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Multiple Interface Energy Efficiency Management Power Distribution Monitor DDS3102-3N

Minimum Order Quantity : 100 Price : Negotiable
Packaging Details : Carton Packaging Delivery Time : 30 days
Payment Terms : T/T Supply Ability : 2000 per day (based on the number of the order)
Place of Origin: Changsha, Hunan Brand Name: Willfar Information Techonology Co., Ltd.
Certification: CPA/CMC/CE Model Number: DDS3102-3N

Detail Information

Color: Grey Celiangfanwei: 10V~700V
Gonghao: < 0.05VA Jingdu: RMS 0.2 %
Fenbianlv: 0.01V
High Light:

smart energy monitor


3 phase power monitor

Product Description

Energy Efficiency Management Device Single-phase Power Distribution Monitor DDS3102-3N


Company Profile
Willfar Information Technology Co., Ltd.
- Established in 2004;
- Listed on the STAR Market of the Shanghai Stock Exchange in December 2019;
- Leading supplier of meter reading (AMI) equipment and operation service;
- The first company to develop "One DCU Reading Multi-meter" solution in China;
- The first company to have large-scale application of technologies and systems like "CPU smart-card Charge and Control", "One DCU Reading Multi-meter", LoRa-based RF Communication and "District Metering Area (DMA)”



- DDS3102-3N single-phase power distribution monitor is a device with the function of measurement recording, power consumption recording, remote signaling and remote control, LCD display and network communication.


- The monitor can measure voltage, current, power, power factor, frequency and other power network parameters;


- It can record active and reactive power; RS-485 communication interface supports MODBUS-RTU and DL/T 645-2007 dual communication protocols;


- With switch input function, can be configured with switch output and transmission output functions.


Technical Parameters



Technical Parameters

Voltage Reference Voltage Un: AC 380V, AC220V, AC100V
Measuring Range: 10V~460V
Power Consumption: < 0.05VA
Accuracy: RMS 0.2 %
Resolution: 0.01V
Current Nominal Current In:1A, 1.5A, 5A
Measuring Range: 0.001In ~ 10A
Power Consumption: < 0.05VA (single line nominal current)
Accuracy: RMS 0.2 %
Resolution: 0.001A



Accuracy: 0.5%
Resolution: 0.001kW/kvar/kVA
Line Frequency Measuring Range: 45 Hz~65 Hz
Accuracy: 0.2%
Resolution: 0.01 Hz
Active Power

Level of Accuracy: 0.5S,

Resolution: 0.01 kWh

Reactive Power

Level of Accuracy: Level 2;

Resolution: 0.01 kvarh

Power Pulse Output

Active Power Pulse Output

Opto-isolator, 4000VRMS

Switch Output


1-way for Electromagnetic Relay Output

Normally Open Type

Contact Rating: AC 250V /5A;DC 30V /5A

Switch Input

2-way Dry Contact Input

Opto-isolator, 4000VRMS

Transducing (analog quantity) Output


4-way Transducing Output

Current Output Type (4~20mA or 0~20mA or 0~24mA)

Voltage Output Type (0~5V or 0~10V)

Accuracy: 0.5%

RS-485 Communication Interface




规约:Modbus-RTU 和DL/T 645-2007

Working Temperature -25℃~+60℃
Limit Working Temperature -35℃~+70℃
Relative Humidity ≤ 95% (non-condensing)
Power Supply AC/DC
Maximum Input Range: 40V~265V
Power Consumption: ≤1W,2VA

Case Dimension (mm): 72×72×85

Hole Diameter (mm): 67×67

Weight Around 243g






DL/T 645-2007





DDS3102-3N adopts a high-precision sampling unit and a high-speed MCU data processing unit, which can realize high-precision, wide-range accurate measurement and rapid data analysis;

A segment-code type multi-line wide angle liquid crystal display screen enables various contents displaying; the liquid crystal screen is equipped with white backlight, which can meet the requirements of consulting data in the dark environment; using non-volatile memory to store all kinds of data, the data can be saved for a long time even encountering power loss.

It supports RS-485 communication interface and industrial standard communication protocol, and the networking mode is convenient and flexible; different possible expansion on functional modules enables the different interface demands of users.


1. Full Qualification: CPA and measurement license CMC.


2. High Precision: measure / measure the whole power parameters, the accuracy of active power is Level 0.5s, the accuracy of reactive power is Class 2.


3. Wide Voltage: AC / DC operation is derived from adaptation, 40~420V AC/DC input range.


4. Multi-communication: 1-way 485 communication interface, supporting MODBUS-RTU and DL/T645-2007 protocols.


5. Multiple Interface: 2-way for switch inputs, 1-way for relay output, 4-way for analog transducing output.


6. High Performance: dustproof and waterproof, meet the national standard double insulation, level 4 EMC anti-disturbance test, class b level RF electromagnetic field interference.














Voltage Measuring        
Current Measuring        
Frequency Measuring          
Active Power Measuring          
Reactive Power Measuring          
Power Factor Measuring          
Apparent Power Measuring          
Active Power Usage Measuring            
Reactive Power Usage Measuring            
Active Power Pulse Output            
Out-of-limit Alarm Function  
Transducing Output Function  
Switch Input (Remote Signaling) Function
Switch Input (Remote Control) Function
RS-485 Communication Function


                                     Note: "√" indicates the basic function of each module. "" indicates the optional functions of the model.





Widely applied in transformer and distribution automation system, industrial control and automation system, energy management system and community power monitoring and other occasions required energy efficiency monitoring.


Energy Pulse Output


The monitor provides active power pulse output and internal Opto-isolator. The pulse output width is (80 ±20) ms,. The maximum allowing current is 10mA (DC), and the working voltage range is 5V~80V (DC).

Multiple Interface Energy Efficiency Management  Power Distribution Monitor DDS3102-3N 0


Switch Input Interface


The monitor is equipped with two digital switch input interfaces, which are connected by passive dry contact. The terminal marks are DI1, DI2 and COM, in which the COM interface is a common pole.

Multiple Interface Energy Efficiency Management  Power Distribution Monitor DDS3102-3N 1


Relay Output Interface


The monitor is equipped with relay output interface, which can be used for alarm indication or protection control output in many cases. The electrical parameters of the internal relay are: AC 250V/DC30V, 5A.

Multiple Interface Energy Efficiency Management  Power Distribution Monitor DDS3102-3N 2



Multiple Interface Energy Efficiency Management  Power Distribution Monitor DDS3102-3N 3




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