xJAyx
Electrical
- Oct 29, 2003
- 100
Hello everyone,
I am working on a project which I have been parachuted into. The electrical system is a mess as it was never properly designed and what design there was was not followed very closely. There is no separation of power/signal conductors in the cable tray and no cinsistency in the sheilding of the conductors. The system is powered by 3 synchronized gensets, 400/230 VAC, 50 Hz. My concern at the moment is the VFDs installed in the system. I do not know if they have any reactance installed in them, but I do know that while the design did call for sheilded cable the installation is inconsistent on this. Most of the VFDs are powering fractional hp motors, but two of them are powering 30 hp pumps.
My concern is noise and harmonics generated on the line side and EMF generated in the cable tray runs. I know that the larger vfd's will need to be dealt with, but do I have to worry about the smaller ones (there are about 4 of them) creating a larger problem as a whole than they would individually?
Does anyone know and good web resources or have any tips for me on this one?
I am working on a project which I have been parachuted into. The electrical system is a mess as it was never properly designed and what design there was was not followed very closely. There is no separation of power/signal conductors in the cable tray and no cinsistency in the sheilding of the conductors. The system is powered by 3 synchronized gensets, 400/230 VAC, 50 Hz. My concern at the moment is the VFDs installed in the system. I do not know if they have any reactance installed in them, but I do know that while the design did call for sheilded cable the installation is inconsistent on this. Most of the VFDs are powering fractional hp motors, but two of them are powering 30 hp pumps.
My concern is noise and harmonics generated on the line side and EMF generated in the cable tray runs. I know that the larger vfd's will need to be dealt with, but do I have to worry about the smaller ones (there are about 4 of them) creating a larger problem as a whole than they would individually?
Does anyone know and good web resources or have any tips for me on this one?