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6 Electrical ConnectionSMA Solar Technology AG <br />Installation Manual SBxx-1SP-US-41-IA-xx-12 47 <br />COM DC-in SPS AC-out <br />D-IN SPS A B <br />M1 X1 X2 M2 <br />ANT. <br />FCC ID: SVF-KP20IC: 9440A-KP20 <br />Max. 30V DC <br />DISPLAY <br />BAT MFR USB <br />COM <br />DC-in <br />A+ B+ C+ A− B− C− <br />+_+_ <br />Sunny Boy 3.0-US / 3.8-US Sunny Boy 5.0-US / 6.0-US / 7.0-US / 7.7-US <br />COM DC-in SPSAC-out <br />D-IN SPSA B <br />M1 X1 X2 M2 <br />ANT. <br />FCC ID: SVF-KP20IC: 9440A-KP20 <br />Max. 30V DC <br />DISPLAY <br />BAT MFR USB <br />COM <br />DC-in <br />A+ B+ C+ A− B− C− <br />+_+_+_ <br />Figure 12 : Connection overview for normal operation <br />COM DC-in SPSAC-out <br />D-IN SPSA B <br />M1 X1 X2 M2 <br />ANT. <br />FCC ID: SVF-KP20IC: 9440A-KP20 <br />Max. 30V DC <br />DISPLAY <br />BAT MFR USB <br />COM <br />DC-in <br />A+ B+ C+ A− B− C− <br />+_+_+_+_ <br />COM DC-in SPS AC-out <br />D-IN SPS A B <br />M1 X1 X2 M2 <br />ANT. <br />FCC ID: SVF-KP20IC: 9440A-KP20 <br />Max. 30V DC <br />DISPLAY <br />BAT MFR USB <br />COM <br />DC-in <br />A+ B+ C+ A− B− C− <br />+_+_+_ <br />Sunny Boy 3.0-US / 3.8-US Sunny Boy 5.0-US / 6.0-US / 7.0-US / 7.7-US <br />Figure 13 : Connection overview for parallel connection of the DC inputs A and B <br />Requirements for the PV modules per input: <br />☐ All PV modules should be of the same type. <br />☐ All PV modules should be aligned and tilted identically. <br />☐ If inputs A and B are connected in parallel, the PV modules of inputs A and B should be <br />identically aligned and the same number of PV modules connected in series must be <br />connected to all strings of inputs A and B. <br />☐ The maximum inverter system voltages permitted may not be exceeded (see Section 10 <br />"Technical Data", page 65). <br />☐ The maximum short-circuit current may not be exceeded (see Section 10 "Technical Data", <br />page 65). <br />☐ The positive connection cables of the PV modules must be equipped with positive DC <br />connectors Assembling the DC Connectors. <br />EN <br />G <br />L <br />I <br />S <br />H <br />534 S Sycamore St <br />- 10110979707/01/22