Answer / sreekantareddy

Due to circulating current

Answer / munir1206

If we do shielding of cable on both ends then shielding will
become the conductive path for earthing and much more
current will pass from the shielding may be more than the
capacity of the shielding could damage the shielding, and
may introduce additional electromagnetic interference in the
cable

A 25MVA 3300/400V T/F is termed as per winding is …… a) primary 3300V & Secondary 400V b) primary 3300V & low voltage winding 400V c) High voltage winding 3300V & Secondary 400V d) High voltage winding 3300V & low voltage winding 400V

4 Answers   Engineers India Limited,

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3 Answers  

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2 Answers  

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

5 Answers  

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1 Answers   Bhel,

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2 Answers   Sail,

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2 Answers   NSN, Sterling Wilson,

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how will protect transformer agint overcurrent protection

6 Answers   MPSEB,

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10 Answers   Crossdomain, Sepco,

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