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The PQM4000 (DIN 192x144)  is a high-end power quality analyzer capable of monitoring and recording key power quality parameters.  It provides accurate measurements, with voltage characteristics monitored to Class A specifications. It functions as an event/fault recorder capable of storing a large number of voltage events and disturbances, frequency variations, inrush currents, etc.
Additional PQ data such as flicker, unbalance, harmonics (up to 63rd) and interharmonics can be recorded. Network signaling. Additional voltage and current measurement channels provide the ability to monitor neutral potential and earth leakage current.
The PQM4000 is available for external standard CTs or current clamps with 1 or 5 A output.
The PQM4000 includes different communication ports for user access in different ways.