33kV high voltage high tension 120kN U120B glass insulator

Short Description:

HV IEC u120b disc glass insulator

has become popular in transmission and distribution system. Annealed tough glass is used for insulating purpose. Glass insulator has numbers of advantages over conventional porcelain insulator

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U120B-146

Parameter table

IEC designation		U70B/146	U120B/146
Diameter D	mm	255	255
Height H	mm	146	146
Creepage distance L	mm	320	320
Socket coupling	mm	16	16
Mechanical failing load	kn	70	120
Mechanical routine test	kn	35	60
Wet power frequency withstand voltage	kv	40	40
Dry lightning impulse withstand voltage	kv	100	100
Impulse puncture voltage	P.U	2.8	2.8
Power frequency puncture voltage	kv	130	130
Radio influence voltage	μv	50	50
Corona visual test	kv	18/22	18/22
Power frequency electric arc voltage	ka	0.12s/20kA	0.12s/20Ka
Net weight per unit	kg	3.6	4