[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: ballast



Original poster: "Daniel McCauley" <dhmccauley@xxxxxxxxxxxxxxxxxxxxxxxxxx>

And the question is . . .

Where can one find two 10kVA Supercil grade C cores?

Anyways, glad to see you back on the list.  Hope you are feeling better and
make a full recovery!

Dan


> You can use two 10 kVA Supercil grade C cores strapped together with > stainless steel strapping (don't use steel or iron). Cross section needs to > be approx 3 1/2 x 4 inches depending on the power level you intend to > operate. These cores are gapped with plastic or Nomex on both sides at .080 > inches. Total inductance required is around 140 mHy if you are running a > variac for voltage control. This requires approx 120-130 turns of 8 to 10 > AWG wound on an insulating box around the core. Don't use 12 AWG as it will > overheat because the core is bumping up against saturation on it's current > peaks. Also a good idea to a small 100 CFM cooling fan across the reactor > windings. Space wind the windings with some 1/4 x 1/4 inch phenolic sticks > to provide good air circulation. > > We run this type of reactor at 7-12 kVA levels with our pole xmfrs. > > Dr. Resonance > > > > Can anyone please tell me how to design a ballast or > > what I could use as a ballast for a pole pig? E-mail > > me at dimon20042004@xxxxxxxxx > > > > Thanks in advance:) > > Robert > > > > > > > > > > >