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.
| Type | Mechanical failing loadkN | Disc diametermm | Spacingmm | Creepagemm | Couplingmm | Dry power-frequency withstandkV | Wet power-frequency withstandkV | Lightning impulse withstandkV | Power-frequency puncturekV | Unit weightkg |
|---|---|---|---|---|---|---|---|---|---|---|
| U70BLP | 70 | 280 | 146 | 450 | 16 | 85 | 50 | 125 | 130 | 5.3 |
| U70BLP1 | 70 | 255 | 146 | 400 | 16 | 75 | 45 | 110 | 130 | 5 |
| U70BLP2 | 70 | 320 | 146 | 550 | 16 | 90 | 55 | 140 | 130 | 8.5 |
| U100BLP | 100 | 280 | 146 | 450 | 16 | 85 | 50 | 125 | 130 | 5.6 |
| U100BLP1 | 100 | 255 | 146 | 400 | 16 | 75 | 45 | 110 | 130 | 5 |
| U100BLP2 | 100 | 320 | 146 | 550 | 16 | 90 | 55 | 140 | 130 | 8.6 |
| U120BP | 120 | 280 | 146 | 450 | 16 | 85 | 50 | 125 | 130 | 5.6 |
| U120BP1 | 120 | 255 | 146 | 400 | 16 | 75 | 45 | 110 | 130 | 5 |
| U120BP2 | 120 | 320 | 146 | 550 | 16 | 85 | 50 | 130 | 130 | 8.6 |
| U160BMP | 160 | 320 | 155 | 550 | 20 | 90 | 55 | 140 | 130 | 8.8 |
| U160BMP1 | 160 | 280 | 155 | 450 | 20 | 85 | 50 | 130 | 130 | 7 |
| U160BLP | 160 | 320 | 170 | 550 | 20 | 90 | 55 | 140 | 130 | 8.9 |
| U160BLP1 | 160 | 280 | 170 | 450 | 20 | 85 | 50 | 130 | 130 | 7.1 |
| U160BSP | 160 | 320 | 146 | 550 | 20 | 85 | 50 | 130 | 130 | 8.5 |
| U160BSP1 | 160 | 280 | 146 | 450 | 20 | 85 | 50 | 130 | 130 | 6.9 |
| U210BP | 210 | 320 | 170 | 550 | 20 | 90 | 55 | 140 | 130 | 9.4 |
| U210BP1 | 210 | 280 | 170 | 450 | 20 | 85 | 50 | 140 | 130 | 7.3 |
| U240BP | 240 | 320 | 170 | 550 | 24 | 90 | 55 | 140 | 130 | 9.7 |
| U300B1 | 300 | 320 | 195 | 550 | 24 | 90 | 55 | 140 | 130 | 11.5 |
| U300BP | 300 | 380 | 195 | 690 | 24 | 95 | 60 | 145 | 130 | 13.9 |
| U300BP1 | 300 | 380 | 195 | 635 | 24 | 95 | 60 | 145 | 130 | 13.2 |
| U420BP | 420 | 380 | 205 | 620 | 28 | 100 | 60 | 150 | 130 | 15.8 |
| U550BP | 550 | 390 | 240 | 710 | 32 | 100 | 60 | 150 | 130 | 20.5 |
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.

