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

what is gapless metal oxide techniques?

1 Answers  


Is phase preventer require when overload relay is there

1 Answers  


what's mean by Transient stability analysis?

1 Answers  


Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.

1 Answers  


Can we use MCCB with Auxiliary Contact in place of Contactor in a AMF System.

1 Answers   C&S, Farnek,






where does core based current transformer is used? and what is the value of lux in a work station?

1 Answers   Space Matrix,


what is the formulae for selcting capacitor bank to increas pf

3 Answers  


why ct ,cvt should be stored in a vertical position?

0 Answers   Balco,


what will be d.g. capacity to cater together for 14hp A.C. load & 3kw lighting load

0 Answers  


Why 3 phase induction motor getting supply in body if one of it's phase is cut

0 Answers  


Write masons gain formula.

0 Answers  


how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

0 Answers   TK Group,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4452)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)