what is the principal of braker

4 Answers  

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WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

0 Answers  

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why do we connect droop ct{in gensets}in y_phase only

2 Answers  

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in india why we not use frequency above 50 hz for distrubuting power ?

1 Answers  

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what are the colour's and their indications in bucholz relay?

4 Answers  

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What is the formula to calculate the rating of a three phase miniature circuit breaker

0 Answers  

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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

0 Answers   TNEB Tamil Nadu Electricity Board,

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fog produced due to?

2 Answers   MAHINDRA,

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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can we use only a isolator in the subtation..

1 Answers   ABB,

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1. how much normal earth resistance in earth pits(neutral and body earth) and transformer neutral and body earth & panel earth.

12 Answers   HP, Malladi Drugs and Pharmaceuticals, Pearl Engineering, PL,

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EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

0 Answers  

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