Structure of switchgear with arc eliminator

Patent metadata

Field	Value
Publication number	US-10020643-B2
Application number	US-201615151420-A
Country	US
Kind code	B2
Filing date	May 10, 2016
Priority date	Jul 15, 2015
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

The present invention relates to a structure of a switchgear with an arc protection system including an arc optical sensor to detect an arc, a relay to determine an occurrence or non-occurrence of a fault current by receiving an arc signal detected by the arc optical sensor, and an arc eliminator to earth an arc-generated side bus bar in response to an operating signal with respect to the determined fault current, wherein the arc eliminator has a test position or a service position within the switchgear.

First claim

What is claimed is:

1. A structure of a switchgear with an arc eliminator in the structure of the switchgear comprising an arc optical sensor to detect an arc, a relay to determine an occurrence or non-occurrence of a fault current by receiving an arc signal detected by the arc optical sensor, and the arc eliminator to earth an arc-generated side bus bar in response to an operating signal with respect to the fault current,
wherein the arc eliminator is coupled to a cradle conveyer to be horizontally movable back and forth within the switchgear so as to be located at a test position or a service position,
wherein the structure of the switchgear is provided on a same panel together with the arc eliminator according to a riser panel structure, and
wherein the riser panel structure is a structure in which the arc eliminator is connected between an upstream bus bar and a downstream bus bar.

2. The structure of claim 1 , wherein the structure of the switchgear comprises, in addition to the arc eliminator disposed therein, a plurality of tulip contacts provided on a front surface, a shutter-driving device provided on a side surface, the cradle conveyer provided at a lower surface, and bushings contactable with the tulip contacts.

3. The structure of claim 2 , wherein the arc eliminator is placed at the service position in a manner that the arc eliminator moves along rails, the shutter-driving device opens a shutter plate obscuring the bushings, and the tulip contacts are inserted into the bushings to be brought into contact with internal conductors.

4. A structure of a switchgear with an arc eliminator in the structure of the switchgear comprising an arc optical sensor to detect an arc, a relay to determine an occurrence or non-occurrence of a fault current by receiving an arc signal detected by the arc optical sensor, and the arc eliminator to earth an arc-generated side bus bar in response to an operating signal with respect to the fault current,
wherein the arc eliminator is coupled to a cradle conveyer to be horizontally movable back and forth within the switchgear so as to be located at a test position or a service position,
wherein the structure of the switchgear is provided on a same panel together with the arc eliminator according to a tie panel structure, and
wherein the tie panel structure is configured such that the arc eliminator is connected between an upstream bus bar and a downstream bus bar, and a tie panel circuit breaker is connected between one of the upstream bus bar and the downstream bus bar and the arc eliminator.

5. A structure of a switchgear with an arc eliminator in the structure of the switchgear comprising an arc optical sensor to detect an arc, a relay to determine an occurrence or non-occurrence of a fault current by receiving an arc signal detected by the arc optical sensor, and an arc eliminator to earth an arc-generated side bus bar in response to an operating signal with respect to the fault current,
wherein the arc eliminator is coupled to a cradle conveyer to be horizontally movable back and forth within the switchgear so as to be located at a test position or a service position,
wherein the structure of the switchgear is provided on a same panel together with the arc eliminator according to a cable insert structure, and
wherein the cable insert structure is configured such that the arc eliminator is connected to a downstream bus bar, and a main circuit breaker is provided between the arc eliminator and the cable insert structure.

Assignees

• Lsis Co Ltd

Inventors

• Zheng Menglei

Classifications

• H02B11/173

  drawer type (H02B11/127 takes precedence) · CPC title

• H02B13/025

  Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect · CPC title

• H02B11/26 Primary

  Arrangements of fuses, resistors, voltage arresters or the like · CPC title

• H01H9/50

  Means for detecting the presence of an arc or discharge · CPC title

• H01H79/00

  Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected {(H01H39/004 takes precedence)} · CPC title