Abstract：This article introduces the application of the IoT power meter in a project in Hongkong.APM series power meter is a smart meter designed for power monitoring needs of power systems, industrial and mining enterprises, utilities, and intelligent buildings.

1.Project Overview
  A project in Hong Kong requires a batch of Internet of Things power meters with remotely reading function to replace the original pointer meter. We have recommended our APM810 multi-function power meter, AWT100/4GHW gateway and IoT Cloud Platform.After comparing in various aspects, Hong Kong customer recognize that our power meter is convenient to install with rich functions.Using with our gateway(AWT series), it could connect with our IoT Cloud Platform and check the data remotely. Customers can monitor the electricity situation anytime and anywhere through mobile phone APP or web login.

2.Product Presentation
 
  APM series meters integrate measurement of full electric parameters, such as three-phase current, voltage, active power, reactive power, apparent power, frequency, power factor. It also has functions of energy statistics, event record,harmonic measurement.

  AWT100 data conversion module is a new data conversion DTU launched by Acrel Electric. Communication data conversion includes 2G, 4G, NB, LoRa, LoRaWAN, GPS, WiFi, CE, DP and other communication methods. The downlink interface provides a standard RS485 data interface. It can be easily connected to power meters, RTUs, PLCs, industrial computers and other equipment, and only needs to complete the initial configuration at a time to complete the data collection of the MODBUS equipment; at the same time, the AWT100 series of wireless communication terminals use powerful micro-processing chips to cooperate Built-in watchdog technology, reliable and stable performance.

3.Network Topology

4.Installation Picture

Bibliography 
1.Solutions for enterprise micro-grid system 2021.04