GE PQM II, Instruction Manual

Page: 149 / 216

CHAPTER 6: MONITORING
PQMII POWER QUALITY METER – INSTRUCTION MANUAL 6–11
Power metering actual values are displayed in this page. The
S1 PQMII SETUP ÖØ CLEAR DATA
ÖØ
CLEAR MIN/MAX POWER VALUES
setpoint can be used to clear the minimum and maximum
values. FIGURE 6–1: Power Measurement Conventions for the convention used to describe
power direction.
•
THREE PHASE/A/B/C REAL POWER : The total RMS three phase real power as well as
individual phase A/B/C real power is displayed. The phase A/B/C real power messages
are displayed only for a “Wye” or “3 Wire Direct” connections. The PQMII shows
direction of flow by displaying the signed value of kW.
• THREE PHASE/A/B/C REACTIVE POWER : The total RMS three phase reactive power as
well as the individual phase A/B/C reactive power is displayed. The phase A/B/C
reactive power messages will be displayed only for a “Wye” or “3 Wire Direct”
connected system. The PQMII shows direction of flow by displaying the signed value of
kvar.
• THREE PHASE/A/B/C APPARENT POWER : The total RMS three phase apparent power
as well as the individual phase A/B/C apparent power is displayed. The phase A/B/C
apparent power messages will be displayed only for a “Wye” or “3 Wire Direct”
connected system.
• THREE PHASE/A/B/C POWER FACTOR : The three phase true power factor as well as
the individual phase A/B/C true power factors is displayed in these messages. The
phase A/B/C true power factor messages will be displayed only for a “Wye” or “3 Wire
Direct” connected system.
• 3 Φ /A Φ /B Φ /C Φ kW MIN/MAX : The minimum/maximum three phase real power as
well as the minimum/maximum individual phase A/B/C real power is displayed, along
with the time and date of their measurement. This information is stored in non-volatile
memory and will be retained during a loss of control power. The phase A/B/C
minimum/maximum real power messages will be displayed only for a “Wye”
connected system.
• 3 Φ /A Φ /B Φ /C Φ kvar MIN/MAX : The minimum/maximum three phase reactive power
as well as the minimum/maximum individual phase A/B/C reactive power is displayed,
along with the time and date of their measurement. This information is stored in non-
volatile memory and will be retained during a loss of control power. The phase A/B/C
minimum/maximum reactive power messages will be displayed only for a “Wye”
connected system.
MESSAGE
C
Φ
kVA MIN = 1007
12:00:00am 01/01/95
MESSAGE
C
Φ
PF MIN = 0.99 Lag
12:00:00am 01/01/95
MESSAGE
C
Φ
kW MAX = 1000
12:00:00am 01/01/95
MESSAGE
C
Φ
kvar MAX = 120
12:00:00am 01/01/95
MESSAGE
C
Φ
kVA MAX = 1007
12:00:00am 01/01/95
MESSAGE
C
Φ
PF MAX = 0.99 Lag
12:00:00am 01/01/95