Load switch Cable access switch of indoor HV cabinet

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.

General:

Service Environment

Ambient air temperature: upper limit +40℃; Lower limit -25 (allowing storage and transportation at -30 ° C). The average value within 24h is not higher than +35℃
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
Key Feature
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

Technical Data

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