Interested to Buy Any Domain ? << Click Here >> for more details...
How the Transformer oil testing is done & Why oil dielectric
goes LOW & what is solution for that ??
- 3 Answers
- 12996 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / saroj
TRF oil is tested in a glass pot where high voltage,KV is
applied between two electrodes and sparking at electrode to
be observed. For good oil , it comes about 40~60KV/mm .If
it comes lower then filteration is required. Those TRF
having tap changing is frequently required it is
recommended to do filteration in once in year.Also its
value goes low because of moisture ingress in oil .
| Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
Whether IP65 enclosure box blocks ventilation if driver for LED have to enclosed inside IP65 box
why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
sir pls send the je exam - 2008 and other model question papers..
What is a feedback in control system?
Define liftable weight of a transformer? Does the total weight of transformer include oil weight?
How to configure the drives in PLC, through Profibus commnication. And to how to address it?
what is the difference between megger and earth resister ??
What is the difference b/w fanuc alpha series 16i and 18i controller. what is stand for i
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?
What are factors to be considered while we selecting the Core Balance Current Transformer for Earth fault protection
what is the Transformer Impedence?How can calculate?
what will happen if frequency is below 50 hz?
how to select the double earth conductor if 21A full load?
