This 3-Phase Tuya WiFi Smart Energy Meter is designed for accurate bi-directional energy monitoring and comprehensive electrical protection in residential, commercial, and industrial installations. The device combines real-time kWh measurement with configurable safety limits for voltage, current, leakage, and temperature, enabling reliable system protection and smart energy management through the Tuya Smart ecosystem.

Key Features

• Bi-Directional Energy Monitoring: Measures imported and exported energy (kWh), suitable for grid-tied and renewable energy systems.
• Advanced Electrical Protection: Adjustable over/under voltage, over/under current, leakage current, and high-temperature alarms.
• Three-Phase Imbalance Detection: Monitors current and voltage imbalance across all three phases to prevent equipment damage.
• Smart Control & Automation: Remote control, device sharing, and automation through the Tuya Smart app.
• Voice Assistant Support: Compatible with voice control for hands-free operation.
• Customizable Recovery & Delay Times: Fine-tune protection delays and automatic recovery behavior for stable operation.
• DIN-Rail Installation: Suitable for electrical distribution boards and control panels.

Technical Specifications

• Rated Voltage: AC 380V (Three-Phase)
• Operating Voltage: AC 80–400V (Single Phase)
• Frequency: 50Hz / 60Hz

Protection & Monitoring Functions

• Over Voltage Limit: 120–300V (Default: 275V)
• Under Voltage Limit: 80–210V (Default: 175V)
• Over Current Limit: 1–100A (Default: 80A)
• Under Current Limit: 1–100A (Default: 10A)
• Leakage Current Limit: 10–99mA (Default: 29mA, transformer required)
• High Temperature Alarm: 10–85 °C (Default: 85 °C)
• Three-Phase Current Imbalance Alarm: 10–100% (Default: 20%)
• Three-Phase Voltage Imbalance Alarm: 0–100% (Default: 20%)

Timing & Control

• Over/Under Voltage Protection Delay: 1–9999s (Default: 3s)
• Over/Under Voltage Recovery Time: 1–9999s (Default: 20s)
• Over/Under Current Protection Delay: 0–9999s (Default: 5s)
• Over/Under Current Recovery Time: 0–9999s (Default: 20s)
• Lost Current Recovery Delay: 1–9999s (Default: 20s)
• Lost Flow Event Threshold: 1–999s (Default: 10s)

Additional Functions

• Energy Consumption Zero Clearing
• Factory Settings Reset
• Display Mode 1 / 2
• Remote Control & Device Sharing
• Voice Control Support

Installation Note

One neutral wire and three phase (live) wires must pass through the current transformer simultaneously; otherwise, leakage current measurement will not function correctly.