Covers for air circuit-breakers
These covers are designed to complete air circuit-breakers. Air circuit-breakers provide reliable operation of high voltage power lines as well as stability of power systems. The covers conform to ГОСТ 5862-79. Insulating part is made of the ceramic electrotechnical material of subgroup of 110 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% | ||||||||
| П 525/210 О (глинозем) | НИЮД.757523.074 | ГОСТ 5862-79 | -- | 75 | 525 | 390 | 66,0 | 6,6 |  |
| ППН-780/310 О | НИЮД.757523.071 | ГОСТ 5862-79 | -- | 145 | 780 | 510 | 132,5 | 13,2 | |
| ППН-1080/100 О | НИЮД.757523.072 | ГОСТ 5862-79 | -- | 231 | 1080 | 290 | 72,0 | 7,2 | |
| ППН-1260/100 О | НИЮД.757523.073 | ГОСТ 5862-79 | -- | 285 | 1260 | 290 | 86,0 | 8,6 | |
| ППН-1320/310 О | НИЮД.757523.070 | ГОСТ 5862-79 | -- | 290 | 1320 | 520 | 228,0 | 22,8 | |
| Покрышка | НИПГ.757524.001 (3993) | ГОСТ 5862-79 | 25 | 45 | 350 | 142 | 5,2 | 0,52 | |
| П 395/50 О | НИЮД.895 (глазурь неокр.) -01 (глазурь коричн.) | ГОСТ 5862-79 | -- | 500 | 395 | 205 | 17,0 | 1,7 | |
| П 395/50-1 О | НИЮД.895-02 (глазурь неокр.) -03 (глазурь коричн.) | ГОСТ 5862-79 | -- | 500 | 395 | 205 | 17,0 | 1,7 | |
| П 320/80 О | НИЮД.894 | ГОСТ 5862-79 | -- | 500 | 320 | 205 | 13,0 | 1,3 | |