Description

Used product. Three-phase REFUsol 017K photovoltaic inverter, Type 802R017, version AI-02, manufactured by REFU Elektronik GmbH and Made in Hungary. The photographed nameplate shows an AC power rating of 16,500 W, PV input up to 1000 V DC, and 3AC 400 V + N output. The nameplate data is consistent with the REFUsol 017K series documented by the manufacturer.

⚙️ Technical Specifications

• Type: 802R017 – REFUSOL 017K
• Tipo di inverter: ON-GRID / Grid-Tie
• Version: AI-02
• Phasing: 3-phase + N
• Rated AC power: 16,500 W
• Maximum AC power: 16,500 W
• MPPT: 1
• DC Voltage / MPP Range: 460–850 V DC
• DC Max Voltage: 1000 V DC
• DC Max Current: 37 A
• DC Max Current per input pair/triplet: 25 A
• AC Voltage: 3AC 400 V + N
• AC Frequency: 50/60 Hz
• AC Max Output Current: 3 × 29 A
• DC connections: 6 × MC4
• DC isolator: integrated
• Protection: IP65
• Operating temperature: −25…+55 °C
• Cooling: natural convection
• Interfaces: Ethernet / RS485

⚡ Function in the Photovoltaic System

The REFUsol 017K converts direct current from the photovoltaic field into three-phase alternating current for grid feed-in. The PV field operates within the nameplate range of 460–850 V DC, while the maximum permitted DC voltage is 1000 V. The output is 400 V AC three-phase + neutral, with a frequency of 50/60 Hz.

🔌 Inputs and Connections

The inverter has 6 DC connections and a single MPP Tracker system, with a maximum total current indicated on the nameplate of 37 A and a maximum of 25 A per input pair/triplet. The AC connection is L1, L2, L3, N, PE. Documentation for the series also indicates Ethernet and RS485 for communication and monitoring.

⚠️ Main Faults and Diagnostics

Important issues in the REFUsol series include grid overvoltage or undervoltage, frequency faults, problems with DC/DC and DC-Link circuit regulation, PV field insulation faults, residual current/RCD faults, power section overheating, internal communication errors, and relay or transducer faults. The system features diagnostics and event memory to identify the type of fault.

🏭 Construction and Installation

Professional photovoltaic inverter with IP65 housing, natural convection cooling, and specified operation between −25 and +55 °C. The technical documentation also indicates internal Type 3 surge protection and DC II / AC III overvoltage category.

🛡️ Safety and Product Condition

Used product. Normal signs of use and installation are visible on the nameplate and housing. The unit is not declared functional based solely on visual inspection. Attention: the device can operate with voltages up to 1000 V DC and 400 V AC three-phase; any inspection or intervention must be carried out by qualified personnel.

📦 Package Contents

1 × REFUsol 017K – Type 802R017 – AI-02, as shown in the photographs.

🚀 Final Description

REFUsol 017K 802R017, professional 16.5 kW three-phase photovoltaic inverter, with 1 MPPT, 460–850 V DC input range, 1000 V DC maximum voltage, 37 A maximum DC current, and 3AC 400 V + N / 50–60 Hz output, with maximum current of 3 × 29 A. Equipped with 6 DC connections, DC isolator, IP65, Ethernet, and RS485. AI-02 model, Made in Hungary, suitable as a replacement or for compatible installations.