The energy absorption capability and time-to-failure of varistors used in station-class metal-oxide surge arresters
Journal Article
·
· IEEE Transactions on Power Delivery
- Ontario Hydro Technologies, Toronto, Ontario (Canada)
Varistors for use in station-class surge arresters were tested to destruction to determine their energy absorption capability at current levels ranging from 0.8 A{sub peak} to 35 kA{sub peak}. Typical mean values increased from 400--600 J/cm{sup 3} at the lowest current end to 1,600--2,000 J/cm{sup 3} at 35 kA{sub peak}. The product of the mean time-to-failure and the mean current was found to be a constant over five orders of magnitude. The varistor failure mode was found to be a characteristic of the current magnitude. It is recommended that standard test methods be developed for the energy absorption capability of metal-oxide surge arresters, and be included in relevant standards.
- OSTI ID:
- 477202
- Report Number(s):
- CONF-960725-; ISSN 0885-8977; TRN: IM9724%%79
- Journal Information:
- IEEE Transactions on Power Delivery, Vol. 12, Issue 1; Conference: 1996 Summer meeting of the IEEE Power Engineering Society, Denver, CO (United States), 28 Jul - 1 Aug 1996; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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