For 4-wire WYE-to-WYE (partial) configurations, delta-to-WYE
configurations, and 3-wire WYE-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.
Note
You can convert L-N measurements to channel-
to-earth ground by adding the Neutral terminal
measurements to each of the AI channels.
High-Vibration Application Connections
If your application is subject to high vibration, NI recommends
that you follow these guidelines to protect connections to the
NI 9242:
• Use ferrules to terminate wires to the detachable connector.
• Use the NI 9967 backshell kit.
26
|
ni.com
|
NI 9242 Getting Started Guide