HV glass suspension insulator of U70BS/U70BL type

Technical Specifications
Insulator type IEC U70BS U70BL
 Minimum mechanical failing load kN 70
Minimum mechanical residual strength kN 56
Diameter of the insulating part, D mm 255
Spacing, H mm 127 146
Nominal creepage distance mm 320
 Ball and socket coupling, d (IEC 60120) mm 16
Puncture voltage in insulating medium kV 130
50 Hz withstand voltage (dry) kV 70
50 Hz withstand voltage (wet) kV 45
Dry lightning impulse withstand voltage 1.2/50 (+/-) kV 105/105
Impulse puncture test voltage in air kV 280...310
Radio interference voltage at 0.5 MHz dB 60
kV 20
dB 86
kV 25
Weight kg 3.6
All technical requirements and testing are in accordance with IEC standards.