Single Phase Meters
ALPHA Plus meter
The ALPHA Plus® meter is a totally electronic single phase or polyphase electricity meter and integral register that collects, processes, and stores energy use and demand data on either a single rate or time of use (TOU) basis. It meets or exceeds the American National Standards Institute (ANSI) standards for electricity metering and is certified for use by industrial and electric utility customers. It has been certified for direct access use in California.
ALPHA Plus is the first meter in its class that can time/date/phase stamp voltage sags as short as 2 line cycles in duration. An internal log maintains this information for the last 40 sags.
ALPHA Plus meters support metering requirements ranging from kWh and kW demand meter to multi-rate, real/reactive meter that automatically validates service connections, provides instrumentation readings and load profile readings with remote communications. ALPHA Plus meters are available in a variety of configurations to meet your revenue metering requirements. The meters also offer a PQM (power quality monitoring) option. This feature helps isolate the cause of transients, harmonics and sags. PQM monitors circuit parameters on a cyclic, 24-hour basis throughout the billing period and recognizes deviations beyond the programmed threshold for each phase.
Instrumentation on the ALPHA Plus meter are display quantities that assists in evaluating the service by providing real time analysis of the conditions present at the meter installation. The instrumentation measurements are near instantaneous and require no memory storage within the meter. Using Elster meter support software, system instrumentation may be configured to select which quantities to display as well as the display sequence where they will be shown.
A3 ALPHA meter
The A3 ALPHA® meter uses Elster’s patented digital measurement techniques that offer high accuracy, repeatability, and low ownership costs. Building upon standard meter design that includes form consolidation, voltage and class consolidations, 0.2% accuracy class meters, functional scalability and standard two week lead times, the A3 ALPHA meter is available in single phase and polyphase form factors.
The A3 ALPHA meter is a communications platform, and it can be easily integrated into a variety of automated meter reading (AMR) and advanced metering infrastructure (AMI) solutions.
A100C / A102C – compact secure metering
The successful Range of A100C meters from Elster Metering Systems provide a cost effective solution for one or two rate domestic applications. The A100C meter is housed in an extremely compact case. To further enhance security, the main meter cover is permanently secured to the base during the manufacturing process.
The A100C has the option of IrDA or optical IEC 62056-21 (formerly IEC 61107) communications. Both methods of communication allow the meter registers and security data to be read electronically from a laptop or hand-held device, greatly reducing the possibility of manual meter reading errors. The IrDA data can be hardwired through the auxiliary terminals, allowing AMI modules to be added that can be used to retrieve the absolute register reads and security data.
The liquid crystal display has large (9.8mm), high contrast characters that can be viewed from a wide angle. Chevrons and multilingual legends on the nameplate identify the values being displayed. The energy registers can be configured for the required number of digits and for the position of the decimal point.
The A100C offers high security and detects many of the most commonly used tamper techniques. Security features of the meter include reverse run energy total and count; power fail and elapsed time count; hours in anti-creep; hours in Rate 1, Rate 2 and hours since last power up time. These are stored as security data and can be included as part of the display sequence and read via the optical communications ports.
The A100C can be a simple import meter or import/export for domestic or small scale generation sites. The meter offers one or two rate operation. The rate select for the two rate meter is switch to neutral.
Meters can be supplied to meet accuracy Class 1 or Class 2 requirements. They are approved to EN 62053-21:2003, have an ingress protection of IP53 to IEC 60529:1989 and comply with EMC standard EN 50081-1 1992.