CN218730385U

CN218730385U - High-precision current transformer for intelligent circuit breaker

Info

Publication number: CN218730385U
Application number: CN202223065291.1U
Authority: CN
Inventors: 叶飞; 姜小明; 叶肖俊; 黄志浩; 廖志成; 祝小明
Original assignee: Zhejiang Chuanfeng Electric Technology Co ltd
Current assignee: Zhejiang Chuanfeng Electric Technology Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-24
Anticipated expiration: 2032-11-18

Abstract

The utility model is suitable for a current transformer technical field provides a high accuracy current transformer for intelligent circuit breaker, which comprises a housin, run through around the surface of casing and seted up first window, second window and third window, first window is located the middle part, second window and third window are located both sides respectively, the inside vacuole formation of casing, inside first winding coil, second winding coil and the third winding coil of being provided with of cavity. This high accuracy current transformer for intelligent circuit breaker installs three winding coil to a casing in, mutual staggered arrangement around three winding coils of group, overlaps partly each other respectively, thereby can reduce the volume that the casing can be dwindled to the space that three winding coil occupy, merges into one with three current transformer to need the space that occupies when reducing the current transformer installation, realized miniaturized design, need not work a telephone switchboard to three winding coil in proper order, it is more simple and convenient to operate.

Description

High-precision current transformer for intelligent circuit breaker

Technical Field

The utility model belongs to the technical field of current transformer, especially, relate to a high accuracy current transformer for intelligent circuit breaker.

Background

The traditional current transformer that uses with the circuit breaker cooperation is three independent single-phase current transformer usually at present, but three independent current transformer when the installation to the space demand great, cause bigger influence for the cubical switchboard that originally the space is compact relatively, arrange other electrical equipment in the cabinet and cause certain inconvenience, can cause the potential safety hazard to the operation even. If the condition that circuit breaker copper bar looks interval is littleer appears, when three independent current transformer of installation, the installation degree of difficulty is great, can appear the condition of unable installation even. And because three mutual inductors need be installed alone, it is long when having increased the installation by a wide margin, work efficiency is low. In addition, when a current transformer matched with the existing circuit breaker is used for wiring a secondary terminal, each transformer needs to be wired independently, the wiring process is complicated, and even wiring errors are easily caused to cause damage to equipment operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high accuracy current transformer for intelligent circuit breaker aims at solving current transformer that uses with the circuit breaker cooperation and is three independent single-phase current transformer usually, and great to the space demand when the installation, the installation degree of difficulty is great, can appear the problem of the condition of unable installation even, needs to work a telephone switchboard alone to every mutual-inductor, and the wiring process is loaded down with trivial details.

The utility model discloses a realize like this, a high accuracy current transformer for intelligent circuit breaker, which comprises a housin, first window, second window and third window have been seted up to running through around the surface of casing, first window is located the middle part, second window and third window are located both sides respectively, the inside vacuole formation of casing, inside first winding coil, second winding coil and the third winding coil of being provided with of cavity, first winding coil, second winding coil and third winding coil correspond respectively encircle in first window, second window and third window are outside, just mutual staggered arrangement around first winding coil, second winding coil and the third winding coil overlaps each other and is "article" font and arranges on the horizontal plane top edge.

Preferably, the top of the shell is provided with a wiring groove, and a wiring terminal is arranged in the wiring groove.

Preferably, the terminals of the first winding coil, the second winding coil and the third winding coil are respectively connected with the connection terminal.

Preferably, the front side face of the shell is located above the second window and the third window, the mounting seat is fixedly connected with the mounting seat, a bolt vertically penetrates through the mounting seat, the bolt is in threaded connection with the mounting seat, and the bottom ends of the two bolts are respectively provided with a sucker located in the inner cavities of the second window and the third window.

Preferably, the second winding coil and the third winding coil are mirror winding.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a high accuracy current transformer for intelligent circuit breaker, install three winding coil to a casing in, mutual staggered arrangement around three winding coils of group, overlap each other at the horizontal plane top edge and be article font and arrange, overlap partly each other respectively, thereby can reduce the volume that the space that three winding coil occupy can reduce the casing, merge into one with three current transformer, and the space that needs occupy when reducing the current transformer installation, miniaturized design has been realized, when the installation, need not work a telephone switchboard in proper order to three winding coil, only need once be connected to external line on the binding post, can realize the wiring of three winding coil, it is simple and convenient more to operate.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a front cross-sectional view of the present invention;

fig. 3 is a cross-sectional view from above of the present invention;

fig. 4 is a side view of the present invention.

In the figure: 1-shell, 2-first window, 3-second window, 4-third window, 5-cavity, 6-first winding coil, 7-second winding coil, 8-third winding coil, 9-wiring groove, 10-wiring terminal, 11-mounting seat, 12-bolt and 13-sucker.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high accuracy current transformer for intelligent circuit breaker, which comprises a housin 1, casing 1's surface runs through around having seted up first window 2, second window 3 and third window 4, first window 2 is located the middle part, second window 3 and third window 4 are located both sides respectively, the inside vacuole formation 5 of casing 1, cavity 5 inside is provided with first winding coil 6, second winding coil 7 and third winding coil 8, first winding coil 6, second winding coil 7 and third winding coil 8 correspond respectively to encircle in first window 2, second window 3 and third window 4 are outside, and first winding coil 6, second winding coil 7 and third winding coil 8 are staggered arrangement each other from beginning to end, edge overlaps each other and is "article" font and arranges on the horizontal plane.

In the present embodiment, the first winding coil 6 is located at a position opposite to the front side, the second winding coil 7 and the third winding coil 8 are located at a position opposite to the rear side, and are bilaterally symmetrical, and when viewed from the front, both sides of the first winding coil 6 respectively shield the left side of the second winding coil 7 and the right side of the third winding coil 8, so that the first winding coil 6, the second winding coil 7 and the third winding coil 8 form a delta shape in a top view angle. While the area of each winding coil can be increased as much as possible in a limited space.

Further, a wiring groove 9 is formed in the top of the housing 1, and a wiring terminal 10 is arranged in the wiring groove 9.

Further, the terminals of the first winding coil 6, the second winding coil 7 and the third winding coil 8 are connected to the connection terminals 10, respectively.

In this embodiment, the S2 ends of the three winding coils are respectively connected with the wiring terminal 10, and when the three winding coils are installed, the three winding coils do not need to be sequentially wired, and only the external circuit needs to be connected to the wiring terminal 10 once, so that the wiring of the three winding coils can be realized, and the operation is simpler and more convenient. Meanwhile, the problem of safety accidents caused by wiring errors is also avoided.

Further, the front side surface of the shell 1 is fixedly connected with an installation seat 11 above the second window 3 and the third window 4, a bolt 12 vertically penetrates through the installation seat 11, the bolt 12 is in threaded connection with the installation seat 11, and suction cups 13 located in inner cavities of the second window 3 and the third window 4 are respectively arranged at the bottom ends of the two bolts 12.

In the present embodiment, the installation can be achieved by tightening the bolt 12 and moving the suction cup 13 downward.

Further, the second winding coil 7 and the third winding coil 8 are mirror-image windings. The consistency of the secondary current output of the three-phase winding of the combined transformer is realized.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high accuracy current transformer for intelligent circuit breaker which characterized in that: including casing (1), first window (2), second window (3) and third window (4) have been seted up to running through around the surface of casing (1), first window (2) are located the middle part, second window (3) and third window (4) are located both sides respectively, the inside vacuole formation (5) of casing (1), cavity (5) inside is provided with first winding coil (6), second winding coil (7) and third winding coil (8), first winding coil (6), second winding coil (7) and third winding coil (8) respectively correspond encircle in first window (2), second window (3) and third window (4) outside, just first winding coil (6), second winding coil (7) and third winding coil (8) are staggered arrangement each other around, overlap each other at the top edge and are "article" font and arrange.

2. The high-precision current transformer for the intelligent circuit breaker as claimed in claim 1, wherein: the top of casing (1) is provided with wiring groove (9), be provided with binding post (10) in wiring groove (9).

3. The high-precision current transformer for the intelligent circuit breaker as claimed in claim 2, wherein: and the wiring ends of the first winding coil (6), the second winding coil (7) and the third winding coil (8) are respectively connected with the wiring terminal (10).

4. The high-precision current transformer for the intelligent circuit breaker as claimed in claim 1, wherein: the front side face of the shell (1) is located an installation seat (11) fixedly connected with the upper portions of the second window (3) and the third window (4), a bolt (12) vertically penetrates through the installation seat (11), the bolt (12) is in threaded connection with the installation seat (11), and the bottom end of the bolt (12) is provided with a sucker (13) located in the inner cavity of the second window (3) and the inner cavity of the third window (4) respectively.

5. The high-precision current transformer for the intelligent circuit breaker as claimed in claim 1, wherein: the second winding coil (7) and the third winding coil (8) are mirror image windings.