CN213401016U

CN213401016U - Moulded case circuit breaker with external mutual inductor

Info

Publication number: CN213401016U
Application number: CN202022193103.8U
Authority: CN
Inventors: 张磊; 张鹏鸿; 李林
Original assignee: Zhejiang Zhixuan Electric Co ltd
Current assignee: Zhejiang Zhixuan Electric Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-08
Anticipated expiration: 2030-09-29

Abstract

The utility model relates to a circuit breaker technical field, concretely relates to moulded case circuit breaker of external mutual-inductor, including the circuit breaker body and be located the outside a plurality of current transformer of circuit breaker body, be connected with the live wire on the circuit breaker body, the live wire can run through current transformer. When the technical scheme is adopted, the current transformer is convenient to adapt to multi-model molded case circuit breakers.

Description

Moulded case circuit breaker with external mutual inductor

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to moulded case circuit breaker of external mutual-inductor.

Background

A circuit breaker is a circuit protection device arranged in an electric circuit for securing electricity. When the circuit is abnormal, such as short circuit, overload, undervoltage and other abnormal conditions, the circuit breaker can automatically switch from the conducting state to the disconnecting state, so that the aim of electric safety is fulfilled by disconnecting the circuit.

The current molded case circuit breaker adopts a mode of internally arranging a current transformer, the current transformer is connected with a circuit board of the molded case circuit breaker through a wire, and the molded case circuit breaker is connected with a live wire. Because every kind of current transformer only adapts the moulded case circuit breaker of a model, a current transformer can only assemble in the moulded case circuit breaker of a model promptly, can't accomplish the moulded case circuit breaker of several kinds of different models of a current transformer adaptation simultaneously, so when the moulded case circuit breaker of different models needs to be used, must correspond the selection and be equipped with the current transformer of different models, the current transformer in the moulded case circuit breaker just abandoned originally, must lead to the fact waste and cost to increase like this.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a place the mutual-inductor in moulded case circuit breaker outside to mutual-inductor adaptation in the moulded case circuit breaker of polytypic.

In order to achieve the above object, the technical scheme of the utility model a moulded case circuit breaker of external mutual-inductor is provided, including the circuit breaker body and be located the outside a plurality of current transformer of circuit breaker body, be connected with the live wire on the circuit breaker body, the live wire can run through current transformer.

The technical effect of the scheme is as follows: when the moulded case circuit breakers of different models need to be used, only the circuit breaker body needs to be replaced, the current transformer matched with the front moulded case circuit breaker can be continuously used and replaced, the current transformer does not need to be replaced, the current transformer before the circuit breaker can be continuously used, after the current transformer is electrically connected with a new circuit breaker body, a live wire connected to the circuit breaker body is electrically connected after penetrating through the current transformer, and the current transformer positioned outside the circuit breaker body can be hung and installed through the live wire, so that the circuit breaker is very convenient.

Further, be equipped with a plurality of terminals of connecting the live wire on the circuit breaker body, every current transformer includes mutual-inductor body and mutual-inductor box body, and the mutual-inductor body is located the mutual-inductor box body, and the mutual-inductor box body includes box body, lid and body, and lid and box body can be dismantled the connection, and all be equipped with the wiring hole of mutual intercommunication on lid and the box body, and the body runs through the box body, and the live wire can run through the body. The technical effect of the scheme is as follows: the mutual inductor box body can protect the mutual inductor body, and the wire is convenient for be connected with the mutual inductor body behind the wiring hole.

Furthermore, a supporting plate is fixed on the circuit breaker body and located above the wiring terminal, and a through hole capable of being aligned with the pipe body is formed in the supporting plate. The technical effect of the scheme is as follows: the mutual inductor box body is convenient to place on the supporting plate for installation.

Further, the box body comprises a frame body and a cover plate, and the cover plate is detachably connected with the frame body. The technical effect of the scheme is as follows: the mutual inductor body is convenient to install in the mutual inductor box body.

Further, the lid is protruding type, and the body runs through the lateral wall and the apron of framework. The technical effect of the scheme is as follows: the cover body is convenient to mount and dismount.

Furthermore, the pipe body is fixedly connected with the side wall of the frame body, and the cover plate is provided with a hole for the pipe body to penetrate through. The technical effect of the scheme is as follows: the tube body is convenient for positioning the current transformer.

Furthermore, the cover body is concave, a bolt is connected to the cover body through threads, and the cover body is connected with the box body through the bolt. The technical effect of the scheme is as follows: the bolt is located the sunken position of lid, is favorable to improving the aesthetic property.

Furthermore, a hand-held board is fixed on the cover body. The technical effect of the scheme is as follows: the mutual inductor box body is convenient to carry.

Furthermore, a clamping block in an L shape is fixed on the frame body, a fastener in a [ -shape is fixed on the breaker body, and the clamping block can be buckled into the fastener. The technical effect of the scheme is as follows: the stability of the mutual inductor box body is improved.

Furthermore, the circuit breaker body is internally provided with a metering chip. The technical effect of the scheme is as follows: the accuracy of current collection is convenient to improve.

Drawings

Fig. 1 is a schematic forward view of a circuit breaker body according to an embodiment of the present invention;

fig. 2 is a sectional view of a case body of a mutual inductor according to an embodiment of the present invention;

FIG. 3 is a top view of the cover of the transformer enclosure of FIG. 2;

fig. 4 is a three-dimensional schematic view of a cover plate.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the circuit breaker comprises a circuit breaker body 1, a mutual inductor box body 2, a bottom plate 3, a wiring terminal 4, a supporting plate 5, a through hole 6, a box body 7, a cover body 8, a pipe body 9, a frame body 10, a cover plate 11, a screw 12, a wiring hole 13, a hole 14, a portable plate 15, a clamping block 16 and a clamping buckle 17.

The first embodiment is as follows:

the first embodiment is substantially as shown in figures 1 to 4 of the accompanying drawings: as shown in fig. 1, the molded case circuit breaker with the external transformers comprises a circuit breaker body 1 and four current transformers, each current transformer comprises a transformer body and a transformer box body 2, the transformer bodies are located in the transformer box bodies 2, each transformer body is composed of a closed iron core and a winding, and the transformer box bodies 2 are located outside the circuit breaker body 1.

The circuit breaker body 1 comprises a bottom plate 3, the right view of the circuit breaker body 1 in fig. 1 is in an L shape, and four binding posts 4 connected with a live wire are welded on the bottom plate 3; the welding has backup pad 5 on the circuit breaker body 1, and backup pad 5 is located terminal 4 top, and the welding has the baffle between backup pad 5 and the bottom plate 3, and the baffle separates each terminal 4, and it has through-hole 6 to open on the backup pad 5.

As shown in fig. 2, each transformer case 2 includes a case body 7, a cover 8 and a tube 9, the case body 7 includes a frame 10 and a cover plate 11 as shown in fig. 4, the cover 8 is in a shape of a Chinese character 'tu', and the cover plate 11 can be embedded into the frame 10 and detachably connected to the frame 10.

The cover body 8 is concave, threaded holes are formed in the top of the cover body 8 and the top of the frame body 10, screws 12 are connected with the threaded holes in a threaded mode, and the cover body 8 is connected with the frame body 10 through the screws 12; the top of lid 8 and framework 10 all opens the wiring hole 13 that is convenient for carry out the wiring to current transformer, and the wiring hole 13 at the top of lid 8 and framework 10 communicates each other.

The tube 9 shown in fig. 2 penetrates through the rear side wall of the frame 10 and the cover plate 11, specifically, the tube 9 is welded to the rear side wall of the frame 10 and penetrates through the rear side wall of the frame 10, and the cover plate 11 shown in fig. 4 is provided with a hole 14 for the tube 9 to pass through; or, the pipe body 9 is welded with the cover plate 11 and penetrates through the cover plate 11, and a circular hole for the pipe body 9 to penetrate through is formed in the rear side wall of the frame body 10. The body 9 can be aligned with the through-hole 6 as shown in figure 1 and the live wire connected to the terminal 4 can pass through the body 9.

The specific implementation process is as follows:

when plastic case breakers of different models need to be used, only the breaker body 1 needs to be replaced, the current transformer matched with the plastic case breaker before replacement can be continuously used, namely, the current transformer does not need to be replaced, the current transformer before replacement can be continuously used, after the transformer body in the transformer box body 2 is electrically connected with a new breaker body 1, a live wire connected to the breaker body 1 penetrates through the tube body 9 and then is electrically connected with a household live wire; the live wire can also place mutual-inductor box body 2 in backup pad 5 after passing body 9, and the installation is very convenient.

Example two:

in addition to the first embodiment, as shown in fig. 3, a handle plate 15 is welded to the lid body 8. As shown in fig. 2, a latch 16 in an "L" shape is welded to the bottom of the frame 10, as shown in fig. 1, a latch 17 is welded to the circuit breaker body 1, and when viewed from the top of fig. 1, the latch 17 is in a "[" shape and rotates counterclockwise by 90 degrees, and the latch 16 can be latched into the latch 17.

Example three:

on the basis of the second embodiment, in order to improve the accuracy of current collection, a metering chip can be connected to the circuit of the molded case circuit breaker in the circuit breaker body 1, and the model of the metering chip can be selected from the RN 8312.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides an external mutual-inductor's moulded case circuit breaker which characterized in that: the circuit breaker comprises a circuit breaker body and a plurality of current transformers positioned outside the circuit breaker body, wherein a live wire is connected to the circuit breaker body and can penetrate through the current transformers; be equipped with a plurality of terminals of connecting the live wire on the circuit breaker body, every current transformer includes mutual-inductor body and mutual-inductor box body, and the mutual-inductor body is located the mutual-inductor box body, and the mutual-inductor box body includes box body, lid and body, and lid and box body can dismantle the connection, and all be equipped with the wiring hole of mutual intercommunication on lid and the box body, and the body runs through the box body, and the live wire can run through the body.

2. The molded case circuit breaker with an external transformer as claimed in claim 1, wherein: the circuit breaker body is fixed with the backup pad, and the backup pad is located the terminal top, is equipped with the through-hole that can aim at with the body in the backup pad.

3. The molded case circuit breaker with an external transformer as claimed in claim 2, wherein: the box body comprises a frame body and a cover plate, and the cover plate is detachably connected with the frame body.

4. The molded case circuit breaker with an external transformer as claimed in claim 3, wherein: the lid is protruding type, and the body runs through the lateral wall and the apron of framework.

5. The molded case circuit breaker with an external transformer as claimed in claim 4, wherein: the pipe body is fixedly connected with the side wall of the frame body, and the cover plate is provided with a hole for the pipe body to pass through.

6. The molded case circuit breaker of the external transformer as claimed in claim 5, wherein: the cover body is concave, a bolt is connected to the cover body through threads, and the cover body is connected with the box body through the bolt.

7. The molded case circuit breaker with an external transformer as claimed in claim 6, wherein: a portable plate is fixed on the cover body.

8. The molded case circuit breaker of the external transformer as claimed in claim 7, wherein: the frame body is fixed with a clamping block in an L shape, the breaker body is fixed with a fastener in a [ -shape, and the clamping block can be buckled into the fastener.

9. The molded case circuit breaker of the external transformer as claimed in claim 8, wherein: a metering chip is arranged in the breaker body.