Answer / chinni

Tan delta test is test for measuring the insulating
capacity of transformer oil.The value of Tan delta deals
with the leakege current through Insulating oil.

Answer / vels

to determaine the insulation condition if the tan delta
value is higher than 0.7 for a transformer,then oil has to
be tested in all aspects .from the oil results we can under
stand where the insultion is weaks

Answer / sunil guru

tan DELTA test is used to determine the insulation strength of oil
to determine the break down strength,flash point,its fire point,and also to identify the moisture content of the oil

their is certain fix value for all above said......
if the oil colour changes then it may be said that it may not be suitable for large time......

Answer / tapan desai

Know about insulation
degradation of transformer
and power cable.

Answer / pati

Ionic traces can effect the Tan delta of insulating oil
like transformer oil.The amount of charge particle directly
proportional to the electrical properties, hence tan-delta
test essencial for Transformer oil.

How to Select transformer for 100HP motor plz... With calculation

2 Answers   Rasandik,

how much load should be given on 5 mva transformer

7 Answers   NTPC, OHPC, Power Grid,

if 3400kw slipring motor rotor shorting done and motor started on mv drive ,what will be the rotor shoring current

0 Answers  

what maximum range of star & delta in hp or kw ?

0 Answers   Makkah Hilton Towers,

how to read idmt curva

0 Answers  

where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

0 Answers  

Why the airgap of an induction motor is less compared to that of a synchronous machine?

4 Answers   MGVCL, RRB, WebTech,

How neutral voltage for transformer decided? eg 33kv neutral voltage for 200MVA transformer?

1 Answers   MEIL,

Application of statically induced emf

0 Answers  

what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?

2 Answers  

what is the formula for converting KW into KWH ?

3 Answers   Blue Star, Essar,

Do I need a special Transformer to put 240 VAC 3 phase into it and and get 480 VAC 3 phase out of it to run a machine? Or, do I just use an ordinary step down transformer and step up the voltage? Thanks

2 Answers