about transformer oil material & Test name for the
measurement of its dielectric strength & wht will u do if
its dielectric strength goes low ?
- 2 Answers
- 5828 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / alex
Transformer Dielectric oil is tested in a Test Cell, I have
a few of them at home that I inherited from the origional
designer of the test. They look like a thermos flask and you
fill them with a bit of the oil from the transformer and
insert a center section that sits 2mm away from the surface
of the inside of the flask all around (2mm dielectric gap
all round). It is held there with glass / Mica supports. 2KV
is then passed between the inner and outer surfaces (via the
oil) to test its dielectric strength. A high voltage bridge
is normally used to get accurate resistance readings. If
dielectric strenth is low due to contamination it is replaced.
| Is This Answer Correct ? | 3 Yes | 2 No |
Post New Answer View All Answers
What is EMC filter in VVVF Drive ?
In Generator How suction compression power and exhaust works ?
What do you mean by a current transformer?
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
what is thresold of perception
11 kv input, 66 kv input advantages
What is the type of earth fault protection used in battery? explain.
What is super thermal power plant? and how it will differ from normal thermal power plant
What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?
How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts
how can we calculate the ratio of caustic soda and water in lrs.
battery capacity use of made?
A d.c. Shunt motor is found suitable to drive fans because they require?
will there be any problem by recovering slip from single phase induction motors?
HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?
