why DG,Transformer,UPS capacity will be tell in KVA but not
in KW?
Answers were Sorted based on User's Feedback
Answer / sujith
The active power in KW is= VICos(angle B/w V&I).
The angle is dependent on the load connected and hence the
active power varies. So KVA only can be mentioned for the
above mentioned supply sources.
Is This Answer Correct ? | 12 Yes | 3 No |
Copper loss depending upon the voltage .core loss depeon
the current. both the lossse are meassure in voltage and
current thats why we are mensione in KVA .
Is This Answer Correct ? | 7 Yes | 3 No |
Answer / srikanth
In DG the power factor is always unity that means cos=1
so the value of power is P=VI
P=VI IS FORMULA FOR KVA
SO DG IS IN KVA BUT NOT IN KW
Is This Answer Correct ? | 3 Yes | 5 No |
Answer / puneet kapil
First of all get clerar with the term KVA and KW
KW is the real power or active power
that means the amount of power that is available to do real work.
And KVA is the apparent power,that means
only a part ogf apparent power is available to do real work
rest or remainder is simply the excess current.
Now the question arises why to mention KVA the apparent power,
if only we can use a part of it...
Answer..... the rating of electrical appliances is dependent om the amount of current they can sustain,but KW does not give the actual amount of current that electrical equipment
can carry which is given by KVA...
I hope its clear now :)
Is This Answer Correct ? | 0 Yes | 4 No |
A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?
How DC earth leakage currents can be reduced ?
what is electrical machines
what is VFD and where is use of it
how does PLCC work?...
What is milivolt dop test in Busducts? What is its significance & procedure to do the test?
what is mean by harmonics
What is the impedence of Transformer?
can we amplify dc signals.how can it be done
what is meant by 3rd hormonics ?
STATE USE OF ARC RUNNERS & SPLITTERS ?
How to increase the kvah ?