Interested to Buy Any Domain ? << Click Here >> for more details...
what is power frequency withstand and impulse withstand of a
circuit breaker?
- 2 Answers
- 23182 Views
- Power Grid, I also Faced
- E-Mail Answers
Answer Posted / raghavendran
power frequency withstand capability of a CB is its
capability to with any over voltage at system frequency for
a definite period of time say 1min.
Impulse frequency withstanding capability is to withstand
the impulsive voltage levels for a predefined period of
time.say 1.2(rise time)/50 microsec(fall time),100KV
say(impulse voltage level)
| Is This Answer Correct ? | 15 Yes | 3 No |
Post New Answer View All Answers
Saving in copper achieved by converting a 2 winding transformer in to an auto transformer is determined by A voltage transformation ratio B load on secondary C quality of core material D size of transformer core
What are the effects of adding a zero to a system?
from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?
How to measure size of cable on a given load
hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx
Tell me in detail about c.t. And p.t. ?
What is steady state response?
Explain Active power,reactive power,how its related to each other , & inductive ,capacitive.
how much GROUND & NEUTRAL VOLT maintain in data center.
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok
how freewheeling diode improves the powerfactor
one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..
3phase cable calculation formula by motor load
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
What is synchro?
