Web Menu

Product Search

Language

Share

Fast-Refresh Energy Meter Factory

Home / Products / Fast-Refresh Energy Meter

Fast-Refresh Energy Meter manufacturers

YTL manufactures MID-certified fast-refresh DIN-rail energy meters for solar PV, BESS, EV charging, data centers and industrial power monitoring.

What Is a Fast-Refresh Energy Meter?

A fast-refresh energy meter measures electrical energy and power variables while providing updated data through its communication interface with a short response time. In the YTL DEM series, selected RS485 variants provide a documented communication response time of ≤75 ms.

YTL fast-refresh energy meters include single-phase and three-phase direct-connected models and three-phase CT-operated models. Selected variants support Modbus RTU and DL/T 645-2007 for integration with inverters, EV charging equipment, energy management systems, BMS and industrial controllers.

The ≤75 ms value refers to the meter’s RS485 communication response time. It does not represent waveform sampling frequency, LCD refresh time, cloud upload interval or complete control-loop latency.

  • DEM3K302

    DEM3K302 Three-Phase CT Fast-Refresh MID DIN-Rail Energy Meter

    DEM3K302 Three-Phase CT Fast-Refresh MID DIN-Rail Energy Meter

  • DEM3A302

    DEM3A302 Three-Phase Direct-Connected Fast-Refresh MID DIN-Rail Energy Meter

    DEM3A302 Three-Phase Direct-Connected Fast-Refresh MID DIN-Rail Energy Meter

  • DEM2A302

    DEM2A302 Single-Phase Direct-Connected Fast-Refresh MID DIN-Rail Energy Meter

    DEM2A302 Single-Phase Direct-Connected Fast-Refresh MID DIN-Rail Energy Meter

  • DEM1E302

    DEMIE302 Single-Phase Fast-Refresh MID DIN-Rail Energy Meter

    DEMIE302 Single-Phase Fast-Refresh MID DIN-Rail Energy Meter

Welcome To A National High-tech Enterprise

Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in the center of Shanghai, Hangzhou and Suzhou cities. As a professional China Fast-Refresh Energy Meter manufacturers and Fast-Refresh Energy Meter Factory, YTL designs and produces electronic energy meters which are cost-efficient and ideal for the use in solutions for AMR/AMI at residential as well as industrial applications.YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. YTL is devoted to develop and design all types of wholesale Fast-Refresh Energy Meter, concentrators and solution applications. At present our export volume makes us a leading company for technology and product export to more than 50 countries throughout the world.

  • 2000

    Established In

  • 500+

    Employees

  • 60+

    Export Country

  • 500+

    Design Right Patent

YTL Honor

  • MID
    MID
  • KEMA
    KEMA
  • DLMS
    DLMS
  • IEC
    IEC
  • KEMA
    KEMA
  • SGS
    SGS

YTL News

View All News

Industry Knowledge Extension

What is a fast-refresh energy meter?

A fast-refresh energy meter provides energy and electrical measurement data through a communication interface with a relatively short response time.

What does the ≤75 ms specification mean?

It refers to the documented RS485 communication response time of selected YTL 302 and 202 variants.

Does ≤75 ms mean the meter has a 75 ms sampling interval?

No. Communication response time and internal measurement sampling rate are different technical parameters.

Which YTL models support fast RS485 communication?

Selected DEM1E, DEM2A, DEM3A and DEM3K variants with the 302 or 202 suffix support RS485 communication. Configuration must be confirmed by model.

Which protocols are supported?

Selected RS485 variants support Modbus RTU and DL/T 645-2007.

Are all DEM series MID certified?

The DEM1E, DEM2A, DEM3A and DEM3K series have MID certificate records. The applicable model and configuration should be checked against the certificate annex.

Can these meters connect to an inverter, EV charger, BMS or EMS?

Selected models can provide data through RS485/Modbus RTU. Final integration depends on register mapping, communication settings, gateway and controller compatibility.

How should I choose between DEM1E, DEM2A, DEM3A and DEM3K?

Selection depends on phase, voltage, maximum current, direct or CT connection, accuracy, communication, tariff functions and installation width.

Applications

Feedback

Feedback