Specifications
1.rated voltage 12KV
2.FK(R)N12-12 high voltage load switch
3.suitable to three phase AC 5HZ power distribution system
FKN12-12 load braek switch
Introduction:
1.FK(R)N12A-12D compressed-air load switch- fuse protector combination unit is used in the 3 phase power distribution system with rated voltage up to12KV.
2.Being the control and protection unit of ring-net, double radiation power supply unit and electrical equipments such as transformer, electrical cable, it's especially suitable to city and rural substation and box type substation.
3.FKN12-12D compressed-air load switch can open and close the load current and overload current, as well as can open and close the load current, overload current and the breaking short-circuit current.
Operating environmental conditions:
1.Altitude: ≤1000m
2.ambient air temperature: not higher than +40°C,not lower than-25°C
3.Relative humidity: daily mean is not more than 95%, monthly mean is not more than 90%
4.Earthquake intensity: not more than 8°
5.no fire, explosion hazard, chemical etching and intense vibration
6.Pollution grade: II
7. Ambient air shouldn't be polluted by corrosive or flammable gas and vapor.
Model number:
FKN12-12D/100-31.5
FKN12-12D/630-31.5
The meaning of Model number
The main technical parameters:
Item | Unit | Data | |||
FKN21-12D/T630-20 | FKRN21-12D/T125-31.5 | ||||
Rated voltage | kV | 12 | |||
Rated frequency | Hz | 50 | |||
Rated current | A | 630 | 125 | ||
Rated insulation level | 1min power frequency with stand voltage(Phase to earth, between poles, open contacts) | kV | 42 | 48 | |
Rated lightning impulse withstand voltage(Phase to earth, between poles, open contacts) | kV | 75 | 85 | ||
Rated peak withstanding current | kA | 50 | |||
4S rated short-time withstanding current | kA /s | 20 | / | ||
Earthing switch rated short-time withstanding current/Rated short-circuit duration time | kA/s | 20/4 | / | ||
Rated breaking current | Power load breaking current | A | 630 | / | |
Close loop breaking current | A | 630 | / | ||
Breaking cable charge current | A | 31.5 | / | ||
Breaking no-load transformer capacity | kVA | 1250 | 1250 | ||
Rated short-circuit breaking current | kA | / | 31.5 | ||
Breaking transfer current | A | / | 3150 | ||
Fuse type | / | SDLAJ-12,SFLAJ-12 | |||
Shocking input energy | J | / | 3-5 | ||
Rated short-circuit making current | kA | 50 | 80(expected) | ||
Earthing switch rated withstand current(peak) | kA | 50 | 50 | ||
Earthing switch 4S rated short-time withstand current | kA | 20 | 20 | ||
Auxiliary circuit rated voltage | V | 220:110 | 220:110 | ||
Mechanical life(grade M2) | times | 20000 | |||
Ordering Information
Please indicate the following items when order:
Type, name and parameters and quantity
Disconnector is needed or not.
If choose Combination of electrical of Vacuum Load switch and fuse, pls indicate rated current of fuse.
Rated of operation mechanism
Name and quantity of spare parts.
Note: Customized products are available per your requirements
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