IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY
IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY
IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER
CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

Answer Posted / k.prakashchandra

In case of over current and earth fault protection (relays
)scheme,the unbalanced current passes through the EFR

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

1854


Explain the term parallel path in dc machin ?

1857


Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

1732


wat is the first thing dat is needed, 2 lay a cable in some area??

1506


Why is a synchronous motor always star connected??

2213






How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"

1553


how i calculate the syncrones generator NGR resistance .if we have a 6mw generator line voltage of generator 11kv also line current 393.3 ampere.

1762


What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?

1909


What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

1930


Can we use Ccapacitive voltage transformer directly for metering purpose?

1254


How can ou verify the size of conductor 50Sq.mm ACSR

1601


What is A check, B check, C Check & D check for a diesel Generat

1698


what is the minimum voltage require to injure our body?

5921


Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?

1617


if a.c supply is given to the motor,, what happen?

1789