Power System, mainly includes following things:

  1. Power Generation
  2. Power Transmission & Distribution

Basic Components of a Power Transmission System are as follows:

  1. Substation
  2. Power Lines/Cables

Basic Components of a Substation are as follows:

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Auto reclosing EHV Transmission Lines :  A Guide on Circuit Breaker Recloser

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Only 5% of the faults are of the Permanent nature, rest are transient faults and so auto reclosing EHV Transmission Lines has become a generally accepted practice in Power System. What is Auto-reclosing in EHV Lines ? Ans: Auto-reclose is automatically reclosing a Circuit Breaker in a set time after it has been opened due…

Duty cycle of Circuit Breaker
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What is the Duty Cycle/Operating Sequence of Circuit Breaker specified on the Name Plate

ByPranali N

[We keep wondering what the heck this sequence on the name plate of the Circuit Breakaer. Lets find it out now. What is the Duty Cycle/ Operating Sequence of CB? It is the Mechanical Duty requirement to be fulfilled by the  Operating Mechanism of the Breaker and specified on the Name Plate of the Breaker…

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Polarization index (PI) test on Insulators

ByPranali N

All Electric Insulations are dielectric in Nature and have a Capacitive Property. During application of Voltage across the Electrical Insulation, initially there will be a charging current After few instants, the Insulation becomes totally charged and the Capacitive Chrging Current becomes zero. Hence, it is recommended tp measure insulation resistance after 1 Minute from instant…

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Buchholz Relay in Transformer

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Bucholz Relay provides Mechanical Protection for Transformer. What is a Buchholz Relay? What is the Working Principle of Buchholz Relay? 1.Accumulation Of Gases: Whenever a fault occurs inside the transformer, such as Arcing, Partial Discharge, Insulation failure of turns, breakdown of core or excess core heating, the fault is accompanied by production of excess heat….

tnc switch
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TNC Switch Working, Application and Connection Diagram

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TNC Switch is used in the RP/CP (Remote TNC Switch) and in the Breaker (Local TNC Switch) for Tripping and Closing the Breaker Manually. What is a TNC Switch? It is a Three Position Switch, used for Closing or tripping the Breaker Manually from Control Panel/Relay Panel in the Control Room.  The Three Positions are…