1. Introduction
This manual provides comprehensive instructions for the safe and efficient use of the DewinLVD 6-in-1 Electric Energy Meter, Model D52-2066. This device is designed to monitor various electrical parameters in a single-phase AC circuit.
The meter simultaneously displays six key measurement parameters:
- Voltage: AC 40-300 V
- Current: 0-100 A
- Power: 0-45000 W
- Electrical Energy (kWh): 0-999 kWh
- Frequency: 45-65 Hz
- Power Factor: 0-1 PF
It features automatic data storage upon power loss and a one-button reset function for electrical energy readings.
Figure 1: Front view of the DewinLVD 6-in-1 Electric Energy Meter, Model D52-2066, displaying various electrical parameters.
2. Safety Information
WARNING: This device operates with high voltages. Improper installation or handling can lead to serious injury or death. Always observe the following safety precautions:
- Professional Installation Recommended: Installation must be performed exclusively by qualified and authorized personnel.
- Power Disconnection: Ensure the main power supply is completely disconnected before attempting any installation, wiring, or maintenance.
- Insulation: Use appropriate insulated tools and wear personal protective equipment (PPE).
- Wiring: Follow all local electrical codes and wiring diagrams precisely.
- Material: The meter is constructed from PC flame retardant material.
- Responsibility: The use of this device is under the sole responsibility of the user.
- CE Certification: Note that the absence of specific CE certification information may limit its use in professional contexts where such guarantees are strictly required.
3. Installation and Setup
3.1 Mounting
The DewinLVD D52-2066 meter is designed for universal DIN35 mm rail mounting. It can be easily installed into a standard distribution box without the need for screws.
Figure 2: The meter mounted on a DIN rail within a distribution box.
3.2 Wiring
Before wiring, ensure the main power supply is OFF.
The meter requires connection to the AC power source and the load. Refer to the wiring diagram below for correct connections. The device includes a built-in current transformer (CT).
- Connect the AC input (Line and Neutral) to the designated terminals.
- Connect the load to the output terminals.
- Ensure all connections are secure and properly insulated.
Figure 3: Wiring diagram showing connections to a circuit breaker and load.
After installation, restore power and verify the display shows readings. If no readings appear or if the display is abnormal, immediately disconnect power and re-check all connections.
4. Operating Instructions
4.1 Display Overview
The meter features a full viewing angle color LCD screen that simultaneously displays six parameters:
- Voltage (V): Displays the current AC voltage.
- Current (A): Shows the current flowing through the circuit.
- Power (W): Indicates the instantaneous active power consumption.
- Electrical Energy (kWh): Accumulates total electrical energy consumed.
- Frequency (Hz): Displays the AC power frequency.
- Power Factor (PF): Shows the power factor of the load.
Figure 4: Detailed view of the meter's LCD display and the reset button.
4.2 Resetting Electrical Energy (kWh)
To reset the accumulated electrical energy (kWh) reading to zero, locate the "RESET" button on the front panel of the meter. Press and hold this button for approximately five seconds until the kWh reading clears. This function allows for measuring energy consumption over specific periods.
Figure 5: The blue "RESET" button for clearing electrical energy data.
4.3 Data Storage
The meter automatically stores the last power test data when the power supply is interrupted. When power is restored, the meter will continue to accumulate data from the last saved point, preventing data loss due to sudden power outages.
5. Maintenance
The DewinLVD D52-2066 Electric Energy Meter is designed for minimal maintenance. To ensure optimal performance and longevity:
- 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 operating environment is within the specified temperature and humidity ranges. Avoid exposure to excessive moisture or direct sunlight.
- Inspections: Periodically check the wiring connections for tightness and signs of wear or damage.
WARNING: Do not attempt to open or repair the meter yourself. Refer all servicing to qualified personnel.
6. Troubleshooting
If you encounter issues with your DewinLVD D52-2066 meter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or partial display | No power supply; Loose wiring; Faulty unit. | Check power connections; Ensure wiring is secure; If problem persists, contact qualified personnel. |
| Inaccurate readings | Incorrect wiring; External interference; Faulty unit. | Verify wiring against diagram; Ensure meter is not near strong electromagnetic fields; If problem persists, contact qualified personnel. |
| Display numbers disappear or dim under heavy load | Potential internal component issue or display limitation. | This issue has been reported by some users. If it significantly impacts readability, consider professional inspection or replacement. |
| Cannot reset kWh reading | Reset button not held long enough; Faulty button. | Press and hold the RESET button for at least 5 seconds; If still unresponsive, contact qualified personnel. |
If the problem persists after attempting these solutions, please consult a qualified electrician or the product supplier.
7. Specifications
| Parameter | Value |
|---|---|
| Model | D52-2066 |
| Brand | DewinLVD |
| Voltage Range | AC 40-300 V |
| Current Range | 0-100 A |
| Power Range | 0-45000 W |
| Electrical Energy Range | 0-999 kWh |
| Frequency Range | 45-65 Hz |
| Power Factor Range | 0-1 PF |
| Installation Type | DIN35 mm Rail Mount |
| Material | PC Flame Retardant Material |
| Dimensions (approx.) | 54mm (W) x 80mm (H) x 65mm (D) |
| Weight (approx.) | 150 grams (package weight) |
| Components Included | 1 Power Tester |
Figure 6: Dimensions and key specifications of the DewinLVD D52-2066 meter.
8. Warranty and Support
Specific warranty information for the DewinLVD D52-2066 Electric Energy Meter is not provided in the product details. Please refer to your purchase documentation or contact your retailer for details regarding warranty coverage.
For technical support or inquiries, please contact the vendor or the DewinLVD customer service department through the contact information provided at the point of purchase.
