1. Product Overview
The Elecnova DDSF1946 is a single-phase digital energy meter designed for accurate measurement and monitoring of electrical parameters in AC 230V 5(100)A 50/60Hz systems. It provides precise readings for AC voltage, current, active power, frequency, power factor, and energy consumption. Key features include automatic data storage during power interruptions and a re-measurement function for enhanced reliability. The meter is constructed with high-quality, fire-resistant ABS and PC alloy materials for durability and safety, and is designed for DIN-rail mounting.
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Elecnova DDSF1946 Digital Energy Meter.

Figure 1: Front view of the Elecnova DDSF1946 Digital Energy Meter.
2. Safety Information
WARNING: Installation and servicing of this device should only be performed by qualified electrical personnel. Failure to follow these instructions may result in electrical shock, fire, or serious injury.
- Always disconnect power before installing or servicing the meter.
- Ensure proper grounding to prevent electrical hazards.
- Verify that the voltage and current ratings of the meter match your electrical system.
- Do not operate the meter if it appears damaged.
- Keep the device away from moisture and extreme temperatures.
3. Specifications
| Parameter | Value |
|---|---|
| Brand | Elecnova |
| Model Number | DDSF1946 |
| Power Source | Corded Electric |
| Rated Voltage | AC 230V |
| Rated Current | 5(100)A |
| Frequency | 50/60Hz |
| Measurement Type | Multimeter |
| Dimensions (L x W x H) | 2.6 x 3.7 x 2.8 inches |
| Item Weight | 10 Ounces |
| Material | ABS and PC alloy |
| Certification | CE |
4. Setup and Installation
The DDSF1946 energy meter is designed for DIN-rail mounting. Ensure the mounting location is dry, well-ventilated, and free from excessive vibration or electromagnetic interference.
4.1 Mounting
- Locate a standard 35mm DIN rail in your electrical panel.
- Align the meter's DIN-rail clip with the rail.
- Press the meter firmly onto the DIN rail until it clicks into place.
4.2 Wiring Diagram
Refer to the diagram on the side of the meter for correct wiring connections. Ensure all connections are secure and comply with local electrical codes.

Figure 2: Side view with wiring diagram and terminal labels.
- Connect the incoming Live (L) and Neutral (N) wires to the designated input terminals.
- Connect the outgoing Live (L) and Neutral (N) wires to the designated output terminals.
- For RS485 communication, connect the A and B terminals to your communication network, if applicable.
- Ensure the maximum current of 100A is not exceeded.

Figure 3: Bottom view showing terminal connections.
4.3 Initial Power-Up
After all wiring is complete and verified, restore power to the circuit. The meter display should illuminate, indicating successful power-up.
5. Operating Instructions
The DDSF1946 meter features a clear digital display and control buttons for easy navigation and data viewing.
5.1 Display Navigation
Use the buttons on the front panel to cycle through different measurement parameters:
- Voltage (V): Displays the current AC voltage.
- Current (A): Displays the current AC current.
- Active Power (W): Displays the instantaneous active power consumption.
- Frequency (Hz): Displays the system frequency.
- Power Factor (PF): Displays the power factor.
- Energy Consumption (kWh): Displays the accumulated energy consumption.
- Tariffs: Allows monitoring and management of electricity costs. Refer to the meter's specific tariff settings for configuration.
5.2 Data Storage and Re-measurement
The meter automatically stores energy data during power interruptions. Upon restoration of power, data accumulation seamlessly resumes, preventing potential data loss. The energy data re-measurement function ensures accuracy and reliability of readings over time.
6. Maintenance
The Elecnova DDSF1946 Digital Energy Meter requires minimal maintenance to ensure optimal performance and longevity.
- Cleaning: Periodically wipe the meter's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Inspection: Regularly inspect the wiring connections for any signs of loosening or damage. Ensure the meter is securely mounted on the DIN rail.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent damage.
7. Troubleshooting
If you encounter issues with your Elecnova DDSF1946 meter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter display is off | No power supply; loose wiring connection. | Check power supply to the circuit; verify all wiring connections are secure. |
| Incorrect readings | Improper wiring; meter fault. | Review wiring diagram and ensure correct connections; if problem persists, contact support. |
| Communication error (RS485) | Incorrect wiring; network issue. | Check RS485 wiring (A/B terminals); verify network configuration. |
For issues not listed above or if troubleshooting steps do not resolve the problem, please contact Elecnova customer support.
8. Warranty and Support
Elecnova products are manufactured to high-quality standards and are backed by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Elecnova website.
For technical assistance, product inquiries, or warranty claims, please contact Elecnova customer support through their official channels. Provide your product model number (DDSF1946) and purchase details for efficient service.
9. Additional Resources
For a general introduction to Elecnova's brand and product range, you may view the following video:
Video: Elecnova Brand Energy Meter & MCB Introduction. This video provides an overview of Elecnova's commitment to intelligent power distribution solutions and their product ecosystem.