During short circuit, circuit breaker contacts opens and automatically closes after few cycles to determine whether the fault is cleared.…
Requirements of parallel operation of alternators: The alternators which are to be operated in parallel should meet the following requirements…
What is primary cell and secondary cell? Battery which can be discharged only once is called primary cell ex: Manganese…
Faults that can occur in 3 phase induction motors and associated protections are discussed below: Stator faults: These faults include…
During normal operation of the Synchronous Generator or Alternator excitation to the rotor is provided by the small DC generator…
Normally the rating of synchronous generators or alternators will be in KVA or MVA instead of kW rating. Electrical apparatus…
DC transmission has some advantages over AC transmission, but it cannot completely replace ac transmission system due to some limitations…
HV 6.6kV Induction motor Protection For HV motors rated 6.6kV and above motor over current, stalled rotor, and short circuit…
DC Motor Applications in Industries In spite of wide use of ac supply, dc machines have some advantages compared to ac motors…
Synchronous motors are not self starting machines. These machines are made self starting by providing a special winding in the…