designvfds
Electrical
- Mar 19, 2023
- 1
I am deciding on components for a bayed modular enclosure containing multiple VFDs (480V/350A/321Hp each) for a dynamometer. I am concerned given the high voltages and currents that EMI/EMC is going to be an issue for components and instruments outside the enclosure.
How useful are EMC fans and outlet filters for reducing EMC/EMI?
I am taking other steps such as shielded cables to the motors to try to reduce the EMC/EMI. My understanding is that wherever there is a cutout in the sheet metal of the enclosure you compromise the shielding. How much improvement does adding EMC fans and outlet filters help to retain the shielding? They are quite a bit more expensive than the non-EMC option.
How useful are EMC fans and outlet filters for reducing EMC/EMI?
I am taking other steps such as shielded cables to the motors to try to reduce the EMC/EMI. My understanding is that wherever there is a cutout in the sheet metal of the enclosure you compromise the shielding. How much improvement does adding EMC fans and outlet filters help to retain the shielding? They are quite a bit more expensive than the non-EMC option.