Three set (each phase contain 2 cable of 400 mmsq CU XLPE
AWA) of single core cables are connected to 11 KV motor of
14 MW & the switch gear supplay is taken from 11kv feeder &
this supplay taken from 275 KV substation. Problem is one
pair cable(L3- 2 cable ) getting very hot & gland melted
and damaged in switch gear side. the other two cable
haven't any more hot(ambient temp only & L3 haveing 95- 100
Degree C. The same problem happened in 275 KV substation
switch gear side also where the supply taken for 11 kv
switch gear. But here L2 phese cable had problem. Why it is
happening like this?. The cable having temperature
different at different location from gland side inthe case
of 11KV feeder of 275 kv substation. why ?
- 2 Answers
- 3541 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / k.prakashchandra
This happens whenever there is a loose connection or under -
sized lugs are used.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / kaviraj
Get a thermal imager or camera, you will see the loose
connection very easily. I also bet it's a loose connection.
Else one of the cable cores has been broken. Check for sharp
bendings on cable. Copper braids still connected/earthed
properly?
| Is This Answer Correct ? | 0 Yes | 0 No |
What is the basic principal of Diesel genarator?
3 Answers Juniper Networks, MRF,
can we use NPT glands in LT panel
Can i replace Earth leakage relay to the faulty Earth Faulty Relay
derive DC RMS value for half wave rectifier?
what is broken conductor indication
The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.
What is the estimated total hydropower potential of india?
how to find motor contactor rating and bimetalic relay rating? of 30kw motor which will operate on star-delta starter?
4.In which type of welding is a pool of molten metal used.....
3 Answers ISRO, SSC, Vizag Steel,
what is the difference between 2phase & 3 phase?
can we use inductor for passing or blocking of AC or DC?
WHERE IS THE LIGHTING ARRESTER SHOULD BE PLACED IN DISTRIBUTION LINES?
-
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)
