Interested to Buy Any Domain ? << Click Here >> for more details...
132 KV TRFO BUSHING BURNT WHEN A 6.6KV HAS BEEN APPLIED
TO IT .WHY .ANY REASON ?
- 2 Answers
- 9087 Views
- MRF, I also Faced
- E-Mail Answers
Answer Posted / dinesh lokhande
Let us first understand type of bushing.
Bushings for 132 kV class transformers are generally OIP
(Oil impregnated paper)bushings. However before charging
transformer air release to be done from tranformer tank and
bushings to release trapped air during oil filling. If in
any part of bushing air is trapped then air gets ionised
and provides a path for voltage beakdown resulting in
brsting of bushing due to high voltage stress in bushing.
Some other reason may be dielectric brakdown due to ageing.
Additional information.
Capacitance Tan delta test for OIP bushings can provide
readings of capacitance and tan delta which are indicative
of bushings deilectric health.
| Is This Answer Correct ? | 14 Yes | 2 No |
Post New Answer View All Answers
Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
Can double compression glands be used with regular cables?
in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?
sir i used 3 hp of motor for spraying pump, other home light and other home items which size of allminium pvc wire ix used
why the neutral line is not giving shock to us if we touch it ?
Why is the frequency not changed during transformation of electrical energy in a transformer?
from which subjects most of the technical que will b asked for hpcl(electrical).pls help me
how the characterstics of control valve being done
What is the function of capacitor in electrical circuits?
How can I known multiplying factor .without multiplying table
What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr
How to minimize the eddy current losses?
what is the difference between pvc & fiber glass cables
Explain and give me an example of a time when you had to explain some new procedures to your co-workers for quality service delivery, how did you go about it?
sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.
