EW800 The Distributed Multifunction Meter

The Distributed Multifunction Meter EW800 performs an accurate monitoring of the energy usage and line quality of a three-phase load. It allows the user to collect in a very distributed way all the relevant energy consumption values and the relevant electrical parameters of an industrial plant or machinery line, including the harmonic content up to 51st harmonic.

The data of each single EW800 will then be sent to a Data Manager with either RS485 or 868 MHz Radio interfaces. A network of meters connected to a single Data Manager can count up to 250 devices.

A remote user can get the data from the Data Manager using the embedded web server in a HTML5 compatible format.

Features:

  • Energy meter single- or three-phase
  • Measurement of active, reactive and apparent energy
  • Measurement of active, reactive and apparent power
  • Parameters: current, voltage, power factor
  • Direct measure up to 64 ARMS (EW800A), or connected with CTs (EW800B) or with Rogowski coils (EW800C)
  • Line quality: harmonics (1st…51th), THD.
  • Up to 250 devices connected to a single Data Manager
  • Precision class (active energy): 1%.
  • Communication (options): RS485 ModBus, Radio Sub1Ghz (868MHz)

User Interface:

  • Graphic Display 256×96 pixels, with white LED backlight
  • Intuitive menus using a resistive touch screen interface
  • Data refresh on display: 1 s

ESA Automation offers 3 types of Meter:

  • EW800A3A (DEM) Direct connection up to 64 ARMS
  • EW800B3A (DTM) Connection with CTs
  • EW800C3A (DRM) Connection with Rogowski Coils

EW800A

DEM (Distributed Embedded Meter) with internal shunts for current measurements up to 64A, equipped with integrated touch LCD display available with

  • integrated I/O module with 2 digital inputs and 2 digital outputs
  • serial communication interface RS485
  • radio communication interface RF868 MHZ

Download pdf

 EW800A DEM
ConnectionsSingle-phase
Three-phase 4 wires with Y load
Three-phase 4 wires with D load
Measuring inputs - Current ChannelsDirect
up to 64A (45kW) three-phase connection,
up to 21A (15kW) single-phase connection
Measuring inputs - Voltage ChannelsDirect
(max rated voltage phase-neutral 230Vac)
Power supplyself-powered
CommunicationRS485 ModBus (in all EW800… models)
Radio RF868 MHz (only in EW800…200 models)
Ethernet (only in EW800…300 models)
Digital Isolated Input/Output2 I/O module option (configurable by Data Manager)
THD
MeasuresVoltage (phase-neutral and phase-phase)
Current (phase values and neutral value)
Imported Active Energy (phase values and total value)
Exported Active Energy (phase values and total value)
Imported Active Power (phase values and total value)
Exported Active Power (phase values and total value)
Reactive Power with sign (phase values and total value)
Apparent Power (phase values and total value)
Power Factor (phase values and total value)
Frequency
Harmonic analysisTHD (in voltage / current signal) Harmonics 1st ...51st (in voltage / current signal)
Accuracy - Active Energy
(according to IED 62053-21)
Class 1
Accuracy - Reactive Energy
(according to IED 62053-23)
Class 2
Accuracy - Current and Voltage≤ 0,5%
DisplayLCD (256 x 96 pixel) and resistive touch screen
Case - MountingDIN rail
Case - No. DIN modules7
Case - External dimensions
(mm)
126 x 100 x 70

EW800B

DTM (Distributed External CTs Meter) with external CTs for current measurements, equipped with integrated touch LCD display and available with

  • integrated I/O module with 2digital inputs and 2 digital outputs
  • serial communication interface RS485
  • radio communication interface RF868 MHZ

Download pdf

 EW800B DTM
ConnectionsSingle-phase
Two-phase
Three-phase with neutral
Three-phase without neutral
Measuring inputs - Current Channelswith external Current
Transformers
Measuring inputs - Voltage ChannelsDirect
(max rated voltage phase-neutral 230Vac) or
with external Voltage Transformer
(rated secondary voltage 100-115Vac, for LV or MV application)
Power supply100÷230Vac
CommunicationRS485 ModBus (in all EW800… models)
Radio RF868 MHz (only in EW800…200 models)
Ethernet (only in EW800…300 models)
Digital Isolated Input/OutputVoltage (phase-neutral and phase-phase)
Current (phase values and neutral value)
Imported Active Energy (phase values and total value)
Exported Active Energy (phase values and total value)
Imported Active Power (phase values and total value)
Exported Active Power (phase values and total value)
Reactive Power with sign (phase values and total value)
Apparent Power (phase values and total value)
Power Factor (phase values and total value)
Frequency
Harmonic analysisTHD (in voltage / current signal) Harmonics 1st ...51st (in voltage / current signal)
Accuracy - Active Energy
(according to IED 62053-21)
Class 1
Accuracy - Reactive Energy
(according to IED 62053-23)
Class 2
Accuracy - Current and Voltage≤ 0,5%
DisplayLCD (256 x 96 pixel) and resistive touch screen
Case - MountingDIN rail
Case - No. DIN modules5
Case - External dimensions
(mm)
90 x 96 x 70

EW800C

DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements, equipped with integrated touch LCD display and available with

  • integrated I/O module with 2digital inputs and 2 digital outputs
  • serial communication interface RS485
  • radio communication interface RF868 MHZ

Download pdf

 EW800C DRM
ConnectionsSingle-phase
Two-phase
Three-phase with neutral
Three-phase without neutral
Measuring inputs - Current Channelswith external Rogowski coils
Measuring inputs - Voltage ChannelsDirect
(max rated voltage phase-neutral 230Vac) or
with external Voltage Transformer
(rated secondary voltage 100-115Vac, for LV or MV application)
Power supply100÷230Vac
CommunicationRS485 ModBus (in all EW800… models)
Radio RF868 MHz (only in EW800…200 models)
Ethernet (only in EW800…300 models)
Digital Isolated Input/Output2 I/O module option (configurable by Data Manager)
MeasuresVoltage (phase-neutral and phase-phase)
Current (phase values and neutral value)
Imported Active Energy (phase values and total value)
Exported Active Energy (phase values and total value)
Imported Active Power (phase values and total value)
Exported Active Power (phase values and total value)
Reactive Power with sign (phase values and total value)
Apparent Power (phase values and total value)
Power Factor (phase values and total value)
Frequency
Harmonic analysisTHD (in voltage / current signal) Harmonics 1st ...51st (in voltage / current signal)
Accuracy - Active Energy
(according to IED 62053-21)
Class 1
Accuracy - Reactive Energy
(according to IED 62053-23)
Class 2
Accuracy - Current and Voltage≤ 0,5%
DisplayLCD (256 x 96 pixel) and resistive touch screen
Casec -MountingDIN rail
Case - No. DIN modules5
Case - External dimensions
(mm)
90 x 96 x 70

ORDER CODES

CODESDESCRIPTION
EW800A
EW800A3A100DEM (Distributed Embedded Meter) with internal shunts for current measurements up to 64A - integrated touch LCD display - serial communication interface RS485
EW800A3A122DEM (Distributed Embedded Meter) with internal shunts for current measurements up to 64A - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - serial communication interface RS485
EW800A3A200DEM (Distributed Embedded Meter) with internal shunts for current measurements up to 64A - integrated touch LCD display - radio communication interface RF868 MHZ
EW800A3A222DEM (Distributed Embedded Meter) with internal shunts for current measurements up to 64A - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - radio communication interface RF868 MHZ
EW800B
EW800B3A100DTM (Network External TA Meter) with external TA for current measurements - integrated touch LCD display - serial communication interface RS485
EW800B3A122DTM (Distributed External TA Meter) with external TA for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - serial communication interface RS485
EW800B3A200DTM (Distributed External TA Meter) with external TA for current measurements - integrated touch LCD display - radio communication interface RF868 MHZ
EW800B3A222DTM (Distributed External TA Meter) with external TA for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - radio communication interface RF868 MHZ
EW800B3A300DTM (Distributed External TA Meter) with external TA for current measurements - integrated touch LCD display - Modbus TCP/IP LAN interface
EW800B3A322DTM (Distributed External TA Meter) with external TA for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - Modbus TCP/IP LAN interface
EW800C
EW800C3A100DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated touch LCD display - serial communication interface RS485
EW800C3A122DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - serial communication interface RS485
EW800C3A200DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated touch LCD display - radio communication interface RF868 MHZ
EW800C3A222DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - radio communication interface RF868 MHZ
EW800C3A300DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated touch LCD display - Modbus TCP/IP LAN interface
EW800C3A322DRM (Distributed External Rogowski Meter) with external Rogowski coils for current measurements - integrated I/O module with 2 digital inputs and 2 digital outputs - integrated touch LCD display - Modbus TCP/IP LAN interface

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