Answer / amit

For transformer these are the fallowing test should be taken

1) Insulation resistance test
2) Vector group test
3) Transformer oil Break down voltage test
4) Magnetic current & Ratio test
5) Magnetic balance test
6) High Voltage test
7) Transformer winding rasistance test
8) PI Value test
9) SC test
10)OC test

Answer / giridhar

sc test & oc test done on t/f, no load,load test

Answer / zahid ali

On transformer
1- Insulation Resistance
2- Di-electric loss Factor or Tan delta or Power Factor test
3- Polarity & Vector Group Test
4- Transformer Turn Ratio Test
5- Sweep Frequency Response Analysis
6- Temperature Rise Test
7- AC leakage Test
8- Dissolve Gas Analysis Test On Oil
9- Short Circuit & Open Circuit Test To determine losses
On Generator
1- Insulation Resistance & Polarization Index
2- Hi Pot
3- Short Circuit Test
4- Power Factor Tip up test
5- Partial Discharges Test
6- El Cid Test (electromagnetic core imperfection detection)
7- Retaining Ring Test (Ultrasonic)
8- Recurrent Surge Oscillation Test on Rotor (RSO)
9- Low Resistance Test
10- AC Leakage Test

Answer / sachin rai

HI I am sachin rai working in mahindra automotive
sector,pune, here is the list of all tests carried out of
testing transformer. if u want know more about it pls mail
at rai.sachin21 @gmail.com
1. Voltage ratio test To measure voltage ratio between
windings of transformer
2. Polarity
3. Phase relation test
4. Resistance measurements
5. No-load loss test
6. Exciting current test
7.Load loss and impedance test
8.Induce potential test
9. Applied potential test
10. Oil test
11. Insulation resistance test
12. Leakage test
13. Temperature-rise test
14. Dielectric type test (Lightning and switching Impulse
test, BIL)
15. Dielectric special test BIL FW&CW
16. Determination of capacitance winding-to-earth, and
between windings
17. Measurement Zero-sequence impedance on three phase
transformer
18. Determination of sound level
19. Measurement of the dissipation factor (tan d) of the
insulation system capacitance
20. Determination of partial discharge on transformer

Answer / ketan y more

I AM KETAN MORE


1) MEGGER TEST
2) INSULATION TEST
3) POLARITY TEST
4) INSULATION RESISTANCE TEST
5) RATIO TEST
6) OPEN CIRCUIT TEST
7) SHORT CIRCUIT TEST
8) HV TEST
9) INDUCED TEST(TVTF_)
10) MAGNETIC BALANCE TEST
11) VECTOR GROUP TEST (DYN11)

Answer / vishwas shinde

no load test,open circuit test,voltage ratio testmeasure of
winding resistance test.

Answer / vipul parmar

1.Insulation Resistance Test
2.Winding Resistance Test
3.Magnetizing Current Test
4.Magnetic Balance Test
5.Voltage Ratio Test
6.Open Circuit Test
7.Short Circuit Test
8.High Voltage Test
9.Double Voltage Double Frequency Test
10.PI Test
11.SFRA Test

Answer / shilpesh naik

whether the short circuit test is to be caried out on every
transformer.......as it is a destructive test....which can
affect the windings of the transformer..........

Answer / nageshwaran.n

a. Insulation Resistance Test
b. No Load Test
c. Full Load Test
d. Oil Check
e. pf Test
f. Leakage Test
g. Open & Close Circuit Test
h. Sweep Frequency Test

Answer / ramarpandi

megger test

circuit diagram of trip circuit supervision relay

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