Description

Used product. Three-phase REFUsol 013K photovoltaic inverter, model 802R013, manufactured by REFU Elektronik GmbH in Germany. It is a string inverter for photovoltaic systems with 3AC 400 V + N output, rated/maximum power of 12,400 W, and a single MPP tracker. The correspondence between 802R013 and REFUsol 013K is also confirmed by REFUsol compliance documentation.
The photographed unit features the characteristic red REFU SOL housing, front display, and lower connection compartment with DC disconnect switch, PV inputs, AC connections, RS485, relay, and sensor connections.

⚙️ Technical Specifications

• Manufacturer: REFU Elektronik GmbH – Germany
• Tipo: ON-GRID / Grid-Tie
• Phasing: 3-fase + N
• Potenza: 19,2 kW
• MPPT: 1
• DC Voltage: 480–850 V DC
• DC Max Voltage: 1000 V DC
• AC Voltage: 3AC 400 V + N
• Frequenza: 50/60 Hz
  
• Model: REFUsol 013K
• Type: 802R013
• Visible revision: AI-05
• Rated AC power: 12,400 W / 12.4 kW
• Maximum AC power: 12,400 W
• Grid voltage: 3AC 400 V + N
• Frequency: 50/60 Hz
• Maximum AC current: 3 × 18 A
• Maximum DC voltage: 1000 V
• MPPT range: 420–850 V
• Maximum total DC current: 30 A
• Maximum current per input/pair: 25 A
• Number of MPPTs: 1
• DC connections: 4 × MC4
• Integrated DC disconnect switch
• Internal Type 3 surge protection
• Maximum efficiency: approx. 98%
• European efficiency: approx. 97.5%
• Cooling: natural convection
• Operating temperature: −25…+55 °C
• Protection rating: IP65
• Interfaces: Ethernet and RS485
• Noise level: <45 dBA
  The technical documentation also indicates a recommended maximum PV power of approximately 13.9 kWp for the REFUsol 013K.

⚡ Function in the Photovoltaic System

The REFUsol 013K converts direct current from the photovoltaic modules into three-phase 400 V + N alternating current, synchronized with the electrical grid.
The system features one MPP tracker, which searches for the maximum power point of the photovoltaic field. The 420–850 VDC MPPT range must be respected when designing and connecting the strings.
The lower front section includes the DC disconnect switch, + / − photovoltaic field inputs, L1/L2/L3/N grid connections, RS485 IN/OUT ports, and relay and sensor connections.

🔌 Connections and Installation

The inverter is designed for three-phase photovoltaic installations and features:

• 4 MC4 inputs on the DC side
• Integrated DC disconnect switch
• L1-L2-L3-N AC connection
• RS485 communication
• Ethernet interface
• Dedicated relay and sensor connections
  The system uses natural cooling, without fans, and the housing is designed for outdoor installation with IP65 protection when correctly assembled.

🛡️ Safety and Condition

Used product, with normal signs of previous installation, dust, and traces of use visible on the housing and lower section.
Functionality is not declared if the inverter has not undergone complete testing. Before selling it as fully operational equipment, it is advisable to verify at least startup, DC voltage, MPPT tracking, three-phase output, communication, and absence of alarms.
Attention: the component operates with voltages up to 1000 VDC and a 400 VAC three-phase grid. Installation, opening, and inspection must be carried out exclusively by qualified personnel.

📦 Package Contents

1 × REFUsol 013K – 802R013 photovoltaic inverter, complete with housing, display, and connection components visible in the photographs.

🚀 Final Description

REFUsol 013K 802R013 – 12.4 kW three-phase photovoltaic inverter, original REFU Elektronik, with 1000 VDC maximum voltage, 420–850 V MPPT, 30 A maximum DC, 4 MC4 inputs, 1 MPPT, 3AC 400 V + N output, 3 × 18 A, efficiency up to 98%, integrated DC disconnect switch, Ethernet, and RS485. It is an inverter from an earlier generation, particularly suitable as a replacement for existing REFUsol installations or for component recovery. The technical documentation identifies model 802R013 as the 12,400 W REFUsol 013K.