Harmonics and interharmonics are caused by modern electronic power conditioning modules. Such, mostly non-linear, modules to control loads and to reduce power consumption is the source of voltage at unwanted frequencies superposed on the supply voltage.
Voltage fluctuations caused by varying load currents may influence the luminance or the spectral distribution of lighting systems. The impression of the unsteadiness of visual sensation induced by this light stimulus is called flicker. The DPA500N harmonics and flicker analyzer is used for single phase applications.
Features:
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Real-time data acquisition
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Internal hard disk for data storage
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16-Bit A/D converter
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Wide-range current input
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Wide-range voltage input
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Built-in lumped flicker impedance
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High-sophisticated analyzing capability
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USB interface for control and data transfer
Applications:
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Industry
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Medical
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Broadcast
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Residential
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Telecom
Specifications:
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MEASURING SYSTEM |
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Input channels |
2 (1x current & 1x voltage) |
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Frequency range |
15Hz - 3,000Hz |
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A/D converter |
16 Bit |
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Controller |
Embedded processor Pentium 200MHz |
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Signal processor |
Motorola DSP |
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Memory |
Internal hard disk |
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Category |
Class I as per IEC/EN 61000-4-7 |
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VOLTAGE INPUT |
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Input range |
10V - 530V rms |
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Overload |
4,000V peak |
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Accuracy |
Better than 0.4% of reading |
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CURRENT INPUT |
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Input range internal |
16A continuous, 50A short time |
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Accuracy internal |
Better than 0.4% of reading
Better than 0.05% rel. to 16A |
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Input range external |
Depending on CT model used.
With optionally delivered CT max. 140A |
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Accuracy external CT |
Related to 16A
2 turns better than 0.8%
5 turns better than 0.6% |
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GENERAL DATA |
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Temperature |
0°C - 40°C |
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Rel. humidity |
10% - 90%, non-condensing |
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Power supply |
85V - 255V, 47Hz - 63Hz |
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Power |
Max. 50W |
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Dimension |
19" 3HU: 133mm x 449mm x 500mm |
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Weight |
13kg |
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Insulation |
Input to case 3kV rms |
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Interface |
USB for control and data transfer |
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FLICKER ANALYSIS |
As per IEC/EN 61000-3-3 |
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Design as per |
IEC/EN 61000-4-15 (2003 & 2010)
230V , 50/60 Hz and 120V , 50/60 Hz |
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Flicker impedance (built-in) |
Line: 0.24ohm + j0.15ohm
Neutral: 0.16ohm + j0.10ohm |
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Accuracy Pst and Plt |
Better than 5% |
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Accuracy dmax, dc, dt |
0.15% |
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Flicker data |
Pst and Plt, Vrms, dmax, dc, dt P50%S, P10%S, P3%S, P1%S, P0.1% |
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Maximum values |
Pst, dmax, dc, dt |
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Observation period |
Min. 1min, selectable |