Introduction

It can measure real-time voltage, current, active power, apparent power, power factor and other operating parameters, 

and measure positive and negative active electric energy.

It supports the function of single-phase two-way metering, and one product measures the power consumption information 

of two users.

It supports four control modes (local prepaid control, local time control, local time control and cost control combined control, 

remote control).

It supports LCD display, and supports two display modes of automatic rotation display and manual rotation display.

It supports daily freezing function and can store frozen data for 30 days.

With thermal resistance load learning and identification function, it can accurately identify the thermal resistance load with 

the lowest power of 25W within 3-6s.

With 485 interface, the communication protocol complies with DL / T 645-2007 protocol.

The functions of load monitoring, holiday power protection and thermal resistance load identification can be enabled or 

disabled according to the needs of power consumption management of public buildings

Hardware platform

SOC：Renergy RN8213

Application

Suitable for scenarios such as smart campuses and safe campuses, power management and control of public buildings such 

as universities, hospitals, and large commercial complexes

Cooperation mode

Schematic diagram, PCB diagram and BOM signing are free of charge,
Intellectual property and source code are optional

Service

PCB modification, Function customization

Technical parameter

Accuracy class:B

Nominal voltage:220V

Current rating:0.25-0.5(60)A

Pulse constant:1000，2000 imp/kWh

Frequency:50Hz

Communication protocol:RS485, DL/T 645-2007

Working temperature:–25 ℃～55 ℃

Working temperature limit:–40 ℃～70 ℃

Operating range limit:0.8Unom～1.15Unom

Power Consumption:In non communication state, the voltage line shall not be greater than 1.5W and 8VA

Thermal Resistance Load Identification Minimum Power:≧25W