Why Neutral Busbar CT & transformer neutral CT connected
with phase CT in Restricted Earth Fault?
- 3 Answers
- 17690 Views
- I also Faced
- E-Mail Answers
Answer Posted / anup mahajan
The purpoae of Restricted earth fault (REF) is to provide
the protection of transformer neutral in case of residual
current. As the fault which lies near phases are known as
external faults and is to be detected by differential
protection but the residual current which is not going to
ground and circulates between neutral and phases are
detedted by REF protection. Please keep in mind that CT
characteristics of this REF must be matched with phase side
CT characteristics.
| Is This Answer Correct ? | 2 Yes | 8 No |
Post New Answer View All Answers
what is difference between bus coupler and auto transfer switch
What do you mean by an instrument transformer?
how to produsing geretor power
what is the concept of directional power?
what is the maximim current drawn by 1 phase and three phase welding machine
What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?
HOW TO CALCULATE ELECTRICAL, MECHANICAL,& OVERALL EFICIENCY OF GAS ENGINE POWER PLANT
why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)
could you measure current in parallel?
What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)
how to select rating of HT Panel
How generating electric power export to grid from the generating station ?
How we calculate the size of ht cable for any transformer
5.WHICH TYPE WELDING PROCESSES USES NON CONSUMABLE ELECTRODE.........
what is cathodic protection and why it use in industries?
