U120B Glass Insulator

Technial Data Type Unit U120B/146 U120B/127 Diameter D mm 255 255 Spacing H mm 146 127 Creepage L mm 320 320 Connection Eye/Ball 16 16 Failing Load kN 120 120 Tension Load kN 60 60 Power Frequency Withstand Voltage (Wet) kV 40 40 Lightning Impulse Withstand Voltage kV 100 100 Impulse Puncture Voltage P.U 2.8 2.8 Power frequency Puncture Voltage kV 130 130 Radio Interference           ( 10kV,1MHz) µV 50 50 Visible Corona Cap/Pin  kV 18/22 18/22 ARC Withstand Voltage s 0.12s/20kA 0.12s/20kA Netweight per Unit kg 4 4