BPJV series mining flameproof and intrinsic safety high-voltage frequency converter (hereinafter referred to as "frequency converter") is suitable for the frequency conversion and speed regulation of belt conveyor, scraper, fan, water pump and other equipment motors in the harsh environment where there is danger of gas and coal dust explosion underground. The power supply shall be 50Hz, rated voltage 3300v or. 2 x 1905V.

The frequency converter adopts advanced AC-DC-AC frequency conversion control technology, with a variety of control modes for selection, wide range of speed regulation, flexible and convenient speed regulation, strong anti-interference ability, long service life, which is the best choice of underground frequency conversion and speed regulation device.

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

The frequency converter adopts imported ABB IGBT, the output voltage and current waveforms are almost sinusoidal, and the higher 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

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

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

Low frequency super torque function, maximum output 2.5 times of rated torque, to solve the problem of heavy load starting of scraper.

Protection function: over voltage, over current, short circuit, phase loss, under voltage, leakage blocking, insulation online monitoring, chain break protection, output imbalance, temperature protection.

It can realize two kinds of rectifying modes, i.e. 6 pulse or 12 pulse. (6 pulse does not need to use special phase-shifting transformer and special motor for frequency conversion, and directly input common 3300v power supply, which improves the versatility 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