why we generally use 3.5 core cable or in other word 1/2
core for neutral and also confirm me that in balance
conditiob(3 phase)current in neutral will zero
Answer Posted / raju chetiar
Normally Neutral conductor is 1/2 the size of other
conductor.It is theoraticaly expalin that In a three phase
circuit ( Equal load in all three phasse) there will be
Zero current in Neutral, Ex. 3phase indusction load (Motor)
(NO NEUTRAL CONNECTED T OANY MOTORS AS THE RESISTANCE OF
THE THREE WINDINGS ARE EQAL).
But in a three phase to single phase distribution
(Resistive loads) it is not possible to maintain the equal
load in all three phases hence the unbalance current has to
be taken away from the circuit for the healthy opertion of
the equipmetns.
Thearitically and also practically it is prooved that the
flow of unbalance current in the 3 phase resistive load
distribution is always less than 1/2 of the phase current.
So 1/2 caore has been taken as a neutral
Is This Answer Correct ? | 10 Yes | 5 No |
Post New Answer View All Answers
what causes contact chatter when there is no demand on the air conditioning unit?
How many types of probe used in cro?
what is the purpose of using filters in a protective relaying scheme?
Explain the working principle of Synchronous Generator and Assynchronous generator?
Benifits of 3ph 4 wire metering over 3ph 3 wire
what are problems caused by the pdu in rack server
If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma
How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Control cables in S's will carry 1000v which is AC R DC? Pls answer meĀ
Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?
how the characterstics of control valve being done
difference between servo motor and synchronous motor
What is the meaning of HT Trivector Meter ?
what is the difference between c power and U power acb breaker