CN216528714U

CN216528714U - Modular automatic reclosing small residual current circuit breaker

Info

Publication number: CN216528714U
Application number: CN202123028984.9U
Authority: CN
Inventors: 孙泽凯; 孙斌朋; 唐庭; 陈绪军
Original assignee: Huanyu Hi Tech Co ltd
Current assignee: Huanyu Hi Tech Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-13
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to a modularized automatic reclosing small-sized leakage circuit breaker, which comprises a circuit breaker unit and an automatic reclosing device used for driving the circuit breaker unit to perform opening and closing actions, wherein a leakage protection module is arranged on one side of the circuit breaker unit, the leakage protection module comprises a terminal seat arranged on a shell of the circuit breaker unit, a cover plate arranged on the terminal seat, a plurality of wiring terminals respectively arranged in the terminal seat, a zero sequence transformer arranged in the terminal seat and a plurality of conductive copper bars respectively electrically connected with the circuit breaker unit, one ends of the conductive copper bars respectively penetrate through the zero sequence transformer and are respectively connected to the wiring terminals, and a lead is connected between the zero sequence transformer and an intelligent control circuit board of the automatic reclosing device. The utility model has the advantages of simple structure, stable and reliable performance, small volume, convenient assembly and low cost.

Description

Modular automatic reclosing small residual current circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a modular automatic reclosing miniature residual current circuit breaker.

Background

At present, small circuit breakers are widely used in low-voltage distribution networks, mainly in various places such as industrial, commercial, high-rise and residential houses, and can perform overcurrent protection and leakage protection on electric devices such as motors, distribution lines and lighting circuits. The traditional small circuit breaker needs manual operation to complete the opening and closing actions. With the development of intelligent power grids in China, on the premise of requiring safe operation of the power grids, the control of electrical appliances is more and more urgent to realize intellectualization. In order to cope with new situation changes, the existing miniature circuit breaker is provided with an automatic reclosing function. The automatic reclosing device of the miniature circuit breaker is an accessory used for a remote electric opening and closing circuit breaker, is directly matched with a prepayment electric energy meter for use, and can realize reclosing after payment. The existing automatic reclosing small residual current circuit breaker has the defects of unreasonable structural design, incapability of realizing modular assembly, complex assembly, low production efficiency and higher cost, and thus has the defects of complex structure, large volume, unreliable performance, inconvenient assembly and high cost.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the modularized automatic reclosing miniature residual current circuit breaker which is simple in structure, stable and reliable in performance, small in size, convenient and fast to assemble and low in cost.

In order to achieve the purpose, the utility model adopts a modularized automatic reclosing small-sized leakage breaker, which comprises a breaker unit and an automatic reclosing device used for driving the breaker unit to perform opening and closing actions, wherein one side of the breaker unit is provided with a leakage protection module, the leakage protection module comprises a terminal seat arranged on a shell of the breaker unit, a cover plate arranged on the terminal seat, a plurality of wiring terminals respectively arranged in the terminal seat, a zero sequence transformer arranged in the terminal seat and a plurality of conductive copper bars respectively electrically connected with the breaker unit, one ends of the plurality of conductive copper bars respectively penetrate through the zero sequence transformer and are respectively connected to the plurality of wiring terminals, and a conducting wire is connected between the zero sequence transformer and an intelligent control circuit board of the automatic reclosing device.

The beneficial effect of above-mentioned structure is: this automatic miniature residual current circuit breaker of coincidence adopts the earth leakage protection module of modular structure design to can realize this miniature residual current circuit breaker's modular assembly, the assembly is more convenient. And the electric leakage protection module is provided with a conductive copper bar which is contacted with the circuit breaker unit, so that the electric leakage protection module is convenient to assemble with the circuit breaker unit, and the requirements of function diversification and miniaturization of the miniature circuit breaker can be met. Therefore, the automatic reclosing small residual current circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.

Particularly, the terminal block comprises a terminal block body and a terminal pressing plate arranged on the terminal block body, wherein a plurality of terminal accommodating cavities and mutual inductor accommodating grooves are formed between the terminal body and the terminal pressing plate respectively, the plurality of wiring terminals are arranged in the plurality of terminal accommodating cavities respectively, and the zero sequence mutual inductor is arranged in the mutual inductor accommodating grooves. The terminal base is internally provided with a terminal containing cavity and a mutual inductor containing groove which are used for containing the wiring terminal and the zero sequence mutual inductor respectively, the zero sequence mutual inductor can be separated from the wiring terminal, the assembly of the wiring terminal, the zero sequence mutual inductor and the terminal base is convenient, and the assembly efficiency is higher.

Particularly, one side of the terminal pressing plate is provided with a plurality of positioning columns, the shell of the circuit breaker unit is respectively provided with positioning grooves matched with the positioning columns, the positioning columns are inserted in the positioning grooves, and the terminal pressing plate is in clamping fit with the shell. The terminal pressing plate is connected with the shell of the circuit breaker unit in a clamping matching mode, and pre-assembly of the electric leakage protection module and the shell can be achieved, so that assembly of the electric leakage protection module and the circuit breaker unit is facilitated.

In particular, the cover plate is provided with screws which sequentially penetrate through the terminal pressure plate and are connected to the housing of the circuit breaker unit. The screw is connected between the cover plate and the shell of the circuit breaker unit, so that the connection between the leakage protection module and the shell of the circuit breaker unit can be more compact.

Particularly, a square clamping block is arranged on one side of the cover plate, a limiting hole matched with the square clamping block is formed in the shell of the automatic reclosing device, and the square clamping block is clamped in the limiting hole and forms clamping matching of the cover plate and the shell. The cover plate is connected with the shell of the automatic reclosing device in a clamping matching mode, so that the leakage protection module and the automatic reclosing device are assembled in a modularized mode conveniently, and the assembly is more convenient.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an internal structural view of the embodiment of the present invention.

Fig. 3 is an exploded view of an embodiment of the present invention.

Fig. 4 is an internal structure diagram of the earth leakage protection module according to the embodiment of the utility model.

Fig. 5 is a perspective view of the earth leakage protection module of the present invention with the terminal pressure plate removed.

Detailed Description

As shown in fig. 1 to 5, an embodiment of the utility model is a modular automatic reclosing miniature residual current circuit breaker, which comprises a breaker unit 10, an automatic reclosing device 20 for driving the breaker unit 10 to perform an opening and closing action, an earth leakage protection module 30 is arranged on one side of the breaker unit 10, the earth leakage protection module 30 comprises a terminal block 31 arranged on the shell 11 of the breaker unit 10, a cover plate 32 arranged on the terminal block 31, a plurality of connecting terminals 33 respectively arranged in the terminal block 32, a zero sequence transformer 34 arranged in the terminal block 31, and a plurality of conductive copper bars 35 respectively electrically connected with the breaker unit 10, one end of each of the plurality of conductive copper bars 35 passes through the zero sequence transformer 34 and is connected to the plurality of connection terminals 33, and a lead 36 is connected between the zero sequence transformer 34 and the intelligent control circuit board of the automatic reclosing device 20.

As shown in fig. 2 to 4, the terminal block 31 includes a terminal block body 311 and a terminal pressing plate 312 disposed on the terminal block body 311, a plurality of terminal accommodating cavities 301 and a transformer accommodating cavity 302 are respectively formed between the terminal body 311 and the terminal pressing plate 312, the plurality of connection terminals 33 are respectively disposed in the plurality of terminal accommodating cavities 301, and the zero-sequence transformer 34 is disposed in the transformer accommodating cavity 302. The terminal base is internally provided with a terminal containing cavity and a mutual inductor containing groove which are used for containing the wiring terminal and the zero sequence mutual inductor respectively, the zero sequence mutual inductor can be separated from the wiring terminal, the assembly of the wiring terminal, the zero sequence mutual inductor and the terminal base is convenient, and the assembly efficiency is higher. Terminal clamp plate 312 on one side on be provided with a plurality of reference column 3121, the casing 11 of circuit breaker unit 10 on be provided with respectively with a plurality of reference column 3121 matched with constant head tank, reference column 3121 alternate in the constant head tank, and constitute the joint cooperation of terminal clamp plate 312 and casing 11. The terminal pressing plate is connected with the shell of the circuit breaker unit in a clamping matching mode, and pre-assembly of the electric leakage protection module and the shell can be achieved, so that assembly of the electric leakage protection module and the circuit breaker unit is facilitated. The cover plate 32 is provided with screws 321, and the screws 321 sequentially penetrate through the terminal pressing plate 312 and are connected to the housing 11 of the circuit breaker unit 10. The screw is connected between the cover plate and the shell of the circuit breaker unit, so that the connection between the leakage protection module and the shell of the circuit breaker unit can be more compact.

As shown in fig. 3 and 5, a square latch 322 is disposed on one side of the cover plate 32, a limiting hole 211 matched with the square latch 322 is disposed on the housing 21 of the automatic reclosing device 20, and the square latch 322 is clamped in the limiting hole 211 to form a clamping fit between the cover plate 32 and the housing 21. The cover plate is connected with the shell of the automatic reclosing device in a clamping matching mode, so that the leakage protection module and the automatic reclosing device are assembled in a modularized mode conveniently, and the assembly is more convenient.

This automatic miniature residual current circuit breaker of coincidence adopts the earth leakage protection module of modular structure design to can realize this miniature residual current circuit breaker's modular assembly, the assembly is more convenient. And the electric leakage protection module is provided with a conductive copper bar which is contacted with the circuit breaker unit, so that the electric leakage protection module is convenient to assemble with the circuit breaker unit, and the requirements of function diversification and miniaturization of the miniature circuit breaker can be met. Therefore, the automatic reclosing small residual current circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.

Claims

1. The utility model provides a small-size residual current circuit breaker of modularization automatic reclosing, includes circuit breaker unit, is used for driving the automatic reclosing device that circuit breaker unit carried out the divide-shut brake action, its characterized in that: one side of circuit breaker unit on be provided with earth leakage protection module, earth leakage protection module including setting up terminal seat on circuit breaker unit's casing, setting up apron on terminal seat, a plurality of binding post that set up respectively in terminal seat, set up zero sequence transformer in terminal seat, a plurality of electrically conductive copper bars of being connected with circuit breaker unit electricity respectively, a plurality of electrically conductive copper bar's one end pass zero sequence transformer respectively and connect respectively on a plurality of binding post, zero sequence transformer and automatic reclosing device's intelligent control circuit board between be connected with the wire.

2. The modular recloser miniature residual current circuit breaker according to claim 1, characterized in that: the terminal block comprises a terminal block body and a terminal pressing plate arranged on the terminal block body, a plurality of terminal containing cavities and a mutual inductor containing groove are formed between the terminal body and the terminal pressing plate respectively, a plurality of wiring terminals are arranged in the terminal containing cavities respectively, and the zero sequence mutual inductor is arranged in the mutual inductor containing groove.

3. The modular recloser miniature residual current circuit breaker according to claim 2, characterized in that: one side of terminal clamp plate on be provided with a plurality of reference columns, the casing of circuit breaker unit on be provided with respectively with a plurality of reference column matched with constant head tank, the reference column alternate in the constant head tank, and constitute the joint cooperation of terminal clamp plate and casing.

4. Modular recloser miniature residual current circuit breaker according to claim 1 or 2, characterized in that: the cover plate is provided with screws, and the screws sequentially penetrate through the terminal pressing plate and are connected to the shell of the circuit breaker unit.

5. Modular recloser miniature residual current circuit breaker according to claim 1 or 2, characterized in that: one side of the cover plate is provided with a square clamping block, a shell of the automatic reclosing device is provided with a limiting hole matched with the square clamping block, and the square clamping block is clamped in the limiting hole to form clamping matching of the cover plate and the shell.