GENERATOR PROTECTIONS

• PROTECTING AGAINST ABNORMAL OPERATING CONDITIONS

• THESE PROTECTIONS INITIATE ALARM TO DRAW OPERATOR ATTENTION

• ALSO INITIATE AUTOMATIC TRIPPING IN CASE OPERATING PARAMETERS CONTINUE TO BE ABNORMAL

GENERATOR PROTECTIONS

• OVERCURRENT• OVERVOLTAGE• NEGATIVE SEQUENCE CURRENTS• UNBALANCE CURRENTS• OVER FLUXING• FIELD FAILURE• POLE SLIPPING• LOW FORWARD POWER• REVERSE POWER

GENERATOR PROTECTIONS(COVERING ELECTRICAL FAULTS)

• STATOR EARTH FAULT• STATOR PHASE TO PHASE FAULT• STATOR INTER TURN FAULT• GEN. & GT. OVERALL DIFFERENTIAL• GEN. TRANSFORMER REF.• ROTOR SINGLE EARTH FAULT• ROTOR DOUBLE EARTH FAULT• ROTOR INTER TURN FAULT

CLASSIFICATION OF PROTECTIONS

•CLASS A PROTECTIONS•CLASS B PROTECTIONS•CLASS C PROTECTIONS

GENERATOR DIFFERENTIAL PROTECTION

GEN / G.T. OVERALL DIFF PROTECTION

ROTOR EARTH FAULT PROTECTION