Re: OLTC primary loss measurement

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-paradise-dot-net.nz>

Greetings Terry et al

I wonder if it's practical to actually measure the IGBT lossses directly
1) Operate coil in still air environment
2) Run near full power until in thermal equilibrium
3) Do the sums for the heatsink thermal d(temperature) from its published
thermal resistance to air.
4) Thus directly derive power driving the thermal rise.
5) Compare with power I/P and volia
Best
Ted L in NZ