REFU 801 Series Operating Instructions Manual

Also see for 801 Series: Operating instructions

REFU 801 Series Operating Instructions Manual Manual pdf 24 page image

REFUone 3K-2T, 5K-2T, 7K-2T244.3 Connecting DC Input Power Cables The REFUone 3K-2T … 7K-2T has 2 MPP Trackers. The MPPT 1 and MPPT 2input is marked with PV1 and PV2 respectively at the connectors. The maximum power for each MPPT is limited (see chapter 8.1 DC Data)!If you want to use the full power of the inverter, both inputs need to beconnected. If you want to use one string of solar panels only, you need to connect it toboth inputs PV1 and PV2 in parallel, and set the inverter input mode to“parallel mode” (see chapter 6.3 Main Interface at (A) 9. Set Input mode).AttentionCorrect string connections with 1 String on 3K/5K-2T, and 2 Strings on 7K-2TTable 3 Recommended DC input cable specificationsCross-Sectional Area (mm2)External Cable Diameter (mm)Range Recommended Value4.0 … 6.0 4.0 4.5 … 7.8ProcedureStep 1 Remove cable glands from the positive and negative connectors.Step 2 Remove the insulation layer with an appropriate length from the positive and negativepower cables by using a wire stripper as show in Figure 24.REFUone 3K/5K-2T1 String - correct1 to 2 AdapterPV 1PV 2MPPT 2 MPPT 1...REFUone 7K-2T2 Strings - correctPV 1PV 1PV 2MPPT 1MPPT 2......