33kv High voltage U70 disc glass insulator

33kv High voltage U70 glass insulator Video:

33kv High voltage U70 glass insulator description:

IEC designation	U70B/140
Diameter D( mm )	255
Socket coupling( mm )	140
Creepage distance L( mm )	320
Socket coupling( mm )	16
Mechanical failing load( mm )	70
Mechanical routine test( kN )	35
Wet power frequency withstand voltage( kV )	40
Dry lightning impulse withstand voltage( kV )	100
Impulse puncture voltage( P.U )	2.8
Power frequency puncture voltage( kV )	130
Radio Influence voltage( μV )	50
Corona visual test( kV )	18/22
Power frequency electric arc voltage	0.12s/20ka
Net weight per unit( kg )	3.6

IEC designation		U40B/110	U70B/146	U70B/127	U100B/146	U100B/127	U120B/127	U120B/146	U160B/146	U160B/155	U160B/170
Diameter D	mm	178	255	255	255	255	255	255	280	280	280
Height H	mm	110	146	127	146	127	127	146	146	155	170
Creepage distance L	mm	185	320	320	320	320	320	320	400	400	400
Socket coupling	mm	11	16	16	16	16	16	16	20	20	20
Mechanical failing load	kn	40	70	70	100	100	120	120	160	160	160
Mechanical routine test	kn	20	35	35	50	50	60	60	80	80	80
Wet power frequency withstands voltage	kv	25	40	40	40	40	40	40	45	45	45
Dry lightning impulses withstand voltage	kv	50	100	100	100	100	100	100	110	110	110
Impulse puncture voltage	P.U	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Power frequency puncture voltage	kv	90	130	130	130	130	130	130	130	130	130
Radio Influence Voltage	μv	50	50	50	50	50	50	50	50	50	50
Corona visual test	kv	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22
Power frequency electric arc voltage	ka	0.12s/20kA	0.12s/20kA	0.12s/20kA	0.12s/20kA	0.12s/20kA	0.12s/20Ka	0.12s/20Ka	0.12s/20Ka	0.12s/20Ka	0.12s/20Ka
Net weight per unit	kg	2.1	3.6	3.5	4	4	4	4	6.7	6.6	6.7