Measurement of generator voltage
Measurement of generator voltage
(OP)
I am trying to measure the output voltage of a 3 phase 1 KW asynchronous generator. The Data Acquisition card that I have to use only accepts a maximum of 10V and I was wondering if anybody knew of a good voltage transformer or circuit configuration to use. Specs on the max output we should be recieving are 120VAC max, 10A max. I was told to use a 12V plug in transformer but I'm not sure wether I'll be able to get a good signal out if the input voltage is less than desired such as only 60VAC any help or saftey precausions would be greatly appreciated.





RE: Measurement of generator voltage
If output is only 60V, you should still have a good acquisition, depending on the number of bits of resolution.
Hope this helps
Wheels within wheels / In a spiral array
A pattern so grand / And complex
Time after time / We lose sight of the way
Our causes can't see / Their effects.
RE: Measurement of generator voltage
RE: Measurement of generator voltage
Wheels within wheels / In a spiral array
A pattern so grand / And complex
Time after time / We lose sight of the way
Our causes can't see / Their effects.
RE: Measurement of generator voltage
Suggest a Triad F13X or F1X transformer.
RE: Measurement of generator voltage
The reason is that the core iron gets saturated and since the primary winding is rather high impedance, you will get noticeable third, fifth etc harmonics. You will also get a down-bending Vin/Vout curve at higher voltages. It may or may not be important for your application. Consider using a transformer that is designed to work in the linear region. You can still get away quite cheaply, just select a transformer with a rated voltage about twice the maximum input voltage.
For best results (and highest cost) buy specially designed voltage transformers. They have the accuracy specified.
RE: Measurement of generator voltage
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