| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Electric Type |
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Three phases indoor use AC high voltage load switch for breaking and making the circuit of 50Hz, 12KV system under rated loading, closed loop current, no-loading transformer, cable charged current and short circuit current.
Ambient air temperature: upper limit +40ºC; Lower limit -25 (allowing storage and transportation at -30 ° C). The average value within 24h is not higher than +35ºC
Altitude: no more than 1000m;
Air relative humidity: the daily average is not more than 95%, the monthly average is not more than 90~%
Earthquake intensity: no more than 8 degrees
The surrounding air is not significantly polluted by corrosive and flammable gases and water vapor
No frequent violent vibration
Pollution level: ll level
Static contact insulation cover to prevent the arc in the cabinet
Reliable mechanical locking method to meet the five prevention requirements
Electric operation Manual operation and AC DC dual use
With a unique valve structure load switch, the back door automatically isolates the fracture after opening
| Name | Unit | Data | ||
| FN12-12D | FN12-12D(R)D | |||
| Rated voltage | KV | 12 | ||
| Rated frequency | Hz | 50 | ||
| Rated current | A | 630 | 125 | |
| Lighting impulse resisting voltage | KV | To earthing.interphase 75 isolation break 85 | ||
| 1min power frequency withstand voltage | KV | To earthing.interphase 42 isolation break 48 | ||
| Rated heat-stability current | KA | 20(4S) | ||
| Rated machine-stability current | KA | 50 | ||
| Rated closing current(peak) | KA | 50 | 50 | |
| Rated short-circuit breaking current (prospective value) | KA | 31.5 | ||
| Max.critical breaking current | A2S | fuse box characterisitic curve | ||
| Min.Breaking current | KA | fuse box characterisitic curve | ||
| Rated transfer current | KA | 1.5 | ||
| Max.breaking current(reference value) | KA | 1.8 | ||
| Braking no-load transformer capacity | kva | 1250 | ||
| Rated cable charging current | A | 10 | ||
| Rated power load current breaking times | time | ≥100 | ||
| Switch-off time of rated power load current switch on-and-off | S | >0.06 | ||
| Rated transfer current | KA | 20(2S) | 20(2S) | |
| Rated transfer current | KA | 50 | 50 | |
| Motor operating power voltage | V | Pay 110,220 direct current | ||
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