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      Single-phase IoT energy meter (din rail)Type DDZY2397

      • Product introduction

      DDZY2397 single-phase fee controlled smart energy meter is a full-digital intelligent energy meter developed by our company. It adopts a SOC highly integrated chip. In addition to the active energy metering function, it also has multiple functions such as online power display, intelligent anti-theft electricity, overload control, and remote centralized meter reading.

      • Details
      • DDZY2397 single-phase fee controlled smart energy meter (single-phase IoT energy meter (din rail) is a full-digital intelligent energy meter developed by our company. It adopts a SOC highly integrated chip. In addition to the active energy metering function, it also has multiple functions such as online power display, intelligent anti-theft electricity, overload control, and remote centralized meter reading. The data is transmitted to the corresponding platform through the wireless network of LoRaWAN/NB-IoT/Cat.1(4G)/Bluetooth. It has the advantages of high precision, low power consumption and good stability. Widely used in single-phase alternating current metering occasions such as various residences, intelligent buildings, markets and  malls, collective dormitories, and schools.

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        Functions and features

        1.Measuring positive and negative active energy. It can measure, store, and display the operating parameters and status of the current electric energy meter such as voltage, current, power, power factor, frequency, etc. With overload protection function;

        2.Remote power off and power transmission function: send a command of power off through RS485/LoRaWAN/Cat.1(4G) and other communication methods to cut off the user load circuit. Or send a command of power transmission to connect the user load circuit;

        3.Active upload/two-way transparent transmission function: actively upload data to the corresponding platform through the LoRaWAN/Cat.1 (4G) wireless network, the default interval is 4 hours (settable);

        4.The communication protocol conforms to DL/T645-2007 "Communication Protocol for Multi-function Electric Energy Meter";


        Specifications & technical parameters

        StandardsIEC62053-21, DL/T645-2007
        Rated voltage (Un)220V
        Operating voltage range80% ~120%(rated voltage)
        Rated current limit (Ib)5A
        Maximum current (Imax)60A
        Active measurement accuracyClass 2/A、Class 1/B
        Grid frequency50Hz/60Hz
        Active pulse constant1200(imp/kWh)
        Power consumption<1.0W
        Starting current≤0.004Ib
        LoRaWAN  frequencyCN470,RU864,IN865,EU868,US/AU915,KR920,AS923_1/2/3/4,Custom Channels
        Dimension 89mm×76mm×75mm
        Weight0.3kg
        Operating life >10 years
        Normal operating  range-10℃~ +45℃;
        Extreme operating  range-25℃~ +55℃;
        Transportation & storage  range-40℃~ +70℃
        Relative humidityGenerally not greater than 85% RH.Within 30 days of a year(naturally distributed), sometimes reaching 95% RH.


        Display Description

        After powering on, the LCD screen will fully display for 3 seconds. Then display the current active electrical energy and current active power alternately.

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        Wiring diagram

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        The main terminal wiring is shown in the left figure,【1】Phase Line In、【2】Phase Line Out、【3】Zero Line In、【4】Zero Line Out.There are 4 auxiliary terminals on the opposite side of the main terminal of the electric energy meter,⑥⑤is metering pulse output③④is 485 communication.


        Overall dimension (unit: mm) 

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