Connection Guidelines - National Instruments 9242 Getting Started Manual

transformer ratio to get readings that refer to the primary of the
potential transformers.

Connection Guidelines

• You must use 2-wire ferrules to create a secure connection
when connecting more than one wire to a single terminal on
the NI 9242.
• Make sure that devices you connect to the NI 9242 are
compatible with the module specifications.
To ensure that measurements to chassis ground are correct, NI
recommends connecting the chassis to earth ground using the
chassis grounding screw. Refer to your chassis manual for
information about connecting the chassis to earth ground.
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If using a 320:1 ratio potential transformer,
Tip
multiply the readings by 320.
NI 9242 Getting Started Guide | © National Instruments | 25