HWg-PWR – Ethernet energy meter
HWg-PWR is an Ethernet-enabled device for remote monitoring and metering of electricity, heat, water or gas consumption using electricity meters, water meters, gas meters, heat meters and other sensors equipped with the M-BUS interface. In addition to metering, the device also supports alarming through e-mail or SNMP traps whenever allowed values are exceeded.
M-BUS is a standard in energy metering. As opposed to pulse counters, it works with absolute values (acquired data can be used as an argument against the utility bill), and at the same time allows working with additional quantities, such as voltage, current, flow, drift, etc.
Features:
* Ethernet: RJ45 (10BASE-T)
* WEB: Embedded WEB server / GUI
* Works with up to three M-BUS sensors (electricity meters, gas meters...)
* Unlimited number of measured quantities*
o Instantaneous power input
o Total consumption
o Line voltage
o Line current
o Flow speed
o etc.
* Automatic detection of sensors and measured quantities
* Support for certified and calibrated meters
* Supports single-phase and polyphase electricity meters
* Supports single-tariff and multi-tariff meters
* Logging of measured values with the option to plot graphs
* Configuration of allowed range of measured quantities
* Independent energy counters for periodic readings (daily, weekly, monthly, annually, ...)
* Configuration of the measured unit and the exponent
* Periodic e-mailing of acquired values over HTTP and by e-mail
* DIN rail mount with a power supply for M-BUS
* M2M communication protocols: SNMP, XML and Modbus/TCP
* Response to thresholds: SNMP trap, Email
* Support for programmers: HWg SDK
* Supported software
o HWg-PD Trigger: Controls other IP devices, redirects alarms to SMS
o HWg-PDMS: Logging, export to MS Excel
o >> Third-party SNMP software
(HP OpenView, IBM Tivoli, Nagios, Zabbix, Monitor one, The Dude, Paessler IPCheck, Ipswitch WhatsUp, Axence nVision, CBR little:eye, LoriotPro, GFi NSM, SNMPc 7, CA NSM, ActiveXperts NM, Intellipool NM, MSC Operations Manager 2007)
* Displayed quantities depend on the actual meter
Usage examples
* Remote monitoring of electricity meters in small server rooms and BTS
* Monitoring of energy consumption in rented premises
* Acquiring energy consumption readings 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 |
Typical application
HWg-PWR: energy meter online demoIn a typical scenario, HWG-PWR remotely monitors an electrical network, and the user can simultaneously monitor several parameters:
* Total electricity consumption
* Instantaneous electricity consumption
* Instantaneous voltages at individual lines
* Instantaneous current flowing through each line
* Power factor (cos ϕ) of individual lines
An allowed range of values can be configured for currents and voltages; if the instantaneous value is lower (voltage) or higher (current), an alarm is sent by e-mail or SNMP trap to your monitoring system.
This makes it easy to:
* Monitor the total and instantaneous consumption of your customers
* Monitor the total load on your electricity distribution system over time and plan changes
* Provide periodic reports
* Inform about critical situations
* Avoid phase overloading caused by unsuitable load distribution or undervoltage due to wiring problems. |
