Power Quality Analyzer

Power Quality Analyzer – Janitza-UMG604



    Increasing energy costs have raised the importance of controlling electrical energy. The UMG 604 can be a first step towards control of energy costs. The accurate and precise collection of energy data and electrical parameters can provide a clear picture of your energy consumption. Analysis of the data will allow development of cost reduction measures and the UMG 604 will record data to track improvements as these are implemented.

    The UMG 604, equipped with a 500 MHz DSP (digital signal processor), is a fast and high performing power analyzer. The continuous scanning of eight channels with 20 KHz per channel enables the collection of all relevant electrical parameters (more than 800 values), minimum and maximum values, the basic power quality values such as harmonics (up to the 40th, each phase with direction recognition) and short term interruptions.

    Even fast transients (> 50µs) can be identified and data saved in the 128MB memory. Using modern communication processes, the data collected can be sent to a central high-performance database which allows for further processing. The UMG 604 can be integrated into an existing building management control system or a PLC controlled environment.
    Optional Peak Demand Management software (Emax) can be used in conjunction with digital I/O’s to control non-essential loads, which provides means to limit and control peak demand charges.


    Modern communication processes through the Ethernet
    affordable, rapid and safe communication

    The costs for installation and communication (e.g. periphery for field buses) often surpass the costs of the equipment. By connecting the equipment to an existing Ethernet system, a fast, optimally priced and reliable communication system can be developed. Additional interfaces allow the integration of power analyzers in PLC systems or in central building management systems. The use of clear standards offers the user a high amount of flexibility.

    Modbus Gateway

    the affordable connection of units without an Ethernet interface
    With the Modbus gateway function, simple Modbus RTU-units can be connected to the Ethernet using the UMG 604. For example, the UMG 604 can be used simultaneously as a gateway for subordinate measurement points or older units which already exist in the installation. Each unit with a Modbus RTU interface, where the data format and function codes match up, can be connected. Data can be labelled and scaled.
    E-mail and homepage inform you wherever you are…

    A common situation: you have just left the building as the first call arrives about problems in production, computer failures or energy breakdown. By using a web browser and an IP address you have direct access to the extremely powerful homepage of the UMG 604. Extensive information is already available to you on the homepage. Online data is available together with historical data and graphs recording events. The homepage can be used to convert the rates into costs and be exported as a CSV-file or to print it. Alternatively, an e-mail can alert you if an overload occurs, if short-term interruptions or voltage sags disrupt your production processes or unexpected harmonics threaten to reduce the lifespan of equipment.
    The application possibilities are numerous.


    Typical areas of application

    • Substitute for analogue and digital power meters
    • Consumption data collection and evaluation (load profiles)
    • Continuous power quality supervision (e.g. as quality control
      at Service Entrance from energy suppliers)
    • Cost center management, assignment of energy costs
    • Avoiding costly and even dangerous power peaks
    • Ethernet gateway for sub-meters
    • Remote control and supervision of plants and processes\
    • Protection of electrical systems

    DIN rail mounting (6 modules)

    reduction of installation costs

    Usually panel power meters are installed in the panel front door. Mounting the UMG 604 on a 35mm DIN rail reduces installation and connection costs as neither the panel cut-out nor the wiring on the door are necessary. In order to exploit the functionality of modern power meters, the interconnectivity and central analysis of the data plays an important role, which means that the on-site display is basically used for commissioning and maintenance only.
    The extremely compact UMG 604 is suitable for installation in main and distribution panels or individual machines as well as in installation distribution boards which is particularly of interest for applications in building services engineering, information technology and data centers.

    High-speed Modbus

    The devices of the UMG 604 series can transfer data between the units using the RS485 interface at a speed of up to 921.5 kB/s.

    Residual Current Measurement


    All conductors on the output to be monitored are fed through the current transformer, with the exception of the ground conductor. If the system is operating correctly, the sum of all currents is equal to zero so that no current is induced in the current transformer. In the event that a fault current flows via ground or other channel, the current difference induces a current in the current transformer which is captured by the residual current measurement device.

    UMG 604D

    The UMG 604D monitors the residual currents of pure alternating currents in solidly grounded and high resistance grounded systems, displays the current value and issues a warning if the limit values are exceeded.
    In addition to the operating currents L1-L3, the fourth measurement input for residual current measurement is colored differently (light grey) and is suitable for currents up to 30 mA. A zero sequence current transformer is required for sensing this. (Please contact Omniverter 416-849-2299)

    Extended main features of UMG 604D

    • Measures the increase in residual current
    • Allows for maintenance scheduling
    • Warns if the limit values are exceeded
    • Detects slowly developing fault currents
    • Detects weaknesses in the electrical system
    • Residual current monitoring device

Complete Technical Specifications