Post arc current of vacuum interrupter after large current interruption

Author

Hakamata, Y. ; Kurosawa, Y. ; Natsui, K. ; Hirasawa, K. ; Kurita, K.

Author_Institution

Hitachi Ltd., Tokyo, Japan

Volume

3

Issue

4

fYear

1988

fDate

10/1/1988 12:00:00 AM

Firstpage

1692

Lastpage

1697

Abstract

Postarc current characteristics of a vacuum interrupter have been examined under a condition of high-current interruption. A measurement technique was developed in which a shunt for measuring postarc current was set in a synthetic test circuit voltage source. Postarc current was measured after a 20-57 kA current interruption. The magnitude was greatly influenced by the rate of current decline. Residual resistance between electrodes was calculated from the measured values of recovery voltage and postarc current. The recovery of residual resistance was very rapid immediately after current zero and become slow later

Keywords

circuit breakers; electric current measurement; vacuum apparatus; 20 to 57 kA; high-current interruption; postarc current measurement; recovery voltage; residual resistance; synthetic test circuit voltage source; vacuum interrupter; Circuit breakers; Circuit testing; Current measurement; Electrical resistance measurement; Electrodes; Interrupters; Mathematical model; Measurement techniques; Vacuum arcs; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.193973

Filename

193973