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Re: [TCML] The Dreadful Task of Ballasting (longish)



Hey Harvey...

Do what? Why not just hook the inductor up to a variac and amp meter and start at 0 volts and increase the voltage in X number of volts and read the amps pulled on the meter at each succesive reading untill saturation occurs ( basically a severe increase in amps drawn) and then input the curve of amps drawn and voltage applied to get the inductance/ohms of the inductor? Thats pretty much how I determined how to set my inductor to 60 amps at 280VAC. I set the gap to a certian point and brought the voltage up to 280VAC and took a look at the meter. If it was too low, I closed the gap untill I got the reading I needed. sometimes the try it till it works does the job...

Scot D



Harvey Norris wrote:

snipperz...
I would series the inductor with a larger wattage load such as a 200 watt incandescent bulb. Estimate the inductor as a total value of inductive reactance; note the drop in amperage to the bulb,(as a pure resistance) and apply trig to the problem. The new value of conduction should be based on the ohmic value of the hypotenuse with y as X(L) and bulb resistance as the x coordinant.
HDN
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