Hi Wyatt,I've never done it myself. Since Aron has, I guess it is possible. Under oil is a good idea, but remember regardless of shunts or not, those secondary windings are voltage fragile. When removing the shunts, the current is going to climb and the tranny impedance lowers. With my 12/60 with 1/2 the shunts, I measured about 200mA. So the impedance dropped from 200k down to 53k (10.6kV@200mA when tranny was last measured). The reason I mention this is that to keep a tranny in long life, LTR is a great help. Problem is, LTR value jumped from .02uF to .075uF and even the resonant value is now up at .05uF.
If you don't make some system changes, you can inadvertently hit resonance depending on the cap value. If you know the change made, then you can design around it. I'm running my NST coil about 2.7 times lower than Cres with no problems (safety gaps, gap widths, etc. are of course important).
Take care, Bart nancylavoie@xxxxxxxxxxx wrote:
Bart, I was wondering if you would know off hand if it is feasible to completely remove the shunts of a 15/60 NST without burning up the secondary winding? Any estimate as to what the current output might equal when used in a TC? Any comparison to the durability of MOT's? Looking for a winter project. Wyatt
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