Top quality toughened disc glass insulator: U70BL

Nowadays glass insulator has become popular in transmission and distribution network. Annaled toughened disc glass insulator has numbers of advantages over conventional porcelain insulators.

Advantages of Glass Insulator:
1. High dielectric strength
2. High resistivity
3. High tensile strength
4. Lower absorption of heat
6. Easily detection of internal defects like impurities and air bubble
7. Long service life due to lower aging characteristic
8. Cheaper in price

Model		U40B/110	U70B/140	U100B/140	U120B/146	U160B/170
Main dimension, mm	D	178	255	255	255	280
Main dimension, mm	H	110	140	146	146	170
Creepage distance (mm)		185	320	320	320	400
Socket Coupling (mm)		11	16	16	16	20
Mechanical failing load (mm)		40	70	100	120	160
Mechanical routine test (kN)		20	35	50	60	80
Wet power frequency withstand voltage(kV)		25	40	40	40	45
Dry lightning impulse withstand voltage (kV)		50	100	100	100	110
Impulse puncture voltage (P.U)		2.8	2.8	2.8	2.8	2.8
Power frequency puncture voltage (kV)		90	130	130	130	130
Radio influence voltage (μV)		50	50	50	50	50
Corona visual test (kV)		18/22	18/22	18/22	18/22	18/22
Power frequency electric arc voltage		0.12s/20kA	0.12s/20kA	0.12s/20kA	0.12s/20kA	0.12s/20kA

Video loading, please wait…