Electrical Porcelain Ceramic Type Pin isolators St-20j for High Voltage

Electrical Porcelain Ceramic Type Pin isolators St-20j for High Voltage

Minimum voltage	Nominal	kV	20
	Puncture voltage in insulating medium	kV	180
	50 Hz withstand voltage (dry)	kV	75
	50 Hz withstand voltage (wet)	kV	60
	Impulse withstand voltage	kV	125
Average annual number of failure, not more than		N/per year	0.0005
Nominal creepage distance, not less than		mm	325±14.5
Minimum mechanical failing load (bending), not less than		kN	13
Weight		kg	1.82±0.1