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Question
What are protection of transformer on HT side & on LT side?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
For HT tran. high winding & oil temp. alarm with triping
portection must be there. And Buchholz relay triping also
necessary. Addition to that Over current, earth fault realy
must be there.
 
Is This Answer Correct ?    5 Yes 2 No
Santosh Mulay
 
Answer
# 2
If the transformer is below 1000KVA, for the HT side
protection AB switch and HG Fuse must be used and for the LT
side protection ACB/OCB must be used.
If the transformer is above 1000KVA, for the HT side
protection VCB/ACB must be used and for the LT side
protection ACB/OCB must be used.
 
Is This Answer Correct ?    10 Yes 13 No
Krishna
 
 
 
Answer
# 3
on ht side Drop out fuse used for overhead line and lt sie
HRC fuse with fsp ( Fuse section Pillar)
 
Is This Answer Correct ?    1 Yes 6 No
Neeraj Dubey
 

 
 
 
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Why Neutral Busbar CT & transformer neutral CT connected with phase CT in Restricted Earth Fault?   3
 
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