Hioki BT3554-50, Instruction Manual, Page: 168 / 188

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Effects of Eddy Currents
11.2 Effects of Eddy Currents
The AC current generated in the instrument induces eddy currents
in the surrounding metallic plates. This could induce voltage in the
test lead.
Since there is a phase difference of 90 degrees from the AC current
(reference signal), the induced voltage cannot be eliminated with
synchronous detection, resulting in measurement errors
The effects of eddy currents is a phenomenon unique to ohmmeters
that measure resistance using an AC source. To protect the test
lead from such effects, keep metallic parts, including metallic plates,
away from the test lead (branched section).
HIOKI BT3554F961-00 HIOKI BT3554F961-00