Construction of a spark inductor with over 9 cm stroke width

a few weeks ago, I found a nice auction on ebay, which conveniently 2 kilometres offered two-wire hook-up wire. So what would surely do.

So now for the first time ordered IEC 61850 communications the stuff, and then: mrgreen: first think about what you could do.

Oki,... that must be wrapped up around somewhere for the first time. Best reasonable prototype of HV transformers, which should operate at the same time as a spark inductor would be a. Planned or hoped for was an output voltage of 4 up to 8 KV in the Trafofunktion at 20 to 100 mA. As a spark inductor should install it of course as much as possible, but I was not expecting more than 1 cm.

Now for the first time the calculations and procurement of other stuff. In Excel, a help table showed an iron core of over 5 inches from distress would be to get an optimal ratio. Otherwise it would be too small. Around this core, ca 8000 turns would fit at Division of the wire and leaving as bifiliare ca 4000 coils. Both requires about 20 layers. Since the implementation of the Division could be tested only at a convenient time, I had to reckon with both and keep both in mind.

But right now, must now iron ran... but how? Floral wire... 10 kilo? So really you go not... slice pfriemeln the old rabbit Hutch only 2-3,... when I take to the old clothesline then becoming brings much Fortune 5 kilo... so we go not. So I was wondering where the iron could come. There it occurred to me that George einschenkeltrafos built,... exactly the same what I just had. I told him, if he still randomly left had what,... and fortunately he had an almost ideal 12-pound iron core is still lying around (his last full core, he no longer needed). Now the most important there was gigs (iron and wire for the SEC) now on the rest.

A pipe had ran to continue to package band and primary wire. Some foil for improved insulation is also necessary, if it should work with the Division of the wire.

So we went with the "shopping list" to the flea market. Fact Schlich gabs there even a suitable pipe... Package volume was there anyway and insulating foil of brand trash bags: D also.

Primary wire were unfortunately, but the stable nice thick-walled tube for nen few euros did not ever happy.

Now arrived the iron core of the George.

Go Damits as soon as possible could still primary wire from an electrical supply business concerned and then it was waiting for the arrival of the secondary wire. Now the secondary wire was also so slow. A package of 1 km. Where the second well is: think:? No matter... now gewiuckelt must be anyway for now.

The tube itself was first wrapped with tape Brown to "Prime" it. Which protects something from rollovers. Now tried the wire to share... after 2 hours Arbeiot and a short evaluation of the result (20 meters have been converted into 1/4 location), it was decided to choose the alternative and not to share the wire.

There was now no time. For each location, it took me 30 minutes. The width is 200 coils. Right and left were left 8 cm space so that there is no Übnerschläge.

Between the layers was each one layer Tesa Klar and then applied a layer of Tesa Braun (the two colors his leichteten the check whether both layers are also fully and without interruption).

It was after 2 working days, a stomach-intestinal flu and sore throats as a forced break. I was done with role 1. For the first test, still the iron Partial discharge testing core was wrapped with the primary wire. 3 layers which were notable controlled. These Primärdrahte were ordinary two-wire speaker cable ließén is thus nis 300 turns in 50 steps set.

The first tests of the Trafomodus show has beautiful views... Arcs is unfortunately not formed, but the spark duchs break but showed that tension there was decent.

Meanwhile, the second role has wire. So we went on with the wrapping.