Answer / sheik

to measuring in full load

Answer / bala

fully depends on the demand load in that power transformer
install area

Answer / suresh

by calculating the current carrying capacity and the voltage
withstand capacity of the insulation at the time of design
of any new transformer having any current or voltage rating

for previous 11 kv voltage rating the max current current
carrying capacity of wdg conductor at unity powerfactor
which represents KVA eauals voltage and current rating capacity

the eq is kva rating = va rating = V * I * cos @

at unity pf will be 1

Answer / thanigai1984

by measuring the capacity of transformer..

Answer / sanjay kumar behera

We know that the KVA rating of transformer always depends on the loss of that transformer.So for core loss calculation we can apply the open circuit test method as the core loss depends on voltage and for the calculation of copper loss we can apply the short circuit test method in which the copper loss depends on the current.

Answer / mekanjit boro

we use potential transformer

why heat produced at junction of two different conductor. what care should be taken to minimize it.

11 Answers   Birla, Maihar Cement,

Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

0 Answers   MPSEB,

1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.

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what is difference between low voltage and high voltage

3 Answers  

if only one generator is running in droop mode parrallel with grid and suddenly grid breaker off what will happen? It will trip o/u freq or stay as it is? (urgent)

10 Answers  

Which type of arc protection devices used.

2 Answers   KSEB, L&T, Siemens,

what is the thumb rule for determination resistance of resistor?

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I have cleared IOCL written exam(Electrical). My intv is on 6/9/2008.can anyone guide me & tellme abt intv questions.

5 Answers   IOCL,

Difference between earthing & grounding.?

3 Answers   ABB,

how to get bearing & winding temperature of an induction motor?

0 Answers  

How much current can a 3-1/2 core 100 mm wire carry?

3 Answers   Epitome, Focus, Focus Energy,

What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.

0 Answers