UEM Three Phase kWh Meter

$296.36$609.09 excl. GST
Three-phase kilowatt-hour (kWh) meter for direct connection up to 80A
Fully bi-directional 4-quadrant measurements
Compact 4 DIN module size allows for quick installation
Communications can be via S0 output for energy pulse emission, Modbus-RTU/ASCII, Modbus-TCP, or M-Bus
Local user interface is also available via the LCD display with 8 main digits

See UEM Single Phase kWh Meter (40A) or UEM Single Phase kWh Meter (80A) for single-phase applications.

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Product Description

The UEC and UEM range of four-DIN module kilowatt-hour meters is perfect for three-phase submetering in both commercial and residential applications. Including options for both 3 wire and 4 wire electrical networks. With the option for built-in communications, including RS-485 Modbus RTU/ASCII, Ethernet Modbus-TCP or M-Bus, this meter can be easily networked with third-party systems or devices, including building management systems (BMS), energy management systems (EMS) or industrial PLC control systems.

With options for 80A direct connect or 1/5A current transformer (CT) connect the UEC and UEM kWh meters can be used in a wide range of three-phase power monitoring applications including low power applications of only a few amps, to high power applications up to a few kA.

Besides energy, the meter also measures the main electrical parameters, making them available on the backlit LCD display and via the built-in communications (if available).

A dedicated application for remote management can be provided via the below options:

  • Modbus Master software > for energy meter management by PC via an RS-485 Modbus network.
  • M-Bus Master software > for energy meter management by PC via an M-Bus network.
  • Web server > built-in interface for energy meter management by PC via an Ethernet network. Furthermore, it allows for data recording and manual or automatic data transfer. In the case of automatic transfer, data is sent to a remote server based on a set time schedule.

The meter is built according to EN 50470-1 standard. The active energy is compliant to IEC/EN 62053-21 class 1, but for MID certified device it moreover fulfills class B requirements according to EN 50470-3. The accuracy of reactive energy is compliant to IEC/EN 62053-23 class 2.

The integrated backlit LCD display provides a user interface with clear graphic symbols comprehensible at a glance, along with a metrological LED on the front panel.

These meters are manufactured in Italy to the highest standard of quality and reliability. The analysis of the mean time between failures (MTBF), the accurate selection of components, and the reduction of the internal working temperatures together with strict production and control standards guarantee a product with excellent quality and long-lasting reliability.

Technical Features

Measurements

Accuracy

  • Active energy class B according to EN 50470-3 (MID)
  • Active energy class 1 according to IEC/EN 62053-21 (Non-MID)
  • Reactive energy class 2 according to IEC/EN 62053-23

Voltage & Frequency

  • Nominal values: D) 3×230/400 – 3×240/415 V 50/60 Hz

Current

  • Starting current Ist: 20 mA
  • Minimum current Imin: 250 mA
  • Transitional current Itr: 500 mA
  • Reference current Iref (Ib): 5 A
  • Maximum current Imax: 80 A

Power Supply

  • Power supplied from the voltage circuit
  • Nominal measurement voltage ±20%
  • Max consumption (for each phase):
    • No comms & M-Bus models: 7.5 VA – 0.5 W
    • RS485 Modbus / Ethernet models: 3.5 VA – 1 W
  • Nominal frequency: 50/60 Hz

Communications

S0 Output

  • 2 passive optoisolated
  • Maximum values: 250 VAC-DC – 100 mA
  • Meter constant: 100 imp/kWh
    • The measuring unit (imp/kWh, imp/kvarh, imp/kVAh) changes
      according to the assigned counter (kWh, kvarh, kVAh)
  • Pulse length: 50 ±2ms

RS-485 Modbus-RTU

  • Port: RS-485
  • Protocol: Modbus RTU/ASCII
  • Communication speed: 300 – 57600 bps

Ethernet communication

  • Port: 10/100 Base T
  • Protocol: HTTP, NTP, DHCP, Modbus TCP
  • Communication speed: 10/100 Mbps
  • 8 MB for data recording
  • Integrated webserver

M-Bus

  • Port: wired (EN 1434-3)
  • Protocol: M-Bus
  • Communication speed: 300 – 38400 bps
  • Unit load: 1

Metrological LED

  • Meter constant: 1000 imp/kWh
  • Pulse length: 10 ±2ms

Environmental Ratings

  • Operating temperature: -25°C … +55°C
  • Storage temperature: -40°C … +75°C
  • Humidity: 80% max without condensation
  • Protection degree: IP51 frontal part -IP20 terminals

Downloads

UEM80 Three-Phase kWh Meter

80A Direct Connect
RS485 | MBus | Ethernet
Class 1 Accuracy per IEC 62053-21
Data Sheet

UEM1P5 Three-Phase kWh Meter

1/5A Direct Connect
RS485 | MBus | Ethernet
Class 1 Accuracy per IEC 62053-21
Data Sheet

UEM6C Three-Phase kWh Meter

Algodue UEM6C Kilowatt Hour Meter
1/5A Direct Connect
RS485 | MBus | Ethernet
Class 0.5S Accuracy per IEC 62053-22
Data Sheet

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