we are operationing 3NOs 800 Kva generators by
singronyus.specialey evening time our panel trip. the panel
showing generator earth fault
Answer Posted / k.prakashchandra
Which relay ? SEFR or back -up EFR ? Are the gens connected
to grid ? Whether all the gens trip simultaneously ?
Whenever there is a momentary heavy earth fault in the
outgoing feeder,all the gens trip on back-up EFR with
instantaneous trip indication,though the line does not
trip.So ,it is advised to disable instantaneous fault trip
i.e. high-set of the back-up EFR.
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
explanation of mesh bus bars
the winding of Generator and Motor is star or in delta ? and why
how does commutator convert a.c to d.c?
how we design a pannel to start 10HP motor with the help of star delta starter?
What technology is used in latest generators?
What is negative sequence over voltage element?
HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????
working principle of oil startar
how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???
What is the difference between type1 and type2 relay protection co-ordination for motor feeders
how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer
which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant
What is a slack bus?
Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.