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Power Quality Analyzer

Cutting Edge Power Quality Analyzer & Fault Recorder

The EM920 is among the most advanced power quality analyzer and recorder on the market. The instrument is a product of SATEC’s 20 years of experience in the creation of power quality instruments. The EM920 is designed to fully comply with the most demanding industry standard, IEC 61000-4-30 Class A. It provides power quality reports and statistics according to EN 50160, complimented by comprehensive power quality event/

data log with waveforms (3 voltage and 4 current inputs for waveform recording) available for detailed Power Quality event analysis. The individual harmonics and inter-harmonics are analyzed according to IEC 61000-4-7. The instrument also supports directional power harmonics analysis. The flicker is measured and analyzed according to IEC 61000-4-15.

Power quality analysis and reading

Sags/swells (dips/overvoltages), interruptions, frequency variations

  • Flicker, voltage unbalance, harmonic and interharmonic

voltages with high resolution

  • Programmable thresholds and hysteresis

Built-in EN 50160 power quality statistics & reports

Auxiliary power supply for recording major dips & interruptions

Harmonics & Inter-harmonics according to IEC 61000-4-7

Directional power harmonics and power factor phasors

Voltage and current THD components

  • Harmonic energies to determine quality of power received or

delivered

  • Symmetrical components

  • Flicker measurement according to IEC 61000-4-15

  • Waveform recording

  • Selectable sampling rate up to 1024 samples/cycle

  • Settable up to 20 cycles of pre-fault and any length of post fault cycles

  • Power quality event recorder as per EN 50160.

  • Event recorder for logging internal diagnostic events, control

events and I/O operations

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