CT Burden: Long cable length
CT Burden: Long cable length
(OP)
Aside from specifying larger cables to reduce the total burden on long paths, does anyone make something like a current mirror to reduce the burden on a CT by not forcing it to do the driving? I see using something like GE's Brick can do something like this by going 61850 and returning the measurements with digital but I think 61850 would be a hard sell with it being new.






RE: CT Burden: Long cable length
RE: CT Burden: Long cable length
Have you looked at optical CT's?
Higher burden capable CT's, or CT's in series?
RE: CT Burden: Long cable length
Maybe, they will get different CT's. I hadn't thought of putting them in series if possible but then you tie up both sets of CTs.
I thought there might be something just like a transducer since that resolves any issues you have with the burden and that isn't a new problem. The Alstom transducers I have found that could be used have too much lag for transmission relaying anyways.
RE: CT Burden: Long cable length
Regards
Marmite
RE: CT Burden: Long cable length
RE: CT Burden: Long cable length
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: CT Burden: Long cable length
RE: CT Burden: Long cable length
#10 AWG is 1ohm/1000ft.
What burden are trying to get it down to?
Using #8AWG or #6AWG is pretty simple, or you could double-up #10AWG.