DTS-121S Series front board mounted three phase electronic active energy meter is used for measuring electric energy in three phase active energy system.This meter adopts many advanced technologies of research and development, like micro-electronic techniques, specialized large-scale integrated circuit, digital sampling and processing technology, SMT technique and so on. The meter completely accord with relevant technical requirements stipulated in the International Standards IEC62052-11 and IEC62053-21  for Class 1 three phase active energy meter.It can accurately measure 50Hz or 60Hz active energy consumption from three phase AC electricity net.It is used for setting in indoor or outdoor meter box.It has following features:High reliability,light weight,specious appearance,convenient installation etc.

Front board three fixed installation, 198-212mm between up and down mounting holes,which user can choose freely.
Standard configuration 6 digits (999999kWh)step motor impulse register display, may select 5+1 digits step motor impulse register display
Standard configuration with polarity passive energy impulse output terminal (polarity), May select polarity passive remote energy impulse output terminal (nonpolarity), complying with standard IEC 62053-21，IEC62052-11 and DIN 43864
4 LED lights instruct respectively for power supply state for each phase and signal of power impulse.
May select automatic detection the load current flow direction and instruction on special LED light.
Measure three phase four wire active energy consumption in one direction with three element, it is not influenced by the direction of load current flow. Standard configuration direct connection.
Standard configuration short terminal cover, may select extension terminal cover to protect use safety.