Customization: | Available |
---|---|
Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Manual Type |
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Ratings | Unit | Value | Value |
Rated voltage | kV | 12 | 24 |
Rated lighting impulse withstand voltage Common value | kV | 75 | 125 |
Across the isolating distance | kV | 85 | 145 |
Rated short duration power frequency withstand voltage Common value | kV | 28 | 50 |
Across the isolating distance | kV | 32 | 60 |
Rated frequency | Hz | 50/60 | 50/60 |
Rated current | A | 800 | 630 |
Rated short time withstand current | kA | 25 | 20 |
Rated duration of short circuit | s | 2 | 3 |
Rated peak withstand current | kA | 62.5 | 50 |
Making and breaking tests (IEC 60265-1, Class E3) for the SFG switch | |||
Mainly active load current | A | 800 | 630 |
Closed-loop distribution circuit current | A | 800 | 630 |
Cable charging current | A | 50 and 10 | 50 and 10 |
Line charging current | A | 20 | 20 |
Cable and line charging current under earth faults | A | 87 | 87 |
Short circuit making current | kA | 62.5 | 50 |
Making and breaking tests (IEC 60420) for the SFG switch - fuse combination | |||
Withstanding and making the cut-off current of the fuse | kA | 25 | 20 |
Breaking test with long prearcing time of fuse | Ok | Ok | |
Breaking capacity at rated transfer current | A | 1530 | 920 |
Mechanical performance | |||
Mechanical endurance of switch close/open | Operations | 1000 | 1000 |
Mechanical endurance of switch open/earth | Operations | 1000 | 1000 |
Ambient temperature | |||
Maximum value | ºC | 40 | 40 |
Maximum value of 24 h mean | ºC | 35 | 35 |
Minimum value | ºC | -5 | -5 |
Altitude above sea level | m | < 1000 | < 1000 |