Power quality

  • Harmonics analysis up to the 63rd harmonic, even / odd (U, I, P, Q)
  • Interharmonics (U, I)
  • Distortion factorTHD-U / THD-I / TDD
  • Measurement of positive, negative and zero sequence component
  • Unbalance
  • Direction of rotation field
  • Voltage crest factor
  • Flicker measurement in accordance with DIN EN 61000-4-15
  • Logging and storage of transients (> 50 μs)
  • Short-term interruptions (> 20 ms)
  • Monitoring start-up processes

High quality measurement

  • Constant true RMS measurement
  • Measurement process in accordance with IEC 61000-4-30
  • Certified accuracy of measurement according to class A
  • Continuous sampling of the voltage and current measurement inputs at 20,000 Hz
  • 400 measurement points per period
  • Recording of over 2,000 measured values per measurement cycle
  • Accuracy of active energy measurement: Class 0.2
  • Fast measurement even enables the logging of rapid transients from 50 μs
  • Logging of currents and voltages (15 – 440 Hz)
Fig.: UMG 511 Class A-certified
Fig.: UMG 511 Class A-certified

User-friendly, colour graphical display with intuitive user guidance

  • High resolution colour graphical display 320 x 240, 256 colours, 6 buttons
  • User-friendly, self-explanatory and intuitive operation
  • Backlight for optimum reading, even in darker environments
  • Illustration of measured values in numeric form, as a bar graph or line graph
  • Waveform representation of current and voltage
  • Clear and informative representation of online graphs and power quality events
  • Multilingual: German, English, Russian, Spanish, Chinese, French, Japanese, Turkish ...

Various characteristics

  • 4 voltage and 4 current measurement inputs, i.e. logging of N and / or PE possible
  • 8 digital inputs, e.g. as data logger for S0 meter
  • 5 digital outputs for alarm message or e.g. for connection to a BMS or PLC
  • Free name assignment for the digital IOs, e.g. if used as data logger


Fig.: Transients list
Fig.: Transients list
Fig.: Graphical representation of a transient
Fig.: Graphical representation of a transient

Modern communications architecture via Ethernet

  • Simple integration in an Ethernet network
  • Reliable and cost-optimised establishment of communication
  • Ideal for Master-Slave structures
  • High flexibility due to the use of open standard
  • Integration in PLC systems and BMS through additional interfaces
  • Various IP protocols: SNMP, ICMP (Ping), NTP, FTP ...

Measuring device homepage

  • Web server on the measuring device, i.e. device's inbuilt homepage
  • Function expansion possible through APPs
  • Remote operation of the device display via the homepage
  • Comprehensive measurement data incl. PQ (transients, events...)
  • Online and historic data available directly via the homepage
  • Waveform representation of current and voltage
Fig.: Illustration of the historic data via the homepage
Fig.: Illustration of the historic data via the homepage

BACnet protocol for building communication

  • Optimal interoperability between devices from various manufacturers
  • Predefined BIBBs (BACnet Interoperability Building Block)
  • BACnet is optionally available with UMG 511
  • UMG 511 supports the device type B-SA with the BIBBs DS-RP-B and DS-WP-B
  • DS-RP-B und DS-WP-B
  • Furthermore, the BIBBs DS-COV-B and DM-UTC-B are also supported
Fig.: BACnet topology
Fig.: BACnet topology

Programming / PLC functionality

  • Further processing of the measurement data in the measuring device (local intelligence)
  • Monitoring and alarm functions simple to program
  • Sustainable functional expansions far beyond pure measurement
  • Comprehensive programming options with
    • Jasic® source code programming
    • Graphical programming
  • Complete APPs from the Janitza library

Large measurement data memory

  • 256 MB data memory
  • Memory range up to 2 years (configuration-dependent)
  • Individually configurable recordings
  • Recording averaging times can be freely selected
  • PQ recordings template preconfigured for conventional standards (e.g. EN 50160)
  • User-defined memory segmenting possible
Fig.: Large measurement data memory
Fig.: Large measurement data memory

Powerful alarm management

  • Information available immediately by email
  • Inform maintenance personnel via the powerful device homepage
  • Via digital outputs, Modbus addresses, GridVis® software
  • Programming via Jasic® or graphical programming
  • Further alarm management functions via GridVis®-Service alarm management
Fig.: GridVis® alarm management, alarm list (logbook)
Fig.: GridVis® alarm management, alarm list (logbook)

Peak load representation and peak load management

  • Illustration of the 3 highest monthly power peaks on the LCD display (P, Q, S)
  • Rolling bar chart representation of the peak power values over 3 years on the LCD display (P, Q, S)
  • Plain text representation on the LCD display (P)
  • Emax control of up to 64 channels (optional)

GridVis®-Basic power quality analysis software

  • Multilingual
  • Manual read-out of the measuring devices
  • Manual report generation (power quality and energy consumption reports)
  • Comprehensive PQ analysis with individual graphs
    • Online graphs
    • Historic graphs
    • Graph sets
  • Integrated databases (Janitza DB, Derby DB)
  • Graphical programming
  • Topology views
  • High memory range

Certified quality through independent institutes

  • ISO 9001
  • Energy management certified according to ISO 50001
  • Class A certificate (IEC 61000-4-30)
  • UL certificate
  • EMC-tested product
Fig.: GridVis® load profile, basic instrument for EnMS
Fig.: GridVis® load profile, basic instrument for EnMS