Packing List; Appendix; Appendix 1 Influence Of Eddy Current - UNI-T UT677A Operating Manual

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What capacity (Ah) battery internal
resistance and voltage can be
measured?
X. Packing List
Note: The monitoring software can be downloaded from Uni-trend official website.

Appendix

Appendix 1 Influence of Eddy Current

The AC current generated by this instrument induces eddy currents on nearby metal plates.
Affected by this eddy current, an induced voltage will be induced on the test line.
Since the induced voltage and the AC current (reference signal) differ by 180 degrees in phase
angle, it cannot be eliminated by synchronous detection, which leads to measurement errors.
The influence of eddy current is a phenomenon unique to resistance meters for AC
measurement. In order to avoid this effect, do not place metal plates near the test line (where it
splits into two strands), and avoid close to metal plates.
This meter uses AC signals for measurement, and DC
current does not flow into the meter. Therefore, there is no
restriction on the capacity (Ah) of the battery under test.
Meter
Test lead
USB cable
Power adapter
Manual
Instrument box
1pcs
1 set
1pcs
1pcs
1pcs
1pcs
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