SF6 Gas-insulated indoor switch disconnector (SFG), Rated voltage 12KV 17.5KV 24KV.
SFG is an SF6 insulated three-position (close, open,earth on) switch disconnector. All electrically activeparts, including the earthing switch, are in robust epoxy resin housings filled with SF6 (1.45 bar).
Safety: Made to highest IEC standards, non corrosive leak proof enclosure, inspection windows, integrated voltage indicator, interlocking device, gas gauge, etc.
Economy: A life span of minimum 30 years, sealed for life, low maintenance costs
Reliability: Stringent testing of each unit, extremely durable and reliable actuator, worldwide use, etc.
Smart integration: Modular construction, compact size, easy
Ratings | Unit | Value | Value | Value |
Rated voltage | kV | 12 | 17.5 | 24 |
Rated lighting impulse withstand | kV | 75 | 95 | 125 |
Across the isolating distance | kV | 85 | 110 | 145 |
Rated short duration power frequency withstand | kV | 28 1) | 38 1) | 50 |
Across the isolating distance | kV | 32 1) | 45 1) | 60 |
Rated frequency | Hz | 50 / 60 | 50 / 60 | 50 / 60 |
Rated current Ir | A | 800 | 800 | 630 |
Rated short time withstand current | kA | 25 | 20 | 20 |
Rated duration of short circuit | s | 2 | 3 | 3 |
Rated peak withstand current | kA | 62.5 | 50 | 50 |
