Monitoring with Energy Measurement System

AMAXX® with Energy Measurement System



Metric screw fitting M 40


3-phase energy measurement device


Input terminals 25 mm²


Output terminals 25 mm²


Transformer 100/5 A


RJ45 data module for connecting the 3-phase energy measuring device to an incoming network cable


  • Total energy measurement of one or more consumers
  • Installation of the enclosure in an existing fixed installation
  • Integration of the energy measuring system into a network via LAN
  • Data access via LAN, WLAN or App (Android/iOS)
  • Continuous energy measurement of consumers

Application example: Energy management system and energy

AMAXX® receptacle combination in protection type IP 67


3 AMAXX® enclosures for energy measurement


3 AMAXX® receptacle combinations in protection type IP 67


Alternative combination options:

  • Direct connection of machines or systems
  • Connection of existing energy distribution systems

Energy Monitoring

With the energy measuring system, MENNEKES facilitates solutions for the collection of energy data from machines, equipment or energy distribution systems in the business enterprise. Measurement can be performed continuously or temporarily using stationary or mobile devices. In addition to the visualization of real time data, the information already stored in the 3-phase energy measuring device can also be accessed.


Electricity is becoming more expensive. One solution is energy saving.

Energy Efficiency Directive (EED)
Energy Services Act (EDL-G)

With the Energy Efficiency Directive (EED), the European Union is shouldering its responsibility for the better management of global energy consumption.

The aim is to achieve an average energy saving of 20% by 2020. This will only be achieved if each EU member state is held accountable.

In March 2015, the Federal Council approved the draft law to implement the Energy Efficiency Directive. The Energy Services Act sets out, among other aspects, which companies are required to carry out regular energy audits. The implementation of an energy audit according to IEC 16247 must be carried out by December 5, 2015. If a company chooses the option of certification to ISO 50001 the initial audit must be carried out by 31 December 2016.

3-phase energy measurement device

The MENNEKES 3-phase energy measuring device allows the measurement and monitoring of energy consumption by your plant and equipment. The measured values are made available over LAN or WLAN and can be visualised in an app (smartphone, tablet) or web interface.

The 3-phase energy measurement device includes an internal measured value memory (4 GB) that stores the measurement data for a long period and thus provides power consumption statistics, because energy monitoring in the production process is also increasingly more important. The keyword here again is Industry 4.0 and specifically the Smart Factory.

Performance characteristics:

  • Connection
    - Operating voltage 230 V ± 10 %
    - Rated voltage 230 V / 400 V ~
    - Maximum current/phase 32 A, use of transformers for rated currents (e.g. 100/5 A, 150/5 A to 600 A)
    - Frequency 50 Hz ± 5 %
  • Measured variables
    - Active / reactive / apparent power, power factor cos (phi)
    - Current, voltage, network frequency
  • Transmission of measured data
    - Modbus-TCP
  • Accuracy of measurement
    - ± 1 % of full scale
  • Temperature range
    - TA = -25 °C bis +45 °C
    - TL = -25 °C bis +70 °C
  • Visualization
    - PC (web interface)
    - Smart phone (app)
    - Tablet (app)
  • Communication interfaces
    - LAN
    - WLAN
    - RS485
  • Other components
    - Sensor bar (individual consumer measurement/individual circuit measurement)
    - Transformer
  • Meter
    - Measuring instrument and data logger combined in a single device
  • Software
    - Software integrated into 3-phase energy measurement device (free of charge)
    - Open interface for integration of several 3-phase energy measuring devices in various central software solutions (consider additional costs) via Modbus TCP or CSV-Export via FTP


Visualization takes place via the integrated software wirelessly via app on a tablet or smartphone (Android / iOS), and wirelessly or wired via web interface.

The 3-phase energy measurement device has an internal web server. If this is called up via LAN or WLAN, the user receives an overview of the current energy consumption and the amount of the resulting costs. Using the corresponding buttons, the displayed real-time values can also be converted to day, week, month or year values.

The real-time values, both for the total consumption as well as for individual consumers / circuits, can be displayed in the form of a graph. The prerequisite for the visualization of individual variables is the installation of the current sensors and the sensor bar. Individual current values can be defined in the curve progression, quickly and easily, by positioning the mouse pointer in the appropriate place.

In addition to the current data, the information already stored can be accessed via the statistics button. The total consumption or the individual values of the past days, weeks, months or the last year can be visualized in the form of pie charts, column charts, or bar charts.


From a variety of real-time as well as historical data, patterns or trends can be identified and appropriate adjustments made. Energy monitoring is the basis for decision-making. In condition monitoring, i.e. monitoring the condition of machines and equipment, defects, malfunctions and other deviations from normal operation can be quickly identifi ed and rectified. Another field of use of the recorded energy data can be Predictive Maintenance. Upward current changes, for example, may be signs of increased wear.



Data export

Data export can be performed manually or automatically with an adjustable time interval. By selecting the automatic data export, the data can be sent as an export file (CSV format) either to an email address or to an FTP server. Setting a time interval defines when new export files are to be generated in the measuring device and sent back to the destination address. This allows continuous documentation.

The automatic data export offers the advantage that measured energy consumption at other company locations can also be easily processed and stored at a central location in the company.


Central software

The data generated and stored in each 3-phase energy measuring device can only be read out or exported individually, i.e. device by device. If several measuring devices are to be monitored simultaneously, additional, central software is required. The data of each individual measuring device is transmitted to the central software via the installed Modbus TCP protocol over a LAN connection.

The central software is necessary for the implementation of an energy management system (EMS) in accordance with DIN EN ISO 50001 in the company. In the software, the consumption values and costs determined in the individual 3-phase energy measurement devices can be directly allocated to different cost centers and documented. A prerequisite for the transfer of the data is that the central software recognizes the Modbus TCP protocol.

Possible features of a central software solution:
Integration of several installed 3-phase energy measuring devices. Visualization of the measured values (single phase and total values) of several installed EM devices. Allocation of (individual) consumers to individual cost centers. Preparation of monthly and annual forecasts.

The central software is not included in the scope of supply for the MENNEKES products with energy measurement and must be purchased additionally from the providers of these products (see below for a list of eligible energy management software, for use as software in an energy management system according to DIN EN ISO 50001). Additional investment costs must be considered and calculated. Requirement of the software product to integrate the above-mentioned 3-phase energy  measurement devices: Data exchange via Modbus TCP or import of the CSV files that the EM device automatically provides at freely configurable time intervals.


List of eligible energy management software
Published on the website of the BAFA (Federal Ministry of Economics and Export Control)