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3-Phase Digital Power Analyzer for harmonics & flicker testing
DPA 503N - Full-compliant 3-phase harmonics and flicker analyzer
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 luminance or spectral distribution of lighting systems. The impression of unsteadies of visual sensation induced by this light stimulus is called flicker.
The DPA 503N is used for 3-phase applications but also supports single phase applications.
Real-time data acquisition
Internal hard disk for data storage
16-Bit A/D converter
6 input channels
Wide-range current input up to 140Arms
Wide-range voltage input up to 530Vrms
High-sophisticated analyzing capability
USB interface for control and data transfer
Benefits
The fully compliant harmonics and flicker analyzer
The DPA 503N is a fully compliant analyzer for harmonics and flicker as per the latest IEC/EN 61000-3-2, IEC/EN 61000-3-3 and JIS C 61000-3-2 as well as IEC/EN 61000-3-11 and IEC/EN 61000-3-12:2011 requirements. The DPA 503N has six independent input channels; three for voltage and three for current. It follows the design specifications as per IEC/EN 61000-4-7:2009 (for Class A instruments) for harmonics analyzers and IEC/EN 61000-4-15:2010 for flicker meters.
Based on a real-time kernel and equipped with its own harddisk it allows to record the measuring data continuously without any gaps or overlapping. The rectangular measurement window is synchronised to each group of 10 or 12 cycles of the mains supply frequency (50Hz or 60Hz) by means of a digital PLL (Phase Lock Loop). A wide-range current input (up to 140A) avoids loss of measured data due to range switching that would occur when using different shunt resistors.
The classification of the measurement can be selected at any time, before or after the measurement has been performed. During all measurements the AC supply voltage is measured simultaneously with the current.
Software
dpa.control - The Control and Analysing Software for Harmonics and Flicker
dpa.control is the software tool needed for the operation of the harmonics and flicker analysing system. It offers all features to control the DPA 503N, to upload the recorded measuring data and for classification and analysis. It includes analysis as per the latest standards. An easy Fail/Pass function allows fast analysis while detailed data is available for extended analysis and EUT evaluation purposes.
The dpa.control offers a powerful documentation capability with direct export to Word.
Auxiliary Devices
ACS 503Nx - Three-phase AC voltage source up to 90kVA
The ACS 503Nx three-phase AC voltage source is used to provide a pure AC supply voltage for harmonics and flicker analysis as recommended by IEC/EN 61000-3-2, IEC/EN 61000-3-3, JIS C 61000-3-2 as well as IEC/EN 61000-3-11 and IEC/EN 61000-3-12:2011. It offers a rated power of up to 90kVA. The output voltage ranges up to 3x530V with a nominal current up to 75A (peak current capability of up to 550A per phase).
The ACS 503Nx AC voltage source is controlled by dpa.control.
AIF 503Nx Reference Impedance as per IEC/EN 61000-3-3/-3-11
This reference impedance specified by IEC/EC 61000-3-11. is used for flicker measurements on three-phase DUTs up to 75A.
Two different impedance values can be set; Zref (0.24ohm + j0.15ohm; 0.16ohm + j0.10ohm) and Ztest (0.15ohm + j0.15ohm; 0.10ohm + j0.10ohm). For applications up to 16A an AIF 503N16 with only Zref is available.
The AIF 503Nx reference impedance are remote controlled from the DPA 503N.
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