Very low frequency (VLF) technology can effectively evaluate the damp cable aging condition, and IEEE 400.2 formulate the dielectric diagnostic indicators and standards of the VLF technology, but this technology is not popular in Chinese nuclear power station. The paper has carried on 0.1Hz VLF dielectric loss test, insulation resistance test on three 10kV XLPE power cables which have same specifications but different operation environment. Combined those electric test with the cable history environment information, the result shows it’s very useful for the cable comprehensive performance evaluation.

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