Quote:
Originally Posted by kalee20
Quote:
Originally Posted by ChristianFletcher
I have run the transformer for about an hour and it just gets warm to the touch. Just by feel I don’t think the temperature change is very much different for on or of load. Again I guess this indicates that for this transformer it the core losses that dominate.
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It sounds very much like it!
While you have the measuring equipment out, can you share with us the winding resistances; the open-circuit voltage (tell us the primary voltage!); and the full-load voltage (at the same primary voltage).
The no-load and full-load primary currents would be good to know, too.
I can do some number-crunching then! |
P1 Primary
P2 low voltage tapping 200-220V
P3 high voltage tapping 230-250V
For no particular reason I did the test using the P2 Tapping at 210V
Primary Resistance P1 - P2 292.5 Ohm
Primary Resistance P1 - P3. 337.0 Ohm
Secondary S1 - S2 372 Ohm
primary Voltage 210V Secondary Voltage 171V unloaded
primary Voltage 210V secondary Voltage 159V @ 20mA load
Impedance Voltage 14.9V