Investigation of vacuum circuit breakers for high currents

Investigation of vacuum circuit breakers for high currents

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 came...

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Bibliographische Detailangaben
Hauptverfasser: Bouwmeester, C.E., Leusenkamp, M.B.J., Kerkenaar, R.W.P., Merck, W.F.H., Damstra, G.C.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Anodes
Circuit breakers
Coils
Contacts
Eddy currents
Interrupters
Low voltage
Magnetic field measurement
Magnetic fields
Magnetic shielding
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Beschreibung
Zusammenfassung: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/sub 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.
DOI:10.1109/DEIV.2000.879010