What is the formula for calculating Transformer Losses &
Efficiency. I want to compare the Transformer efficiency at
different loading condition.

Answer Posted / kashifhabib

Efficiency = (Output/Input)*100
&
Output (KW)= KVA * Power Factor
Input = Output + Iron losses + Copper losses
Iron losses are due to Primary voltage so remains constant
can be calculated by open circuit test
Copper losses are due to secondary current I*I*R
can be calculated by short circuit test
Exp: Full load copper losses 800 W
1/2 load copper losses will be 200 watts

Is This Answer Correct ?    368 Yes 101 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the de rating factor of cable? What is the importance of the de rating factor in cable select

1982


which type of motor is used in automatic swing gate

1661


what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.

1972


10 tube light connect in mcb breaker.one tube light is fault.so breaker is tribe.how fault is rectified.(using 3wire phase,earth,neutral)

2260


What are the different types of controllers?

743






which network topology offers the greatest level of tolerance?

1691


EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

1528


Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2

1482


what is spadar bar .why I use in DC generator.

1553


How do we find the rating of a transformer, if it got burnt badly.

1160


advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

1476


how to test reverse power trip?

4005


what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

1572


why does rotor rotets?

2184


what is 30-phase of transformer

1865