Just a silly question but just to make my curious mind bac to normal

Just a silly question but just to make my curious mind bac
to normal - Why was not 67 and 67N
relays built into a single relay as i have noticed that the
R,Y,B CT wiring end up into the 67 relay
while the common of the R,Y,B CT wiring end up into the 67N
relay. Then it was better if a single relay was manufactured
just like the distance relay (21). Another question i would
like to ask is - how do we know where the 67 and 67 N
relay has to be placed.why is it not placed at the
transformer bay? In the substaion that i am working -i have
noticed that it is placed between a breaker and
a common double bus bar and this line bay is connected to
another substation at a remote place which is furthur
connected to a load.

B
U
S______CT for 67 & 67N ______Breaker _____ remot s/s.
B
A
R

Question Posted / bejoypeedikayil

1 Answers
3662 Views
I also Faced
E-Mail Answers

Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N re..

Answer / k.prakashchandra

Such relay is available

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

how to identify 3phase....r y b .A new make altnator how to identify R

2 Answers

what is current actully?significance of current...not rate of change of flow.....

3 Answers

what is the mean of"turbo" in turbo alternator???

1 Answers CCCL,

how inductance related to number of turns in a choke

3 Answers

which is the best book of electrical objective for placement

1 Answers

what is RFCT and Insulgard Relay & It's function?

0 Answers

what is the difference between general inverter and solor inverter clerly explain plz

0 Answers

If there is unit power factor in a power house and a capacitor bank used in a factory at resistive load . In this case, will there leading power factor in power house across that factory.

2 Answers

What is the difference between INVERTER and UPS?

7 Answers

I need the proper answer on :- What is the Earthing Value as per the standard for Raw power and UPS Pit and in panel /DB N-E value ???

2 Answers

compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

0 Answers

bitumar

0 Answers Bhel,

For more Electrical Engineering Interview Questions Click Here