User Manual

Device description
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2 Device description
The EMpro energy measuring devices (EEM-MA..., EEM-MB... types) are universally
deployable, high-precision, network-compatible measuring devices, with or without LC
display, that can measure, evaluate and process voltages and currents in one, two and
three-phase power supply systems. For voltage measurements, up to four inputs are
available; for current measurements, up to three inputs are available. You can use EMpro
energy measuring devices in TN and IT systems.
Typical installation locations of EMpro energy measuring devices are:
– Switchgear and controlgear assemblies, switchgear and controlgear assembly
systems
– Control cabinets
To enable versatile use, EMpro energy measuring devices are available for the following
installation methods:
– For front panel installation or with DIN rail adapter, with LC display, with control buttons
(included in the EMpro product family, but not described in this user manual)
– For mounting on a DIN rail, with LC display, with control buttons
– For mounting on a DIN rail, with LC display, with control buttons, without LC display,
without control buttons
Your advantages:
– Precise knowledge of load profiles allows load management, optimization of the
electrical energy usage and optimization of energy consumption from the public supply
network and own production (e.g., CHP, PV system).
– Meaningful load profiles are an important aid for planning system expansions and
building new systems.
– Energy costs can be assigned to individual functional divisions or cost centers.
– A transparent overview of the energy flows increases the awareness of energy
consumption, uncovers waste of energy and makes it possible to identify system
components and equipment that harbor potential energy savings.
– Critical system states can be detected, reported and registered. Such critical system
states can, e.g., be caused by overload, unbalanced load, undervoltage, voltage and
current distortion by non-linear consumers, etc. Detection of critical system states
makes it possible to quickly react to such states in order to prevent potential decreases
in availability or energy supply failures. When critical system states are detected in time,
measures can be taken to ensure permanent system availability.
– Seamless communication with control systems via Modbus/RTU, Modbus/TCP,
PROFINET and EtherNet/IP™ and with higher-level energy management systems via
standard TCP/IP networks (Ethernet, RJ45)
– Intuitive configuration and operation of EMpro energy measuring devices with four front
buttons or integrated web server
Numerous parameters that are important for operating an electrical system are determined
by means of the voltages and currents measured by the EMpro energy measuring devices.
Apparent power, active power and reactive power are measured in all four quadrants
(consumption, supply).