This report provides field procedures for testing PV arrays for ground faults, and for implementing high-resolution ground fault and arc fault detectors in existing and new PV system designs. . Properly grounding solar PV systems is one of the most critical aspects of a safe and reliable installation, governed by Part V of NEC Article 690. This process involves two distinct but related concepts: system grounding, which connects current-carrying conductors to the earth for voltage. . This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www. In the event of a conflict between this manual and any code, the installer shall contact Solar F undations USA® supplied/specified. . Grounding (also known as earthing) is the process of physically connecting the metallic and exposed parts of a device to the earth. It is a mandatory practice required by NEC and IEC codes to protect both equipment and personnel from damage and electric shock hazards. This article covers grounding. . The typical electrical system of solar power plants consists of several PV panels forming an array size of capacity 1-2 MVA that are connected to a common DC collection point which is then inverted to low-voltage AC to be transformed via a step-up transformer to medium voltage (commonly 11-35 kV).
[PDF Version]
Menu
