Hello to everyone,
i am trying to understand the way i can calibrate the ADE 7880 in both cases, in which i have two boards. The first board is supposed to be used measuring with Rogowski coils and for the second one CTs are planned to be used for measuring the current. After reading the appropriate documents i realised that:In case i have a Rogowski Coil things are quite simple meaning that i can set my current waveform and my voltage waveform up to +- 500mV being able to set cos(phi) changing the angle (phase) between the 2 channels of the generator. Of course the transform ratio for each Type of the Rogowski Coil must be taken into account.Is the method the same in case i want to do the calibration with the Current transformers? Is it enough when i use the signals of the generator, or do i need to use a current source for the current channels(IA_P,IA_N etc.?) This means that i i have to somehow prepare a current source which can provide the ADE7880 current, when i modify the amplitude of my voltage signal.As you understand i am trying to simulate the signals that the ADE "sees" using the channels of a signal generator.
Hello Gary and thanks a lot for your answer. There is something last that i would like to be defined:In the application note regarding the calibration of the ADE7880, is a unit called calibration inputs. For each calibration step the voltage and the current input must be set correctly. What does mean current Input minimum and to be more exact what does the following paragraph mean :"The minimum current is the minimum current specified in the meter while staying within the specification of the measurement for the AD7880, such as 100mA" What does this mean?Regards, George