1.what type of oil used in tranformer.
2.oil vesocity.
3.oil gauge.
4.witch time oil filterring & how much temperature
maintaned.
- 9 Answers
- 11915 Views
- NTPC, Reliance, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / pawar shyamkant sitaram
1] Minaral oil is used in the Transformer after filtration.
2] Oil viscosity is imprtant parameter to be watched while
transformer is in service.Normal practical value is between
21 to 27 CST.
3]Oil gauge is used to indicate the oil level in the
transformer.MoG is common gauge used in transformers main
tank coservator.
4]Generally temp. maintained at the time of oil filteration
is 65 to 75 deg.C.However it is to be decided by the
utility at what temp.fiteration is to be carried out.Oil
condition,Oil BDV & water containt in ppm are the main
factors for maintaining temperature while filtration.
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / laxmaiah
TRANSFORMER OIL IS USED AND OIL IS FILTERED TILL IT'S BDV
IS MORE THAN 65 KV AND AT MAX 65`C
| Is This Answer Correct ? | 6 Yes | 2 No |
1. Mineral oil-commonly called as Tr oil
2. 27CST (max)
3. ?
4.a) BDV is below 30KV for voltage below 72.5 Kv,40Kv for
voltage 72.5-170 Kv and 50Kv for above 170 Kv b)water
content above 20 ppm for above 170 Kv and40 ppm for below
170 Kv c) PI value less than 1.2 Temperature to be
maintained while filtering is 65- 70 C at almost full vacuum
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / birendra
4. If BDV comes less then 15 KVolt. Then we need oil
filtering. Max Temp.. 65 deg C.
| Is This Answer Correct ? | 2 Yes | 3 No |
High purified insulating
oil like silica gel is used
in Xmer
| Is This Answer Correct ? | 3 Yes | 10 No |
what do you understand by dressing a HT/LT pole
1 Answers Federal Polytechnic Nekede,
If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?
why capacitor using the induction motor?
why earth fault current is always less than the o/c
what is surge impedence loading
What is electrical diversity factor in electrical installations?
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
In a 11Kv/433Volt Delt-star step down transformer one one line(Line-B) of HT site is open & earthed on DP structur. What will be the voltage on LT side R-Y, Y-B,B-R and R-N, Y- N & B-N?. Please help to understand the problem with examples. Arvind , Jaipur.
draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.
which plant has high load factor
Which types of gate insttaled in static switch. Please give me answer.
seromechanism
-
Civil Engineering (5085) - Mechanical Engineering (4451)
- Electrical Engineering (16632)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
