Quick Details
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.
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Item
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Performance index
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Range of power to be applied for
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160kW-50000kW
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Rated voltage
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2.3-13.8kV
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Voltage drop of thyrister
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Less than 1V with bypass
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Triggering technology
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electromagnetic triggering or Photo-electric triggering
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Starting torque
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80%-90% rated torque
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Starting current
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Controllable and can be less than 2 times
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Protection & monitoring
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With over current protection, starting overtime protection, valves triggering failure protection etc.
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Stop mode
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Free stop mode, soft stop mode and electric braking mode
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Directions
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Forward & Reverse
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Communication
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Modbus, Profibus RS485, CAN
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Liaoning MEC Group Co., Ltd. is an integrated group company located in the coastal city of Dalian, China. The government owned company was established in 1978 and became a share holding company in 1994. Our group company engages in the business of industrial manufacturing, international trade, logistics, real estate and we also invest in various fields as shareholders of many corporations.
We have over 1,500 employees worldwide. Our average annual turnovers are more than RMB 2,200 millions and the annual volume of import and export amounts to more than USD 250 millions.
As one of the first class power equipment suppliers in China, our product line covers transformer, switchgear, mobile substation, circuit breaker, lightning arrester and other substation & transmission line equipment. Our products have been supplied to many companies all over the world which enjoy high reputations from our customers with high quality and excellent service.
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