Recent content by Voncarsteine

The fence is `1.8 meters high. Support structure is steel and earthed. It does run parallel, at a distance of 5.8 meters from the wires of the outer most phase. I thought bundling was done to meet current requirements, 2000A i think. But thanks!

It should be designed by engineers with proper tools, I totally agree with that. I don't think the contractor used software for this; they relied on math as I displayed in the original post. Their client, a HV network operator, claimed the contractor failed to comply with the contract...

Thank you! I can: 1) It's 150 kV stations, where the requirement is that the electric field outside the fence is max 5 kV/m. The wires are 5.4 m above the ground. The wires are a bit weird: there's two wires per phase hanging 10 cm from each other. The distance between sets of these is wires is...

Hmm that's too bad. My problem is the client is now blaming me for losing their legal fight. Despite the contract being crystal clear. It's for my own satisfaction. I don't understand the mentioned equations. If somebody could please work out this calculation for me I'd sleep much better. If the...

The client depended on this document: https://www.ijareeie.com/upload/2015/august/87_Analytical.pdf Requirements were a maximum electric field strength of 5 kV/m and my client was responsible for design and proving requirements were met. However; From what I can tell, there is an error in...

I see, thanks. Makes sense as well.

please do :) I also found https://www.ijareeie.com/upload/2015/august/87_Analytical.pdf Trying to follow that as well but I'm stuck on the matrix part

E to me is the electric field caused by applying a voltage on the wire. That field radiates out from the wire with 1/r. EMF is the force on a charged particle CAUSED by that field. My original question was about calculating the field strength at a certain point. I can calculate the magnetic...

Hmm, ok I can live with that. But Faraday's law does state that I can calculate E from B? So, let's take a 20 A current in a round copper wire on a 15 Vac voltage. On a distance of 2 meter from that wire, in vacuum, this current will create a B field of (4*pi)^-7 * 20 / (2*pi*2) = 20^-7 T or...

Thanks for your reply! https://physics.info/em-waves/#:~:text=The ratio of the electric,to the speed of light.&text=This knowledge can then be,expression containing the electric field. E/B = c here. With a derivation I can understand.

So, basically I can follow the math deriving E/B = c from Maxwell. And I can calculate B and H from I: H = I/2*pi*r and B=uH. Easy. So, for example I take a 2000 A, 50 Hz, current and a distance of 2 meter from that current in a round conductor. H and B are set: H = 160 A/m and B = 0,2 mT...