Answer / mrinal

At first calculate the current of the load, after that
derate the current considering derating factor(depending
on site condition and laying of cable) after choose the
cable size from cable catalog considering derating current.
After that measure the length of cable required from supply
point of load to load poin. Calculate the voltage drop
which will max 3% (resistance and reactance of cable found
from cable catalog of selecting cable) if voltage drop>3%
then choose next higher size of cable.

Answer / santhosh k.m

actualy we take cables in current rating

1 Sq.mm = 0.8 or 0.9 A for power cables.

what is the meaning of improving the power factor (give technical ans not therotical)

2 Answers  

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I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

1 Answers   SPCL,

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how to combine two linear transformers...............

1 Answers  

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what is the use of vector group in transformer. means what r the application of various vector groups?

5 Answers  

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How do you protect your appliances from harm in case of neutral failure in a three phase power supply set up.

4 Answers  

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How to detect voltage vector shifting in interconnection protection.

0 Answers  

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synchronous motor of 13.5MW having which type protection? and how to set relay?give me relay setting calculation for different protection for this motor assume efficiency,power factor and other term if neccecery

1 Answers  

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What is LT? And specify the range of voltage?

10 Answers   HSL,

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why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?

1 Answers  

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how to deside the capacity of chock for drive?

0 Answers   Essar,

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can anyone help me regarding bout Electrical designs and calculations .. which text book should i follow as i am a trainee engineer.Description of my work which is Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations.Please help me

3 Answers  

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how we calculate capacitor bank mvar for 11 kv distribution networ , and i need releation between capacitor bank with voltage, frequency, current, pf

2 Answers  

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