The PQM4000 class A power quality meter is a ‘high-end’ power monitoring device, able to monitor and record power quality parameters in AC power networks. It provides highly accurate measurement of voltage, current and power characteristics according to Class A specification.
Whilst the PQM4000 provides standard power measurement data for three-phase systems, the device also acts as an event and fault recorder/logger, capable of storing a high number of voltage events and disturbances, frequency variations, inrush currents, etc. Additional power quality data can be recorded, such as flicker, phase imbalance, harmonics and interharmonics and mains signalling. Furthermore, extra voltage and current measurement channels provide the capability to monitor neutral potential and earth leakage current.
The powerful recording features of the PQM4000 provide the ability to capture and record all types of standard and power quality data simultaneously. All this information can be locally recorded for an extensive time period due to the high 16 gigabyte memory capacity. This allows for a complete EN 50160 analysis to be performed on logged data. Events and disturbances also provide waveform recording together with RMS values. Recordings can be transferred in different ways. Users can download them directly through the web interface or set a scheduled automatic data upload to a remote server.
The PQM4000 includes several different communication ports so that users can access the device and internal data in different ways:
Moreover, different I/O channels are provided to enhance the instrument features. A user-friendly multilingual interface is provided for the web server which simplifies the access to instrument operations.
PQM4000 is available in 2 models. One for external standard CTs with 1 or 5A output and another for current clamps with 1 or 3V output. In this way maximum flexibility is granted even on existing systems.