Understanding Motor Power Rating and VFD Ratings: The Reality Behind Normal Duty and Heavy Duty Selections When it comes to selecting a VFD for a motor, many professionals start with the values provided for Normal Duty (ND) and Heavy Duty (HD). It seems straightforward — these ratings supposedly help match a drive to a motor […]
Let’s kick this off with a quick reminder. Variable Frequency Drives, or VFDs, are electronic devices that control the operation of an electric motor by adjusting the frequency and voltage that the motor receives. They work by receiving the AC current from the power supply, converting it to DC then converting it back thanks to […]
A business owner phoned the office a few weeks ago asking if SmartD carried a 5 HP 380V Variable Frequency Drive with 380V input and output and discussed the pitfalls of motor failure. SmartD has a 5 HP standard 6 pulse open PCB modules available, and 20-30HP, 480V Clean Power Variable Frequency Drive that just […]
