The 3 indicates RYB and .5 Neutral. In normal conditions,
power supplied is balanced. So, no neutral current flows.
But in case of small unbalanced condtions, low amount of
neutral current has been found and hence to provide the
path for it, neutral wire is provided with half of the
cross section that of phase.
I've just got into my electrical engineering course and I need some help with a question of mine here.
During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz.
From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.
Can u explain : how capacitor act when the supply is given
is a.c and d.c.
I know that when d.c supply is given then the capacitor
charges and becomes open circuited.
But please say about when a.c is given.
I have seen that when a.c supply is given ,it charges and
But when we plug in capacitor to our daily supply and take
it out ,then we join those wires spark will appear,which
seems charge is present ,but when a.c is given it should
charge and discharge