Technical Notes

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WEDGE TIGHTNESS IN STATOR SLOTS

THE PERIODIC VERIFICATION OF WEDGE TIGHTNESS IN THE STATOR SLOTS IS AN ESSENCIAL ACTIVITY IN A GOOD MAINTENANCE PROGRAM OF ELECTRIC POWER GENERATORS. IN EACH SLOT OF MODERN GENERATORS STATORS, THERE ARE TWO COIL SIDES OF DIFFERENT COILS.

UPRATING OF GENERATORS

ELECTRIC GENERATORS ARE ENERGY TRANSFORMERS. RECEIVE MECHANICALENERGY FROM TURBINES OR MOTORS, EXPRESSED IN TERMS OF TORAVE AND SPEED AND TRANSFORM IT INTO ELECTRIC ENERGY,EXPREESED IN TERMS OF VOLTAGE AND CURRENT, TO DELIVER IT TO ELECTRIC LOADS, SUCHAS LAMPS,MOTORS AND HOME APPLIANCES, AMONG OTHERS.

RETAINING RINGS IN TWO POLE ROTORS

THE MAIN PARTS OF A TWO POLE GENERATOR ROTOR ARE; SHAFT, FIELD WINDING, WEDER, RETAINING RINGSAND FANS. IN OPERATION, THE ROTOR TURNS AT 3,600 RPM, AND THE ABOVE MENTIONED COMPONENTS ARE SUBJET TO HIGH MECHANICAL STRESS DUE TO CENTRIFUGAL FORCE.