How are calculated the aluminium busbar cross section area?
Answers were Sorted based on User's Feedback
Answer / iamdon
We can use the fundamental relation amoung
Resistance(R),Resistivity(p),length(l) and cross sectional
area(A) of conductor.
R=(p*l)/A
Being busbar made of Aluminium,its resistivity(p),which is
a property of metal and is independent of dimension,is known
(Any handbook on electrical subject provide this technical
detail).
Physical length(l) of busbar can easily be measured.
Resistnace(R) can be measured with the help of
ohmmeter.Since busbar resistane is of small order so we can
also use alternative to ohmeters which works satisfactorily
in small range of resistances.
A=(p*l)/R.
Author:arbelectbit@yahoo.com
Is This Answer Correct ? | 9 Yes | 2 No |
Answer / james bond
Area is simply width*depth,,hahaahah
if u dont know the length of busbar answer no. one fails..
simply u have to calculate the Area of bus bar required for
the given current rating or load kW, which is given in IS
standard.
Is This Answer Correct ? | 5 Yes | 1 No |
Classify drilling machines.
an off load but energized 11/0.4 KV, 1250 KVA T/F has a power factor of 0.65(capacitive)..!! why is it so, though T/F being an inductive device ??
Which lamp will fuse first(1)20(2)40(3)200 three lamps will fuse together
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
What happens if ac is applied to dc systems and vice versa?
We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly
can we use NPT glands in LT panel
operation of diesel generator
How can we get electric power from lighting ?
what is PPI DB?
2 Answers Priyanka Electricals,
what is servo motor principle? difference between induction motor & servo motor?