Experimental investigation on arc motion of MCCB with different configurations of arc chamber using optical fiber measurement system

Author

Degui, Chen ; Hongwu, Liu ; Zhipeng, Li ; Xingwen, Li ; Park, Hongtae

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., China

fYear

2004

fDate

20-23 Sept. 2004

Firstpage

341

Lastpage

346

Abstract

In order to get the knowledge of gas dynamics in interruption process of molded case circuit breakers, a flexible arc quenching chamber model with different configurations is proposed. The two-dimensional optical fiber digital testing system has been used to measure the arc current, arc voltage, pressure in the quenching chamber, and the movement of the arc when interrupting the 10 kA prospective current. The influence of venting conditions, the configuration of splitter plates and gassing material characteristics on the interruption process has been investigated. It demonstrates that the performance can be improved effectively by the ways of closing the bottom venting, adopting shorter splitter plate configuration, and POM and Nylon gassing materials.

Keywords

circuit-breaking arcs; gas blast circuit breakers; interrupters; optical fibre testing; polymers; quenching (thermal); 10 kA; POM; arc current; arc motion; arc pressure; arc voltage; flexible arc quenching chamber model; gas dynamics; gassing material properties; interruption process; molded case circuit breakers; nylon; optical fiber measurement system; shorter splitter plate configuration; two-dimensional optical fiber digital testing system; Circuit breakers; Circuit testing; Current measurement; Motion measurement; Optical fiber testing; Optical fibers; Optical materials; Pressure measurement; System testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 2004. Proceedings of the 50th IEEE Holm Conference on Electrical Contacts and the 22nd International Conference on Electrical Contacts

Print_ISBN

0-7803-8460-1

Type

conf

DOI

10.1109/HOLM.2004.1353139

Filename

1353139