How to Calculate Stc Rating of an indoor type VCB Panel? What is a full form of STC?

1 Answers   ABB,

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what is the use of earthing ?

8 Answers   Electrical Tech,

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What is Minimum permicible meggering value for following 1) LT Panels (Ph to Ph / Ph to Earth) 2) 11 KV, HT Panels (Ph to Ph / Ph to Earth) 3) 11 KV Cable 4) LT Cable

1 Answers   BFL,

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How to calculate the CFM to TR? What is the Formula

12 Answers   Carrier, Voltas,

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In parallel operation time both NGR’s close or not close if both close what will happen

0 Answers  

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what is the use of cable in our environment ?

0 Answers  

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plz explain the auot-reclosing circuit in electrical engineeing

0 Answers   BMC, KFC,

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What is Magnetic Current Test of Transformer.

2 Answers  

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what is non uniform load

1 Answers  

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Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

0 Answers   HCC,

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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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what is the meaning of the symbol << >> put in transformer drawing

0 Answers   TATA,

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