Anti-pollution Suspension Glass Insulator

Fog-profile toughened glass discs from 70 kN to 550 kN, with 400 mm to 710 mm of creepage for polluted routes.

Failing load
70–550 kN
Disc diameter
255–390 mm
Creepage
400–710 mm
Coupling
16–32 mm

The fog profile is a deeper shed on the same disc diameter, which lengthens the creepage path without widening the string. It is the profile used where the route passes salt spray, cement dust or fertiliser plants.

Toughened glass fails by shattering. A damaged disc is visible from the ground and the string keeps working until it is replaced, so inspection does not need test equipment.

The range runs from 70 kN to 550 kN, in discs from 255 mm to 390 mm in diameter.

Specifications

Electromechanical and electrical values for each type. Fog-profile discs, 255 mm to 390 mm diameter.

TypeMechanical failing loadkNDisc diametermmSpacingmmCreepagemmCouplingmmDry power-frequency withstandkVWet power-frequency withstandkVLightning impulse withstandkVPower-frequency puncturekVUnit weightkg
U70BLP702801464501685501251305.3
U70BLP1702551464001675451101305
U70BLP2703201465501690551401308.5
U100BLP1002801464501685501251305.6
U100BLP11002551464001675451101305
U100BLP21003201465501690551401308.6
U120BP1202801464501685501251305.6
U120BP11202551464001675451101305
U120BP21203201465501685501301308.6
U160BMP1603201555502090551401308.8
U160BMP11602801554502085501301307
U160BLP1603201705502090551401308.9
U160BLP11602801704502085501301307.1
U160BSP1603201465502085501301308.5
U160BSP11602801464502085501301306.9
U210BP2103201705502090551401309.4
U210BP12102801704502085501401307.3
U240BP2403201705502490551401309.7
U300B130032019555024905514013011.5
U300BP30038019569024956014513013.9
U300BP130038019563524956014513013.2
U420BP420380205620281006015013015.8
U550BP550390240710321006015013020.5

Radio interference ≤50 μV at 10 kV and 1 MHz; visible corona 18/22 kV pin and cap; power-frequency arc test 0.12 s at 20 kA; impulse overvoltage puncture withstand 2.8 p.u. The catalogue also lists a 240 kN disc at 280 mm diameter with 450 mm creepage under the same U240BP designation.

Choosing a Type

  • Fog Profile

    The deeper shed gives 400–710 mm creepage on a 255–390 mm disc. The standard profile reaches about 320 mm on the same diameter.

  • Coupling Size

    16 mm covers the 70–120 kN discs; 20 mm and 24 mm carry the 160–300 kN units, 28 mm and 32 mm the 420 kN and 550 kN discs.

  • Spacing

    Spacing is the height of one disc, so it sets how long a string gets: 23 discs at 146 mm make 3.36 m of string.

Every disc is routine-tested before it is packed, and each type is type-tested before it is offered for supply.

Ask about Anti-pollution Suspension Glass Insulator

Send the type designation, the quantity and the standard the project is working to. We reply with a price and a delivery date.

We usually reply within one working day.