what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?

4 Answers   NPTC, NTPC,

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What is GIS (Gas Insulated Switchgear)

3 Answers   Power Grid,

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What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

0 Answers  

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22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

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if harmonics is generates on the secondary side of transformer then why we put LC ckt on prim side?(i m talking abt rectiformer transformer)

0 Answers  

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what is the use of neutral displacement relay

1 Answers   OCL,

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what is is the potential diffrence between two phase ?

3 Answers   Bhel,

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Why in Hv transmission line as we see there are generally 6 or more than 4 conductor wires are used instead of 4 i.e. 3 for phase and 1 for neutral wire?????

2 Answers  

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why transformers are put with supply for 24 hours before giving supplying to a locality?

2 Answers  

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what is auto re-closer?

0 Answers  

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What is difference between YNyn0 and YNyn ??

0 Answers  

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What is the difference between single phase, 2phase, and 3 phase motors?

2 Answers  

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