CN201570458U

CN201570458U - Electronic release support of electronic low-voltage circuit breaker

Info

Publication number: CN201570458U
Application number: CN2009202835556U
Authority: CN
Inventors: 朱未东; 江长生; 陈咸; 任飞
Original assignee: JIANGSU HUINENG ELECTRIC CO Ltd
Current assignee: JIANGSU HUINENG ELECTRIC CO Ltd
Priority date: 2009-12-17
Filing date: 2009-12-17
Publication date: 2010-09-01
Anticipated expiration: 2019-12-17

Abstract

The utility model relates to an electronic release support of an electronic low-voltage circuit breaker, which comprises a first support in a U-shaped structure, a second support and at least two third supports in an I-shaped structure, and the three supports are connected left and right; and a first baffle and a second baffle are respectively connected on both sides of the first support, the second support and the third support. A transformer support has simple spliced structural parts and is reliable to assembly, and can easily and flexibly realize the assembly requirements of the electronic releases of a three-pole and a four-pole circuit breakers; and a transformer is fully wrapped in the transformer support, has enough insulating strength with the main circuit of the circuit breaker, thereby ensuring the electrical safety of the transformer, and fully eliminating the hidden safety hazards.

Description

A kind of electronic release bracket of electronic low pressure circuit breaker

Technical field

The utility model relates to the electronic trip unit of electronic low pressure circuit breaker, relates in particular to the support that this electronic trip unit is installed.

Background technology

Low-voltage circuit breaker is generally commonly used the distribution type, protect electronic type, band residual current protecting type and electronic breaker.Electronic low pressure circuit breaker has overload long delay, short circuit short time delay, short circuit is instantaneous and function such as under voltage protection, and is more comprehensive than common Thermomagetic circuit-breaker on the function, and distribution line and electric equipment are played more reliable, more fully protection; The various functions of electronic low pressure circuit breaker all rely on electronic trip unit to realize, electronic trip unit comprises: instrument transformer, circuit board and executive component and the fixing and support that is connected the three, the every utmost point of circuit breaker all has an instrument transformer to detect the current situation that flows through circuit breaker in real time, instrument transformer is little current signal with big electric current conversion and is delivered to circuit board, the instruction process signal that circuit board configures according to the user, indication executive component output corresponding action and signal.

The instrument transformer of present electronic breaker generally directly navigates in the stopper slot that base cooperates with it, thereby many stopping means that cooperate with instrument transformer are arranged on base, makes base complicated; And the not special protection of instrument transformer, not enough with the major loop dielectric strength of circuit breaker, under the situation of the big electric current of circuit breaker, burn instrument transformer easily and cause phase fault; The existing mode of connection is all leaded circuit board that is connected to of arbitrary instrument transformer, connection lead that wherein can some is exposed to wiring board support outside, and cabling is confusing, and location not, lead is damaged and runs into easily the major loop of circuit breaker easily when assembling, have certain potential safety hazard; Existing circuit board generally is directly installed in the support of electronic trip unit, unreliable location, and not enough with the dielectric strength of main circuit, there is certain potential safety hazard.

Summary of the invention

At the existing defective of the electronic trip unit of existing electronic low pressure circuit breaker, the utility model provides a kind of electronic release bracket of electronic low pressure circuit breaker, installs simple, safe and reliable and volume is small and exquisite.

The technical solution adopted in the utility model is: be by first support of U type structure, second support and at least two about the 3rd support of " worker " type structure and connect to form: first baffle plate and second baffle are connected to the both sides of first support, second support and the 3rd support.

The beneficial effects of the utility model are:

1, the assembled structure part of transducer bracket is simple, assembling is reliable, can realize three utmost points and the matching requirements of four-pole circuit breaker electronic trip unit in easy and flexible ground.

2, instrument transformer in transducer bracket, is had enough dielectric strength with the circuit breaker major loop by complete envelope, guarantees the instrument transformer electrical safety, eliminates safe hidden trouble fully.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the utility model structure broken away view;

Fig. 2 is Fig. 1 structure explosive view;

Among the figure: 11. first supports; 12. second support; 13 the 3rd supports; 2. first baffle plate; 3. second baffle; 4. instrument transformer; 5. circuit board.

Embodiment:

As shown in Figure 1, 2, the utility model is made up of first baffle plate 2, second baffle 3, first support 11, second support 12 and two the 3rd supports 13 at least, first baffle plate 2 and second baffle 3 are fixedly set in the both sides of electronic release bracket respectively, promptly be connected the both sides of first support 11, second support 12 and the 3rd support 13, first baffle plate 2 and second baffle 3 are formed by plastic material injection moulding or other processing mode.

First support 11 is equipped with fixedly instrument transformer 4 by its groove mutually with the appearance profile of instrument transformer 4.Second support 12 and first support, 11 symmetrical configuration, architectural feature is identical with corresponding architectural feature on first support 11; The 3rd support 13 is " worker " type structure, on the 3rd support 13 " worker " type structure side wall inner cavity surface, have and first support 11, the corresponding limited impression of second support, 12 sidewalls, the roof of the 3rd support 13 and the boss on the diapire and groove respectively with first support 11, second support 12 on roof, the boss on the diapire, groove match, connect with the fit form of concaveconvex structure.

First baffle plate 2 is T-shaped, and second baffle 3 and the 2 corresponding cooperations of first baffle plate have several fixing lug boss on second baffle 3, be used for by screw wiring board 5 being connected to second baffle 3.

Mounting means of the present utility model is: first support 11 of transducer bracket, second support 12 and at least two the 3rd support 13 envelope instrument transformers 4 are attached to together with left and right sides erection method, limited impression on first baffle plate 2 and the transducer bracket matches, to connect first baffle plate 2 to transducer bracket, second baffle 3 cooperates with positive stop lug boss on the transducer bracket, so that first baffle plate 2 is connected to transducer bracket.

Claims

1. the electronic release bracket of an electronic low pressure circuit breaker is characterized in that: be by first support (11) of U type structure, second support (12) and at least two about the 3rd support (13) of " worker " type structure and connect to form: first baffle plate (2) and second baffle (3) are connected to the both sides of first support (11), second support (12) and the 3rd support (13).

2. the electronic release bracket of a kind of electronic low pressure circuit breaker according to claim 1, it is characterized in that: the 3rd support (13) is connected with concaveconvex structure with first support (11), second support (12) respectively.