how to check a
transformer
insulation?

Answer Posted / sanjay kumar jain

we will check the Transformer PI value by Megger. It should
be <1.25 then transformer insulation isfair

Is This Answer Correct ?    1 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?

876


how we decide scurt (disc) of insulator with respect to kv rating

2919


there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1499


how to increase or decrease speed in DC shunt motor by DC convertor

1727


There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2

1430






What are the different types of LT Cables?

628


Why strting torqe high in inducation motor?

1648


how can i reduce sparking without stepdowning the voltage

2085


what is sevice settings for mccb?How can be it setted?

1618


What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2) 

2317


how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.

1633


3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

2239


Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this

1243


what is the difference between capacitive and resistive voltage divider?

2923


How to decide the size of the capacitor for a single phase induction motor say 2 HP ??

1649