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Thanks to its excellent mechanical strength and anti-pollution performance, the U300B Disc Suspension Toughened Glass Insulator is well-suited for the following conditions:
Voltage Levels: Suitable for 110kV, 220kV, and even 500kV high voltage (HV) and extra-high voltage (EHV) transmission lines.
Environmental Conditions:
Heavily Polluted, Coastal, and Industrial Areas: With a long creepage distance of 485mm and a glass surface that resists contamination, it effectively prevents "pollution flashover" in environments with salt fog, chemical pollutants, or heavy dust.
Various Climatic Conditions: The design ensures stable operation in complex weather conditions such as rain, snow, and lightning.
IEC Standard: U300B
| Spacing (S) | 195mm |
| Diameter (D) | 320mm |
| Creepage distance (L) | 485mm |
| Socket coupling | 24mm |
| Mechanical failing load | 300kN |
| Mechanical residual strength | 240kN |
| Dry power frequency withstand voltage | 75kV |
| Wet power frequency withstand voltage | 45kV |
| Dry lightning impulse withstand voltage | 110kV |
| Power frequency puncture voltage | 130kV |
| RIV test voltage rms to ground Maximum RIV at 1000 kHz |
10 kV 50 μV |
| Corona visual test P/C | 18/22 KV |
| Power frequency electric arc voltage | 0.12s/20kA |
| Net weight | 10.6kg |
| Carton Quantity | 3pcs |
Manufactured in accordance with IEC60383-1:2023，MOD / GB/T1001.1
