Overview of the products

YBW-12 series outdoor prefabricated transformer substation is a compact set of apparatus that combines high-voltage electrical equipment, transformers, low-voltage electrical equipment etc. and suitable for urban high buildings, residential communities, small and medium-sized industrial and mining enterprises etc. some electricity consumption sites with strong environmental adaptability, used to receive and distribute electricity in the distribution system.
YBW series outdoor prefabricated transformer substations have the characteristics of various external decorations, high compatibility with the surrounding environment, strong completeness, small size, compact structure, safe and reliable operation, convenient maintenance, and mobility. Compared with conventional civil engineering substations, the box type substations with the same capacity usually only occupy 1/10 to 1/5 of the area of conventional substations, greatly reducing design workload and construction volume and the construction cost as well. In the distribution system, it can be used for ring network distribution systems, as well as dual power or radial end distribution systems. It is a new complete set of equipment currently used for the construction and selection of urban and rural substations.
YBW prefabricated transformer substation complies with the national standard GB 17467-2010 <>.

Model and meaning

Electric technical parameters

Name	Unit	High Voltage Electrical Equipment	Transformer	Low Voltage Electrical Equipment
Rated voltage	kV	10	10/0.4	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 stable current (peak)	kA	50		63
Rated on-off short-circuit current (peak)	kA	50		15~30
Rated breaking short-circuit current	kA	31.5（fuse）
Rated breaking load current	A	630
1min power frequency withstand voltage	kV	to ground, between phases 42, between fractures 48	35/28（5min）	3.0/2.5
Lightning impulse withstand voltage	kV	to ground, between phases 75, between fractures 85	75
Shell protection level		IP23	IP23	IP23
Noise level	dB		oil variation ≤ 55, dry variation ≤ 65
Number of circuits	Individual	1~6	2	4~30
Maximum reactive power compensation on the low-voltage side	kvar			300