I see.
It seems that you are using the sky wire as a neutral conductor, isn't it?
And in addition, as Jghrist has shown (thank you for your contribution!), somewhere along the line, earth current may be even higher than neutral current.
This makes 3Ø fault indicators difficult to use because of...
Hi Michalakis,
here is how we do in our country:
we have the distribution network based on 20kV 50Hz insulated neutral. Network is typically radial.
We normally use the following protections:
Max phase current, max residual current (threshold: typically 2A), max residual voltage (threshold...
Thank you Stevenal.
Just a remark: if distribution systems in the US are 4-wire multi-grounded, this means that residual current resulting from unbalanced loads is shared between neutral conductor and earth, isn' t it?
I suppose that the neutral conductor impedance is normally much smaller than...
Thank you Bung,
it seems that reasons are based more on customers experience, rather than on regulations or standards.
But now I wonder why in Europe you can find a totally different situation:
Conductor mounted devices are very seldom used, while pole-mounted devices are much more common.
I can...
Good Morning to everybody,
I noticed that in the US the only Faulted Circuit indicators available on the market are Single-Phase type that are installed on each of the Medium Voltage overhead cables using a hot stick.
On the other hand common practice in Europe is to use three-phase...
