Eaton Power Xpert Solar 1500 User Manua

Electrical ConnectionsPower Xpert Solar 1500/1670 kW Inverter MN141001EN—October 2014 www.eaton.com 21DC Circuit ConnectionThe DC inputs to the Power Xpert Solar are designed forgrounded PV systems. The photovoltaic system’s positive,negative, and equipment-ground conductors terminate in theinverter’s DC section as illustrated in Figure 18. The NECdefines these as the inverter’s input circuits. DC and PV areoften used interchangeably, referring to the photovoltaic DCvoltage and amperage. This is a central inverter, requiringexternal source combiners and disconnects.Figure 18. PV Conductor Terminations (Typical)—Positive and Negative ConnectionsTable 7. Fasteners and Sequence for Conductor TerminationIllustrationItem Number Description Number/Bolt Comments1 Busbar Provided PV Grounded Conductor bus2 Compression Lug 1 Not provided.Use only UL-approved compression type ring-terminal lugs as approved for theconductor material and voltage.Select Lugs having connector barrels prefilled with Penetrox™ or equivalent.3 Flat Washer 2 Not provided, use Grade 5, minimum.4 Washer (Belleville) 1 Not provided, use only Belleville from:Fastenal/Rolex5/16 = p/n SP-1884203/8 = p/n SP-2311201/2 = p/n SP-2913255 Nut 1 Not provided, use Grade 5, minimum6 1/2, 3/8, or 5/16 Grade 5 Bolt, typ. asper location and compression lug1 Not provided, use Grade 5, minimum14 63 25