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Glass Insulators

U120B 120 kN Glass Suspension Insulator

Product Overview

U120B 120 kN Glass Suspension Insulator.

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Technical Parameters

IEC designationU70B/146U120B/146
Diameter Dmm255255
Height Hmm146146
Creepage distance Lmm320320
Socket couplingmm1616
Mechanical failing loadkn70120
Mechanical routine testkn3560
Wet power frequency withstand voltagekv4040
Dry lightning impulse withstand voltagekv100100
Impulse puncture voltageP.U2.82.8
Power frequency puncture voltagekv130130
Radio influence voltageμv5050
Corona visual testkv18/2218/22
Power frequency electric arc voltageka0.12s/20kA0.12s/20Ka
Net weight per unitkg3.64

Technical Drawing

U120B 120 kN Glass Suspension Insulator — technical drawing

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