Power quality analyser

The Janitza, DIN-rail mounting, UMG 511 power quality analyser can provide continuous monitoring and analysis of single- and three-phase, three- and four-wire networks in accordance with EN 50160.

It can be used as a form of protective relay as well as an ethernet gateway in hierarchical analysis and control networks and measures four voltages and four currents to provide complete information for 4-wire three-phase systems including neutral conductor parameters.

The analyser measures transients (from 50 µs), flicker, voltage unbalance, event detection and harmonics from the first to the 63rd harmonic for voltage and current as well as interharmonics.

Additionally, three-phase parameters are analysed in positive, negative and zero phasor sequence. The display methods include phasor diagrams in terms of symmetrical components, waveforms for voltage and current, harmonic bar graph display, RMS trend values over time and numerical values.

The instrument has 256 MB of flash memory for events and transients, five digital outputs and eight digital inputs as well as an embedded webserver interface.

Additionally, RS 485/fast ethernet 10/100Base-TX and Profibus DP V0, Modbus RTU, Modbus TCP as well as Modbus gateway are provided.