How to decide the input and output circuit breaker for a
1600kva transformer.Is there any calculation is involved.




Answers were Sorted based on User's Feedback



Answer / basayya

1600kva transformer
p= root3*v*i*cospai 1600kva*1000=1600000
1600000/1.732*400*1=2309.46

total current= 2309.46
u can use transformer sec side acb 2500A
i think

Is This Answer Correct ?    5 Yes 1 No

Answer / rajeshsan

The circuit breaker is selected based on following factors.

1. Voltage level
2. Fault current.
3. Type of Breaker.
4. Operating Time.
5. Number of operations.

Is This Answer Correct ?    1 Yes 0 No

Answer / akshay gupta

it depends on the condition where transformer is put into
the service in the power systems because impedence vary
with these so fault current also varies

Is This Answer Correct ?    1 Yes 0 No




Answer / lokesh ranjith

Depend upon the contract demand the transformer will be
nstalled for full load ex: input will 850AVCB
output will be 2500A

Is This Answer Correct ?    4 Yes 4 No

Answer / baskaran.r

the high voltage side the rating will be according to fault
level of the system and primary current. the secondary
rating also according to the full load current of the
transformer

Is This Answer Correct ?    2 Yes 3 No

Post New Answer



More Electrical Engineering Interview Questions

HAI,HOW TO SET THERMAL OVERLOAD RELAY FOR DOL STATRTER FEEDER AT START AND RUNNING?

4 Answers   L&T,


IF ANY MATERIAL AVAILABLE IN MARKET FOR MOTOR PROTECTION INSTEAD OF OLR & CONTACTOR ?

1 Answers  


How can we design MEP services for Commercial Building in area about 22 Acres of land?

1 Answers  


What happens instead of using 3 phase, if we give loop of single phase to all three phases ??

1 Answers  


What is the accepted limit to increase the choosen transformer capacity over the load and why ?

1 Answers  






What is slip in induction motor?

3 Answers  


WHY BREAKER ARE USED IN SUBSTATIONS?

0 Answers   Fedco,


WHY FEEDERS TRIP IN COLD AND FOGY WEATHER?

2 Answers  


why it is so called as xlpe(cross linked poly ethyline) cable?

0 Answers  


what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

1 Answers  


What is Servo Ventilated Motor?

0 Answers   L&T,


why a single phase induction motor has poor power factor

0 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (4616)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3692)
  • Electrical Engineering Interview Questions Electrical Engineering (15721)
  • Electronics Communications Interview Questions Electronics Communications (2631)
  • Chemical Engineering Interview Questions Chemical Engineering (755)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (79)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2863)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (41)
  • Marine Engineering Interview Questions Marine Engineering (60)
  • Power Plant Engineering Interview Questions Power Plant Engineering (168)
  • Engineering AllOther Interview Questions Engineering AllOther (1331)