Covers for SF6 circuit-breakers
Reinforced ceramic covers . These covers are designed for breakers of ВГУ and ВГУС type for 110-750 kV voltage. They are designed for containing breakers electrical parts and protecting them from weather and mechanical impact. Conform to ТУ У 3.88-00214652-096-95 standards. The insulating part is made of ceramic electrotechincal material of subgroup of 130.1 ГОСТ 20419-83.
| Type of insulator | Denotation of draft | ГОСТ, ТУ | Nominal system voltage, kV | Creepage distance, no less than, cm | Н, mm | D External, mm | Weight, kg | Sketch | |
| Nominal | rejection ±10% | ||||||||
| ПВЭГ - 110-О | ИМЖК.686174.030СБ | ТУ У 3.88-00214652-096-95 | 110 | 300 | 1398 | 485 | 221,0 | 22,1 |  |
| ПВЭГ - 180-О | ИМЖК.686174.030-02СБ | ТУ У 3.88-00214652-096-95 | 180 | 450 | 1948 | 485 | 295,0 | 29,5 | |
| ПВЭО - 110-О | ИМЖК.686174.034СБ | ТУ У 3.88-00214652-096-95 | 110 | 300 | 1318 | 530 | 261,0 | 26,1 | |
| ПВЭО - 220-О | ИМЖК.686174.021СБ | ТУ У 3.88-00214652-096-95 | 220 | 580 | 2320 | 452 | 326,0 | 32,6 | |