Mv Drives

The RMVC 5100 provides speed and/or torque control for motor-driven applications in the medium and high power
range from 200kVA-40MVA motor voltages from 3.3kV to 13.8 kV.
It is available with air cooling in the lower power range and with optional water cooling in the medium to high power
range. RMVC 5100 drives are also available mounted within a customised container, with self-contained sealed cooling
systems, providing the highest IP class ratings for hostile environments as well as providing greater convenience and
ease of installation and commissioning.
The RMVC 5100 family of drives is thus particularly suitable to retrofit applications as well as applications requiring
long cables to the motor. The medium voltage output is achieved directly without the need for an output transformer,
particularly important in order to achieve high motor torque at very low speeds.
On the motor side, the drives provide almost perfectly sinusoidal motor current such that there are no concerns
regarding overheating in the motor or torque pulsations on the motor shaft. The output voltage waveform is multi-level
PWM such that it is close to sinusoidal and compatible with standard motor and cable insulation systems. It also does
not induce any significant stray currents in motor bearings which can otherwise cause early motor bearing failure. This
is all achieved without the need for sinusoidal output filters in all but the most exceptional circumstances (extreme
cable length).