Investigation of vacuum circuit breakers for high currents

Author

Bouwmeester, C.E. ; Leusenkamp, M.B.J. ; Kerkenaar, R.W.P. ; Merck, W.F.H. ; Damstra, G.C.

Author_Institution

Holec Low Voltage, Hengelo, Netherlands

Volume

2

fYear

2000

fDate

2000

Firstpage

392

Abstract

The aim of the investigation is to determine the axial magnetic field (AMF), required to keep vacuum arcs up to 100 kA top value in the diffuse mode. The magnetic field is generated by the main current flowing through coils around the vacuum interrupter (VI). The arc was observed with a digital camera in order to relate arc constriction and arc voltage. The 100 kA_peak arc could be kept diffuse at 5.5 mT/kA. Next, the influence of contact speed was investigated. The dependence of interruptible current on pressure and transient recovery voltage (TRV) was determined

Keywords

magnetic fields; vacuum arcs; vacuum circuit breakers; vacuum interrupters; 100 kA; arc constriction; arc voltage; axial magnetic field; contact speed; diffuse mode; digital camera; high currents; interruptible current; magnetic field; pressure; transient recovery voltage; vacuum circuit breakers; vacuum interrupter; Anodes; Circuit breakers; Coils; Contacts; Eddy currents; Interrupters; Low voltage; Magnetic field measurement; Magnetic fields; Magnetic shielding;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2000. Proceedings. ISDEIV. XIXth International Symposium on

Conference_Location

Xi´an

Print_ISBN

0-7803-5791-4

Type

conf

DOI

10.1109/DEIV.2000.879010

Filename

879010