CN220710218U - Electronic residual current molded case circuit breaker - Google Patents
Electronic residual current molded case circuit breaker Download PDFInfo
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- CN220710218U CN220710218U CN202322326552.9U CN202322326552U CN220710218U CN 220710218 U CN220710218 U CN 220710218U CN 202322326552 U CN202322326552 U CN 202322326552U CN 220710218 U CN220710218 U CN 220710218U
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- 239000000523 sample Substances 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to an electronic residual current molded case circuit breaker, which comprises a base, a middle cover, a face cover, an operating mechanism, three moving contacts, three fixed contacts, three arc-extinguishing chambers, an intelligent control protection module, three conductive wiring boards, an incoming zero-phase wiring board and an outgoing zero-phase wiring board, wherein the intelligent control protection module comprises an intelligent control wiring board, three metering current transformers, a zero-sequence transformer, an A-phase conductive board, a B-phase conductive board and a C-phase conductive board, the other ends of the A-phase conductive board, the B-phase conductive board and the C-phase conductive board respectively penetrate through the three metering current transformers and the zero-sequence transformer and are respectively connected to the three conductive wiring boards, three temperature sensing probes which are respectively contacted with the three fixed contacts are respectively arranged on the base, and signal wires are respectively connected between the three temperature sensing probes and the intelligent control wiring board. The utility model has the advantages of simple structure, stable and reliable performance, high assembly efficiency, small volume and modularization.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to an electronic residual current molded case circuit breaker.
Background
With the deep development of intelligent power grid technology transformation, the requirements of people on electricity utilization safety and intelligent control electricity utilization are becoming stricter, and on one hand, a plastic-case circuit breaker with residual current protection can rapidly cut off a power supply when an electric leakage accident occurs, and the personal safety and the equipment safety of an electricity utilization terminal are directly protected; on the other hand, the leakage current caused by aging or insulation damage of the circuit is reacted, and the leakage current can be used for monitoring accidents such as electric fire to a certain extent, so that the leakage current is increasingly widely applied. Along with the intelligent rapid development of circuit breakers, the existing molded case circuit breakers with residual current protection have more and more functions (current overload, short circuit, overvoltage and undervoltage, phase loss, residual current, overtemperature alarm and other protection functions), and the internal electric components (a transformer, a leakage tripping device, a circuit board and the like) of the circuit breakers are all installed in a shell in a sealing manner, and because the circuit breakers are limited by the size of the internal space of the molded case circuit breakers with residual current, the wiring of the electric components is disordered, the circuit breakers occupy larger internal space, and the electric components cannot be integrated into a modularized structural design, are complex to assemble and cannot meet the intelligent use requirements of the circuit breakers.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the electronic residual current molded case circuit breaker which has the advantages of simple structure, stable and reliable performance, high assembly efficiency, small volume and modularization.
In order to achieve the above purpose, the utility model adopts an electronic residual current molded case circuit breaker, which comprises a base, a middle cover arranged on the base, a face cover arranged on the middle cover, an operating mechanism arranged in the base, three moving contacts arranged in linkage with the operating mechanism, three static contacts arranged in the base and matched with the three moving contacts, three arc extinguishing chambers respectively arranged on the three static contacts, an intelligent control protection module, three conductive wiring boards arranged on the base, an incoming zero-phase wiring board and an outgoing zero-phase wiring board respectively arranged on the base, wherein the intelligent control protection module comprises three metering current transformers arranged in the middle cover and electrically connected with the intelligent control wiring board, a zero-sequence transformer arranged in the base and electrically connected with the intelligent control wiring board, an A-phase conductive board, a B-phase conductive board and a C-phase conductive board, wherein one end of the A-phase conductive board and one end of the three moving contacts are respectively connected with a soft connection, one end of the B-phase conductive board and one end of the three conductive probes respectively penetrates through the three zero-sequence current transformers respectively arranged on the three conductive probes, and the three zero-sequence current transformers are respectively connected with the three zero-sequence current transformers respectively arranged on the base.
The electronic molded case circuit breaker has the beneficial effects that the three temperature sensor probes can monitor the temperature of the three fixed contacts, and the temperature sensor probes can send collected temperature signals to the intelligent control circuit board, so that the overtemperature alarm function of the electronic molded case circuit breaker is realized, the signal wires are arranged between the base and the bottom plate, and the wiring is more neat. The intelligent control protection module adopts modularized structural design to the modularization assembly of intelligent control protection module and base of being convenient for, assembly efficiency is higher, is provided with measurement current transformer, zero sequence transformer in the base, thereby can realize this electronic type residual current moulded case circuit breaker's measurement, earth leakage protection function, and intelligent control circuit board sets up in well lid, and intelligent control circuit board and measurement current transformer, zero sequence transformer set up respectively in independent cavity, and the assembly is more convenient, can avoid the mutual interference. Therefore, the electronic residual current molded case circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency, small volume and modularization.
Particularly, a switch-off and switch-on monitoring micro switch matched with a rotating shaft of the operating mechanism is arranged in the middle cover, and a wire is connected between the micro switch and the intelligent control circuit board. The micro switch can monitor the working position of the rotating shaft of the operating mechanism, so that the opening and closing indication of the electronic residual current molded case circuit breaker is realized.
Particularly, the base on can supply the wiring groove that signal wire passed, the base on be provided with the bottom plate of shroud on the wiring groove, signal wire one end pass wiring groove, base, well lid in proper order and connect on intelligent control circuit board. The signal conductor is arranged between the base and the bottom plate, so that the assembly of the conductor, the temperature sensor probe and the base is convenient, and the assembly efficiency is higher.
Particularly, the A-phase guide plate is provided with a U-shaped A-phase bending part which is inserted in the zero sequence transformer, the C-phase guide plate is provided with a U-shaped C-phase bending part which is inserted in the zero sequence transformer, the bending directions of the A-phase bending part and the C-phase bending part are opposite, the B-phase guide plate is in a straight plate shape, and the B-phase guide plate is positioned between the A-phase bending part and the C-phase bending part. The A phase bending part and the C phase bending part adopt U-shaped structural design, so that the space occupied by the A phase conducting plate, the B phase conducting plate and the C phase conducting plate in the base can be reduced, the insulation distance between the B phase conducting plate and the A phase conducting plate and between the B phase conducting plate and the C phase conducting plate can be ensured, and the working reliability of the electronic residual current molded case circuit breaker can be improved.
Particularly, insulating sleeves are wrapped on the A-phase conducting plate, the B-phase conducting plate and the C-phase conducting plate. The insulating sleeve can enhance the insulating performance among the A-phase conducting plate, the B-phase conducting plate and the C-phase conducting plate, and is beneficial to improving the safety performance of the electronic residual current molded case circuit breaker.
Particularly, the intelligent control circuit board on be provided with function operating button, super temperature warning pilot lamp, operation pilot lamp, electric leakage fault pilot lamp, the overload pilot lamp that exposes outside the face lid respectively, the face cover on be provided with the liquid crystal display who is connected with intelligent control circuit board electricity. The overtemperature alarm indicator lamp, the operation indicator lamp, the electric leakage fault indicator lamp and the overload indicator lamp can realize overtemperature alarm indication, working state indication, electric leakage fault indication and overload indication functions, so that the overtemperature alarm indicator lamp is convenient for users to use and has higher safety.
Drawings
Fig. 1 is a front view of an embodiment of the present utility model.
Fig. 2 is an internal structural diagram of an embodiment of the present utility model.
Fig. 3 is a cross-sectional view of an embodiment of the present utility model.
Description of the embodiments
As shown in fig. 1 to 3, the embodiment of the utility model is an electronic residual current molded case circuit breaker, which comprises a base 10, a middle cover 11 arranged on the base 10, a face cover 12 arranged on the middle cover 11, an operating mechanism 13 arranged in the base 10, three movable contacts 14 arranged in linkage with the operating mechanism 13, three fixed contacts 15 arranged in the base 10 and matched with the three movable contacts 14, three arc extinguishing chambers 16 respectively arranged on the three fixed contacts 14, an intelligent control protection module 20, three conductive wiring boards 17 arranged on the base 10, an incoming line zero-phase wiring board 18 and an outgoing line zero-phase wiring board 19 respectively arranged on the base 10, wherein the intelligent control protection module 20 comprises an intelligent control circuit board 21 arranged in the middle cover 11, three metering current transformers 22 arranged in the base 10 and electrically connected with the intelligent control circuit board 21, zero-sequence transformers 23, an a phase conductive board 24, a phase conductive board 25 respectively arranged in the base 10 and electrically connected with the three movable contacts 14, a phase conductive board B, a phase conductive board 26 respectively connected with the three conductive wiring boards 24 and the three conductive wiring boards 25 respectively arranged on the base 10, a zero-phase conductive wiring board 25 and the three phase conductive wiring boards 24 respectively connected with the three conductive wiring boards 25 and the three phase conductive wiring boards 25 respectively connected with the other ends of the three conductive wiring boards 28 through the zero-phase conductive wiring boards 25 and the zero-phase conductive wiring boards respectively, signal wires 30 are respectively connected between the three temperature sensing probes 29 and the intelligent control circuit board 21. The middle cover 11 is internally provided with a switch-on/off monitoring micro switch 31 matched with a rotating shaft of the operating mechanism 13, and a lead 32 is connected between the micro switch 31 and the intelligent control circuit board 21. The micro switch can monitor the working position of the rotating shaft of the operating mechanism, so that the opening and closing indication of the electronic residual current molded case circuit breaker is realized. The base 10 is provided with a wiring groove 101 through which the signal wire 30 can pass, the base 10 is provided with a bottom plate 102 covered on the wiring groove 101, and one end of the signal wire 30 sequentially passes through the wiring groove 101, the base 10 and the middle cover 11 and is connected to the intelligent control circuit board 21. The signal conductor is arranged between the base and the bottom plate, so that the assembly of the conductor, the temperature sensor probe and the base is convenient, and the assembly efficiency is higher.
As shown in fig. 2, the a-phase guide plate 24 has a U-shaped a-phase bending portion 241 inserted in the zero-sequence transformer 23, the C-phase conductive plate 26 has a U-shaped C-phase bending portion 261 inserted in the zero-sequence transformer 23, the a-phase bending portion 241 and the C-phase bending portion 261 are bent in opposite directions, the B-phase conductive plate 25 is in a straight plate shape, and the B-phase conductive plate 25 is located between the a-phase bending portion 241 and the C-phase bending portion 261. The A phase bending part and the C phase bending part adopt U-shaped structural design, so that the space occupied by the A phase conducting plate, the B phase conducting plate and the C phase conducting plate in the base can be reduced, the insulation distance between the B phase conducting plate and the A phase conducting plate and between the B phase conducting plate and the C phase conducting plate can be ensured, and the working reliability of the electronic residual current molded case circuit breaker can be improved. The A phase conductive plate 24, the B phase conductive plate 25 and the C phase conductive plate 26 are all wrapped with insulating sleeves 200. The insulating sleeve can enhance the insulating performance among the A-phase conducting plate, the B-phase conducting plate and the C-phase conducting plate, and is beneficial to improving the safety performance of the electronic residual current molded case circuit breaker.
As shown in fig. 1, the intelligent control circuit board 21 is respectively provided with a function operation button 211, an overtemperature alarm indicator lamp 212, an operation indicator lamp 213, a leakage fault indicator lamp 214 and an overload indicator lamp 215 which are exposed out of the panel cover 12, and the panel cover 12 is provided with a liquid crystal display 216 which is electrically connected with the intelligent control circuit board 21. The overtemperature alarm indicator lamp, the operation indicator lamp, the electric leakage fault indicator lamp and the overload indicator lamp can realize overtemperature alarm indication, working state indication, electric leakage fault indication and overload indication functions, so that the overtemperature alarm indicator lamp is convenient for users to use and has higher safety.
The temperature monitoring can be carried out to three static contacts by three temperature sensor probes, and the temperature sensor probes can send collected temperature signals to the intelligent control circuit board, so that the overtemperature alarm function of the electronic molded case circuit breaker is realized, and signal wires are arranged between the base and the bottom plate, so that wiring is more neat. The intelligent control protection module adopts modularized structural design to the modularization assembly of intelligent control protection module and base of being convenient for, assembly efficiency is higher, is provided with measurement current transformer, zero sequence transformer in the base, thereby can realize this electronic type residual current moulded case circuit breaker's measurement, earth leakage protection function, and intelligent control circuit board sets up in well lid, and intelligent control circuit board and measurement current transformer, zero sequence transformer set up respectively in independent cavity, and the assembly is more convenient, can avoid the mutual interference. Therefore, the electronic residual current molded case circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency, small volume and modularization.
Claims (6)
1. The utility model provides an electronic type residual current moulded case circuit breaker, the on-line screen storage device comprises a base, the well lid of setting on the base, the face lid of setting on well lid, the operating device who sets up in the base, three moving contact that sets up with operating device linkage, set up in the base and with three moving contact matched with three stationary contact, set up three explosion chamber on three stationary contact respectively, intelligent control protection module, set up three conductive wiring board on the base, set up the zero phase line board of inlet wire on the base respectively and be qualified for the next round of competitions zero phase line board, its characterized in that: the intelligent control protection module comprises an intelligent control circuit board arranged in a middle cover, three metering current transformers arranged in a base and electrically connected with the intelligent control circuit board, a zero sequence transformer arranged in the base and electrically connected with the intelligent control circuit board, an A-phase conducting plate, a B-phase conducting plate and a C-phase conducting plate, wherein one end of the A-phase conducting plate, one end of the B-phase conducting plate and one end of the C-phase conducting plate are respectively connected with three movable contacts in a soft connection mode, the other ends of the A-phase conducting plate, the B-phase conducting plate and the C-phase conducting plate respectively penetrate through the three metering current transformers, the zero sequence transformer and the three conductive wiring boards and are respectively connected with the three conductive wiring boards, a power wire is arranged on the zero-phase wiring board, one end of the power wire penetrates through the zero sequence transformer and is connected with the zero-phase wiring board, three temperature sensing probes which are respectively contacted with the three fixed contacts are respectively arranged on the base, and the three temperature sensing probes and the intelligent control circuit board are respectively connected with signal wires.
2. The electronic residual current molded case circuit breaker according to claim 1, wherein: the middle cover is internally provided with a switching-on/off monitoring micro switch matched with a rotating shaft of the operating mechanism, and a wire is connected between the micro switch and the intelligent control circuit board.
3. The electronic residual current molded case circuit breaker according to claim 1 or 2, characterized in that: the base on can supply the wiring groove that signal wire passed, the base on be provided with the bottom plate of shroud on the wiring groove, signal wire one end pass wiring groove, base, well lid in proper order and connect on intelligent control circuit board.
4. The electronic residual current molded case circuit breaker according to claim 1 or 2, characterized in that: the A-phase guide plate is provided with a U-shaped A-phase bending part which is inserted in the zero sequence transformer, the C-phase guide plate is provided with a U-shaped C-phase bending part which is inserted in the zero sequence transformer, the A-phase bending part and the C-phase bending part are opposite in bending direction, the B-phase guide plate is in a straight plate shape, and the B-phase guide plate is positioned between the A-phase bending part and the C-phase bending part.
5. The electronic residual current molded case circuit breaker according to claim 4, wherein: the A phase conducting plate, the B phase conducting plate and the C phase conducting plate are all wrapped with insulating sleeves.
6. The electronic residual current molded case circuit breaker according to claim 1 or 2, characterized in that: the intelligent control circuit board on be provided with function operating button, super temperature warning pilot lamp, operation pilot lamp, electric leakage fault pilot lamp, overload pilot lamp that expose outside the face lid respectively, the face cover on be provided with the liquid crystal display who is connected with intelligent control circuit board electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322326552.9U CN220710218U (en) | 2023-08-29 | 2023-08-29 | Electronic residual current molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322326552.9U CN220710218U (en) | 2023-08-29 | 2023-08-29 | Electronic residual current molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710218U true CN220710218U (en) | 2024-04-02 |
Family
ID=90438234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322326552.9U Active CN220710218U (en) | 2023-08-29 | 2023-08-29 | Electronic residual current molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220710218U (en) |
-
2023
- 2023-08-29 CN CN202322326552.9U patent/CN220710218U/en active Active
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