why rating in KVA and KVAR?
Answers were Sorted based on User's Feedback
Answer / sunil ulange
ALL TRANSFORMERS RATING ARE IN KVA BECAUSE TRANSFORMER IS
INDEPENDENT OF POWER FACTOR AND TRANSFORMER WILL NOT ACT AS
A LOAD, IT ONLY TRANSFERS VOLTAGE FROM ONE LEVEL TO OTHER LEVEL.
KVA = KILO( VOLTS * AMPERES )
NORMALLY REACTORS RATINGS ARE IN KVAR
Is This Answer Correct ? | 20 Yes | 3 No |
Transformer reating is always in KVA because the losses of
T/F are depending upon voltage & current ,not on the phase
angle so that T/F rating is in KVA not in KVAR
( This topic u can study in the book Electical Enng Part 2
by B L Tereja.)
Is This Answer Correct ? | 8 Yes | 2 No |
Answer / nag
TRANSFORMERS ARE RATINGS ARE IN KVA.WHY BECAUSE CORE LOSSES
DEPENDING ON VOLTAGE AND COPPER LOSSES ARE DEPENDED ON
CURRENT.SO,TRANSFORMER DEPENDING ON VOLTAGE AND
CURRENT .THATS WHY TRANSFORMER RATING IN KVA.
REACTIVE POWER IS RATING IN KVAR .
Is This Answer Correct ? | 6 Yes | 0 No |
Answer / rijwan
someone has written that transformer losses depend on voltage as well as current that's why the rating is in KVA.
In case of motor also cu loss and iron loss depend on current and voltage respectively. Then the rating of motor why not in KVA ??
In case of x-mer we simply dont know the power factor as it operates at different power factor with time.
That's why the rating of x-mer is in KVA, not in KW.
Is This Answer Correct ? | 0 Yes | 0 No |
what happens if we give 1-ph supply for 3-ph Bridge rectifier...??
if AVR fails in D.G set, what will be the effect?
what is the relevance of knee point voltage in protection and metering grade CT ? and basically what is knee point voltage ?
What is the difference between Neutral and Eatrh?
what is the use of earthing?
What is meant by reactance voltage?
through which medium return supply given to alternator please answer in details
I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?
hi how are you? i m in walchand college of engg. do you have interest in join me through email so send your email id
how much current capacity of 300 sq. mm cable (4 core aluminium) and 150 sq. mm cable ( 4 core aluminium)
why reactor is connected before capacitor in APFC panel
What is the difference between Neutral and Earth