Introduction
This product features a compact size, easy installation and maintenance, low noise, low losses, anti-theft, full protection, and strong overload capacity. It is suitable for new residential areas, green belts, parks, stations, hotels, construction sites, airports, and other locations. The YB27-12 combined American prefabricated substation is designed for use in 10kV ring main unit power supply, dual-power supply, or terminal power supply systems, serving as a substation, metering, compensation control, and protection device. This product meets the following standards: GB17467 High-Voltage and Low-Voltage Prefabricated Substations and DL/T537 Selection Guide for High-Voltage and Low-Voltage Prefabricated Box-Type Substations.

Model meaning


Use conditions
>Altitude not above 1000m；
>Ambient temperature: -35℃~+40℃；
>Relative humidity: daily average not above 95%, monthly average not above 90%;
>Installation place: place without fire, explosion hazard or chemical corrosive gas and with good ventilation, ground dip angle not above 3°.

Technical parameters


Outline dimension drawing


Order information
>Product operating place and special requirements;
>Provide product ordering drawing samples, ordering drawings including wiring drawings; specify the transformer capacity, models and specifications of main components, distribution branch loops and capacities;
>For configuration of electric energy metering and inactive automatic compensation devices, please provide configuration requirements for the metering watt-hour meter and transformer and specify the capacity of compensation capacitor;
>Specify requirements for product surface treatment;
>Please specify terminal type or ring main unit type during ordering of the combined transformer.