S
Ste69
I know you take the highest reading, though not sure if you take the highest reading on the ring circuit or a spur off the ring circuit?
cheers
cheers
Discuss R1+R2 of a ring circuit in the UK Electrical Forum area at ElectriciansForums.net
OKexcellent, cheers!
just to clarify
For when comparing r1+r2/4 to R1+R2, do i use the ring highest value or the spur highest value?
OK
the calculation of r1+r2/4 to give you (R1 R2) around the grounds so to speak does not take into account spurs....think about what r1, r2 & rn is.....:
end to ends...yes?
the value of (R1 R2) should be r1+r2/4.....we know that...yes?
the value off all points on the ring should be a Max. of 0.05 of each other....a spur will manefest itself by being considerably higher....thats how you will/should know its a spur.
its the highest value you would be putting down as the (R1 R2) of the circuit....this would be likely to be a spur...should there be any....
as long as all the points actually on the ring were stable..(to within 0.05 of ohm)..then yes...Thanks a lot mate!
Sorry. one more question.
so if the reading of r1+r2/4 is not the same as R1+R2, is that ok because we are using the spur reading for R1+R2?
say on the ring you have r1 0.33 r2 0.56 rn 0.33............on the ring all readings are 0.25 but on the spur its 0.36....soooo the R1+R2 is 0.36. If you use r1+r2/4= 0.23. so it is off by 0.13 but with the 0.25 reading its ok.
are these readings good then?
really sorry, just want to get my head around this.
not quite....lolContinuity of the line conductor proving correct polarity
yep...well doneOk end to end first check it's a ring
no.r1 and r2 /4 added to Ze to check if ZS complies
no...Yes in the second part of test these values should be half of the values in the first part
Reply to R1+R2 of a ring circuit in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.