📝 Description

Used product. Professional Power-One Aurora TRIO-27.6-TL-OUTD-S2X-400 photovoltaic inverter, manufactured in Italy, belonging to the TRIO series for commercial and industrial applications. It is a three-phase ON-GRID / Grid-Tie, transformerless inverter with 2 independent MPPTs, designed for Outdoor & Indoor installation and equipped with an IP65 enclosure. The S2X version integrates DC isolator, string fuses, and surge protection.

⚙️ Technical Specifications

• Type: ON-GRID / Grid-Tie
• Phasing: 3-phase + N + PE
• Power: 27.6 kW AC
• MPPT: 2 independent
• DC Voltage: 200–950 V DC
• DC Full Power Voltage: 500–800 V DC
• DC Max Voltage: 1000 V DC
• DC Max Current: 2 × 32 A / 64 A total
• AC Voltage: 400 V AC three-phase
• Frequency: 50 Hz on the nameplate; grid configuration depends on the country
• AC Max Current: 45 A
• Nominal DC Power: 28.6 kWp
• Maximum DC Power: approx. 31 kWp
• MPPT: up to 5 pairs of DC inputs per MPPT
• Installation: Outdoor & Indoor
• Protection Rating: IP65
• Operating Temperature: −25…+60 °C
• Cooling: natural
• Technology: transformerless

☀️ Photovoltaic Input and MPPT

The TRIO 27.6 features two independent MPPT trackers, particularly suitable for managing two PV sub-fields with different orientations or operating conditions. The MPPT range is 200–950 V DC, while the indicated full-power operating range is 500–800 V DC. The absolute maximum DC voltage is 1000 V. Each MPPT can handle up to 32 A, with a maximum short-circuit current of 40 A. The S2X version features 5 pairs of DC connections per MPPT.

⚡ AC Output and Operation

The inverter converts the DC energy from the photovoltaic field into 400 V three-phase AC, intended for feed-in to the electrical grid. The nominal power is 27,600 W at 45 °C ambient temperature, with a maximum AC current of 45 A. The technical documentation indicates a maximum AC power of up to approximately 30 kW, depending on operating conditions and grid configuration.

🔧 S2X Version – Equipment

The S2X designation identifies a complete configuration with DC isolator, string fuses, and DC-side surge protection devices. The manual indicates for this version a 40 A / 1000 V isolator, 12 A / 1000 V fuses, and Class II surge protection for each MPPT.

🏭 Installation and Construction

The OUTD model is specifically designed for outdoor as well as indoor installations, with an IP65 enclosure. Cooling is by natural convection and the system is designed for wall mounting. The series documentation indicates dimensions of approximately 1060 × 751 × 291 mm and a weight in the region of 75 kg for the TRIO-27.6 model.

📋 Visible Product Markings

The photographed nameplate shows:

• Power-One / Aurora
• Model: TRIO-27.6-TL-OUTD-S2X-400
• VDC max: 1000 V
• VDC MPP: 200–950 V
• VDC MPP Full Power: 500–800 V
• IDC max: 2 × 32 A
• VAC nom: 400 V 3Ø, 3W + N + PE
• f nom: 50 Hz
• PAC nom: 27,600 W @ 45 °C amb.
• IAC max: 45 A
• IP65
• −25…+60 °C
• Made in Italy
• P/N: YVD.VOL26.0
• WK: 40/12

⚠️ Main Faults and Diagnostics

On this inverter family, faults may mainly concern AC grid, DC voltage and current, PV field insulation, residual current/GFI, temperature, communication, and the power section. The front display allows the inverter status and alarms to be viewed. Correct diagnosis requires using the documentation corresponding to the specific version and configured grid code.

🛡️ Safety and Product Condition

Used product. Normal signs of use and installation are present on the enclosure. Functionality is not declared based solely on the photographs. The device operates with voltages up to 1000 V DC and 400 V three-phase AC; before any intervention, the disconnection and discharge procedures specified by the manufacturer must be followed. The nameplate also indicates that 10 minutes must be allowed before working on the equipment.

📦 Package Contents

1 × Power-One Aurora TRIO-27.6-TL-OUTD-S2X-400, version with DC isolator, fuses, and DC-side protection, as shown in the photographs.

🚀 Final Description

Power-One Aurora TRIO-27.6-TL-OUTD-S2X-400, 27.6 kW three-phase ON-GRID / Grid-Tie photovoltaic inverter, with 2 independent MPPTs, 200–950 V DC input, 1000 V DC maximum voltage, 500–800 V DC full-power operation, maximum current of 2 × 32 A, 400 V three-phase + N + PE output, 45 A maximum AC current, and IP65 protection. The S2X version integrates DC isolator, string fuses, and surge protection, and is suitable for Outdoor & Indoor installation. It is a professional string inverter for commercial and industrial photovoltaic systems, not hybrid and not off-grid.