Armored Removable AC Metal Enclosed Switchgear

Technical parameters of KYN28-12 switchgear
Name		Unit	Data
Rated Voltage		kV	3,6,7.2,12
rated frequency		Hz	50
Rated current of circuit breaker		A	630,1250,1600,2000,2500,3150,4000
Rated current of switchgear		A	630,1250,1600,2000,2500,3150,4000
Rated short-time withstand current (4S)		kA	16,20,25,31.5,40,50
Rated peak withstand current (peak)		kA	40,50,63,80,100,125
Rated short-circuit breaking current		kA	16,20,25,31.5,40,50
Rated short-circuit closing current (peak)		kA	40,50,63,80,100,125
Rated insulation level 1-minute power frequency withstand voltage	Pole to pole, pole to ground	kV	24,32,42
	Between fracture surfaces	kV	24,32,48
Rated insulation level lightning impulse withstand voltage (peak)	Pole to pole, pole to ground	kV	40,60,75
	Between fracture surfaces	kV	46,70,85
Note: The short-circuit capacity of current transformers should be considered separately
Altitude 3000m~4000m, rated current ≤ 1250A, rated breaking current ≤ 31.5kA