VFS (Variable Frequency Starter)

VFS (Variable Frequency Starter) can realize the step frequency conversion and stepless voltage regulation through the control to the thyrister. It can output 12.5 Hz, 25Hz and 50Hz frequencies, and through controlling the voltage/ frequency ratio to realize small starting current and big starting torque characteristics.

Product Details Company Profile

Description

Please contact us for more information: power@mec.com.cn

VFS (Variable Frequency Starter) can realize the step frequency conversion and stepless voltage regulation through the control to the thyrister. It can output 12.5 Hz, 25Hz and 50Hz frequencies, and through controlling the voltage/ frequency ratio to realize small starting current and big starting torque characteristics. At the same time, it can realize voltage slope starting, constant current starting, soft stop, brake stop and other start/stop controlling method. This technology is newly developed, and become one of the best motor starting technologies in the world.

VFS could be used in driving blower, pump, compressor and soft stop& start of HV three-phase AC asynchronous motor or synchronous motor. Also it could be used on some fixed frequency conversion condition, which could save the energy.

Item	Performance index
Range of power to be applied for	160kW-50000kW
Rated voltage	2.3-13.8kV
Voltage drop of thyrister	Less than 1V with bypass
Triggering technology	electromagnetic triggering or Photo-electric triggering
Starting torque	80%-90% rated torque
Starting current	Controllable and can be less than 2 times
Protection & monitoring	With over current protection, starting overtime protection, valves triggering failure protection etc.
Stop mode	Free stop mode, soft stop mode and electric braking mode
Directions	Forward & Reverse
Communication	Modbus, Profibus RS485, CAN