Model and meaning

Description: The spring mechanism is divided into manual operation spring mechanism, electrically operated spring mechanism.

The main purpose

FKN12A-12D compressor load switch, FKRN12A-12D series compressor load switch - fuse combinations for 12KV and below the three-phase power distribution systems and components for the control and protection of main transformers, cables, overhead lines and other electrical equipment by: especially suitable area network, rural power substation and terminal box-type substation. And applies to the ring, double radiation power supply control and protection unit.

FKN12A-12D series compressor load switch can division load current and overload current.

FKRN12A-12D series compressor load switch - fuse combinations can division and the load current, overload current, short-circuit breaking current.

Environmental conditions

1, ambient air temperature limit: + 40 ℃

Lower limit: -25 ℃

2, the height above sea level does not exceed 1000m;

3, relative humidity on average less than 95%, on average less than 90%.

4 earthquake intensity does not exceed 8 degrees;

5, no fire and explosion danger, chemical corrosion and severe vibration;

6, the contamination level: Ⅱ

Structural features

1, load switch, earthing switch, fuse and institutions in a framework that can be flexibly combined, compact structure, small size, convenient and easy to install;

2, the fracture is direct-acting layout, dynamic and thermal stability current parameters is high, time to complete the operation;

3, with static contact insulation cover, so RMU in the structure to achieve the isolation, eliminating the white insulation partitions, fracture insulation boards that prevents short circuit inside the arc accident;

4. The valve has a unique structure, load switch after opening the shutter automatically fracture isolation, good protection performance;

5, load switch and grounding switch, a reliable mechanical locking device between the fuse, to meet the "Five Anti" requirements;

6, with manual operation and AC and DC operating power of two forms of electric operation, easy to implement power system: "Three steps" requirement.