BPJ-400(250,110)/1140(660) mine flame-proof and intrinsically safe AC frequency converter is used in underground mines with explosive gas (methane) and coal dust. Main spare parts such as IGB T, filter capacitor, control core adopt imported brands to ensure reliable longtime operation. This series adopt vector control technique with perfect motor protection and good speed adjusting to realize soft start and soft stop of the motor . According to the load circumstances, it can automatically adjust the motor speed and reduce the reactive impact of the motor starting on the grid. Meanwhile, through peripheral sensor , it can realize variable dynamic control to achieve the purpose of energy saving. Applicable to explosion-proof mine hoists, belt conveyor , scraper conveyor , pump station, fan etc. in the underground mines
3.1Adopt no-speed sensor vector . The output torque can reach 1.5 times rated torque at 0.5Hz. The largest torque is 2 times of the rated torque.
3.2Heat pipe cooling ensures the cooling requirement of the equipment operation, reduces the system voice and realizes zero maintenance.
3.3Wide frequency adjusting (2-16kHz) to meet demands of different occasions.
3.4Different brake modes according to different loads: DC brake, dynamic brake, feedback brake
3.5Human-Machine interface adopts intrinsically safe circuits for isolation purpose so that it can ensure the equipment safety and convenient operation.
3.6With protective functions of over-voltage, short -circuit, over-load, over-heating, phaseloss etc.
3.7With standard RS-485 communication interface.
3.8Good electromagnetic compatibility.
3.9Remote diagnosis ability