Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...


why in three phase 440 circuit in all phase current is
almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i
check with clamp meter it shows 25 A?

Answers were Sorted based on User's Feedback



why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but i..

Answer / kiran

Principle is vector summation.
Ir + Iy + Ib = 0

and not arithmatic summation.

Since neutral current is substantial 25A, the three RYB
vectors are not 120 degree apart. Means powewr factor in
each phase differs drastically. Thats why though there is
no much difference in RYB current, neutral has substantial
current.

Is This Answer Correct ?    15 Yes 1 No

why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but i..

Answer / amit

In balance condition neutral current is zero. Flux in all
three phases are in addative nature.
flux in R + flux in Y + flux in B = 0(zero)
but in your case it is different because of differnt
currnet in phases, which will affect and cause a unbalance
condition, will produce a flux in neutral and current
flowing through neutral. But in your case it is 25A which
is to much unbalance condition.
Take once again reading.

Is This Answer Correct ?    4 Yes 3 No

why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but i..

Answer / anil

1)your point of measuring to conder again

2)check whether nutral joint is given to another load which
you not considering for this load

Is This Answer Correct ?    0 Yes 0 No

why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but i..

Answer / rajesh siwach

valve of currents and voltages depend upon the manner in
which the 3 phase system connected,either in star
connection or in delta connection

Is This Answer Correct ?    1 Yes 4 No

Post New Answer



More Electrical Engineering Interview Questions

what is mean by induction & conduction principle ? how they differ from each other ? thank you

1 Answers  


How good are you in resolving the commercial issues to Employer's advantage?

0 Answers  


how the testing of protection CT Testing done through Primary injection kit please describe in detail procedure...

0 Answers  


Define norton equivalent circuit?

0 Answers  


Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

0 Answers  






11Kv Dog conductor 6/0.186 formula Line Losses ? Length 4.85Km amper ..? 52 Pole Max Load 3200Kw

1 Answers  


if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?

3 Answers  


how to calculate singlephase motor efficiency?

0 Answers   Alstom,


Explain the different regions in frequency response?

0 Answers  


Everybody Knows What is ACB, VCB but anybody tell me what is ST?

7 Answers  


Why battery rooms painted with dark colour

1 Answers   BAL, MSETCL Maharashtra State Electricity Transmission Co Ltd, Polycab,


What is the exact load current needed for a place which has 100nos of bulb of each 100w?

2 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (5074)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4445)
  • Electrical Engineering Interview Questions Electrical Engineering (16594)
  • Electronics Communications Interview Questions Electronics Communications (3915)
  • Chemical Engineering Interview Questions Chemical Engineering (1092)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2986)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (122)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1377)