What is the significance of 3.5 core cable ????

Answer Posted / ashesh shah

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.

Is This Answer Correct ?    25 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1322


how  do you choose the cable size as per amps rating & the voltage drop for the same.

1326


Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2470


how to identify vector group of three phase transformer by voltage method?

1144


can we use CBCT in neutral of solidly grounded transformer? in place of three phases we can pass only one phase which decreases the size of CBCT?

1760






What are the factors influence the choice of an electrc drive?

1583


What test must you do before powering up a circuit that you have been working on?

1384


how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

1454


No load tap changing transformer working

1212


how to calculate the lightning arrester conductor @ no of earth pits required

1594


How will polarity test of Dy5 Transformer ?

1692


A powerplant has 8 gensets operating in grid parallel mode. In one genset sometimes there is pf variation and kvar variation. The plant operates in pf mode. When this variation is observed the load is stable, voltage is also stable, freq and genset speed is also stable. How will you check the functioning of pf card. What shall be the ideal output vdc of the pfc, from there it is input to AVR?

1721


Inductor and capacitor........power in one phase and ...... in it another phase.

1592


WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

1537


WHAT IS THE USE OF PIG TAIL IN WINDOW CT ?

1909