residential meters
REXUniversal Meter
Designed with advanced capabilities, the REXUniversal meter platform utilizes a software definable, unlicensed 900 MHz radio.
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Overview
This standards-based approach supports Honeywell’s EnergyAxis and SynergyNet (IPV6) mesh networks today, and future proof the utility investment as technologies such as WiSUN become prevalent. The meter also supports 2.4 GHz (Zigbee) communications for home area networks (HAN).INTERNAL SERVICE CONTROL SWITCHREXUniversal meters are available with an optional 200 A integrated service control switch. Based on significant field experience, the service control switch has been optimized to provide low contact resistance for increased life. Meters with service control switches are externally indistinguishable from meters without switches, thereby protecting utilities from consumer concerns about targeted deployment. REXUniversal meters support advanced demand limiting and lockout functionality, and switches may be operated by authorized utility personnel through the network or locally at the meter.FIRMWARE UPGRADES OVER-THE-AIRUsing proven code management architecture, our technology allows remote upgrades of meter and communications firmware while ensuring endpoint network functionality remains intact. The ability to separately upgrade the meter, communications, and ZigBee firmware protects your AMI investment and allows you to meet future requirements of the smart grid without concern of technology obsolescence. The meter’s communication firmware can be remotely configured from Honeywell’s Lan2 to SynergyNet (IPV6) as part of an overall network upgrade.OVER-THE-AIR METER CONFIGURATION CHANGESHoneywell’s Metercat™ software is used to create the configuration profile for the REXUniversal meter. Metercat is used to create the initial (that is, factory) program, but can also be used to directly reprogram the meter or to create program components that can be transferred over an AMI system. Program components are an encapsulated, signed block of data that can be transferred without interpretation by the AMI system. When received, the meter validates the signature and validity of the program for the specific meter type, and if valid, performs the configuration upgrade.OUTAGE RESTORATION AND RESTORATION FUNCTIONALITYThe REXUniversal meter provides advanced outage and restoration support, enhancing the utility’s ability to more quickly identify the scope of outages and to receive positive restoration messages to validate that power has been restored to every endpoint. When a power failure occurs, the power supply provides energy for radio operation for up to 2 minutes, allowing momentary outages to be filtered and outage messages to be forwarded through the AMI network. After the 2 minute period, the meter maintains a real-time clock for up to 8 hours. This time carryover is performed without the maintenance concerns of a battery. The meter also provides the status information to support outage index calculations:– Number of momentary outages – Number of sustained outages – Cumulative time of sustained outagesINSTRUMENTATION PROFILINGThe REXUniversal meter provides the ability to record up to six channels of instrumentation (for example, voltage) profile data with 5-, 15-, 30- or 60- minute resolution. Instrumentation data channels are configured to report one or more of the following options: snapshot, minimum, maximum, or average per-phase voltage.
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