EMTEST-3-Phase Digital Power Analyzer for harmonics & flicker testing (Model: DPA 503N)

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Highlights

  • 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

Application

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.

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.

Resource & Download

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