Use the characteristic:

1 The specified voltage is 10KV
2 The cable should not be lower than - 20 ℃ while having temperature
3 When holding up( exceed 5S maximum temperature of cable in the past by long lasting timeliness most: Pay and unite polyethylene insulating 250 ℃ High cipher code degrees of polyethylene insulating 150 ℃
4 cable conductor most high to allow working temperature for a long time: Connect 90 ℃ of insulation of polyethylene in parallel High cipher code degrees of polyethylene insulating 75 ℃ 5 cable of crookeds radius of permission: The crooked radius of permission of the cable is too complete to smaller than the cable to use the diameter of round cylinder crookedly while testing .