JBD
Electrical
- Nov 30, 2001
- 56
I am working on the specifications for a 4160V to 480 transformer to feed a 600HP 18 pulse AC variable frequency drive.
The drive manufacturer recommends the use of a 480Y/277 transformer with an HRG. But then the manufacturer also says it is not their problem if any common mode noise is caused by the use of a non-solidly grounded system and they will not help to alleviate.
My preference was to go with an HRG, a regular 6 pulse drive, and an automatic harmonic filter.
Does any one have any experience with how an HRG interacts with harmonics and "noise" from an AC drive?
The drive manufacturer recommends the use of a 480Y/277 transformer with an HRG. But then the manufacturer also says it is not their problem if any common mode noise is caused by the use of a non-solidly grounded system and they will not help to alleviate.
My preference was to go with an HRG, a regular 6 pulse drive, and an automatic harmonic filter.
Does any one have any experience with how an HRG interacts with harmonics and "noise" from an AC drive?