YB-12 high-voltage/low-voltage pre-assembled substations are used in 10KV ring-net power supply, dual power supply or terminal power supply systems as complete sets of devices for power transformation, distribution metering, compensation, control and protection. In addition to the transformer, the high-voltage side of the substation is not equipped with four-position (or two-position) load switches, back-up protection fuses and plug-in fuses; the low-voltage side can be equipped with control appliances, distribution appliances, compensation devices and metering meters according to customer requirements. Transformer oil is used as insulation and interrupting medium.

This product is developed by absorbing advanced technology from abroad and combining it with the actual situation in China. Transformer is S9-M, S11-M type. The whole product has the characteristics of small volume, easy installation, low noise, low loss, full protection, simple maintenance and high performance to price ratio.