High Voltage Toughened Glass Insulators

Model Standard type

Wires in high voltage overhead transmission and distribution lines are fixed and insulated using glass disc insulators. At various voltage levels, several kinds of glass disc insulators are employed.

product details

product description

Due to the high mechanical strength of the surface layer of the glass insulator, the surface is not prone to cracks. The electrical strength of glass generally remains unchanged throughout the operation period, and its aging process is much slower than that of porcelain, so glass insulators are mainly scrapped due to self-damage, which occurs within the first year of operation, but the defects of porcelain insulators are only after a few years of operation. began to be discovered years later.

Product Parameter

Product Model		U40B/110	U70B/140	U100B/140	U120B146	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 routne test(kN)		20	35	50	60	80
Wetpower frequency withstand voltage(kV)		25	40	40	40	45
Dry lightning lipulse withstand voltage(kV)		50	100	100	100	110
Impuise puncture volltage(P.U)		2.8	2.8	2.8	2.8	2.8
Power frequency puncture vollage (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