why we do 2 types of earthing on tranformer ie:body earthing
& nutral earthing , what is function.
i am going to instal a 5oo kva tranformer & 380 kva DG set
what should the earthing value
Answer Posted / nitin naik
1)Body Earting:- It is a part of earthing process were we
are connecting the metallic part of the equipment to the
general mass of the earth (earth is a zero potential) to
ensure any leakage current due to failure of the insulation
of the active conductor. If it is not ensured & suppose
there is leakage current it may cause electrical shock to
the person touching the metallic part of the equipment.
2) Neutral Earting:- It is being ensured & essential where
we are installing distribution transformer (Delta to star)
& Three phase neutral DG set, Neutral earting is the
process of earthing the star point of the secondary winding
of transformer & star point of the alternator winding to
the general mass of the earth. It is essential to eliminate
the return current in neutral due to unbalanced voltage &
further to eliminate unbalance potential between the
circuits.
Note:- In both the case earth setups resistance should
below 2 Ohms.
Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.
what is mean by dry frequency
what are carbondioxide and dcp used in fire extinguishers
What do you mean by cogeneration? What its working principle?
Write masons gain formula.
Which device is used for the source of emission of electrons in a crt?
what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?
how can we select the appropriate VCB ?
What is resolution of a measurement?
how can we change the phase angle b/w two phase?
Is phenomenon of resonance is harmfull fr the machine? if not or if yes please explain it?
why the neutral line is not giving shock to us if we touch it ?
what is the principle of operation of tungstun bulb ??
AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?
According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?