Hi folks
Got a contract this week to install a supply for a three phase compressor, nothing unusual or difficult. The comp set has input terminals marked U,V,W which to my mind required L1,L2,L3 respectively but when it was switched on the motor rotated in the wrong direction. Swapping L2 and L3 made it go the right way, so customer was happy, however this has me a bit perplexed. The site supply has clockwise phase rotation and I assume the compressor requires anticlockwise phase rotation, is this likely the case or am I being rather dense here?
Regards
Martin
Got a contract this week to install a supply for a three phase compressor, nothing unusual or difficult. The comp set has input terminals marked U,V,W which to my mind required L1,L2,L3 respectively but when it was switched on the motor rotated in the wrong direction. Swapping L2 and L3 made it go the right way, so customer was happy, however this has me a bit perplexed. The site supply has clockwise phase rotation and I assume the compressor requires anticlockwise phase rotation, is this likely the case or am I being rather dense here?
Regards
Martin