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Hi, For 3Cx 240 11kV CU/XLPE/SWA/PVC cable what is the acceptable value ohm value for DC Sheath test?

I am proceeding the DC sheath test as per IEC9 standard.

but unfortunately the standard is not specifying any limit value or base value or safe value.

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Question added by mohmmad anas saidalavi k k koduvaparamban koderi , Project Engineer Electrical , Al Khalejia Co. For Mech. & Electrical Proj.(KAHROMIKA)
Date Posted: 2016/08/29
SEKHAR BHATTACHARYA
by SEKHAR BHATTACHARYA , TECHNICAL ADVISER , LARSEN N TOUBRO SARGENT LUNDY LIMITED VADODARA INDIA

The Ohmic valeu is only a indication of healthiness and reference-the real test is that 10KV DC should be able to withstand for 5 minutes and that is the test for jacket/sheath  integrity test.-off course as a ref you have to take values of IR also after HV test.

Hossam Eldin Said Soliman
by Hossam Eldin Said Soliman , MEP Manager , Saudi technical company

Insulation Resistance (Megger) Test

 

Cable voltage designation (V)     Test Voltage             Minimum acceptable test value (Megohm)

 

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