why designer use kva rating instead of kw in transformer
rating???????????????
Answer Posted / integratorman
Transformer losses are related to the efficiency of the
transformer. The Power factor of a transformer depends on
the load attached to it. if that load is resistive, power
factor is usually considered 1, in which case KVA = kW. if
the load is inductive or capacitive, then power factor
should be taken into consideration when sizing the
transformer.
Hence the transformer is designed for voltage and current
output(VA) - how you apply the transformer determines how
many watts there is in the circuit.
Is This Answer Correct ? | 23 Yes | 3 No |
Post New Answer View All Answers
What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..
I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA
draw singleline diagram of star to delta and dol starters
How to Prepare preventive maintenance shedule of machine tool.
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com
how to find three phase complex power in per unit and MVA?
what is the voltages using in movie theaters??? why ??why not other??
why co incidence factor considered in transformer sizing?
what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?
which type of amplifiers are used in multimete?
What is the difference between acs 550 & acs 850
Inductor and capacitor........power in one phase and ...... in it another phase.
what is model question rrb junior engineer electrical gr.II
please give me all the Alarm .Trip ,Safety Relays & Conditions of UPS Systems mail me on ashokbabunhce@gmail.com