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YB series is the outdoor Pre-fabricated substation (hereinafter referred to as Box Transformer Substation) with high voltage rated voltage 12kV, low voltage side rated voltage 0.4kV, transformer capacity of 1600kVA and below. The Box Transformer Substation is a complete intelligent power supply complete sets of equipment which is composed of high voltage unit, power transformer, low voltage unit, measuring unit and intelligent system optimization combination into, its function is much, widely used, safe and reliable operation, nice appearance, and is easy to install, covers an area of less, less maintenance, long service life, etc. Can be used as distribution equipment in Departments and sites of urban construction, residential area, municipal facilities, factories, mines, road, port, oil field and construction of temporary electricity. High voltage side can meet the requirements of the power sector for distribution automation, low voltage side can meet the requirements of intelligent residential property management, Can use the upper machine which is set up in the central station or the property management office to perform “four remote” (telemetry, remote, remote control, remote control) system management to Box Transformer Substation . The product meets the requirements of the GB/T17467( high voltage / low voltage pre installed substation ) and DL/T537(high voltage / low voltage prefabricated substation selection guidelines ).