1–16 PQMII POWER QUALITY METER – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
1.6.5 Metering
MEASURED VALUES ACCURACY (SPECIFIED FOR 0 TO 40°C)
Voltage:...........................................................±0.2% of full-scale
Current:...........................................................±0.2% of full-scale
Voltage unbalance: ..................................±1% of full-scale
Current unbalance: ..................................±1% of full-scale
kW:....................................................................±0.4% of full scale
kvar: ................................................................±0.4% of full scale
kVA: ..................................................................±0.4% of full scale
kWh: ................................................................±0.4% of full scale
kvarh: ..............................................................±0.4% of full scale
kVAh: ...............................................................±0.4% of full scale
Power factor: ...............................................±1% of full-scale
Frequency: ....................................................±0.02 Hz
kW demand:.................................................±0.4% of full-scale
kvar demand:...............................................±0.4% of full-scale
kVA demand:................................................±0.4% of full-scale
Current demand: .......................................±0.4% of full-scale
Current THD:.................................................±2.0% of full-scale
Voltage THD: ................................................±2.0% of full-scale
Crest factor:..................................................±0.4% of full-scale
MEASURED VALUES RANGE
Voltage:...........................................................20 to 100% of VT
Current:...........................................................1 to 150% of CT
Voltage unbalance: ..................................0 to 100%
Current unbalance: ..................................0 to 100%
Real power:...................................................0 to ±999,999.99 kW
Reactive power: .........................................0 to ±999,999.99 kvar
Apparent power: .......................................0 to 999,999.99 kVA
Real energy:..................................................2
32
kWh
Reactive energy: ........................................2
32
kvarh
Apparent energy: ......................................2
32
kVAh
Power factor: ...............................................0.00 to ±1.00
Frequency: ....................................................20.00 to 70.00 Hz
kw demand:..................................................0 to ±999,999.99 kW
kvar demand:...............................................0 to ±999,999.99 kvar
kVA demand:................................................0 to 999,999.99 kVA
Current demand: .......................................0 to 7500 A
THD (current and voltage): ...................0.0 to 100.0%
Crest factor:..................................................1 to 9.99
1.6.6 Monitoring
UNDERVOLTAGE MONITORING
Req’d voltage: .............................................>20 V applied in all phases
Pickup:.............................................................0.50 to 0.99 × VT in steps of 0.01
Dropout: .........................................................103% of pickup
Time delay: ...................................................0.5 to 600.0 s in steps of 0.5
Phases:............................................................Any 1 / Any 2 / All 3 (programmable) have to be ≤
pickup to operate
Accuracy:.......................................................per voltage input