Description Mounted Power Quality Analyser | PQM-750 Parameter Measuring range Max. resolution Accuracy Alternating voltage (TRMS) UL-L MAX = 2000 V for UL-E MAX = 1000 V 0.0…1000.0 V 4 significant digits ±0.1% Udin Crest Factor Voltage 1.0…6.5 (1.65 for voltage of 690 V) 0.01 ±5% Current 1.00…10.00 0.01 ±5% Alternating current (TRMS) 0…20 A 4 significant digits ±0.2% Frequency 40.000…70.000 Hz 0.001 Hz ±0.01 Hz Active power IEC 62053-22 class 0,2S depending on voltage and current ratio 4 significant digits ±0.2% Reactive power IEC 62053-24 class 0,5S depending on voltage and current ratio 4 significant digits ±0.5% Apparent power depending on voltage and current ratio 4 significant digits ±0.2% Active energy IEC 62053-22 class 0,2S depending on voltage and current ratio 4 significant digits ±0.2% Reactive energy IEC 62053-24 class 0,5S depending on voltage and current ratio 4 significant digits ±0.5% Apparent energy depending on voltage and current ratio 4 significant digits ±0.2% cosφ and power factor (PF) -1.000…1.000 0.001 0.05 tanφ -10.000…10.000 0.001 depends on error of active and reactive power Harmonics and interharmonics Voltage DC, 0…256 4 significant digits ±0.05% Udin for m.v. < 1% Udin ±5% m.v. for m.v. ≥ 1% Udin Current 0…256 4 significant digits ±0.15% Irin for m.v. < 3% Irin ±5% m.v. for m.v. ≥ 3% Irin THD-F Voltage 0…20% 0.01% ±0.3% (absolute error) Current 0…100% 0.01% ±0.3% (absolute error) Active and reactive power of harmonics depending on voltage and current ratio 4 significant digits — Angle between current and voltage harmonics -180.0… 180.0° 0.1° ≤0.05° for n = 1 ≤1° for 2 ≤ n ≤ 60 at fnom = 50 Hz ≤4° for 61 ≤ n ≤ 256 at fnom = 50 Hz K-Factor 1.0…50.0 0.01 ±10% Flicker index 0.20…10.00 0.01 ±5% Unbalance factor Voltage and current 0.0…20.0% 0.10% ±0.15% (absolute error) Measurement of control signals Voltage up to 15% Udin at fR = 5…30000 Hz 4 significant digits unspecified for <1% Udin ±0.15% for 1…3% Udin ±5% for 3…15% Udin Emissions in band 2…9 kHz a single frequency that is multiple of 200 Hz 0.01 V ±0.1% Udin for m.v. < 2% Udin ±5% m.v. for m.v. ≥ 2% Udin 8…150 kHz a single frequency that is multiple of 2 kHz 0.01 V ±(5% 0.1 V) Mounted Power Quality Analyser | PQM-750
