Task
To develop a smart meter to measure direct and backflow active and reactive energy in three-phase 4-wire 50Hz AC circuits, capable of multirate measurement and data transmission to the user’s account by data links within automatic commercial electricity metering systems.
Solution
- Integrated CR 2032 3V battery to feed the clock and calendar where no external power supply is available
- Integrated optical interface
- Universal PLC modem
- Integrated wireless interface
- Two telemetry outputs
- Two independent RS485 communication interfaces
- SPODES/DLMS communication protocols
- Extended effective mains voltage range (measurement of power consumption and generation parameters with metrological characteristics stable throughout the entire feed voltage range)
- Redundant slot for additional communication modules
- Logging of self-test results, setup changes, events
- Up to 8 electricity rates
- Mains parameters monitoring, overrange warning
- Informative settable reading indication at the meter display
- Individual self-testing for each meter module
- Protection against electric shock: the meter is rated Class II equipment of Transient Overvoltage Category III, Pollution Degree 2