Answer Posted / hirak subhra majumder
In Several sub-stations and power houses a special type of
installations is applied i.e. generally O/C relay for B and
R phase and Earth fault relay for Y phase. From there the
three trip connections are coming out and is connected to
the master trip coil. Now this relay output is connected to
the circuit breaker. Thus the other relays works here as
slave(Not mandatory) and the later one as master controlling
the operation of the circuit breaker.
| Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
Where burned of electricity,when,who, & why.
Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet
IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)
is it possible to start a motor in felid connected to a remote mcc
what is circuit breaker in transfomer and where it used
how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw
what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?
what is the difference between STAR and DELTA connection and application wise how it can be utilizedd
how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.
How DC earth leakage currents can be reduced ?
How to calculate capacitor bank value to maintain unity power factor with some suitable example?
Explain what is rated speed?
Can you explain about TEE protection scheme?
why swinburnes test cannot be performed on series machines?explain
Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer
