1. Introduction
The UIUHUIU Single Phase Electronic Watt-hour Meter, model DDS228-LDG, is a compact and reliable device designed for measuring active energy consumption in single-phase AC circuits. It utilizes special large-scale integrated circuits and SMT technology to ensure high accuracy and stable performance. This meter is ideal for installation in limited spaces, such as distribution boxes, thanks to its 35mm DIN rail mounting capability.
The meter cyclically displays essential electrical parameters including voltage, current, power, and total energy in kilowatt-hours (kWh). It features low power consumption, contributing to energy efficiency and reduced environmental impact. Additionally, it incorporates anti-theft functions to prevent unauthorized energy usage.
2. Key Features
- High Accuracy: Employs special large-scale integrated circuits and SMT technology for precise and reliable measurements.
- Digital Display: Features a 5+1-bit wide temperature LCD display for clear readings.
- DIN Rail Mounting: Designed for easy installation on a standard 35mm DIN rail.
- Low Power Consumption: The entire machine consumes less than 2W/5VA.
- Parameter Display: Cyclically displays Voltage, Current, Power, and Energy (kWh).
- Pulse Indicator: An indicator light shows the working status of the meter.
- Anti-Theft Function: Includes features to prevent energy theft.
- Compact Design: Small size suitable for various installation environments.
- Optional Manual Reset: Some models may include a manual reset function.
3. Specifications
| Attribute | Value |
|---|---|
| Model | DDS228-LDG (also compatible with DDS442 wiring) |
| Display Type | Digital Only (LCD) |
| Phase | Single Phase |
| Measuring Energy Range | 99999.9kWh |
| Accuracy Class | Class 1/B |
| Dimensions (L x W x H) | 80mm x 36mm x 66mm (approx. 78mm height including terminals) |
| Installation | 35mm Din Rail Mounted |
| Rated Current | 5(60)A |
| Frequency | 50Hz |
| Measure | Active Energy Consumption |
| Material | ABS Plastic |
| Voltage Options | 110V-130V / 220V-240V |
| Pulse Output | 1000imp/KWH (DDS228-LDG), 1600imp/KWH (DDS442) |
4. Setup and Installation
The meter is designed for 35mm DIN rail installation. Ensure the power supply is disconnected before proceeding with installation to prevent electric shock.
4.1 DIN Rail Installation
- Locate a suitable 35mm DIN rail within your distribution box or electrical panel.
- Align the meter's back buckle with the DIN rail.
- Press the meter firmly onto the rail until it clicks into place, ensuring it is securely fastened.
4.2 Wiring Diagram
Refer to the wiring diagram below for correct connection. The meter typically has four terminals for connection: two for input (Live and Neutral) and two for output (Live and Neutral) to the load. Ensure all connections are tight and secure.
WARNING: Electrical installation should only be performed by qualified personnel. Incorrect wiring can lead to electric shock, fire, or damage to the device.
5. Operating Instructions
Once correctly installed and powered on, the meter will automatically begin measuring and displaying electrical parameters.
5.1 LCD Display
The 5+1-bit LCD display shows the measured values. The meter cycles through different parameters such as voltage (V), current (A), instantaneous power (W), and total active energy (kWh).
5.2 Pulse Indicator
The pulse indicator LED (labeled 'Pulse' on the meter face) will flash to indicate active energy measurement. Each flash corresponds to a certain amount of energy consumed (e.g., 1000imp/KWH), signifying the meter is actively working.
5.3 Manual Reset (Optional)
If your meter model includes a manual reset function, consult the specific instructions provided with your unit for details on how to reset the energy readings. This feature is not present on all models.
6. Maintenance
- Cleaning: Keep the meter clean and free from dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Environment: Ensure the meter is installed in a dry environment, away from direct sunlight, excessive heat, and moisture.
- Regular Checks: Periodically inspect the wiring connections to ensure they remain tight and free from corrosion. Check for any visible damage to the meter casing.
- Avoid Tampering: Do not attempt to open or repair the meter yourself. This may void the warranty and could be dangerous.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Meter not powering on | No power supply; Incorrect wiring; Faulty meter | Check power source; Verify wiring according to diagram; Contact support if power and wiring are correct. |
| Incorrect readings | Incorrect wiring; Overload; External interference | Recheck wiring; Ensure load is within meter's rated current; Isolate from strong electromagnetic fields. |
| Pulse indicator not flashing | No load connected; Meter malfunction | Ensure a load is drawing power; Contact support if load is present and indicator is off. |
8. User Tips
- For optimal performance and longevity, ensure the meter is installed in a well-ventilated area to prevent overheating.
- When installing, double-check the Live (L) and Neutral (N) connections for both input and output to avoid damage or inaccurate readings.
- If you notice any unusual behavior or readings, first verify the wiring and then consult the troubleshooting section.
9. Warranty and Support
This product is covered by standard manufacturer warranties. For specific warranty details, please refer to the documentation provided at the time of purchase or contact the seller directly.
9.1 After-Sales Service
- Fast Delivery Guarantee: In case of delayed delivery, a coupon code may be provided.
- Refund Policy: Refunds are available if the package is lost or if items are damaged during transit. A full refund is also offered if delivery is not made within 30 days.
- Free Returns: Enjoy free returns within 15 days of delivery.
For any technical assistance, product inquiries, or warranty claims, please contact UIUHUIU Sensor Store customer support.
Video 1: Product Overview and Features
