plz tell me about for how many rating (for 500kva)how much
current taken?
Answer Posted / nwachukwu kelechi
The general formula for a 3-phase power transformer is
given by:
power(KVA)=1.732*V*I*pf.
therefore,depending on the pf under consideration, assuming
a unit power factor,500kva power and input voltage of
11000V we have;
current(I1)= 500KVA/(1.732*11000*1)=26.24Amps.
If the output voltage is 400V, the current will then be:
current(I2)= 500KVA/(1.732*400*1)= 721.7Amps.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...
how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.
What are the types of windings present in the ceiling fan? What winding will be effective first when we started the fan?What are the resistance and inductance ratios comparatively at the initial speed and full speed of the fan?
How capacitor improves pf
I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.
What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?
Why the cores of large transformers build up of circular cross section?
Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?
Why can't we take NO LOAD TRIAL of motors having V1 mounting??
What is the meaning of loop in transformer
How to calculate no of EARTH PIT? Describe the formula as per IS standard?
What is the fault or needs to be done when frequency in ac drives is not changing?
Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???
Why different Pressure switch used in marine boiler water circulation system
If breaker is undefined position, first step to do.