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Project Name	Unit	HVElectricalApparatus	Transformer	IMElertrical Anpparatus
Rated voltage	kV	6;12	6/0.4;10/0.4	0.4
Rated capacity	kVA		1200~1250
			Ⅱ 50~400
Rated current	A	630,800,1250		200~2000
Rated breaking current	A	Load switch 630A		15~63
	kA	The combination of electrical appliances depends on the fuse
Rated short time withstand current	kA	20 kA	200~400kVA	15×1
		25 kA	>400kVA	30×1
Rated peak withstand current	kA	31.5;50	200~400kVA >400kVA	30 60
Rated making current	kA	31.5:50
Power frequency withstand voltage	kV	Phase to ground and phase to phase 42	Oil immersed 35	≤300V;2
		Isolated South Fracture 48	Dry 35	>300V;2.5
Lightning impulse withstand voltage (peak)	kV	Phase to ground and phase to phase 75	75
		Isolation fracture 85
Cabinet protection level		IP3X	IP2X	IP30
Level of noise	dB		Oil immersed<55
			Dry<65

Notes: When transformer capacity is less than 200kVA, items 5, 6 is not required.