BOOSTERS
A booster is a DC generator whose function is to inject or add certain voltage into a circuit so as…
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PROTECTIVE DEVICES AND THEIR FUNCTIONS
The devices in switching equipment are referred to by numbers, with appropriate suffix letters when necessary, according to the functions…
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TRANSFORMER EXTERNAL FAULTS
External faults are those faults or hazards that occur outside the transformer. These hazards present stresses on the transformer that…
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GENERATOR OVERHEATING PROTECTION
Overheating of a synchronous generator may occur due to one of the following causes: 1. Overload 2. Failure of the…
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GENERATOR OVERVOLTAGE PROTECTION
One type of overvoltage in a generator is that due to transient surges caused by lightning or switching surges. These…
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GENERATOR BACKUP PROTECTION
There are two types of backup protection that might be applied to a generator: backup of relays protecting the generator…
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GENERATOR ROTOR PROTECTION
There are several different types of rotor protection, each type guarding the rotor from a particular type of fault. From…
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OPERATION OF INDUCTION GENERATOR
Under normal operation of a synchronous generator, the field created by the rotor windings locks in with revolving mmf of…
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GENERATOR FIRE PROTECTION
Special fire protection equipment is sometimes used to quickly extinguish fires within the generator housing. One method that has been…
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GENERATOR COOLANT FAILURE PROTECTION
Some of the larger generators have stator windings that are cooled by water circulating through the windings. If the flow…