High voltage/low voltage prefabricated substation

Name	Unit	High voltage electrical equipment	transformer	Low voltage electrical equipment
Rated Voltage	kV	10	10/10.4	0.4
Rated Current	A	630		100~2500
rated frequency	Hz	50	50	50
Rated capacity	kVA		100‑1250
Rated thermal stability current	kA	20/4S		30/1S
Rated dynamic stability current (peak value)	kA	50		63
Rated closing short‑circuit current (peak value)	kA	50		15~30
Rated breaking short‑circuit current	kA	31.5 (Fuse)
Rated breaking load current	A	630
1‑minute power frequency withstand voltage	kV	To the ground, alternating 42 48 between fracture surfaces	35/28(5min)	20/2.5
Lightning impulse withstand voltage	kV	To the ground, 75 between phases, 85 between fractures	75
Shell protection level	dB	IP23	IP23	IP23
noise level	个		Oil change ≤ 55 Dry change ≤ 65
Number of circuits	kvar	1~6	2	4~30
Maximum reactive power compensation on the low voltage side				300