DTSU666 series three phase four wire and DSSU666 series three phase three wire electronic
energy meter (din-rail) (hereinafter referred to as the “instrument”) is designed based on power
monitoring and energy metering demands for electric power system, communication industry,
construction industry, etc. as a new generation of intelligent instrument combining measurement and
communication function, mainly applied into the measurement and display for the electric parameters
in the electric circuit including three voltage, three current, active power, reactive power, frequency,
positive& negative energy, four-quadrant energy, etc. Adopting the standard DIN35mm din rail
mounting and modular design, it is characterized with small volume, easy installation and easy
networking, widely applied into the internal energy monitoring and assessment for industrial and
mining enterprises, hotels, schools, large public buildings.