EMpro AC and DC energy meters for billing purposes

Energy meters for billing purposes

Energy meters for billing purposes enable cost-center-specific energy data billing. EMpro AC energy meters with MID approval record all important electrical parameters such as currents, voltages, power factors, power ratings, and energy values in all four quadrants. EMpro DC energy meters enable the direct measurement of currents and voltages up to 650 A/1,000 V DC. The measurement data is provided via standard communication interfaces.

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EEM-EM357-EE - Measuring device
EEM-EM357-EE - Measuring device
1311985

This device is a digital three-phase electric energy measuring device, suitable for measuring active power by direct measurement in the power grid not exceeding 480 V / 100 A, with 2 pulse outputs, RS-485 interface, and operating temperature up to +70°C, certified in accordance with the MID directive.

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DC energy meter with calibration approval on a DIN rail

DC energy meters with calibration approval

Designed for charging infrastructure

The extremely compact EMpro DC energy meter enables the space-saving direct measurement of currents and voltages up to 650 A/1,000 V DC. The proven RS-485 interface and calibration approval are ideal for billing purposes in charging infrastructure.

Main features

  • Measurement of up to 650 A/1,000 V DC
  • Accuracy class B (EN 50470-3)
  • Dimensions: 107.2 mm x 116 mm x 67 mm
  • Operating temperature: -40°C … +80°C
  • SLIP interface with OCMF data format
  • Cable-loss compensation
  • In accordance with VDE-AR-E-2418-3-100

Your Advantages

  • DC direct measurement without converter with a space-saving design
  • High reliability with a maximum permissible operating temperature of +80°C
  • Simplified point-to-point protocol with a standardized e-mobility data format
  • Calibration approval for billing purposes
  • Ideal in combination with the CHARX DC charging controller

EMpro energy meters for billing purposes

Comparison of EMpro energy meters for billing purposes

EMpro DC energy meters
EMpro AC energy meters
EMpro DC energy meters

EMpro AC energy meters

Maximum input current Direct measurement up to 650 A DC Direct measurement: 45 A AC (1-phase); 100 A AC (3-phase)
. Current transformer: 1 A / 5 A AC (3-phase)
Input voltage range 1,000 V DC 1-phase: 1 x 184 V ... 276 V
. 3-phase: 3 x 173 V ... 480 V (Ph/Ph) / 100 V ... 276 V (Ph/N)
Communication protocol SLIP (Serial Line Internet Protocol) Modbus/TCP
. Modbus/RTU

EMpro DC energy meters for billing purposes


EMpro DC energy meters with calibration-law approval

The space-saving EMpro DC energy meters enable direct measurement of currents and voltages up to 650 A/1,000 V DC for billing purposes. The tamper-proof design with data in OCMF format and the calibration log are ideal for use in charging infrastructure.

Your advantages

  • Space-saving, accurate DC direct measurement up to 650 kW
  • Ideal for billing purposes due to tamper-proof electromechanics and firmware
  • High reliability with an extended temperature range from -40 to +80°C
  • Effortless integration due to simplified point-to-point protocol with standardized data communication
  • Ideal for e-mobility charging processes with the OCMF data format, calibration log, and interaction with the CHARX DC charging controller

EMpro DC energy meters – your advantages in detail

EMpro DC energy meter with icons for DC measurement up to 650 kW and accuracy classes
EMpro DC energy meter with icons for billing purposes and encryption
EMpro DC energy meter with icon for operating temperature range
EMpro DC energy meter with icons for RJ12 and SLIP protocol
Topology of a DC charging process
EMpro DC energy meter with icons for DC measurement up to 650 kW and accuracy classes

EMpro DC energy meters measure powers up to 200 kW in accordance with accuracy class C (EN 50470-4) and up to 650 kW in accordance with accuracy class B (EN 50470-3).
Measurement is performed directly via a shunt, and is also bidirectional depending on the version. The compact dimensions save valuable space in your application.

EMpro DC energy meter with icons for billing purposes and encryption

The EMpro DC energy meters have the corresponding approvals for use in kWh-based billing systems.
The tamper-proof hardware and firmware design provides protection against unauthorized access.
In addition, all events that have an impact on billing are recorded in the calibration log.

EMpro DC energy meter with icon for operating temperature range

EMpro DC energy meters provide high reliability in an extended operating temperature range:
Despite their compact design, the products ensure efficient heat dissipation and are suitable for powers up to 650 kW DC at temperatures up to +80°C.
They can also be used at extremely low temperatures as low as -40°C without any concerns.

EMpro DC energy meter with icons for RJ12 and SLIP protocol

The integrated RS-485 interface with the simplified SLIP protocol (Serial Line Internet Protocol) enables the communication of measurement data to higher-level control systems.
Save cabling effort with the RJ12 connectors which facilitate the connection of several DC energy meters in series due to their versatile design.

Topology of a DC charging process

By storing the energy data, permanent traceability of the charging processes is guaranteed. In addition, all billing-related events, such as adjustment of the cable resistance, are recorded in the calibration log.
Send billing-related data in OCMF format to end devices identified as being secure.
Benefit from integrated network solutions consisting of a CHARX DC charging controller, an EMpro DC meter, and other products from Phoenix Contact.

EMpro AC energy meters for billing purposes


EMpro AC energy meters

EMpro energy meters with MID certification in accordance with EN 50470 enable submetering, i.e., cost center-specific energy data billing.
The measuring devices record the key electrical parameters such as currents, voltages, power factors, powers, and energy values in all four quadrants. This provides you with information on the feed-in and drawing of active and reactive energy.
The data is forwarded to a higher-level control system, such as an energy management system, via conventional communication interfaces.

Your advantages

  • Easy bus and network connection via M-Bus, Modbus/RTU, or Modbus/TCP interface
  • Narrow on the DIN rail with widths of just 17.5 mm or 72 mm
  • Time and cost savings with versions for direct current measuring up to 40 A AC or 80 A AC
  • Remote data access, storage, and export with Ethernet-based devices

EMpro AC energy meters – your advantages in detail

EMpro AC energy meter marketing motif with icons for current transformer input, direct measurement, and temperature range
View of the printing on the side of an EMpro AC energy meter with magnified display
Energy meter with network cable and icons for Modbus/RTU, Modbus/TCP, and S0 interface
EMpro AC energy meter and EMpro multifunctional energy measuring device with icon for the same Modbus register
EMpro AC energy meter with illuminated display
EMpro AC energy meter marketing motif with icons for current transformer input, direct measurement, and temperature range

EMpro AC energy meters support single-phase 2-conductor, three-phase 3-conductor, and three-phase 4-conductor applications and are available as direct measurement or current transformer versions.
Currents up to 100 A AC can be measured directly over the entire temperature range from -40°C to +70°C. The measurement input via current transformer can be configured for 1 A or 5 A current transformers, whereby the transformer ratio can be parameterized.

View of the printing on the side of an EMpro AC energy meter with magnified display

An accurate device that is MID-certified by an external notified body gives you a high degree of certainty.
The European Measuring Instruments Directive 2014/32/EU (MID) distinguishes between accuracy classes A, B, and C in accordance with IEC 62053-21 classes 2, 1, and 0.5.
EMpro AC energy meters satisfy accuracy class C or 0.5 and are suitable for increased requirements in the commercial and industrial sector.

Energy meter with network cable and icons for Modbus/RTU, Modbus/TCP, and S0 interface

When installed, energy meters can be networked with each other via common communication protocols, such as Modbus/RTU or Modbus/TCP, and communicate directly with the energy data management system. This eliminates any time-consuming direct reading on site.
The energy values in all four quadrants are observed for the most part.
Your specific application requirements will determine which protocol is right for you.

EMpro AC energy meter and EMpro multifunctional energy measuring device with icon for the same Modbus register

Different types of measuring devices are used in many applications. Multifunctional energy measuring devices are used for measurement at feed-in, while energy meters with MID approval are used for billing.
When it comes to energy measurement, Phoenix Contact products basically speak the same language, because the Modbus registers of the energy meters are based on the EMpro multifunctional energy measuring devices. This saves programming effort and ultimately additional costs.

EMpro AC energy meter with illuminated display

It must be possible to easily read and export data under the conditions of intended use in accordance with EN 50470-1.
All electrical characteristic values and the configuration parameters available via the display pages are displayed on the backlit LCD display of our EMpro AC energy meters.
Other configuration parameters can be configured via the communication interface.
Four mechanical buttons on the front are used for data control and programming.

Application examples for EMpro energy meters for billing purposes


Interactive image map: Application examples for AC and DC energy meters
Store and draw energy as needed
Surplus electricity, such as from solar power, wind power, etc., is temporarily stored in battery storage systems and can be used as required. A storage container provides a lot of power in a small space and can be quickly charged and discharged thanks to intelligent battery control. Energy meters monitor the charging and discharging processes and distinguish between power supply and consumption.
Charging infrastructure and load management in parking garages
Typically, AC charging powers from 11 to 22 kW and DC charging powers upwards of 50 kW are installed. In semi-public spaces, electric vehicles charge at up to 22 kW AC for longer periods of time. Charging points with over 50 kW DC are offered for shorter charging times. Energy monitoring measures the grid load. The charge controller uses the data for load management to optimally utilize the connected load and prevent overload.
Individual billing in train stations
All energy consumption between both the train station operator and other owners who operate shopping and catering facilities, for example, must be billed in compliance with MID – based on general consumption (lighting, escalators, HVAC applications), individual consumption (bakery, restaurant, snack bar), and based on means of transportation (e.g., electric point heating systems). The measuring devices are typically connected to the energy data management system via a fieldbus interface, which eliminates the need for direct reading on site.
Consumption monitoring in rental apartments
The resident of a house or apartment should be able to read how much energy is being consumed at any time. How much electrical energy does my charging station require? How much energy is otherwise required? Energy meters installed in series, also known as intermediate meters, are permanently installed in the distributor box and record the energy consumption of individual areas.
Energy management of public buildings
Rising energy costs, tight budgets, and climate protection require efficient energy use in public facilities. The variety of buildings and their energy situations make energy management complex. Digitalized energy monitoring with energy meters for billing purposes in accordance with the Measuring Instruments Directive 2014/32/EU, measuring devices, and software provides an ideal solution.
Individual billing in hotels, shops, and restaurants
Buildings are becoming more complex and the hotel operator, guests, and external catering services in house must all be billed separately. The consumption of charging stations in the underground car park must be determined and electricity from your own solar cells must be distinguished. Consumption by external catering services must be taken into account. Energy meters in accordance with MID 2014/32/EU are used for billing in compliance with tax law.
Managing charging processes in e-mobility infrastructure
When expanding the charging infrastructure, AC charging powers from 11 to 22 kW and DC charging powers upwards of 50 kW are installed. Public charging stations require short charging times with high charging powers so that vehicles can continue their journey quickly. Fast charging starts from 50 kW and includes High Power Charging (HPC) starting from 150 kW DC. The energy monitoring system measures the grid load, and the charge controller uses this data for load management to optimally utilize the connected load and prevent overload.
Production machinery in industrial companies
Production is home to small loads, ranging from lighting and motors to large loads such as injection molding machines. Condition monitoring increases energy efficiency and improves the carbon footprint. The energy values in all four quadrants are observed for the most part. In the future, the aim is to use DC grids, as these will enable greater energy efficiency.
Transparency in data centers
Data centers supply IT components without interruption and ensure productivity through redundancy. This involves the use of complex power supply systems, UPS systems, and grid backup systems. Increasing data volumes require high availability right through to cost center management. Energy meters in accordance with the Measuring Instruments Directive 2014/32/EU create transparency and are used for billing-related tasks.
Individual billing at airports
All energy consumption between both the airport operator and various properties such as shops, restaurants, offices, and hotels mut be billed in compliance with MID: from general consumption (lighting, escalators, HVAC applications, luggage processing, taxiway lighting) to individual consumption (restaurants, offices). Billing-related data must be processed quickly and provided via the Ethernet interface.
Intelligent energy monitoring
Products and services for your energy management

Easy energy management: our innovative and coordinated portfolio of sensors and measuring technology can save you a great deal of effort when it comes to energy data acquisition. Future-oriented communication solutions and digital services help you to integrate, manage, and process your data.

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