compressor load switch - fuse

Isolate Switch
1.Type:FKN12A-12
2.Standard|:IEC420 GB3804
3.Main Material:Procelain&Steel

Main purpose
      FKN12A-12DCompressed air load switch, FKRN12A-12D series of compressed air load switch - fuse for 12kV and below three-phase power distribution system, as transformers, cables, overhead lines and other electrical equipment, control and protection purposes; especially suitable for urban and rural power network terminal substation and box-Model substation. And applies to ring, dual power supply unit of radiation control and protection.
      FKN12A-12DSeries pressuring gas division and the load current load switch and overload currents.
      FKRN12A-12D series of compressed air load switch - fuse to division and load current, overload current, short-circuit breaking current.

Use of environmental conditions
      Ambient air temperature    Limit +40°C  Lower -25°C
      Above sea level1000m.
      Relative humidity: daily average is less than 95%, on average less than 90%;
      Seismic intensity of not more than 8 degrees;
      No fire, explosion, chemical corrosion and severe vibration in the workplace;
      Contamination level:II.

Structural characteristics
     Load switch, grounding switch, fuse and institutions in a framework, it can be flexibly combined, compact structure, small size and ease of installing;
     Fracture for the direct-acting Model layout, dynamic and thermal parameters of high current, one-time to complete the operation;
     Static contact with insulation cover, so that the structure of ring counters implemented in isolation, eliminating the white insulated partition, fracture insulation flapper to prevent cabinet arc short circuit;
     The valve has a unique structure, the load switches gate, the door automatically isolate the fracture, protective and good;
     Load switches and earthing switches, fuses reliable mechanical lock between the devices meet the "Five Anti" requirements;
     With manual operation and the operation of AC and DC electric power operations in two forms, easy to implement power system of the "three remote" requirements.

Main technical parameters

Serial number	Project			Unit	Parameters FZN21	FZRN21
1	Rated voltage			KV	12	12
2	Rated frequency			Hz	50	50
3	Rated Current			A	630	125
4	Rated insulation level	1min power frequency withstand voltage	On the ground, and white	kV	42	42
			Isolated fracture		48	48
		Lightning impulse withstand voltage (peak)	On the ground, and white		75	75
			Isolated fracture		85	85
5	Rated short time withstand current /td>		Load Switches	kA	20	——
			Grounding switch		20
6	Rated short circuit duration		Load Switches	S	4	——
			Grounding switch		2
7	Rated short circuit making current (peak)			kA	50	——
8	Rated breaking current		Active load breaking current	A	630	——
			Closed-Loop breaking current		630	——
			5%Active load breaking current		31.5	——
			Cable charging current		10	——
			Breaking load transformer	KVA	1250
9	Rated short-circuit breaking current (current-limiting fuses)			kA	——	31.5
10	Rated transfer current			A	——	1200
11	Mechanical life			Times	2000	2000
12	Impact energy output			J	——	1+0.5

Serial number	Name	Unit	Data
1	Open fracture from	mm	≥175
2	Phase center distance		210±2
3	White air gap		≥125
4	Travel		210±4
5	S../uper Stroke		≥40
6	Different closing phase of	ms	≤10
7	Different points of three-phase gate		≤5
8	Shunt trip inherent Tripping time	ms	40~65
9	Main Loop resistance	μΩ	≤130