Effect or Preceding Bias Voltage on Switching-Surge Operation of Spill Gaps and Lightning Arresters
- 1 April 1962
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems
- Vol. 81 (3) , 320-327
- https://doi.org/10.1109/AIEEPAS.1962.4501325
Abstract
Line-dropping tests on the Southern California Edison Company system showed that previously encountered spill-gap operation was not caused by extremely high switching-surge voltages, but by abnornally low sparkover of bushing-mounted gaps. In some cases lightning arresters also operated at abnormally low switching-surge voltages. Laboratory tests showed that a nonuniform gap field and trapped charges on the adjacent porcelain surface rendered spill-gap sparkover susceptible to wave front steepness and, particularly, to preceding voltages of opposite polarity. A gap located remotely from porcelain surfaces was found to be relatively free from these effects.Keywords
This publication has 4 references indexed in Scilit:
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- Line Entrance Gaps for Protection of Substation InsulationTransactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1961
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