Interested to Buy Any Domain ? << Click Here >> for more details...
why fault current always calculated for 1 seconds?
- 3 Answers
- 4938 Views
- Coca Cola, I also Faced
- E-Mail Answers
Answer Posted / adnan
Fault current is too large, about 7 times the normal current. If this current flows for longer time, it will burn all the equipments. So, breakers are designed to operate in 0.3 sec, 0.5 sec time if fault is not cleared in this time.
So such large current, even 1 sec is too long time.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is instrumental error?
What is the difference between multimeter
sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com
1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to reconfirm its base capacity.
plz tel me syllabus and exam date 4 jr executive engg (electrical)
What is meant by load angle of an alternator? Upon what factors does the load angle depend?
Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.
What is vacuum circuit breaker.define with cause and where be use it device?
Draw the single line diagram of the power station?
can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you
by what factor the starting current is used when comparing star and delta connection for motor starting?
What is meant by Load Encroachment in OHL Feeder Protection?
how to select electrical equipment such as fuse,dg,transformer,motor,msb,wire,cable as per the connecting load..please mention any books to design,take licence
why output is out of phase in case of common emitter?
For a stable system, where should the poles of a system be in a root loci plot?
