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126 HRB1684301-01
Chapter 14—Maintenance and upgrades PowerLogic™ PM5500 series user manual
Phasors can be used to troubleshoot incorrect connections on the meter’s voltage and
current inputs. The phasors can reveal switched phase wiring or polarity errors.
NOTE: If two phasor lines overlap (i.e. if they have the same relative phase angle), only
one phase label is visible as phasor diagram labels are overwritten dynamically on the
display panel.
Maintenance log
The meter’s maintenance log can be accessed using the webpages. See “Diagnostics”
on page 59.