why the rating of transformer in only KVA not in others?
Answers were Sorted based on User's Feedback
Answer / naren
transformer having two kind losses .core losses and copper
losses . former depend on voltage while latter on current
so that why transformer rating is in KVA .
Is This Answer Correct ? | 14 Yes | 6 No |
Answer / ashwin
prakash i am fully satisfied with your nswer,as we have noidea of load on transformer.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / vikram chandorkar
as we know that every electrical machine is having losses..transformer is having two kind of losses i.e core loss which generally depends on voltage and other is copper losses (i.e I2R losses)which depends on current.hence transformer rating is given in kVA
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / b.anil kumar
transformer is designed to supply full load current,that
means it is independent of load power factor.so it is in KVA
Is This Answer Correct ? | 1 Yes | 2 No |
1.Power factor of the load in not defined in case of
transformer, so it is not possible to rate transformer in KW.
2. The losses (Copper loss and current loss) of the
transformer depends on current and voltage not on load.
3. Transformer is not a load and having no effect on PF and
its only transfer the constant power from one voltage level
to another voltage level without changing frequency.
Is This Answer Correct ? | 1 Yes | 2 No |
Answer / khalid
because of transformer winding losses
winding loses are a reactive power reactive power is add
in active power so the rating of T.F in KVA
KVA = Apparent power
KVA =KW+KVAR
Apparent power =Active power+reactive Power
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / elango
the manufacturer does not know what type of load will be
used by user(it may be resistive ,capacitive , or
inductive) so it is all dependent on power factor. so only
it is rated in VA or KVA
Is This Answer Correct ? | 5 Yes | 7 No |
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