Answer / joy banerjee (joysbag@gmail.co

The transformer rating in KVA can be calculated by:

KVA = 1.732xVxI

where

- V is the system Voltage in KV
- I is Current (Amps)

in transfomer which type of oil is use!

9 Answers   Essar,

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hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

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If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

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In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?

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when power transformer is flashed which gas is produce in side?

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define bilateral network and unilateral network? give an example.

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how power can be saved using VFDs in detail explain

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What are the protections required in the main lt panel which is connected to the transformer.

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What is corkscrew rule?

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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.

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what is a difference berween line voltage and phase voltage?

2 Answers  

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