Tuya WiFi Smart 3-Phase Energy Power Meter & Protector (Model: PST-RMDZW-3P)
The
PST-RMDZW-3P is an advanced, high-capacity 100A smart DIN-rail energy meter designed for comprehensive multi-phase electrical monitoring and protective grid management. Operating seamlessly over your local 2.4GHz Wi-Fi network via the
Tuya / Smart Life app, this intelligent device acts as both a bidirectional power tracker—perfect for tracking solar photovoltaic generation—and an automated safety circuit breaker. It features a dynamic HD color screen that transforms from a soft white backlight during normal operations to a sharp, flashing red warning state the moment its internal relay disconnects due to a grid fault.
Core Capabilities
- Bidirectional Solar & Grid Tracking: Accurately measures power flows in both directions, allowing you to monitor exactly how much energy you consume from the grid versus how much solar energy you feed back. [1]
- Visual Fault Indicator: Features a color-changing display that remains white during normal operation and flips to a vivid red state when the relay is disconnected, offering immediate physical troubleshooting. [1]
- Proactive Comprehensive Safeguards: Continuously protects complex multi-phase systems against voltage drops, surges, line overloads, phase failure, and distribution imbalance.
- Dynamic Backlight Management: Saves energy on your distribution board with an adjustable backlight timer that can be set to stay illuminated for up to 180 seconds upon physical interaction.
- Smart App Schedules: Built-in timer switches allow you to run automated countdowns, custom loops, or rigid schedule timers directly inside the application. [1]
Technical Specifications
Feature | Technical Specification |
|---|
| Model | PST-RMDZW-3P |
| Phase Configuration | 3-Phase 4-Wire (3P4W) |
| Maximum Current Limit | 100A (Adjustable range from 1.5A to 100A) |
| Over / Under Voltage Protection | Fully adjustable limits with automatic delay recovery |
| Current / Voltage Imbalance Protection | Protects motors and equipment against uneven phase loads |
| Phase Sequence & Shortage Phase Protection | Prevents motor reversal and system damage due to missing or swapped phases |
| Relay Control | Integrated physical internal relay switch |
| Time Control Modes | Timing, Countdown, and Cycle Time switches |
| Display Backlight Timer | Up to 180 seconds power-on interval |
| Visual Alarm Logic | White (Normal Status) / Red (Relay Disconnected Status) |
| Wireless Interface | 2.4GHz Wi-Fi Protocol (No external hub required) |
| App Support | Smart Life App / Tuya Smart App |
| Installation Mounting | 35mm Standard DIN Rail |
