Prefabricated Substations

Prefabricated substations, also called European substations, are compact integrated power distribution devices composed of high-voltage electrical equipment, transformers and low-voltage electrical equipment that are all independently set with each other and connected using cables. Prefabricated substations are used for power distribution systems in high-rise buildings, airports, residential areas, medium to small factories, mines, oil fields and temporary construction sites for power acceptance and distribution.

Technical parameters

Item	Unit	High voltage	Transformer	Low voltage
Rated frequency	Hz		50
Rated capacity	KVA	10	30-2500	0.4
Rated voltage	KV	400630		50-2500
Rated current	KA	12.2 (2s or 4s） 16（2s or 4s） 20（2s or 4s）		15(1s) 30(1s) 50(1s) 65(1s)
Rated short-time withstand current	KA	42/48
Power frequency withstand current	KV	75/85
Lightning impulse withstand voltage	KV		75
Tapping link range	KV	Ip33	±2*2.5%	Ip33
Protection class	KA		Ip23
Sound level	dB		50

Features

‘目’ or ‘品’ shaped structure.
Shell materials: aluminum alloy plates, stainless steel plates, fiberglass reinforced cement boards.
Substation bases are made of a galvanized channel steel or cement, giving them a strong corrosion resistance and exceptional mechanical strength.
Two-layer top cover structure, featuring an excellent thermal insulation, radiation protection, and ventilation effects.
Substations are separated into several independent chambers, and all chambers are equipped with lighting devices. Automatic air exhausting devices are installed on top of the transformers to adjust the temperature inside the transformer chambers.
Flexible colors, matching with surroundings.


Working conditions

Altitude: ≤1000m
Wind speed: ≤34m/S (≤700pa)
Ambient temperature: -35ºC - +40ºC
Relative humidity: daily average humidity≤95%, monthly average humidity≤95%
Installation site slop: ≤3º
Installation site: Locations with no risk of fire or explosions, very little pollution, and no risk of chemical corrosion or vibration.
For situations that do not satisfy the above conditions, please don’t hesitate to contact us for a consultation.