Our soft starters adopt patented technology to achieve significant reductions in starter current requirements.
RXHK has developed an innovative variable frequency starter (VFS) technology for soft start and soft stop applications. It achieves discrete frequency conversion and step-less voltage regulation through thyristor control. Start and stop control methods range from voltage inclination start to constant current start and soft stop to braking stop. Starters are precisely tailored to suit a machine’s load behaviour.
Our VFS technology can be applied to the soft start and soft stop of blowers, pumps, compressors and other high voltage three-phase AC induction motors or synchronous motors. It can also be used in applications requiring fixed frequency conversion speed regulation.
RXHK's Static Frequency Converter is based on a full control power device (4500V PP-IGBT), adopting power cells cascade technology to directly output high voltage levels. In each phase we link between 2 to 6 power cells to deliver an output between 6kV an 16.5kV or even higher voltage level. In this way there is then no need for any step-up transformer and the system structure can be simple.
Compared with LCI technology (based on thyristor devices), the RXHK VSI drive solution has the advantages of
RXHK’s MV motor soft starters can output 0-60Hz frequencies. They achieve a lower starting current with higher starting torque by controlling the voltage-frequency ratio of the motor.
|Motor voltage AC||6, 6.6, 10, 11, 13.8kV or others|
|Chemical, oil and gas||Fans,compressors and pumps|
|Power generation||Fans and pumps|
|Cement, mining and minerals||Grinding mills, conveyors, fans and pumps|
|Metals||Fans and pumps|
|Water||Fans and pumps|
|Sewage treatment||Fans and pumps|
|Pulp and paper||Fans and pumps|
|Other applications||Refrigeration compressors, extruders, HVAC systems, centrifuges, mixers, propellers and anchor winches|
+44 (0) 161 2330689