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Environmental factors in the tracking performance of plastic insulators (TM-ETR-32)

Last updated on 23 April 2013 10:02

Tracking on plastics insulators is caused by surface leakage current and ‘drybanding’. The leakage current is due to wetting of both soluble and insoluble pollution by rainfall, fog or dew formation. For tracking to occur, the leakage current must be in the range 0.5-5mA. The life of...

Author(s): Bradwell A.

Organisation(s): British Rail Research ;

1974

United Kingdom

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