CHAPTER 5: MONITORING A1 METERING
PQM POWER QUALITY METER – INSTRUCTION MANUAL 5–13
during a loss of control power. The phase A/B/C maximum reactive power messages will be
displayed only for a WYE connected system. The setpoint
S1 PQM SETUP \ CLEAR
DATA \ CLEAR MIN/MAX POWER VALUES
is used to clear these values.
THREE PHASE/A/B/C kVA MAXIMUM: The maximum three phase apparent power as well
as the maximum individual phase A/B/C apparent power is displayed in these messages.
The time and date at which these maximum values were measured is also displayed in
these messages. This information is stored in non-volatile memory and will be retained
during a loss of control power. The phase A/B/C maximum apparent power messages will
be displayed only for a WYE connected system. The setpoint
S1 PQM SETUP \ CLEAR DATA \ CLEAR MIN/MAX POWER VALUES is used to clear these
values.
THREE PHASE/A/B/C PF MAXIMUM: The maximum three phase lead or lag power factor as
well as the maximum lead or lag individual phase A/B/C power factor is displayed in these
messages. The time and date at which these maximum values were measured is also
displayed in these messages. This information is stored in non-volatile memory and will be
retained during a loss of control power. The phase A/B/C maximum lead or lag power
factor messages will be displayed only for a WYE connected system. The setpoint
S1 PQM SETUP \ CLEAR DATA \ CLEAR MIN/MAX POWER VALUES is used to clear these
values.
FIGURE 5–6: Power Measurement Conventions
Courtesy of NationalSwitchgear.com
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