What is the function of earthfault relay?
Answer Posted / micro power system, bangalore.
Actually earth fault relay's function is,it calculates the
vector sum of all the three currents flowing in R Y B
lines. If the vector sum is not zero then there is a fault
current flowing in particular line. since these lines are
connected to load say generator then, more than the rated
value of current flowing through windings ,hence windings
will damage so to prevent these type of damages EFR is
used.
if any comments pls send to shreeshara@gmail.com
Is This Answer Correct ? | 123 Yes | 18 No |
Post New Answer View All Answers
what are the stresses in circuit breakers ?
how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)
How to calculate earth wire load by formula
Is a d.c.compound motor is use as a booster? how?
how to calculate fault level?
Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?
Please explain me abt PQ diagaram in the power sector.
how does an encoder work???
what is model question rrb junior engineer electrical gr.II
what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.
How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?
Why line VTG = √3 phase VTG in star? How?
Why can't we take NO LOAD TRIAL of motors having V1 mounting??
which pump used in STP
Define resonant frequency?