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.

can anyone tel me what is competency of electrical supervisor??

2 Answers   ONGC,

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why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)

0 Answers  

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2 Answers  

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What is ELCB?

9 Answers   Bhel, CDS, IOCL,

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which relay is used on long transmission lines

10 Answers   ABB, Bhel, Student, Tata Steel Limited,

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formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

0 Answers  

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Explain how Hormonics will effect the Electrical System?

5 Answers  

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My requirement is 1VA,50/5A Current Transformer for Metering .If I select 15VA , 50/5A CT.Is there any possibility of Technical Problem ?

6 Answers  

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what is inter connected dc generator?

0 Answers   Lovely Professional University,

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Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

0 Answers  

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Differentiate between induced emf and self inductance?

0 Answers  

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In any plant or substation main incommer voltage RY - 415 V,YB - 400 V, BR - 387 V(in commer feed from transformer 11 Kv /0.415 KV) why found voltage differance in each phase? plant have not self power plant it is depend on outsource grid

2 Answers  

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