Surface spark-over voltage on solid insulator in sub-cooled liquid nitrogen


Surface spark-over voltages on solid insulators in boiling and sub-cooled liquid nitrogen are studied under ac, dc and impulse voltage. The insulator structure used is a model of a power cable end. In the structure, static capacitance is formed between outer surface and inner conductor of the insulator. The spark-over voltages for several insulators were… (More)


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