Power analyzer technical specifications
Power analysis specifications
| Functionality | Dewesoft Power Analyzer |
|---|---|
| Power Analysis for DC and AC | ✓ |
| Power Analysis P | P, Q, S, PF, cos phi, D (Distortion), DH (Harmonic distortion), QH (reactive power of harmonics) (for each phase and total) |
| Fundamental Power | P_H1, Q_H1, S_H1, cos phi_H1, phi_H1 (for each phase and total) |
| Voltage and Current | RMS, RM (star and delta) |
| Energy Calculation | Total, positive and negative (e.g. Recuperation) |
| Efficiency | ✓ |
| Wiring Schematics | DC, 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) |
| Frequencies | 16.7 Hz, 25 Hz, 50 Hz, 60 Hz, 400 Hz, 800 Hz, Variable from 10 Hz up to 3 kHz |
| Frequency Source | Voltage, current, external |
| Period Values | U, I, P, Q, S, symmetrical components for 1⁄2, 1, 2 or 4 periods and selectable Overlap up to 99 % |
| Power Averaging | Selectable - starting from 1 ms , Multiple Averaging (e.g. 20 ms, 60 s, 600 s) possible |
Power quality analysis specifications
| Functionality | Dewesoft 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 |
Power Analyzer Software specifications
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Frequency accuracy
| Line frequency | Accuracy |
|---|---|
| 16.67 ... 60 Hz | 0.0005 % of reading |
| 400 Hz | 0.01 % of reading |
| 800 Hz | 0.02 % of reading |
| Variable | 0.05 % of reading |
| Condition: SR > 50 * fin | |