Write down some major Faults of Alternator and Transformer.

Major faults in Alternator

• ü  Failure of prime-mover
• ü  Failure of field
• ü  Over Current
• ü  Over Voltage
• ü  Over Speed
• ü  Stator Winding faults
• ü  Unbalanced loading

Major faults in Transformer

ü  Open circuits

ü  Over heating

ü  Earth Fault

ü  Phase-to-Phase fault

ü  Over Load

ü  Phase to ground fault

ü  Incipient fault

ü  High voltage surge fault

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