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Internal feedback device for control and protection switchgear

A feedback device and protection switch technology, applied in the direction of electric switches, circuits, electrical components, etc., can solve the problems of inconvenient connection and long wiring

Active Publication Date: 2018-03-27
SEARI ELECTRIC TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an integral control and protection switching device, because the signal sources that need to be transmitted are distributed on different levels, the design often results in long wiring and inconvenient connections.

Method used

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  • Internal feedback device for control and protection switchgear
  • Internal feedback device for control and protection switchgear
  • Internal feedback device for control and protection switchgear

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present invention proposes an internal feedback device for controlling and protecting switchgear, including: a bracket, a contact supporting part, a static contact bracket group, a moving contact bridge group, a moving contact spring, and a main spring. There are several movable contact grooves on the contact support piece, the movable contact bridge group and the movable contact spring are installed in the movable contact groove, a movable contact bridge is installed in each movable contact groove, and the movable contact bridge is installed under the movable contact bridge. head spring. There are moving contacts on the moving contact bridge. There is a switching mechanism on the contact supporting part, and the switching mechanism cooperates with the actuator to change the state of the contact group. The bottom of the contact holder has a main spring. The contact support is located within the bracket. The static contact bracket groups are arranged along the out...

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PUM

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Abstract

An internal feedback apparatus for control and protection of an electrical switching device comprises a bracket (101), a contact supporting member (102), static contact bracket groups (104, 105), and a housing. The contact supporting member (102) is mounted in the bracket (101). The contact supporting member (102) is provided with moving contacts. The static contact bracket groups (104, 105) are provided with static contacts. The moving contacts and the static contacts form a contact group. The bracket (101), the contact supporting member (102) and the static contact bracket groups (104, 105) are accommodated in the housing. The contact supporting member (102) is provided with a switching mechanism (121). The switching mechanism (121) extends out of the housing and drives, by means of a switching structure, movement of the contact supporting member (102), so as to change the state of the contact group. The apparatus uses direct connection type feedback, which is different from the conventional lever structure; the apparatus is disposed in the switching device, thus allowing for small volume, convenient wiring and fewer transmission links. The apparatus is also directly connected to an execution mechanism, thereby improving the reliability of signal transmission.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, more specifically, to a feedback device for switching electrical appliances. Background technique [0002] Control and protection switchgear is an important product in the field of low-voltage electrical appliances. This product integrates the control and protection functions of switchgear, such as a combination of circuit breakers, contactors and thermal relays. It can be an integral switchgear or a Consists of discrete components. This type of integral switching device has the advantages of small size and strong function. [0003] Usually this type of switchgear has an auxiliary device, the auxiliary device is usually designed as an auxiliary module type, installed on the side of the switchgear or outside the casing, or built into the inside of the switchgear, and can be used to indicate the status of the switchgear. Auxiliary devices such as circuit breakers are usually assoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/58H01H3/32H01H9/02
CPCH01H1/58H01H3/32H01H9/02
Inventor 李思泓贾峰奚泓郑捷欣黄悲鸣曾萍张地
Owner SEARI ELECTRIC TECH