Discharge channel initiation and propagation through polymers
- 7 November 2016
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Rapid propagation of breakdown channels through insulation can occur under quite diverse conditions. With relatively low alternating stress 1 kV/mm), breakdown by treeing is the culmination of prolonged degradation by erosion, pitting, or chemical degradation by low energy discharges.1,2 If the stress is raised, pitting occurs more rapidly and need not progress so far before treeing occurs; thus the life of insulation decreases rapidly with increase in stress. With sufficient stress, discharge channels can apparently penetrate insulation without causing previous damage.2Keywords
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