Power analyzer technical specifications

Power analysis specifications

FunctionalityDewesoft Power Analyzer
Power Analysis for DC and AC
Power Analysis PP, Q, S, PF, cos phi, D (Distortion), DH (Harmonic distortion), QH (reactive power of harmonics) (for each phase and total)
Fundamental PowerP_H1, Q_H1, S_H1, cos phi_H1, phi_H1 (for each phase and total)
Voltage and CurrentRMS, RM (star and delta)
Energy CalculationTotal, positive and negative (e.g. Recuperation)
Wiring SchematicsDC, 1-phase, 2-phase, 3-phase delta, 3-phase star, 3-phase V, 3-phase Aron, 3-phase two meters, 6-phase (R2, R4, R8), 7-phase (R2, R4, R8, 12-phase (R4, R8))
Star-Delta Calculation✓ (waveform and RMS values)
Frequencies16.7 Hz, 25 Hz, 50 Hz, 60 Hz, 400 Hz, 800 Hz, Variable from 10 Hz up to 3 kHz
Frequency SourceVoltage, current, external
Period ValuesU, I, P, Q, S, symmetrical components for 1⁄2, 1, 2 or 4 periods and selectable Overlap up to 99 %
Power AveragingSelectable - starting from 1 ms , Multiple Averaging (e.g. 20 ms, 60 s, 600 s) possible

Power quality analysis specifications

FunctionalityDewesoft Power Analyzer
Harmonics (according to IEC61000-4-7)up to 150 kHz for voltage, current, active-, reactive power, phase angle and impedance
Variable Sidebands and Half Sidebands (according to IEC61000-4-7)
Harmonic Smoothing Filter (according to IEC61000-4-7)
Interharmonics (according to IEC61000-4-7)
Total Harmonic Distortion (THD) (according to IEC61000-4-7) Voltage and current (Total, odd and even) - selectable up to 150 kHz
Total Interharmonic Distortion (TIHD) and K-factor (according to IEC61000-4-7)Voltage and current (Total, odd and even) - selectable up to 150 kHz
Higher Frequencies (according to IEC61000-4-7) up to 150 kHz (grouping in 200 Hz and 2 kHz bands)
Flicker (according to IEC61000-4-15)selectable PST and PLT
Flicker Emission (according to IEC61400-21)
Rapid Voltage Changes (according to IEC61000-4-15)selectable steady state and hysteresis
Symmetrical Components (according to IEC61000-4-30)Zero-, positive- & negative system for voltage and current (absolute or relative to fundamental)
Additional Symmetrical Components (according to IEC61400-21) Active and reactive parts for zero-, positive- & negative system

Software specifications

FunctionalityDewesoft Power Analyzer
Power Analysis
Power Quality Analysis
Database Storing
Post Processing
Math Library
Data logging - Raw data storing✓ (data Storing at Full Sampling rate up to 15 MS/s per channel)
Scope✓ (up to 8 graphs in one diagram, Zoom In- and Out)
Vector Scope✓ (1-, 2-, 3-phase systems, Clarke transform, Park transform)
FFT ✓ (up to 1⁄2 of Sampling Rate)
Harmonic FFT✓ (up to 1⁄4 of Sampling Rate)
Transient Recording✓ (up to 15 MS/s)
Triggering ChannelsAnalog, Digital, Counter, Math, Power, etc.
Triggering optionsSimple edge (rising, falling), Window (two-levels: entering, leaving), Pulsewidth (longer or shorter than duration), Window and Pulsewidth, Slope Trigger (rising or falling slope with steepness)
Functionality Motor Efficiency Analysis (available as an upgrade)
Dewesoft Power Analyzer✓ (efficiency mapping)

Frequency accuracy

Line frequencyAccuracy
16.67 ... 60 Hz0.0005 % of reading
400 Hz0.01 % of reading
800 Hz0.02 % of reading
Variable0.05 % of reading
Condition: SR > 50 * fin
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