Sparkover performance and gap factors of air gaps below 1 meter: Analysis of published data. Final report
- Electric Power Research Inst., Lenox, MA (United States)
This report is an account of a literature search on sparkover performance of various air gaps shorter than 1 meter. The report is a part of the Live Working 2000 project. The objective of the literature search was to locate and analyze published data on sparkover performance of air gaps below 1 meter, with special emphasis on live working. Published data dating back to 1930`s are analyzed for a variety of air gaps: rod-to-plane; rod-to-rod; sphere-to-plane; bundle-to-plane; hoop-to-plane, conductor-to-rod; and worker-to-tower. Data for all voltage types, and both polarities (where applicable) are analyzed: power frequency alternating current; direct current; lightning; fast front impulse; and switching impulse. As is the case for longer air gaps and higher voltages, several accurate empirical formulae for calculation of the sparkover voltage have been developed, and are analyzed. Also, the rod-to-plane air gap is used in this report as the reference gap for calculation of gap factors.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Electric Power Research Inst., Lenox, MA (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 10140598
- Report Number(s):
- EPRI-TR-106335; ON: UN99003332; TRN: AHC29927%%286
- Resource Relation:
- Other Information: PBD: Mar 1998
- Country of Publication:
- United States
- Language:
- English
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