Overview

DJS949 type DC electronic electric energy meter is an electric energy meter with international advanced level, which is designed and manufactured according to the actual electricity consumption by using advanced electric energy metering special chip, applying digital sampling processing technology and SMT technology. All components in the electric meter are made of electronic components with long life and high reliability. Therefore, it has the characteristics of long life and high reliability.

The meter uses a high-precision sampling measurement unit and a high-speed MCU data processing unit, which can achieve high-precision, wide-range, accurate measurement and fast data analysis. The LCD display screen is rich in display content. The display items can be customized according to customer requirements: Lost memory stores all kinds of data, which can save data for a long time without loss when power off; adopts high-precision crystal oscillator with temperature compensation function, which effectively guarantees the accuracy of the clock within the working temperature range: supports RS485 communication port and industry standard communication protocol , Convenient networking.

The main function

Metering function

1) Time-sharing measurement of total forward active energy and total reverse active energy, recording current and historical 12-month data, and independent measurement of total electrical energy and electrical energy at various rates;

2) Record the current and historical 12-month combined active power and the power of each tariff rate. The combined power is calculated by the temporary combination method. When the combination method is changed, the combined power will be recalculated;

Multi-rate function

1) Programmable 4 kinds of rates, 14 time slots, 8 daily time slots, 14 annual time zones, 32 public holidays;

2) The electric meter has 2 sets of time zone tables and 2 sets of daily time slots;

3) The built-in clock chip has calendar, timekeeping and anniversary automatic switching functions, as well as temperature compensation;

Display function

1) LCD display, which can display character and image interface;

2) It can display the current operating parameters of the electric energy meter such as voltage, current, power, and electric energy;

Communication function

1) The electric meter has an RS485 interface, and the PC or handheld computer can communicate with the electric meter through the communication interface;

2) The RS485 interface is electrically isolated from the inside of the meter, and the lightning protection circuit is designed;

3) With infrared communication function;

4) Support DL/T645-2007 and MODBUS-RTU dual communication protocol, other protocols can be customized according to customer requirements;

Output function

1) With active test pulse output;

2) With multi-function output function, it can output clock signal, time switching signal;

Event logging function

1) It has recording functions such as power failure, programming, meter reset, and time calibration record;

special function

1) With fault information prompt and alarm function;

2) It has the functions of timed freezing, instantaneous freezing, agreed freezing, daily freezing and hourly freezing;

3) Data recording function before the meter is reset.