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The effects of nonstandard lightning voltage waveshapes on the impulse strength of air gaps

Conference ·
OSTI ID:6119643
; ;  [1];  [2]
  1. Tennessee Technological Univ., Cookeville, TN (United States)
  2. Oak Ridge National Lab., TN (United States)
Sphere-sphere, rod-rod and rod-plane air gaps, each 5-cm long, were tested with lightning surges of eight voltage waveshapes of both polarities. The critical breakdown voltage of the tested air gaps showed a minima at a certain voltage wavefront. Long time delays of breakdown for the fast-front and short time delays for the slow-front waves were observed. These phenomena would significantly affect the insulation coordination of the power apparatus and system. 32 refs.
Research Organization:
Oak Ridge National Lab., TN (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6119643
Report Number(s):
CONF-920202-2; ON: DE92003530
Country of Publication:
United States
Language:
English