Tracking Index Apparatus

Model No. HV-EXP2336

Description
Tracking Index Apparatus - For Electrical Lab Training Breakdown of any insulating material generally occurs either through its volume or over its surface, or in both ways. Surface failures may arise from flash over, or from progressive degradation of the insulation surfaces by small localized sparks. Such sparks are the result of breaking up of a surface film of conducting contaminant on the insulation by the heat of a leakage current passing through it. Rapid breaks in the leakage current produce an over-voltage at the site of the discontinuity and an electric spark is caused. Repeated sparks at any one point may lead to setting up of a carbon track between points at different potentials. This process is known as Tracking. Insulating parts retaining live parts in position shall have adequate resistance to tracking if they are exposed to excessive deposition of moisture or dirt in normal use. ;.
 
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