Converting L-N Measurements to L-Earth
To convert L-N measurements to L-Earth values, add the neutral
channel reading to each AI channel reading.
Refer to the following equation for an example of converting L-N
measurements to L-Earth.
Line to Earth = AIx + Neutral
where
AIx is the analog input channel reading
Neutral is the Neutral channel reading
Converting L-N Measurements to L-L
To convert L-N measurements to L-L values, calculate the
voltage difference between the AI channels using your
application software.
Refer to the following equation for an example of converting L-N
measurements to L-L.
Phase A to Phase B Voltage = AI0 - AI1
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NI 9244 Getting Started Guide
