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Hi Sven,
I just did some inductance measurements on some different mains transformers. They ranged from 1.2H to 14H. That gives reactances ranging from 377 Ohm to 4.4kOhm at 50Hz. The high inductance ones have less no load current. A microwave oven transformer was among the low inductance ones. Just remember that the inductance is canceled by the field generated by the secondary when at full load. At full load the phase shift is also canceled because of that same reason.
"Is there also a way to measure capacitors in a simple way and calculate the rest. My 3 capacity meter has now given up and I'm not to blame, it will only show confused values."
Capacitance can be calculated almost the same way by knowing some of the parameters of the circuit and solving for the unknown ones. The capacitive reactance just has the current leading the voltage which is directly opposite to the inductive reactance: https://www.electronics-tutorials.ws/accircuits/ac-capacitance.html https://www.electronics-tutorials.ws/accircuits/ac-capacitance.html.
This makes the reactance negative in value.
For the capacitance meter just check if the fuse is blown. The fuse blows if measuring on a capacitor that isn't fully discharged.
Regards
Ole
---In [email protected], <s.friedrich@...> wrote :
Hello Ole,
Thank you for working with the formulas and the calculation. But as you can see again the cheap meter is no good. 1,368 H are a very different value like 250mH. I have now tuned both transformers over the 250mH value. Personally, I find 1.368H quite high, but maybe that's normal for a 1 kVA transformer that can transform to 24V and deliver a high current.
Is there also a way to measure capacitors in a simple way and calculate the rest. My 3 capacity meter has now given up and I'm not to blame, it will only show confused values. That's to the mouse milking.
I've already seriously considered using Variacs as adjustable reactors.
regards
Sven