High Voltage Frequency Converter Series This frequency converter, petroleum and chemical and other harsh environments to soft start, soft stop and operation process control of the motor and energy-saving applications, especially suitable for coal mine or ground mine to enhance the winch, belt conveyor, scraper conveyor, coal feeder, fan, pump, pressure fan and emulsion pumps and variable frequency speed control of other equipment. Explosion-proof frequency converter designed specifically for hazardous area locations. These drives can be mounted next to the motor in the classified area, providing significant installation cost savings - along with the traditional VFD benefits of energy savings, speed and torque control, and system diagnostics. our low voltage frequency converter and emulsion pump frequency converter is also hot selling.