What is the CT Trio - Smart Meter Accessory?
CT Trio - Smart Meter Accessory is a meter with current transformers (CT) that measures the energy flow at a three-phase grid connection point and passes this information to the inverter system via RS485. Its description emphasizes real-time monitoring of energy consumption and optimization of energy management.
The model type is Trio Smart Meter-CT DTSU666-CT. Instead of a direct-connected meter, it comes with three CTs rated 200 A / 5 A (1 m cable), a structure that makes it possible to measure on higher-current lines. Communication uses the Modbus-RTU protocol, and the accuracy class is C.
Technical specifications
| Property | Value |
|---|---|
| Model Type | Trio Smart Meter-CT DTSU666-CT |
| Interface | RS485 |
| Size | 100 x 72 x 65.5mm |
| Weight | 1.5 kg (3.3 lb) |
| Power Consumption | 1.5 W |
| Voltage / Current | 0,015-1.5(6)A (CT: 200A) |
| Operating Humidity | <75% non-condensing |
| Mounting System | DIN35 Rail |
| Power Grid Type | 3P4W/3P3W |
| Input Voltage (Phase Voltage) | 154Vac ~ 286Vac |
| Line Voltage | 290.5Vac ~ 539.5Vac |
| Phase Voltage | 168Vac ~ 312Vac |
| Accuracy Class | Class C |
| Baud Rate | 9,600 bps |
| Communication Protocol | Modbus-RTU |
| Operating Temperature Range | -10°C ~ +45°C |
| Storage Temperature Range | -25°C ~ +75°C |
| Accessories | 3 CT 200A/5A (1m) |
What projects is it suitable for?
The three-phase meter with CT is preferred in these cases:
- Commercial and industrial buildings with a high-current main panel entry
- Three-phase 4-wire or 3-wire (3P4W/3P3W) grid-connected installations
- Projects where energy drawn from the grid and energy fed into the grid are to be monitored separately
Use in Antalya and Solar Nexo support
In Antalya, the consumption of commercial buildings rises noticeably in summer because of air-conditioning load; a smart meter that measures at the main entry makes it possible to monitor solar production and consumption together. DIN35 rail mounting is done inside the panel, and the direction and phase sequence of the CTs must be connected correctly.
Solar Nexo handles meter mounting, CT direction and phase checks, and RS485 communication during installation. The product's datasheet can be downloaded from this page.
