NH3 2 stage plant
Have situation where swing compressor on VSD drive.
Normally would run as a booster, but can run as high side.
Motor for swing compressor was selected to run as high side, but was selected with smaller motor to match normal high side compressor capacity.

Booster motor 150kw Frick 316
High side motor 330kw Frick 222
swing machine 330kw Frick 316 (normally for high side 510kw).

To match high side compressor capacity the swing machine could possibly run at a lower speed.

In this situation motor amps extremely high & forced to reduce speed.

Any suggestions, all checks out electrically.

Thanks