BPJV series mine explosion-proof and intrinsically safe high-pressure combined frequency converter is suitable for adverse environment with gas and dust explosion danger in underground coal mine. The power supply requirement of the line used is 50Hz AC and 3300V or 2×1905 rated voltage.

This frequency converter uses advanced AC-DC-AC frequency conversion control technology, has a variety of control modes for selection, wide speed range, flexible and convenient speed control, strong anti-interference ability, long service life, and is the best choice for underground frequency conversion speed regulator.

The master-slave control adopts the advanced synchronous control mode of torque and speed to realize the automatic power balance of multiple machines

The inverter adopts imported IGBT clamp topology with high reliability and efficiency. The output voltage and current waveforms are almost sinusoidal, and the high-order harmonic component is reduced by 40%

Converter output to load cable up to 2500m

The control signal is transmitted by optical fiber to enhance the anti-interference ability of signal and ensure the reliable operation of frequency converter

Inverter can drive either three-phase asynchronous motor or AC permanent magnet synchronous motor

One drive two operation mode, one drive three operation mode

Multi section speed control function, speed output can be set according to process requirements

PLC based inverter control and fault diagnosis system

The frequency converter adopts copper based water cooling technology and has the function of overtemperature active protection

With a variety of communication interfaces: can, RS485, RJ45, RS232 to meet the requirements of mine digital

Remote control and near control modes can be selected to realize remote control and local control of frequency converter

Various motor control modes: V / F, S / L vector control, CL vector control, AFE

10 inch Industrial LCD displays status data of frequency converter

Low frequency super torque function, maximum torque output 250%, solve the problem of scraper heavy load starting

Protection functions: overvoltage, overcurrent, short circuit, phase loss, undervoltage, leakage blocking, insulation resistance online monitoring, output imbalance, temperature protection, etc

It can realize two rectifying modes of 6 pulse or 12 pulse. (6 pulse does not need to use special phase-shifting transformer, but directly input ordinary 3300v power supply, which improves the universality of power transformer and reduces the cost of user equipment procurement.)

For scraper conveyor, the unique function of pretensioning bottom chain of tail motor in the process of starting is designed;

With WiFi data transmission function

Realize the automatic storage function of the inverter operation data