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IM6
12÷36 kV
The on-load switches IM6 series are made up of an epoxy cast resin housing, filled with 150kPa abs. pressured SF6 gas, operative life sealed.The movable contacts are set up on the insulated rotary shaft, inside the cast resin body. The fixed contacts are mounted directly on the cast resin body.The rotary motion of the shaft is made by an operating mechanism placed on the front.The switch has three different positions: close, open and earthed, with an effective locking system that prevents incorrect operations.The switch IM6 series provides the following remarkable characteristics: long service life, free maintenance of active parts, operating safety, limited overvoltage level.
Rated voltage | kV | 12 | 17,5 | 24 | 36 |
Rated power-frequency withstand voltage 50Hz 1min | kV (r.m.s.) | 28 | 38 | 50 | 70 |
Rated lightning impulse withstand voltage | kV (peak) | 75 | 95 | 125 | 170 |
Rated frequency | Hz | 50-60 | |||
Rated current | A | 630 | 400 | ||
Rated short-circuit current | kA | 16 - 1s | 16 - 1s | ||
Peak value | kA | 40 | 40 | ||
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