Table 3 Power frequency flashover test results of deep under-ribs and alternating shed insulator under clean and polluted conditions.

From: Performance analysis of high voltage disc insulators with different profiles in clean and polluted environments using flashover, withstand voltage tests and finite element analysis

Test name

Type of insulator

Flashover voltage and corresponding leakage current

Clean insulator

Polluted insulator

Power frequency flashover test

Deep under-ribs insulator

106.08 kV

2.920 mA

101.02 kV

3.736 mA

Alternating shed insulator

133 kV

2.606 mA

128.7 kV

3.557 mA

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