge D1 of the control loop module 3.
In addition, the switching module 6 is further included, the switching module 6 comprises a switch S1, one end of the switch S1 is connected with the end of a secondary coil N2 of a current transformer CT of the switch main loop module 1, and the other end of the switch S1 is connected with the other end of a resistor R3 of the control loop module 3.
In addition to the above embodiments, the present utility model may be further modified and varied in various ways, and the modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (7)
1. The lightning protection type leakage protector circuit comprises a switch main loop module, a checking module, a control loop module and a tripping module, wherein the output end of the checking module is connected with the input end of the switch main loop module, the output end of the switch main loop module is connected with the input end of the control loop module, the output end of the control loop module is connected with the input end of the tripping module, and the output end of the tripping module is connected with the input end of the switch main loop module.
2. The lightning protection earth leakage protector circuit of claim 1, wherein: the main circuit module of the switch comprises a leakage protection circuit breaker RCBO and a current transformer CT, wherein one end of the leakage protection circuit breaker RCBO is respectively connected with the input end of a power source L phase and the input end of a power source N phase, the other end of the leakage protection circuit breaker RCBO passes through the current transformer CT to be respectively connected with the output end of the power source L phase and the output end of the power source N phase, and the current transformer CT comprises a primary coil N1 and a secondary coil N2.
3. The lightning protection earth leakage protector circuit of claim 1 or 2, characterized in that: the test module comprises a resistor R2 and a test button SB1, wherein one end of the resistor R2 is connected with one end of the test button SB1, the other end of the test button is connected with a power N phase, and the other end of the resistor R2 is connected with a power L phase.
4. The lightning protection earth leakage protector circuit of claim 1 or 2, characterized in that: the control loop module comprises resistors R3-R7, capacitors C1-C8, a thyristor SCR1, a rectifier bridge D1, a leakage chip U1 and a piezoresistor RV2, wherein a fourth pin end and a fifth pin end of the leakage chip U1 are respectively connected with one end of the capacitor C6, one end of the capacitor C5, one end of the capacitor C8, one end of the capacitor C2, one end of the capacitor C1, a cathode of the thyristor SCR1, one end of the piezoresistor RV2 and a V-end of the rectifier bridge D1, a second pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C5, one end of the capacitor C3 and one end of the resistor R4, the other end of the resistor R4 is respectively connected with one end of the capacitor C4, one end of the resistor R3 and a primary coil N1 end of a current transformer CT of the switch main loop module, one end of the resistor R7 is respectively connected with the other end of the capacitor C4, the other end of the resistor R3 and the secondary coil N2 end of the current transformer CT of the switch main loop module, the other end of the resistor R7 is respectively connected with the other end of the capacitor C3, the other end of the capacitor C8 and the first pin end of the leakage chip U1, the sixth pin end of the leakage chip U1 is connected with one end of the capacitor C7, the seventh pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C7, the other end of the capacitor C2 and the gate electrode of the thyristor SCR1, the eighth pin end of the leakage chip U1 is respectively connected with the other end of the capacitor C1 and one end of the resistor R6, the other end of the resistor R6 is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with the V+ end of the rectifier bridge D1, the other end of the piezoresistor RV2 and the anode of the thyristor SCR1, the AC-end of the rectifier bridge D1 is connected with the power N phase of the switch main loop module.
5. The lightning protection type earth leakage protector circuit of claim 4, further comprising: the tripping module comprises a tripping coil L1, one end of the tripping coil L1 is connected with a power supply L phase of the switch main loop module, and the other end of the tripping coil L1 is connected with an AC+ end of a rectifier bridge D1 of the control loop module.
6. The lightning protection type earth leakage protector circuit of claim 4, further comprising: the switching device comprises a main loop module, and is characterized by further comprising a switching module, wherein the switching module comprises a switch S1, one end of the switch S1 is connected with the secondary coil N2 end of a current transformer CT of the main loop module, and the other end of the switch S1 is connected with the other end of a resistor R3 of the control loop module.
7. The lightning protection type earth leakage protector circuit of claim 4, further comprising: the model of the leakage chip U1 is M54123.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223602730.8U CN219145012U (en) | 2022-12-27 | 2022-12-27 | Lightning protection type leakage protector circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223602730.8U CN219145012U (en) | 2022-12-27 | 2022-12-27 | Lightning protection type leakage protector circuit |
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| CN219145012U true CN219145012U (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223602730.8U Active CN219145012U (en) | 2022-12-27 | 2022-12-27 | Lightning protection type leakage protector circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117410951A (en) * | 2023-10-31 | 2024-01-16 | 云南电力试验研究院(集团)有限公司 | Lightning protection device and method for residual current circuit breaker |
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2022
- 2022-12-27 CN CN202223602730.8U patent/CN219145012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117410951A (en) * | 2023-10-31 | 2024-01-16 | 云南电力试验研究院(集团)有限公司 | Lightning protection device and method for residual current circuit breaker |
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