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

we have a 2000kva step down transformer at our site. The HT
side is charged from 22000V. So the primary current will be
52.48A. So why the HT breaker(SF6 ABB) is rated of
1250Amps ?

Answers were Sorted based on User's Feedback

we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the pr..

Answer / chris

I don't know but I'd like to see the answer.  I'm pretty sure Javad isn't correct but might be.

Is This Answer Correct ?    0 Yes 0 No

we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the pr..

Answer / javad

i thing the cb is coming at standered rating.but if fault occures the current will go beyond 1250 defenitly.therefore no problems

Is This Answer Correct ?    2 Yes 3 No

Post New Answer

More Electrical Engineering Interview Questions

How to Decide the Location of Earth pit for Compressor in Oil Depo? and How to measure the resistance of earth pit Pls explain me with the help of Circuit Diagram?

0 Answers   Triune,

advantage of using 110v than 230v

1 Answers   NTPC,

What is the working principle of MIG welding? and its out put Voltage?

0 Answers   L&T,

Explain about c.t?

0 Answers  

Suppose the incoming power is 11 kw, but the load require only 8 kw means how can we save or use the excess power?

3 Answers  

what is relation of rpm with Power supply? rpm directly Proposational to power ?

2 Answers  

What is basic fundamental for choosing NGR or NGT for any generator neutral grounding

5 Answers   EDF,

How do you select a cable size(Cu & Al) for a particular load?

2 Answers  

Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

0 Answers  

what is meant by power and distribution transformer ?

0 Answers   CG,

please send me RRB electrical engineer previous year questions for Sr. Section Engineer

0 Answers  

What is the basic difference of turn ratio & transformation ratio for a transformer?

8 Answers   IGT,

  • Civil Engineering Interview Questions Civil Engineering (5074)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4444)
  • 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 (123)
  • 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)