HV glass suspension insulator of U300B type

Technical Specifications
Insulator type IEC U300B
Minimum mechanical failing load kN 300
Minimum mechanical residual strength kN 240
Diameter of the insulating part, D mm 320
Spacing, H mm 195
Nominal creepage distance mm 390
Ball and socket coupling, d (IEC 60120) mm 24
Puncture voltage in insulating medium kV 130
50 Hz withstand voltage (dry) kV 82
50 Hz withstand voltage (wet) kV 50
Dry lightning impulse withstand voltage 1.2/50 (+/-) kV 130/130
Impulse puncture test voltage in air kV 365...410
Radio interference voltage at 0.5 MHz dB 60
kV 20
dB 86
kV 40
Weight kg 10.0
All technical requirements and testing are in accordance with IEC standards.