The sampling value measurement input interface complies with the ST/SC fiber optic interface requirements of IEEE802.3u and 100Base FX;
● Support sampling value input that complies with IEC 60044-8, IEC61850-9-2, and IEC61850-9-2LE standard specifications;
IEC61850-9-2, IEC61850-9-2LE sampling value protocol adaptive measurement, maximum support for triple merging unit measurement;
● Dual redundant wide range power supply;
Dot matrix LCD display, with intuitive, rich, and flexible display content;
● Password protection settings for electricity meter parameters;
● Two standard RS-485 and one far-infrared communication interface;
The optional meter reading interface adopts IEEE802.3u RJ45 Ethernet interface, supporting IEC61850-8-1 standard specifications
Fan;
● Support load curve, electricity freezing, and event record file service reporting functions.

Time division measurement of forward and reverse active power, four quadrant reactive power, combination 1, and combination 2 reactive power. Any combination of four quadrant reactive power can be set to measure phase wise forward and reverse active power and inductive capacitive reactive power.
Measure the voltage and current of each phase/component, measure the active power, reactive power, power factor, and grid frequency of the total and each phase/component
8 rates (configurable), two sets of time slots for primary and secondary, dual backup clock, 12 months of historical records (configurable)
8 types of historical data records, including voltage loss, total voltage loss, current loss, and voltage qualification rate (configurable), with a capacity of up to 4Mbytes
● Dual backup data storage, with self checking and error correction functions, with internal card error, clock error, voltage reverse phase sequence, loss of voltage, overvoltage, loss of current, and battery undervoltage fault alarm functions.
● Equipped with anti-theft electricity opening detection function.
After a power outage, the display can be awakened through buttons, and after awakening, meter reading can be done through LCD display.
Dual redundant wide range power supply, compatible with both AC and DC;
Record various frozen data to form a graphical analysis of abnormal electricity consumption consisting of event records, load curves, and frozen data;
The three-way optocoupler empty node can choose to output individual or three in one second pulse, demand cycle or slip time, and time period switching.

Weisheng DTAD341-ME2 three-phase four wire digital multifunctional electric meter