BPJ-400(250,110)/1140(660) mine flame-proof and intrinsically safe AC frequency converteris used in underground mines with explosive gas (methane) and coal dust. Main spare partssuch as IGBT, filter capacitor, control core adopt imported brands to ensure reliable longtimeoperation. This series adopt vector control technique with perfect motor protectionand good speed adjusting to realize soft start and soft stop of the motor. According to theload circumstances, it can automatically adjust the motor speed and reduce the reactiveimpact of the motor starting on the grid. Meanwhile, through peripheral sensor, it canrealize variable dynamic control to achieve the purpose of energy saving. Applicable toexplosion-proof mine hoists, belt conveyor, scraper conveyor, pump station, fan etc. in theunderground mines.
Adopt no-speed sensor vector. The output torque can reach 1.5 times rated torque at0.5Hz. The largest torque is 2 times of the rated torque.
Heat pipe cooling ensures the cooling requirement of the equipment operation,reduces the system voice and realizes zero maintenance.
Wide frequency adjusting (2-16kHz) to meet demands of different occasions.
Different brake modes according to different loads: DC brake, dynamic brake, feedbackbrake
Human-Machine interface adopts intrinsically safe circuits for isolation purpose so thatit can ensure the equipment safety and convenient operation.
With protective functions of over-voltage, short-circuit, over-load, over-heating, phaselossetc.