DC022-100m (1) direct DC energy meters are specially designed for DC EV chargers, photovoltaic power station, energy storage system and other DC metering scenarios. The energy meter adopts the integrated design of shunt and energy meter. In addition, the energy meter adopts a guide rail installation mode, which has the characteristics of small size and convenient installation. The meter supports RS485 communication and is compatible with a variety of protocols. Excellent performance in the overall measurement accuracy and functional diversity, to meet the MID, CPA, Eichrecht and other certification and regulatory requirements, is the ideal choice to meet the needs of high-precision DC metering.