Have you ever seen such a small size and big intelligence of three-phase smart meter
The up link of the smart meter is 4G (CAT1) communication, and the down link reads from the meter through RS485 with concentrator function; the sub-meter is RS485 communication. Three-phase smart meter specific parameter functions.
1、Voltage AC 3*220/380V±20%; 0.25~5(80)A
2、The metering accuracy is 1.0 class for active power and 2.0 class for reactive power; built-in 100A relay as load control.
3、Power demand, apparent power demand, daily maximum demand, monthly maximum demand, demand interval 5-60 minutes can be set, slip time 1-5 minutes can be set.
4、Freeze power: timed freeze, instantaneous freeze, daily power, monthly power
5、Rates: 4 tariffs, 8 time periods
6、Event alarm: loss of voltage, over-voltage, phase failure, abnormal frequency, over-current, overload, power failure record, voltage imbalance, current imbalance, load switch misoperation
7、Communication protocol DLT645-2007/Modbus dual protocol compatible; 4G communication (CAT1) supports MQTT
8、Designed to comply with IEC62052-11 2020, IEC62053-21 2020; GB/T 17215-211 2021, GB/T 17215-321 2021 standards, meeting MID, CPA certification.
9、Rail-mounted, small size, easy installation
This series of three-phase smart meter products in the project design carefully analyze the market demand around the concept of small size, ease of installation, high cost performance, in the overall application framework, specific chip program selection, structure of the installation method have been fully reflected. The adoption of the smart and sub meter GPRS smart meter and RS485 smart meter matching mode, can be flexibly applied to a variety of environments and eliminate the use of concentrator, reducing the application cost. The use of rail mounting reduces the size for easy installation, and the volume reduction also reduces the material cost of the case. The chip selection is determined by comparing and testing three solutions and combining them with the cost, and the advantageous solution is adopted under the premise of ensuring product performance and quality.