inverted phase polarity can be detected due to wrong connection of separation transformers between
controller and generator / mains / bus voltage. Phase sequence is OK but some phase(s) is connected
in opposite way (180° shift).
Following alarms can be detected:
GEN L1 neg = generator phase L1 is inverted
GEN L2 neg = generator phase L2 is inverted
GEN L3 neg = generator phase L3 is inverted
M L1 neg = mains phase L1 is inverted
M L2 neg = mains phase L2 is inverted
M L3 neg = mains phase L3 is inverted