| Popis: |
Sympathetic breakdown is observed between adjacent gaps in ambient air up to 0.4 m apart, and is found to be due to ultraviolet light. The ultraviolet light generated by the first gap breakdown initiates a breakdown in the second gap. The initiation time depends on the electric field in the second gap. Sympathetic breakdown can be induced in a gap having a field as low as 50% of the normal breakdown field, but the initiation time becomes relatively large (0.1 ..mu..S). At a spacing of 30 mm between the gaps, the first gap must break down at a voltage greater than 500 V to initiate the breakdown of the second gap. At 1600 V sympathetic breakdown operates over a distance of at least 0.4 m. Sympathetic breakdown is thought to play a major role in the breakdown of the lightning arrestor connector. 10 figs. (LAC) |
