Effects of arcs in enclosures filled with SF6 and steps taken to restrict them in SF6 switchgear

1 May 1975

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems

Vol. 94 (3) , 1051-1060
https://doi.org/10.1109/T-PAS.1975.31939

Abstract

For internal arc faults in metalclad SF6 switchgear the main parameters fault current, arc voltage, fault duration, enclosed volume and material of the enclosure are discussed in relation to test results. The effects in connection with pressure rise and melting through are stated, from which the requirements to be complied with by SF6 installations are derived. Measures to restrict the effects of arc faults are compared and a solution deduced which satisfies the requirements imposed.

Keywords

SULFUR HEXAFLUORIDE
SWITCHGEAR
DIELECTRICS AND ELECTRICAL INSULATION
DIELECTRIC BREAKDOWN
VOLTAGE
MONITORING
TESTING
POWER SYSTEM RELIABILITY
FAULT CURRENTS
INORGANIC MATERIALS

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