Answer / k.prakashchandra

If it is single phase earth one of the terminals to treat it as neutral ( actually there is no neutral for single phase source). If 3 phase, earth the star point

Answer / ghannesh

hi all we know all zebraic sum of the current meeting of the junction point is zero star point is 0 it is connected to earth( we are called neutral) for balancing per phases

Answer / jithendra

For HT or LT DG Set Neutral from Copper Earth pit 2 sets According to the rated KVA of DG set Copper flat size varies

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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how to identify conection leads of an unknown electric motor

0 Answers  

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what is mean by power factor

9 Answers  

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what is the difference between earthed system and unearthed system.. where do we use unearthed system because in electrical catalogues always cable for earthed and unearthed system is given..pls elaborate

3 Answers  

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what is bus duct and what is differance between bus duct and bus bar

6 Answers  

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why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

0 Answers   Grasim,

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how to difference between the HT&LT cables

1 Answers   L&T,

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1600kva capacity Transformers how the bucholz relay,Oil temperature,winding,surge relay relays setting are to be done

0 Answers  

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what is meant by skin effect ?

3 Answers  

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Difference between drift current and diffusion current?

0 Answers  

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What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?

0 Answers  

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i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

0 Answers   SCM,

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