what is the purpose of supervision relay coil

1 Answers  

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what is used root two in single phase line?

1 Answers   DVC,

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How the oil level of the Buchholz Relay come down.

3 Answers  

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In our generating power station we get electric shock in the battery bank, what will be the reason?

3 Answers  

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what is the difference between the following 2 situations ? 1)Line & Neutral=240V Line & Earth=230V Neutral & Earth=10V 2)Line & Neutral=230V Line & Earth=240V Neutral & Earth=10V

2 Answers   Reliance,

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We are installing a 1.6 MVA transformer at our crusher plant and the feeder of HPSEBL is 2 km away at substaion . and a VCB is installed in the substaion which is 2 km away from transformer so we need another VCB near the transformer.

2 Answers   SCPL,

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what is the difference between indoor package substation and outdoor

3 Answers  

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How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

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why do we carry out winding resistance test?

0 Answers   MahaGenco, MAHINDRA,

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Why Transformer in KVA?

41 Answers   APCPDCL, Apollo Power, College School Exams Tests, Electrical Tech, Hitech, HP, L&T, MDL, Oil and Gas Jobs, TATA,

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What do you mean by a phase angel of instrument transformer?

0 Answers  

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what is meant by MCB and MCCB? and what its full form?

7 Answers   Bajaj, JHM Hotels,

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