CHAPTER 5: MONITORING A1 METERING
PQM POWER QUALITY METER – INSTRUCTION MANUAL 5–17
3Φ kW MAX: This message displays the maximum three-phase real power demand (in kW)
and the time and date when this occurred. The setpoint
S1 PQM SETUP \ CLEAR DATA \
CLEAR MAX DEMAND VALUES
clears this value.
3Φ kvar MAX: This message displays the maximum 3 phase reactive power demand (in
kvar) and the time and date when this occurred. The setpoint
S1 PQM SETUP \ CLEAR
DATA \ CLEAR MAX DEMAND VALUES
is used to clear this value.
3Φ kVA MAX: This message displays the maximum 3 phase apparent power demand (in
kVA) and the time and date when this occurred. The setpoint
S1 PQM SETUP\CLEAR
DATA\CLEAR MAX DEMAND VALUES
is used to clear this value.
5.2.7 Frequency
FIGURE 5–9: Actual Values Page 1 – Metering / Frequency
FREQUENCY: This message displays the frequency (in Hz). Frequency is calculated from the
phase A-N voltage (when setpoint
S2 SYSTEM SETUP \ CURRENT/VOLTAGE
CONFIGURATION \ VT WIRING
is WYE) or from phase A-B voltage (when setpoint S2
SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT WIRING
is DELTA). A value
of
0.00 is displayed if there is insufficient voltage applied to the PQM’s terminals (less than
30 V on phase A).
FREQUENCY MIN: This message displays the minimum frequency measured as well as the
time and date at which the minimum frequency occurred. The
S1 PQM SETUP \ CLEAR
DATA \ CLEAR MIN/MAX FREQUENCY VALUES
setpoint clears these values.
FREQUENCY MAX: This message displays the maximum frequency measured as well as
the time and date at which the maximum frequency occurred. The
S1 PQM SETUP \
CLEAR DATA \ CLEAR MIN/MAX FREQUENCY VALUES
setpoint clears these values.
]] ACTUAL VALUES
]] A1 METERING
] FREQUENCY
]
FREQUENCY = 60.00 Hz
FREQ MIN = 59.98 Hz
12:00:00am 01/01/95
FREQ MAX = 60.01 Hz
12:00:00am 01/01/95
]] ACTUAL VALUES
]] A2 STATUS
ACTUAL
MESSAGE
MESSAGE
MESSAGE
Courtesy of NationalSwitchgear.com
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