Mining Explosion Proof Charger Transformer

Applications：

It is mainly used for flameproof chargers. The transformer is built into the explosion-proof shell, which charges electric locomotive under 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: 2.5T/9KVA; 5T/16KVA; 8T/25KVA; 12T/33KVA

●Rated Primary Voltage: 380V/660V  660V/1140V(△/Y switching voltage)

●Rated Secondary Voltage: Based on DC parameters of chargers

●Frequency: 50Hz

●Number Of Phase: Three phase

●Insulation Class: Above class F

●Dielectric Strength: 4200V/1min

●Rated Temperature Rise: ≥100K

●Impedance: 4%