27 Undervoltage Protection, 32R Reverse Power Protection, 40 Underexcitation (Loss-Of-Field) Protection, 46 Unbalanced Load (Negative Sequence) Protection, 51V Inverse-Time Overcurrent Protection, 59 Overvoltage Protection, 50, 51, 67 Phase Overcurrent Protection, 59N, 67G Stator Earth Fault Protection, 81 Frequency Protection, 87G Differential Protection
