CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER – INSTRUCTION MANUAL 1–17
Timing accuracy: ...................................... –0 / +1 sec.
OVERVOLTAGE MONITORING
Pickup: ............................................................ 1.01 to 1.25 × VT in steps of 0.01
Dropout:......................................................... 97% of pickup
Time delay:................................................... 0.5 to 600.0 s in steps of 0.5
Phases:........................................................... Any 1 / Any 2 / All 3 (programmable) must be ≥ pickup
to operate
Accuracy: ...................................................... Per voltage input
Timing accuracy: ...................................... –0 / +1 sec.
UNDERFREQUENCY MONITORING
Req’d voltage: ............................................ >30 V applied in phase A
Pickup: ............................................................ 20.00 to 70.00 Hz in steps of 0.01
Dropout:......................................................... Pickup + 0.03 Hz
Time delay:................................................... 0.1 to 10.0 s in steps of 0.1
Accuracy: ...................................................... 0.02 Hz
Timing accuracy: ±100 ms
OVERFREQUENCY MONITORING
Req’d voltage: ............................................ >30 V applied in phase A
Pickup: ............................................................ 20.00 to 70.00 Hz in steps of 0.01
Dropout:......................................................... Pickup – 0.03 Hz
Time delay:................................................... 0.0 to 10.0 s in steps of 0.1
Accuracy: ...................................................... 0.02 Hz
Timing accuracy: ±100 ms
POWER FACTOR MONITORING
Req’d voltage: ............................................ >20 V applied in phase A
Pickup: ............................................................ 0.50 lag to 0.50 lead step 0.01
Dropout:......................................................... 0.50 lag to 0.50 lead step 0.01
Time delay:................................................... 0.5 to 600.0 s in steps of 0.5
Timing accuracy: ...................................... –0.5/+1 sec.
DEMAND MONITORING
Measured values: ..................................... Phase A/B/C/N Current (A)
3φ Real Power (kW)
3φ Reactive Power (kvar)
3φ Apparent Power (kVA)
Measurement type (programmable):
Thermal Exponential, 90% response time: 5 to 60 min. in steps of 1
Block interval: ............................................ 5 to 60 min. in steps of 1
Rolling Demand Time Interval: .......... 5 to 60 min. in steps of 1
Pickup: ............................................................ 10 to 7500 A in steps of 1
1 to 65000 kW in steps of 1
1 to 65000 kvar in steps of 1
1 to 65000 kVA in steps of 1
VOLTAGE DISTURBANCE RECORDER
Required voltage: ..................................... >20 V or 10% (whichever is greater) applied in each
measured phase
Minimum nominal voltage: .................. 60 V
Phases recorded: ...................................... all three phases recorded independently
Conversion: .................................................. true RMS, 8 samples/half-cycle
Sag:
Pickup level: .............................................. 0.20 to 0.90 × VT in steps of 0.01
Dropout level: .......................................... pickup + 10% of nominal
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