vfd, CHH series high voltage frequency inverter

Technical Features 1.Adopt power units cascade structure and Modular design of electronic building blocks. 2.Multiple phase-shifting rectification technology, less harmonics and higher power factor. It can fulfill the most rigorous power quality requirements. 3.Adopt multiple inverter technology, very small output harmonics, minimizing torque pulse, improving running efficiency. 4.DSP+CPLD control platform, improving the Real-Time performance and reliability. 5.Built-in PID regulator and terminal programmable function. 6.Frequency given source: HMI, voltage source, current source, potentiometer, etc. 7.AVR function: Keep constant output voltage when the input voltage is fluctuating. 8.Protection function: short-circuit, over-current, over-load, over-voltage, etc. 9.Multiple bypass function: Bypass the power unit at fault automatically. Application 1.Power plant: induced draft fan, supply air fan, compressor, feed pump, mortar pump, etc. 2.Mining & metallurgy:induced draft fan, ventilation fan, mortar pump, Centrifugal feed pump, etc. 3.Petroleum Chemical Industry: induced draft fan, gas compressor, water injection pump, etc. 4.Cement Manufacturing: manifold fans, etc. 5.Water-supply and Wastewater Treatment: sewage pump, clean water pump, purification pump, air blower, etc. 6.Others: transmission gear, Wind turbines, wind tunnel, etc.