1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Smart 3 Phase WiFi Energy Meter (Model ATMS100133). This device is designed for accurate energy monitoring in three-phase four-wire electrical systems, suitable for both residential and industrial applications. It allows for real-time tracking of energy consumption and generation via the Tuya Smart App.
2. Safety Information
WARNING: Electrical shock hazard. Installation and servicing should only be performed by qualified personnel.
- Always disconnect power at the main circuit breaker before installing or servicing the meter.
- Ensure all wiring connections are secure and comply with local electrical codes.
- Do not operate the device if it appears damaged.
- This device is intended for indoor use in dry environments.
- Keep out of reach of children.
3. Package Contents
- 1 x Three-phase WiFi Smart Meter (Model ATMS100133)
- 3 x Split-Core Current Transformers
4. Product Overview
4.1 Key Features
- 3-Phase 4-Wire Energy Monitoring: Designed for 3x230/400V, 50/60Hz circuits up to 100A.
- Bi-directional Energy Measurement: Tracks both grid consumption (forward energy) and solar generation (reverse energy).
- Real-Time Remote Monitoring: Access electricity data via the Tuya Smart App (2.4GHz WiFi).
- Split-Core Current Transformers: High-accuracy (0.5 class) 1000:1 ratio CTs for easy installation without cutting wires.
- Comprehensive Data Tracking: Records total active energy, forward/reverse energy, voltage (V), current (A), active/reactive power (kW/kVar), and power factor.
- Multi-User Sharing & Smart Alerts: Share device access and receive consumption insights.
- DIN Rail Mounting: Standard 35mm DIN rail compatible for easy integration into electrical panels.
4.2 Components
The system consists of the main Smart Meter unit and three split-core Current Transformers (CTs).
5. Specifications
| Parameter | Value |
|---|---|
| Model | ATMS100133 (WiFi Type) |
| Nominal Voltage | 100-240V AC (50/60Hz) |
| Rated Voltage | AC 3x230V/400V (Normal Un: 180~260V) |
| Operating Voltage Range | (0.8...1.1) Un |
| Rated Current | Up to 100A (Range: 0.02A-100A) |
| Rated Power | 2.2VA/0.7W |
| Self-consumption | 2.2VA/0.7W |
| WiFi Frequency | 2.4GHz |
| Poles | 3 Phase 4 Wire, 4P |
| Wiring Method | Neutral and Live Wire |
| Ambient Temperature Range | -20℃ to +60℃ |
| Mounting | DIN Rail 35 mm (EN 60715) |
| Compatible App | Tuya Smart |
| DIY Supplies Category | Electrical |
| Dimensions (Meter) | 90mm (L) x 65.5mm (W) x 18mm (D) (Approximate, based on diagram) |
6. Setup and Installation
IMPORTANT: Installation must be performed by a qualified electrician in accordance with all local and national electrical codes.
6.1 Physical Installation
- Power Disconnection: Before starting, ensure the main power supply to the electrical panel is completely disconnected. Verify with a voltage tester.
- Mounting: Mount the Smart Meter onto a standard 35mm DIN rail within your electrical panel.
- Wiring the Meter:
- Connect the Neutral (N) wire to the N terminal on the meter.
- Connect the three Live (L1, L2, L3) wires to the corresponding L1, L2, L3 terminals on the meter.
- Ensure all connections are tight and secure.
- Connecting Current Transformers (CTs):
- Identify the three main phase wires (L1, L2, L3) that you wish to monitor.
- Open each split-core CT and clamp it around one of the phase wires. Ensure the arrow on the CT points in the direction of current flow (typically towards the load).
- Connect the red and black wires from each CT to the corresponding B1/R1, B2/R2, B3/R3 terminals on the meter. For example, CT for L1 connects to B1/R1, CT for L2 to B2/R2, and CT for L3 to B3/R3.
- The CTs are designed for 0-100A measurement and do not require cutting the main wires.
6.2 App Connection (Tuya Smart)
- Download App: Download the "Tuya Smart" app from your smartphone's app store (iOS or Android).
- Register/Login: Open the app and register for a new account or log in if you already have one.
- Power On: Restore power to the electrical panel. The meter should power on.
- Pairing Mode: Press and hold the "Touch 5s to Connect" button on the meter for approximately 5 seconds until the WiFi indicator light starts blinking rapidly. This indicates pairing mode.
- Add Device: In the Tuya Smart app, tap the "+" icon to add a new device. Select "Electrical" -> "Energy Meter (Wi-Fi)".
- Connect to WiFi: Follow the on-screen instructions to connect the meter to your 2.4GHz WiFi network. Ensure your phone is also connected to the same 2.4GHz network during setup.
- Device Added: Once successfully connected, the WiFi indicator light on the meter will become solid, and the device will appear in your Tuya Smart app.
7. Operating Instructions
Once connected to the Tuya Smart App, you can monitor your energy usage in real-time and access historical data.
7.1 Real-Time Monitoring
The app displays various metrics:
- Total Active Energy (kWh)
- Positive Active Energy (kWh) (Grid Consumption)
- Reverse Active Energy (kWh) (Solar Generation)
- Total Active Power (kW)
- Total Reactive Power (kVar)
- Total Power Factor
- Current (A) for each phase (L1, L2, L3)
- Voltage (V) for each phase (L1, L2, L3)
- Power (W) for each phase (L1, L2, L3)
The meter supports bi-directional metering, allowing you to track both energy consumed from the grid and any energy generated (e.g., from solar panels) and fed back into the grid.
7.2 Data Sharing and Alerts
- You can share device access with other users through the Tuya Smart App for collaborative energy management.
- Set up smart alerts for consumption thresholds or anomalies to optimize energy efficiency.
8. Maintenance
- Cleaning: Gently wipe the meter with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Connection Check: Periodically check all wiring connections to ensure they remain tight and secure.
- Firmware Updates: Keep the Tuya Smart App updated to ensure the best performance and access to new features. The meter's firmware may also be updated via the app.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter not powering on | No power to the circuit; incorrect wiring. | Check main circuit breaker. Verify wiring connections (L1, L2, L3, N). Consult a qualified electrician. |
| Cannot connect to WiFi / App | Incorrect WiFi password; 5GHz WiFi network; meter not in pairing mode; weak WiFi signal. | Ensure correct 2.4GHz WiFi network and password. Press and hold the connect button for 5 seconds to enter pairing mode. Move meter closer to router or use a WiFi extender. |
| Incorrect energy readings | CTs installed incorrectly (e.g., arrow direction); loose CT connections. | Verify CT arrow direction (should point towards the load). Ensure CT wires are securely connected to the meter. |
| App shows device offline | WiFi disconnected; meter lost power. | Check WiFi router status. Verify meter has power. Re-pair the device if necessary. |
10. User Tips
- For optimal performance, ensure your WiFi network is stable and provides good signal strength at the meter's installation location.
- Regularly review your energy consumption data in the Tuya Smart App to identify trends and potential areas for energy saving.
- Utilize the bi-directional metering feature to accurately track both grid usage and any energy generated by renewable sources like solar panels.
- Consider setting up automated reports or alerts within the Tuya app to stay informed about significant changes in energy usage.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
