Mine Isolation Transformer

Applications：

It is mainly used in mines containing methane and coal dust or having explosion risk. The transformer is built into the explosion-proof shell, which converts grid voltage 660V, 1140V, 3300V to 127V, 220V, 380V. It is a power supply equipment for mechanization excavation equipment used in coal mine. 

Features：

●Vacuum Pressure impregnation (V.P.I) is used to enhance insulation property;

●Silicon steel of high permeability is exploited, Low no-load losses, Small no-load current, less noise;

●Strong overload capacity, high compressive strength;

●Superior protection against humidity, can operate in high humidity environment;

●Low temperature rise; can operate at high ambient temperature.

Technical Specifications：

●Standards: GB, IEC

●Type: SG

●Capacity: 30～1000KVA

●Rated Primary Voltage: 660V,1140V,3300V

●Rated Secondary Voltage: 127V,220V,380V

●Frequency: 50Hz

●Number Of Phase: Three phase

●Insulation class: Above class F

●Rated Temperature Rise: ≥100K

●Impedance: 4%