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Box Type Power Distribution Station

Item	Unlt	HIgh v oltage electncal appliances	Transformer	Low Voltage Apparatus
Rated voltage.	kV	6/10	6/0.4 10/0.4	0.4
Rated capacity	kVA		50~1600
Rated current	A	200,400, 630		100~3200
Rated short -circuit breaking current	A	Load switch 400-630		15~63kA
Rated short -circuit breaking current	kA	The combination switch depends on the fuse
Rated short -time withstand current	kA	16, 20(4s)		15(1s)
Rated short -time withstand current	kA	16, 20(4s)		30(1s)
Rated peak withstand current	kA	31.5, 50		30
Rated peak withstand current	kA	31.5, 50		63
Power frequency withstand voltage (lmin)	kV	Relatively and alternately 32/ 42	25/35 (Oil immersed)	􀎀 ≤0.3, 2
Power frequency withstand voltage (lmin)	kV	Isolation fracture 36/ 48	20/28 (Dry)	＜0.3, 2.5
Lightning impulse withstand voltage (peak value)	kV	Relative and alternating 60/ 75	60/ 75
Lightning impulse withstand voltage (peak value)	kV	Isolation fracture 70/ 85
Box protecti on level			IP32
Noise level	db		55
Execution standards		GB/T17467 •High voltage and low voltage prefabricated substations
Execution standards		Dl/T537 •rechnical Conditi ons for Ordering 6-35kV Box type Substati ons’

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