How can we decide the fualt levels of sub-stations?

Answers were Sorted based on User's Feedback



How can we decide the fualt levels of sub-stations?..

Answer / akarsh mittal

fault level is given by
I(short circuit)= I(rated)/% impedance
Hence fault level is determined by percentage impedance of a line

Is This Answer Correct ?    13 Yes 0 No

How can we decide the fualt levels of sub-stations?..

Answer / k.prakashchandra

The answer is to be multiplied by 100 i.e. Irated
x100/percentage impedance

Is This Answer Correct ?    9 Yes 1 No

Post New Answer

More Electrical Engineering Interview Questions

induction motor. we have a three phase supply from diffrent source like R= transformer. Y = DG sets. B = ups. if motor is runing.

4 Answers   Birla,


Definition of grid?

7 Answers   L&T, Pace Power Systems, Vijai Electricals,


practicalLY what is impedence ...?

2 Answers  


what is swirl induction in i.c engine????????

1 Answers   Ashok Leyland,


1) What is difference b/w impedence relay and differential relay? 2) what are substations equipments? 3) what is difference b/w circuit breaker and isolator? 4)what are the types of circuit breakers? 5) which medium is mostlty used in circuit breakers and why it is used?

1 Answers   NTDC,






defination of a.c filter

0 Answers  


how to measure the current by compact digital equipment with dislay which fit inside any equipment

0 Answers  


How to calculate ant test the burden of Current transformer

0 Answers   NTPC,


What is the minimum percentage of power that a powerplant can support in ilanding mode ?

1 Answers  


If the load is 10Kw and power factor has to improve from 0.5 to 0.8,how can we select the capacitor rating accordingly.Illustrate by showing formula?

9 Answers  


which is the gas used in tube light?

12 Answers  


why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • 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)