REFUsol 50K-3T The power for mid-size PV plants Multi MPP-Tracking Separate connection area The completely new REFUsol inverter is developed for a maximum of flexibility in commercial and industrial PV systems. With three MPP trackers, each system design can be realized, including different orientations and tilts. Compact dimensions paired with a high power density per weight gives more installation location flexibility – on the rooftop or on ground mounted systems. With 50 kVA output power, it fits to any project size. The inverters can be connected on the same RS485 Bus for monitoring and Park Control applications without the need for reconfiguration. Therefore, the devices are also best suited for extending existing PV plants equipped with legacy REFUsol inverters. Surge protection devices type II are pre-equipped on the DC side for additional protection. Four digital inputs support the feed-in management (i.e. 0 %, 30 %, 60 %, 10 0%). The REFUlog monitoring portal comes for free with each inverter during the warranty period of 5 years. The Ethernet Stick for internet connection is supplied as standard, a WiFi Stick can be ordered

TECHNICAL DATA DC DATA Max. recommended PV power (kWp) Max. input voltage (V) Operating input voltage range (V) Start-up input voltage (V) Rated input voltage (V) Number of independent MPPT Number of DC inputs per MPPT Rated power MPPT voltage range (V) Max. short circuit current per MPPT (A) AC DATA Rated power (kW) Nominal grid voltage (V) Nominal grid frequency (Hz) Max output current (A) Total harmonic distortion (THD) (%) Adjustable power factor range AC Connection <3 0.8 inductive … 0.8 capacitive ring cable lugs (M8) EFFICIENCY DIAGRAM Rated Output Power

Weighted efficiency (EU/CEC) (%) Feed-in start power (W) MPPT efficiency Safety protection Anti-islanding, DC reverse polarity, Overtemperature, Overvoltage, Overcurrent, RCMU, ground fault protection String monitoring each MPPT String fuses Protection class / overvoltage category External environment pollution degree Max. inverter back-feed current to the array (A) Class I / DC: Type II standard, AC: Type III standard 3 < 6 mA Output short circuit current (A) Output inrush current (A) COMMUNICATION Digital inputs GENERAL DATA Ambient temperature range (°C) Topology Degree of protection Allowable...

SINGLE LINE DIAGRAM 1 DC switch 2 DC+ connectors 3 DC- connectors 4 Relay contact 5 RS 485 input cable gland 6 RS 485 output cable gland 7 Ethernet / WiFi / GPRS connector 8 AC cable gland 9 Anti-condensation valve 10 Fans 11 Wall mount PERFORMANCE DIAGRAMS No responsibility is taken for the correctness of this information. Subject to modification. REFU Elektronik GmbH | Marktstraße 185 | 72793 Pfullingen | Germany | Tel. +49 7121 4332-0 | Fax +49 7121 4332-140 | [email protected] | www.refu.com Output Power vs. Grid Voltage Output Power vs. Input V