China FKN(R)12A-12 Load Switch Manufacture and Factory

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FKN(R)12A-12 Load Switch

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FKN(R)12A-12 Load Switch

1. Overload protection
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln

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Product Details

FKN(R)12A-12 Indoor Vacuum Load Switch

KN12A- 12D pneumatic load switch and FKRN12A- 12D series air compressor load switch fuse are combination apparatus; Suitable for the control and protection of power equipment such as transformers and overheadlines in three-phase distribution systems with a rated voltage of 12kV and below; Especially suitable for terminal substations and box substations in urban and rural power grids, suitable for control and protection of ring networks and dual radiation power supply unitsThe FKN12A- 12D series pneumatic load switch can be used for breaking and making load current and overload current.
FKRNI2A- 12D series air compressor load switch fuse combination apparatus can break and close load current,overload current and short-circuit current of the line.
Standard: IEC 60265-1,IEC 265,IEC 420.

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Operating conditions

1. Ambient air temperature: upper limit + 40℃ , The lower limit is – 25℃ ;
2. The altitude is not more than 1000m;
3. Relative air temperature: the target average value s hall not be greater than 95%.and the monthly average value s hall not be greater than 90%,
4. The seismic intensity should not exceed 8 degrees;e.
5.No fire, explosion, chemical corrosion and severe vibration places;
6. Pollution level: II

Technical data

Name				Company	FKN12A-12D	FKRN12A-12D
Rated voltage				KV	12	12
Rated frequency				Hz	50	50
Rated current				A	630	125
Rated insulation:level	1min power frequency withstand voltage		To ground,alternatc	KV	42	42
			lsolation fracture		48	48
	Lightning impulse withstand voltage(peak value)		To ground,.alternate		75	75
			Isolation fracture		85	85
Rated short time withstand current			Load switch	KA	20	/
(thermally stable current)			Earthing switch		20	/
Rated shortcircuit duration(thermal stability time)			Load switch	A	4	/
			Earthing switch		2	/
Rated short circuit making current(peak value)				KA	50	/
Rated breaking current		Rated active load Breaking current		A	630	/
		Closed loop breaking current			630	/
		5% active load Breaking current			31.5	/
		Cable charging breaking current			10	/
		Switching off no-load transformer Compressor capacity		KVA	1250	/
Rated short circuit breaking current(current limiting fuse)				KA	/	31.5
Rated transfer current				A	/	1200
Impactor output energy				Swcond	2000	2000
Mechanical life				J	/	1±0.5

Name	Company	Data
Fracture opening distance	mm	≥175
Center distance between phases		210±2
Air gap between phases		≥125
Trip		210±4
Overtravel		41士3
Three phase closing in different periods	ms	≤10
Three phase opening in different periods		≤5
Inherent opening time of shunt release		40~ 65
Main circuit resistance	μΩ	≤130