CN217061935U - Electric leakage protection module of molded case circuit breaker - Google Patents
Electric leakage protection module of molded case circuit breaker Download PDFInfo
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- CN217061935U CN217061935U CN202122433549.8U CN202122433549U CN217061935U CN 217061935 U CN217061935 U CN 217061935U CN 202122433549 U CN202122433549 U CN 202122433549U CN 217061935 U CN217061935 U CN 217061935U
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- leakage protection
- base
- circuit board
- conducting plate
- zero sequence
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Abstract
The utility model relates to an earth leakage protection module of a plastic shell breaker, a shell and an earth leakage protection component arranged in the shell, the shell comprises a base and an upper cover arranged on the base, the leakage protection assembly comprises three conductive plates arranged in the base, N-phase conductive plates arranged in the base, a zero sequence transformer, three insulating pieces arranged on the three conductive plates, and a leakage protection circuit board group arranged in the base above the corresponding zero sequence transformer, the zero sequence transformer is sleeved on the N-phase conductive plate and the three conductive plates, the leakage protection circuit board group comprises a box body arranged in the base and a leakage protection circuit board arranged in the box body and electrically connected with the zero sequence transformer, the upper cover is provided with an accommodating groove, and a circuit board is arranged in the accommodating groove, and a cover plate covered on the circuit board is arranged in the accommodating groove. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to moulded case circuit breaker's earth leakage protection module.
Background
At present, the electronic molded case circuit breaker is used for infrequent conversion and motor protection in a circuit with 50Hz alternating current, rated working voltage to 400V and rated current to 400A. The circuit breaker has the functions of overload long delay inverse time limit, short circuit short delay fixed time limit, short circuit instant and under-voltage protection, and can protect circuits and power supply equipment from being damaged. The leakage protection component of the existing electronic molded case circuit breaker is of a built-in structure, so that the leakage protection component occupies a larger space in the shell of the circuit breaker, an external leakage protection module appears on the market, and the leakage protection module can be assembled with the circuit breaker according to the requirements of users.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, assemble convenient moulded case circuit breaker's earth-leakage protection module.
In order to achieve the above purpose, the utility model adopts a leakage protection module of a plastic shell circuit breaker, a shell body, a leakage protection component arranged in the shell body, the shell comprises a base and an upper cover arranged on the base, the leakage protection assembly comprises three conductive plates arranged in the base, N-phase conductive plates arranged in the base, a zero sequence transformer, three insulating pieces arranged on the three conductive plates, and a leakage protection circuit board group arranged in the base above the corresponding zero sequence transformer, the zero sequence transformer is sleeved on the N-phase conductive plate and the three conductive plates, the leakage protection circuit board group comprises a box body arranged in the base and a leakage protection circuit board arranged in the box body and electrically connected with the zero sequence transformer, the upper cover is provided with an accommodating groove, and a circuit board is arranged in the accommodating groove, and a cover plate covered on the circuit board is arranged in the accommodating groove.
The beneficial effect of above-mentioned structure is: set up the earth leakage protection circuit board in the box body, and integrated modularization, thereby can realize earth leakage protection circuit board group's modularized assembly, and set up the earth leakage protection circuit board in the box body, structural configuration is more reasonable, the earth leakage protection circuit board can not receive the influence of other spare parts, and be provided with the insulating part on the three current conducting plate respectively, can increase the creepage distance between the three current conducting plate, the security is higher, thereby this moulded case circuit breaker's earth leakage protection module has simple structure, stable performance is reliable, the convenient advantage of assembly.
Particularly, the insulating part on correspond three current conducting plate punishment and be provided with three draw-in groove respectively, three draw-in groove block is on three current conducting plate, and constitutes the joint cooperation of insulating part and current conducting plate. The insulating part and the current conducting plate are connected in a clamping matching mode, so that the insulating part and the current conducting plate are convenient to assemble, and the assembly efficiency is higher.
Particularly, the box body on be provided with a plurality of inserted sheets, the base in correspond a plurality of inserted sheets department and be provided with a plurality of slots respectively, the inserted sheet alternate in the slot, and constitute the joint cooperation of box body and base. The box body is connected with the base in a clamping matching mode, so that the box body and the base are convenient to assemble, the assembly is more convenient, the modular assembly of the leakage protection circuit board group can be realized, and the assembly efficiency is higher.
Particularly, a U-shaped conducting strip is arranged on the N-phase conducting plate, the conducting strip is inserted in the zero sequence transformer, and an insulating isolator is arranged on the conducting strip. The U-shaped conducting strips are arranged on the N-phase conducting plates, so that the space of the zero sequence transformer occupied by the N-phase conducting plates can be reduced, and the size of the leakage protection assembly is reduced.
Particularly, the insulating isolation piece is provided with a clamping groove, and the clamping groove is clamped on the conducting strip and forms clamping matching of the insulating isolation piece and the conducting strip. The insulating isolator is connected with the conducting strip in a clamping matching mode, so that the insulating isolator is convenient to assemble with the conducting strip, and the assembly is more convenient.
Drawings
Fig. 1 is a perspective view of the embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a perspective view of an insulating member according to an embodiment of the present invention.
Fig. 4 is an assembly view of the insulating spacer and the N-phase conductive plate according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 3, an embodiment of the present invention is an earth leakage protection module of a molded case circuit breaker, comprising a housing 10, an earth leakage protection assembly 20 disposed in the housing 10, wherein the housing 10 comprises a base 11 and an upper cover 12 disposed on the base 11, the earth leakage protection assembly 20 comprises three conductive plates 21 disposed in the base 11, an N-phase conductive plate 22 disposed in the base 11, a zero sequence transformer 23, three insulating members 211 disposed on the three conductive plates 21, and an earth leakage protection circuit board group 24 disposed in the base 11 above the corresponding zero sequence transformer 23, the zero sequence transformer 23 is sleeved on the N-phase conductive plate 22 and the three conductive plates 21, the earth leakage protection circuit board group 24 comprises a box body 241 disposed in the base 11, an earth leakage protection circuit board 242 disposed in the box body 241 and electrically connected to the zero sequence transformer 23, the upper cover 12 is provided with an accommodating groove 121, and a circuit board 13 is arranged in the accommodating groove 121, and a cover plate 14 covering the circuit board 13 is arranged in the accommodating groove 121.
As shown in fig. 2, 3 and 4, three slots 2111 are respectively disposed on the insulating member 211 corresponding to the three conductive plates 21, and the three slots 2111 are engaged with the three conductive plates 21 to form a snap fit between the insulating member 211 and the conductive plates 21. The insulating part and the current conducting plate are connected in a clamping matching mode, so that the insulating part and the current conducting plate are convenient to assemble, and the assembly efficiency is higher. The box body 241 on be provided with a plurality of inserted sheets 2411, base 11 in correspond a plurality of inserted sheets 2411 department and be provided with a plurality of slots 111 respectively, inserted sheet 2411 alternate in slot 111, and constitute the joint cooperation of box body 241 and base 11. The box body is connected with the base in a clamping matching mode, so that the box body and the base are convenient to assemble, the assembly is more convenient, the modular assembly of the leakage protection circuit board group can be realized, and the assembly efficiency is higher. The N-phase conductive plate 22 is provided with a U-shaped conductive plate 221, the conductive plate 221 is inserted into the zero sequence transformer 23, and the conductive plate 221 is provided with an insulating spacer 222. The U-shaped conducting plate is arranged on the N-phase conducting plate, so that the space of the zero sequence transformer occupied by the N-phase conducting plate can be reduced, and the size of the leakage protection assembly is reduced. The insulating spacer 222 is provided with a clamping groove 2221, the clamping groove 2221 is clamped on the conducting strip 221, and the insulating spacer 222 is in clamping fit with the conducting strip 221. The insulating isolator is connected with the conducting strip in a clamping matching mode, so that the insulating isolator is convenient to assemble with the conducting strip, and the assembly is more convenient.
The leakage protection circuit board is arranged in the box body, and modularization is integrated, so that modular assembly of the leakage protection circuit board group can be realized, the leakage protection circuit board is arranged in the box body, the structural layout is more reasonable, the leakage protection circuit board cannot be influenced by other parts, the three current-conducting plates are respectively provided with the insulating parts, the creepage distance between the three current-conducting plates can be increased, the safety is higher, and the leakage protection module of the plastic case breaker has the advantages of simple structure, stable and reliable performance and convenience in assembly.
Claims (5)
1. The utility model provides a moulded case circuit breaker's earth leakage protection module, casing, the earth leakage protection subassembly of setting in the casing, the casing include the base, set up the upper cover on the base, its characterized in that: the earth leakage protection subassembly include three setting current conducting plate in the base, set up N looks current conducting plate, zero sequence transformer in the base, set up three insulating part on three current conducting plate, correspond zero sequence transformer's top department and set up the earth leakage protection circuit board group in the base, zero sequence transformer suit on N looks current conducting plate, three current conducting plate, earth leakage protection circuit board group including setting up box body in the base, setting in the box body and the earth leakage protection circuit board of being connected with the zero sequence transformer electricity, the upper cover be provided with the storage tank, and be provided with the circuit board in the storage tank, the storage tank in be provided with the apron of shroud on the circuit board.
2. A leakage protection module of a molded case circuit breaker according to claim 1, wherein: the insulator on correspond three current conducting plate punishment and be provided with three draw-in groove respectively, three draw-in groove block is on three current conducting plate, and constitutes the joint cooperation of insulator and current conducting plate.
3. A leakage protection module of a molded case circuit breaker according to claim 1 or 2, wherein: the box body on be provided with a plurality of inserted sheets, the base in correspond a plurality of inserted sheet departments and be provided with a plurality of slots respectively, the inserted sheet alternate in the slot, and constitute the joint cooperation of box body and base.
4. A leakage protection module of a molded case circuit breaker according to claim 1 or 2, wherein: the N-phase current conducting plate is provided with a U-shaped conducting plate which is inserted in the zero sequence transformer, and the conducting plate is provided with an insulating isolator.
5. A leakage protection module of a molded case circuit breaker according to claim 4, wherein: the insulating isolator on be provided with the joint groove, joint groove block on the conducting strip, and constitute the joint cooperation of insulating isolator and conducting strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433549.8U CN217061935U (en) | 2021-10-09 | 2021-10-09 | Electric leakage protection module of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433549.8U CN217061935U (en) | 2021-10-09 | 2021-10-09 | Electric leakage protection module of molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217061935U true CN217061935U (en) | 2022-07-26 |
Family
ID=82475701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122433549.8U Active CN217061935U (en) | 2021-10-09 | 2021-10-09 | Electric leakage protection module of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217061935U (en) |
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2021
- 2021-10-09 CN CN202122433549.8U patent/CN217061935U/en active Active
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