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|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.
S______CT for 67 & 67N ______Breaker _____ remot s/s.
|why the admittance matrix or y bus matrix of a large network
is called sparse matrix?
|suppose a fan is running with phase and neutral. if its neural
is touched to body. then fan get stopped. if this fan is
connected to phase and ground supply..then why it runs?
|selection of conductor in different voltage?
|How to calculate kva? what is the formula.
|I want Primary side delta and Sec side Star connection
transformer . but i have received Star - Star
transformer ,shall i use the same transformer by giving the
only 3 ph on Primary side without Neutral connection on the
|How to select busbar?
|which one is rotating transformer-single phase induction motor or 3 phase squirrel cage motor?
|what is the method of electric earth for the protection of
low voltage electric equipment
|Why we are checking the vector group & turn ratio of
Xformer while PM?
|if 400kv line is connected to the load but neutral ii not be
connceted then wt ll happen
|difference between the earth mat and earth grid?
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