[Brand Model] Changsha Weisheng DSSD331-9A Harmonic Meter

[Wiring Method] Three phase Three wire System

[Communication Protocol] DL/T645-1997 protocol; DL/T645-2007 protocol; Modbus protocol

【 Communication Interface 】 2-channel RS485 interface; 1-channel adsorption/far-infrared communication interface

【 Voltage Specification 】 3 × 100V

[Current specification] 3 × 1.5 (6) A

[Accuracy level] Active power 0.2S level; Reactive power level 2

[Meter Attributes] Three phase four wire fundamental/harmonic gateway energy meter

[Product size] 291mm × 175.5mm × 85.5mm

DSSD331-9A Three phase Three wire Harmonic Energy MeterUsing high-precision DSP measurement module and high-performance management MCU to complete energy measurementharmonicElectric energy measurement and analysis, data processing, active power accuracy level of 0.2S, with high-quality electromagnetic compatibility, strong anti-interference ability, and beautiful data interface advantages. It has the characteristics of high accuracy, high stability, high reliability, easy scalability, easy maintenance, and flexible communication methods. It adopts high-precision measurement solutions and algorithms with multiple independent intellectual property rights, achieving measurement accuracy that traditional measurement chips cannot achieve. Switching power supplies have a wide voltage range.

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, and phase division forward and reverse active power and inductive capacitive reactive power can be measured.
Input/output fundamental and harmonic active energy measurement.
Harmonic analysis (can calculate the harmonic voltage and current content, content, and total distortion rate).
● Full Chinese character dot matrix LCD display, menu style operation interface, capable of displaying partial data graphically. Large screen, wide-angle LCD display, with rich status indicators and Chinese character prompts, with backlight. Can display Chinese, English, Russian, Spanish, etc;
The maximum demand and occurrence time of active and reactive power in both forward and reverse directions for time-sharing metering.
Maximum 8 rates, two sets of time periods for primary and secondary, dual clock backup, automatic error correction, and can record up to 13 months of historical records.
6 types of data recording load curves can be set, with a capacity of up to 2M bytes (optional 4M bytes).
Measurement function: Measure the voltage, current, apparent power, active power, reactive power, power factor, phase angle, and frequency of phases A, B, and C.
Record various events such as voltage loss, current loss, total current loss, voltage qualification rate, reset, clearing demand, programming, timing, power on, overvoltage, reverse phase sequence, and cover opening.
● 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.
● Two air contact point power pulses can be selected with four channels and LED power pulse indicator light output, and alarm indicator light output.
Two standard RS485 channels and one adsorption infrared/far-infrared communication interface, with independent channels.
After a power outage, the display can be awakened through buttons, and after awakening, meter reading can be done through LCD display.
AC/DC adaptive auxiliary power supply, with priority given to the auxiliary power supply after power on;
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.
Adopting a switch mode power supply with a wide voltage range.

Product Value

1. The measurement module has extremely high accuracy, which can effectively reduce energy measurement losses, and the benefits of reducing energy measurement losses are much greater than the price of purchasing an electricity meter.

2. It has a powerful anti-theft function, which can effectively avoid the losses caused to the power supply party due to electricity theft.

3. Data communication management has the function of storing a large amount of data nodes in different time periods. By using the meter reading system to read out data, it can analyze the load and electricity consumption situation in the background to achieve energy-saving goals.

4. First tier domestic brand electric meters. The service life is over 10 years, avoiding the cost of buying and replacing meters again due to quality issues.

Applicable occasions of the product

The three-phase four wire fundamental/harmonic gateway energy meter adopts high-precision DSP measurement module and high-performance management MCU for energy measurement, with extremely high sensitivity and suitable for gateway measurement.