Title :
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
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 kApeak 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;
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
DOI :
10.1109/DEIV.2000.879010
