HW group PWR 3/12/25

HWg-PWR is a smart Ethernet gateway for remote energy metering and consumption monitoring. To measure the consumption of water, electricity and other energies, external meters with the M-Bus interface are used. Up to 3 / 12 / 25 M-Bus meters can be connected to the HWg-PWR unit. Individual meters (electricity meter, water meter, gas meter, heat meter etc.) are produced by third parties and connected via their M-Bus interface. HWg-PWR is a smart gateway that monitors energy consumption and warns about abnormal values The unit provides a Web interface, charts, SNMP and Modbus/TCP output, data logging, e-mail and SMS alerts, and much more.

HWg-PWR 3/12/25 monitors energy consumption using standard external energy meters produced by well-known manufacturers. It is possible to mix electricity meters, water meters, gas meters etc. by different manufacturers. Depending on version, HWg-PWR supports 3, 12 or 25 external meters with the M-Bus interface (EN 13757).

HWg-PWR 3 / 12 / 25 – Energy monitoring gateway:

• Sends an alarm in the event of failure or value out of a specified range (E-mail, SNMP Trap, SMS)
• Logs selected values (displays graphs over the WEB interface)
• 8x Digital Inputs for detecting single-phase 110/230VAC outage
• Converts the consumption (e.g. from [kWh] to [€]) without a computer or additional software
• Periodically sends an energy consumption report for the given period as an e-mail attachment
• Actively uploads data to a “portal” using the HWg-Push protocol

Advantages of using third-party M-Bus meters

• Vast range of meters with the EN 13757 (M-Bus) interface to choose from.
  It is easy to use special-purpose meters (non-standard form factor or measured range, e.g. indirect electricity meters rated up to 1000 A).
• M-Bus meters frequently provide extended information (total consumption and immediate values, voltage at different phases, power factor, etc...).
• Values from certified meters can be used for billing purposes.
  
  

Applications

• Remote monitoring of electricity meters in small server rooms and BTS
• Monitoring of energy consumption in rented premises
• Reading out energy consumption in remote or inaccessible areas
• Control over energy costs
• Checking for individual line overloads in three-phase wirings
• Checking for undervoltage in electric wirings
• Monitoring the flow of liquids

Collecting data from 1 to 25 M-Bus electricity meters

• Various energy meters (equipped with the M-Bus interface) are connected to the HWg-PWR unit.
• All values are available to external software over LAN and SNMP.
• Energy consumption details can be viewed using the Web interface or an iPhone or Android app.

Server room: Energy consumption monitoring + phase outage detection

• Up to 25 electricity meters measure the single-phase or three-phase consumption of the cabinets.
• Up to 8 inputs can detect phase outages.
• When a phase fails, a warning can be e-mailed.
• Upon an alarm (phase failure or current out of range), a text message alert can be sent to a mobile phone via an external SMS Gateway.
• Energy consumption data can be connected to any SCADA system (Modbus/TCP) or accessed over SNMP.

Measuring energy consumption with S0 pulses and M-Bus meters

• Modern electricity meters with the M-Bus interface can be connected to HWg-PWR directly.
• Older electricity meters with a S0 pulse output can be connected using a “S0-M-Bus” converter.
• Current consumption charts are available through the HWg-PWR web interface.
• Every day, week or month, HWg-PWR e-mails a report. The e-mail contains a billing statement including KWh and a conversion to currency.
• When the current consumption exceeds or drops below a set threshold, the unit sends an e-mail alert.

Remote energy metering with a central WEB portal

• Various energy meters are connected to a single HWg-PWR unit.
• Each unit has a WEB interface for configuration, viewing logs, etc.
• All consumption data are uploaded to a central portal using the HWg-Push protocol.
• The central portal (e.g. SensDesk) generates detailed analyses and statistics concerning energy consumption.

Specifications

• External M-Bus meters
  • HWg-PWR 3: 3
  • HWg-PWR 12: 12
  • HWg-PWR 25: 25
  
  
• Digital Inputs: 8x (110/230V )
  
  
• Email alert : yes
  
  
• Email reports (consumption) : yes
  
  
• HWg-PUSH protocol : yes
  
  
• M-Bus: 3/12/25 meters powered from HWg-PWR, 100 variables for all M-Bus devices
  
  
• Ethernet: 100 Base Tx
  
  
• IP protocols: ARP, TCP/IP (HTTP, NTP, SMTP, Modbus/TCP), UDP/IP (SNMP)
  
  
• M2M protocols: HTTP (XML), SNMP, SNMP Trap, Modbus/TCP, HWg-PUSH
  
  
• Accuracy: depends on the connected meter
  
  
• Power supply: 110V/230V (10W )

Ordering Information and Accessoires

HWg-PWR 3	Smart Ethernet gateway for connecting 3 M-Bus meters to a LAN.
HWg-PWR 12	Smart Ethernet gateway for connecting 12 M-Bus meters to a LAN.
HWg-PWR 25	Smart Ethernet gateway for connecting 25 M-Bus meters to a LAN.
HWg-PWR 3 mobile box	Demonstration mobile solution for HWg-PWR 3 Mobile box can be used as temporary 1 phase (230V) meter.
HWg-SMS-GW3	HWg-SMS Gateway start set GSM SMS gateway for sending text messages from other HW group devices over the LAN. Includes an internal GSM modem, an external antenna with 3m cable, a power adapter and a CD.
HWg-PDMS 20	A windows application that collects data to a database and can export to MS Excel (20 values)
Meter 3f ED 310.DB HWG	Three-phase two-tariff electricity meter 63A with M-Bus and SO for direct measurement
Meter 1f DHZ 5/63-M-BUS	Single-phase electricity meter 63A with M-Bus
M-Count 2C	Conventer and datalogger 2x switching output (SO) / M-Bu
Meter 3f ED 310.I.DB HWG	Three-phase two-tariff electricity meter 63A with M-Bus and SO for indirect measuremen
CLA 3.1	Current transformer 1000A/5A, accuracy class 0.5S, power 10V
CLB 2.65	Current transformer 200A/5A, accuracy class 0.5S, power 10V