Good afternoon , A colleague and I have been asked to install a compressor with a 3.3kV 1MW motor as its prime mover. We have been chasing the manufacturer for the typical Starting characteristic. We have been assured that the compressor can only start in an unloaded condition. That would...
We are looking at installing Active Filters to mitigate enhanced harmonic propagation due to the addition of non linear loads to our network. We are experiencing about 2.8% Voltage THD at the 11kV point of common coupling which can peak at around 7% when differnet switching configurations are...
We have just fitted four lowara pumps that came with WEG motors (37kW 400V 2 pole) . These motors are controlled by ABB acs 800 active front end drives. Within a week we had lost Three of the four Motors, motors taking very large currents and tripping on overcurrent before they got anywhere near...
