NI 9242 User Manual and Specifications
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© National Instruments
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For delta-to-WYE configurations, follow these guidelines for the
best accuracy results.
•
Connect the Neutral terminal of the NI 9242 to the isolated
ground of the potential transformer to reduce noise between
the potential transformer ground and the chassis ground.
•
Connect the Neutral terminal of the NI 9242 as close as
possible to the isolated ground of the potential transformer.
•
Use the L-N voltage measurements the NI 9242 returns as the
default value.
Tip
You can convert L-N voltage measurements to
channel-to-earth ground by adding the Neutral terminal
measurement to each of the AI channels.