Interested to Buy Any Domain ? << Click Here >> for more details...
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
- 11001 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
What is meant by time harmonics and space harmonics?
How to select transmission line type (i.e. 11kv or 33kv) for new established industries
how to calculate the fault in substation
1.What will be stored in online ups EPROM IC?
plz tel me syllabus and exam date 4 jr executive engg (electrical)
Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?
how many safety really of DG sets.
what is the Transformer Impedence?How can calculate?
What are the three major categories of error?
HOW MANY TYPES OF FUSE?
how we can explain arc heatng?
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
List the characteristics of filter?
i want to model paper for section engg.
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
