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The Web site below has formula's to calculate these forces. Good luck http://www.cda.org.uk/megab2/elecapps/pub22/sec6.htm#Electromagnetic%20Stresses

The transformer at 160 deg C hot spot is only 3- 4% above the Max. limit. This should not cause breakdown. Also since this only occurs at 35 deg C ambient there may not be a significant loss of life. However you might consider adding fans to be on the safe side. Good Luck

Field tests on reactors are difficult, because if you apply full voltage the reactor will be at full power You can measure resistance, and since the reactor is probably linear you could apply a low voltage across the reactor and read the current. There are also bridges available that can...

Although the method I'll describe may not be practical to do. It explains a proceedure to accomplish demagnetization. "Energize the transformer no load, and then gradually reduce the voltage to zero. The core will be demagnetized." Good Luck

Inrush current will be at a maximium if the breaker closes on a voltage zero. Of course this can only occur on one of the phases since the other two phases cannot be also on a voltage zero. The book "Transformer Engineering" by Blume includes a formula for this calculation, however you would...

I know Seiman's made some back in the 80's. We also made some in the Company i worked for but only for in house use not for sale outside. The DC primary current saturates the core, so the secondary has an AC voltage applied to unsaturate the core every cycle, This is an over simplfied...

I have not done this, but if I understand the problem this should work. 1) calculate the capacitance above .125uf 2)calculate the Ohms of the above capacitance. 1/2xPIxFxC 3) The above is the required reactor ohms at the rated frequency. Reactorman

The main factors which determine transformer inrush current are as follows: 1)The residual magnetism in the core this will vary from zero to approximately 70% depending mainly on the instantaneous value of the voltage when the previous shutdown occured (this does not happen in a motor as the...