Thytronic

Automatic reclosing (79) (5)

Average overvoltage (59Uavg) (1)

Biased differential for transformer (87T) (1)

Breaker failure (BF) (22)

Calculated residual overcurrent (50N(Calc)/51N(Calc)) (1)

Differential protection for generators and motors (87G/87M) (1)

Directional active overpower (32P) (2)

Directional active underpower (37P) (4)

Directional reactive overpower (32Q) (1)

Directional reactive underpower (37Q) (1)

Discharge Timer (TD) (2)

Frequency rate of change (81R) (2)

Ground directional overcurrent (67N) (6)

High impedance restricted earth fault (87NHIZ) (16)

Inadvertent energizing (50+27) (1)

Locked rotor (51LR(48)/14) (2)

Loss of field (40) (3)

Low impedance restricted ground fault (64REF) (3)

Maximum number of starting (66) (2)

Measured residual overcurrent (50N(1)/51N(1)) (1)

Measured residual overcurrent (50N(2)/51N(2)) (1)

Minimum power factor (55) (3)

Negative seq. overvoltage (59V2) (3)

Negative sequence overcurrent (46) (9)

Neutral unbalance overcurrent with inherent unbalance compensation (46N) (2)

Overflux (V/Hz) (24) (2)

Overvoltage (59) (11)

Peak overvoltage (59H) (1)

Phase directional overcurrent (67) (4)

Phase interruption under low-load condition (I2/I1) (3)

Phase overcurrent (50/51) (18)

Phase reversal (47) (1)

Phase undercurrent (37) (6)

Positive seq. undervoltage (27V1) (3)

Pt100 thermometric probes (26) (19)

Residual overcurrent (50N/51N) (17)

Residual overvoltage (59N) (11)

Reverse active overpower (32R) (3)

RMS phase overcurrent (50/51(RMS)) (2)

Rotor earth fault (64F) (1)

Thermal image (49) (13)

Third harmonic overvoltage (59-3H) (1)

Third harmonic undervoltage (27H) (1)

Underfrequency & overfrequency (81U 81O) (5)

Underimpedance (21) (1)

Undervoltage (27) (11)

Unipolar overvoltage (59.1) (1)

Unipolar overvoltage (59.2) (1)

Unipolar overvoltage (59.3) (1)

Unipolar undervoltage (27.1) (1)

Unipolar undervoltage (27.2) (1)

Unipolar undervoltage (27.3) (1)

Unipolar undervoltage (27.4) (1)

Voltage-controlled overcurrent (51V) (3)

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