Harmonics and inter-harmonics measurement
Data recording for further EN 50160 analysis
Data recorded in standard PQDIF and CSV file formats
Embedded web server
Communication on Ethernet, RS485 and WIFI
USB host port
PQM4000 is a high-end power quality analyzer, able to monitor and record the major power quality parameters. It provides
an accurate measurement, voltage characteristics are monitored according to Class A specification. At the same time it acts as
event/fault recorder, capable to store a high number of voltage events and disturbances, frequency variations, inrush current, etc.
Additional PQ data can be recorded, such as Flicker, Unbalance, Harmonics and Interharmonics, Mains Signalling. It also provides
standard power measurement data for three-phase systems. Extra voltage and current measurement channels give the possibility to monitor Neutral Potential and Earth Leakage current.
PQM4000 is available for external standard CTs with 1 or 5A output. In this way maximum flexibility is granted even on existing
The powerful recording features give the possibility to capture and record all types of standard and PQ data simultaneously.
All this information can be recorded for long time period due to the high memory capacity, in this way a complete EN 50160
analysis can be performed. Events and disturbances provide also waveform recording together with RMS values. Recordings can be transferred in different ways: user can download them directly through web interface or set an automatic scheduled data upload to a remote server or transfer it to an USB flash drive.
PQM4000 includes different communication ports so the user can access it in different ways. The Ethernet ports on the front
and rear panels allow complete control on the instrument: web access for real-time monitor, device setup, stored data transfer,
maintenance operations. An additional RS485 port gives the possibility to interconnect the device with slower monitoring systems, such as PLC. The integrated GPS receiver provides accurate time information regardless of the location where the meter is installed in a distributed monitoring system.
Moreover, different I/O channels are provided to enhance the instrument features. It is provided with a high resolution TFT display with touch screen which allows a fast and direct instrument management. User-friendly multilingual interface is common to its web server, very useful for on-site instrument operations.
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