Interested to Buy Any Domain ? << Click Here >> for more details...
what is the minimum dielectric stregth of transformer oil.
- 25 Answers
- 72356 Views
- HP, I also Faced
- E-Mail Answers
Answer Posted / irfan ahmed farooqui
For a new insulating transformer oil(called virgin oil),
the,
value is 70kv for a good satisfactory level but, where as
oil in use (called in service) has values ranging from 25
kv to 50kv , depending upon various factors like ,running
hours of use, impurities, moisture content, sludge content
etc, but it is advisable to discard old oil, if value does
not improve after dehydration and filteration above 60 KV
in laboratory setup or the oil has not passing a
compatibility/mixibilty test with new transformer oil at
different ratio to come to at par in usable ranges as per
standards, on the other hand the exact values and correct
figures for Virgin oil are available in IEC-60296 AND for
oil in service there is a complete guide and specification
available as IEC-60247 where all the nesseccary
informations are available,including the test methods and
apparatus required.
| Is This Answer Correct ? | 8 Yes | 0 No |
Post New Answer View All Answers
Please explain, how to test vector group of tranformer(Delta y1) . Thank
Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?
What consists of 2 or more thermocouples to be connented series?
how to determine Sq.mm size of finolex power cables.
what happens when series resonance occurs?
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com
how can i use REF and diffrencial relay both in 1 CT core for transformer protection?
what is the function and use of cable differential protection relay?
What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
what happens to the water pump if ground water level is slowly decreasing?our water pump is varying from no-load full-load due to this problem
compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor
Define unilateral circuit?
