Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / raul
basically there r 3 types of faults..... transient fault
(80%), semi-permanent fault (12%) and permanent faults
(8%). transient fault occurs only for a small duration, the
CB is opened for a short duration of time so dat d cause of
failure is cleared and the line is re-closed by closing the
CB. for semi-permanent faults which r basically due to a
twig falling on d line or a bird spanning around a
conductor.......the auto-reclosing after the cause is burnt
away.........and finally the permanent faults ie single
phase permanent fault n 3phase permanent fault.....for 1-
phase fault, the remaining two phases r operational n the
faulted phases is taken out for repairs n after d repair is
done the line is reclosed n for the other 3-phase fault,
the complete 3-phases r taken off for repair n after d
repair is done, all d 3-phases r reclosed
| Is This Answer Correct ? | 8 Yes | 2 No |
Post New Answer View All Answers
what is meant by residual over voltage & residual earth fault ?
Define de-sensitivity?
why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding
what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.
I need the list of Universities who have summer intake for BS degree in Electrical Engineering.?
WHY RATING OF VCB NOT LESS THAN 630A
Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????
Explain The Application Of Storage Batteries?
What should be the percentage increase in length of the dead end clamp for bus bar conductor (Hawthorn) after hydraulic pressing and what should be the applied pressure?
What is super thermal power plant? and how it will differ from normal thermal power plant
why fractional pitch winding generally used in alternators?
Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?
Explain how to determine capacitor tolerance codes?
Write the analogous electrical elements in force current analogy for the elements of mechanical translational system.
According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?
