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Wiring Riddle No.11 - XLPE cable hipot test effects
we will take the readings of a xlpe cables  insulation resistance  by megger after and before hi pot .we found after hipot reading is less than before .why?
Author : george.v.sebastian - From: India
 
#1
Wed, November 14th, 2012 - 03:30
According to standards (ieee,…) , the DC hipot test can be a destructive test for service aged cables and should not be done, particularly in XLPE type. In addition the high voltage test can be caused some micro short circuit path in insulation or surface moisture which may be changed the insulation resistance test results. 
Author : Hamid - From: Iran
 
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