Answer Posted / omar aziz
Resistive or high impedance earthing is classified as IT
system in IEC standards. It is employed where there is a
need to limit the earth fault current to minimium levels.
Primary this id the grounding techinique used in coal
minning where high earth fault currents can lead to
catastrophic fires.
I hope this helps. If yourequire further info there is a
good technical paper on schnider website,
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Why the power factor improvement is so important in industrial loads
What technology is used in latest generators?
Explain what is clipper and clamper circuits?
What is 11 N1 and 12 N2 in single phase Transformer ?
What is the difference between rated and per unit in transformer?
Lt motor sfu flashing reasons?
What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?
What is open loop and control loop systems?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
How to design the NGR Resistance
What is meant by turbo alternators?
why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??
what is the excess air in furnace
what is auto re-closer?
if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.