which fault current is maximum: 3 phase short circuit, LG,
LL or LLG?? why??
in one of the problems that i have solved, 3 phase short
circuit current on an unloaded generator came out to be
less than the LG fault current. can anybody please explain
why.
- 2 Answers
- 9830 Views
- Bhel, I also Faced
- E-Mail Answers
Answer Posted / dr rajan
It is always the 3 phase bolted fault. Check your problem
again. You may have made a mistake. Why 3Ph fault current is
high?
When all phases are grounded or shorted, the impedance is just
let us say X in each phase leading to V/X x 3 times. where as
when you have LG, you will include the line impedance in
series with X, equals X+xL, which is more than X on 3Ph short
ckt. When you divide V/(X+xL) what will you have???? More
current or less current???????
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?
what is the difference between STAR and DELTA connection and application wise how it can be utilizedd
In siemens PLC, why do we want to move the data ?
Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?
how to check avr of dg set of 125kva
A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is
what is meant by flywheel and its role in retardation test
what is the maintaining Cf in UPS.
Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not
is IS says that neutral should be brought to switch box. and this one is a recomended practice
Write the force balance equation of ideal dashpot element.
Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.
Yazaki india pvt ltd interview questions qurey related
distribution transformer de-rating formula on over limit iron losses
why the neutral point in connnection oscillates?
