The Chint DDS666 Series Single-Phase Electronic Watt-Hour Meter is a metering device specifically designed for residential users, supporting high-precision electrical energy measurement and intelligent management.
I. Core Functions and Features
1. High-Precision Metering
– Supports metering of forward and reverse active electrical energy; reverse electrical energy is automatically accumulated as forward energy.
– Accuracy classes are available in Class 1 or Class 2, meeting metering requirements for different scenarios.
2. Flexible Display and Communication
Display Mode
– Meter counter display (mechanical digits) or LCD display (backlight optional).
Communication Interface
– The LCD version comes standard with infrared and RS485 interfaces, supporting the DL/T 645-1997/2007 communication protocol. It can be connected to power systems to realize remote meter reading and data management.
3. Wide-Range Adaptability
Voltage Range
– Supports 220V±20% (extended range: 0.8Un~1.2Un), adapting to power grid environments with large voltage fluctuations.
Current Specifications
– Multiple options are available, including 1.5(6)A, 5(40)A, 10(60)A, and 20(100)A, meeting the electricity needs of different households or small commercial users.
Temperature Range
– Operating temperature: -25℃~+55℃; extreme temperature: -40℃~+70℃, suitable for harsh environments.
4. Low Power Consumption and Reliability
– Power consumption of voltage circuit ≤ 2W/5VA; power consumption of current circuit ≤ 1VA, ensuring energy efficiency during long-term operation.
– Adopts industrial-grade components and SMT (Surface Mount Technology) process, featuring strong anti-interference capability and a service life of over 10 years.
II. Model and Price Reference
| Model | Current Specification | Display Mode | Communication Interface | Market Price (2025) |
| DDS666 220V 5(20)A | 5(20)A | Meter Counter | None | ￥141.00 |
| DDS666 220V 10(60)A | 10(60)A | LCD | RS485/Infrared | ￥352.00 |
| DDS666 220V 20(80)A | 20(80)A | LCD | RS485/Infrared | ￥432.00 |
**Note**: Prices may fluctuate due to differences in sales channels and regions. For specific quotations, please refer to WhatsApp: 0086-13811255435.
III. Installation and Usage Guide
1. Installation Method
Dimensions
– The meter counter display model has dimensions of 150mm×118mm×59mm, and the LCD display model is 160mm×112mm×58mm, both compatible with standard meter boxes.
Wiring
– Adopts 4 terminal blocks (1 for live wire input, 2 for live wire output, 3 for neutral wire input, 4 for neutral wire output). Installation must be performed by a professional electrician to ensure secure wiring and no short circuits.
2. Usage Precautions
– Avoid installation in humid, high-temperature, or strong magnetic field environments; it is recommended to install the meter in a well-ventilated location.
– Clean the meter body regularly to prevent dust accumulation from affecting heat dissipation and display performance.
– If verification is required, contact a professional metering institution; do not disassemble the meter by yourself.
3. Remote Meter Reading Configuration
– Connect to a concentrator or intelligent meter management system via the RS485 interface, supporting batch data collection and analysis.
– Can be used with the Chint Cloud Platform to realize functions such as real-time electricity consumption monitoring and electricity fee statistics (additional communication module is required).
IV. Common Issues and Maintenance
1. Troubleshooting
No Display
– Check if the power supply is normal, if the fuse is blown, or try restarting the meter.
Communication Failure
– Confirm whether the RS485 wiring is correct and whether the baud rate setting matches the system.
Abnormal Metering
– If inaccurate metering is suspected, use verification equipment to test the pulse output or contact the power supply department for verification.
2. Maintenance Recommendations
– It is recommended to conduct a comprehensive inspection every 5 years to ensure metering accuracy and equipment stability.
– Disconnect the power supply when the meter is not in use for a long time to extend its service life.
V. Recommended Alternative Models
If the DDS666 cannot meet your needs, the following models can be considered:
1. DDSY666 Prepayment Watt-Hour Meter
– Supports Bluetooth recharge and payment via mobile app, suitable for scenarios requiring prepayment management.
– Equipped with over-load protection and balance alarm functions to avoid power outages due to unpaid fees.
2. DDSU666 DIN-Rail Watt-Hour Meter
– Compact size, can be installed on a 35mm DIN rail, suitable for scenarios with limited space in distribution boxes.
– Supports the Modbus protocol, facilitating integration into industrial automation systems.
VI. Purchase and After-Sales Service
Purchase Channel
– Chint Electric official website; WhatsApp: 0086-13811255435
With its high reliability, flexible configuration, and cost-effectiveness, the Chint DDS666 Series Meter is an ideal choice for household and small commercial users. Strictly following the operation specifications during installation and use ensures long-term stable operation of the equipment.
