Variable Speed Drives (VSD / VFD)

While our speciality is in rotary Phase Change Converters, we do carry and sell a range of variable frequency drives which in some cases (with limitations) are the best solution to your single phase to 3 phase conversion application. We also use VFDs in some of our own products. Please feel free to discuss your application with us, and if a VFD is the correct choice, we'll tell you so!


Be Careful

There is a lot of misleading information on the net saying that the best and cheapest way to make 3 phase is with a variable-speed-drive unit (VSD). This can be very misleading. Firstly a 240V supply into a VSD will only produce a 240V version of 3 phase and not the true 415V that many machines require. Also many customer machines have control and logic circuits attached and these cannot be operated from electronic, variable speed drives. VSDs are designed to operate motors and they ramp up the output when the motor needs to start and clean 415V is not available at all times to operate control circuitry. The Phase Change Converter range will deliver a clean 415V output to any combination of machines that may be operated from a single converter unit.