what is difference between earth fault& restricted earth
fault.
Answer Posted / harnish desai
REF will detect earth fault within its equipoment & work on
principal of vector sum of Ir + Iy + Ib + In = 0.
Ef relay will sense current in only neutral CT & operate
relay.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
what are inherent currents?
what is the difference between STAR and DELTA connection and application wise how it can be utilizedd
What Should be the value of Vector Surge angle at Tripping and how to calculate it?
What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?
how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.
What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.
what is per unit calculation?looking for simple and strong explanation thk u
Why do not we prefer non conventional sources of energy to conventional sources?
What is an ideal transformer?
I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.
What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV
Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel
What is Negative Potential Bias
how do i commission a distribution transformer knowing all its ratings and transformation ratios?d
HOW CAN I GET 5CORE HO7 CABLE SIZE IF I HAVE 1800A?