Elster A1140-CT-MID Approved Three Phase Digital Smart Meter (CT Operated – Pulsed Output)
The A1120/40 offers highly secure tariff metering to suit any direct connected or CT, commercial or light industrial application. The A1140 offers additional load profiling.
The Liquid Crystal Display has large characters that can be viewed from a wide angle. Displayed information can be English characters or OBIS codes.
Communications are provided via the optical port and are supported by Data Stream Mode allowing fast reading of meter data. The A1140 permits up to 90 days of load profile data to be collected in less than 30 seconds. The RJ11 socket provides optional serial communications allowing remote access to the same data as the optical port. This port can be multi-dropped, allowing access to up to 10 meters in a single installation.
An SO output or a 100mA relay output can be provided as an option. The outputs can be configured by the Power Master Unit to re transmit any cumulative register or customer defined register. The pulse width and value are configurable. A further manufacturing option provides a 300mA relay which is driven by the tariff.
The meter is available in a number of variants that measure active energy, four quadrant reactive energy and kVA. Two customer defined registers can be used to summate pulses from like unit registers. A comprehensive range of instrumentation quantities are available that can be included in the display sequence.
As an option, 12 External Registers can be used to display data from an external source such as a gas or water meter. The registers are accessed via an intelligent source (such as a modem) and can be viewed on the A1120/40 meter display.
The meter offers extensive security data and the option of main cover and terminal cover removal detection. As an alternative option, the main cover switch can be used to allow the CT ratio to be changed. A special carrier can be supplied as an option for a module or battery. The carrier is simple to install and can be sealed under the terminal cover. WindowsTM ‘Power Master Unit’ software programs or reads the meter data.