Operators and managers of large photovoltaic plants face two daily challenges: keeping the installation at the highest PR possible, and achieving the least possible impact on the grid in the event of an alarm due to an insulation fault. To succeed, am effective tool is the ISOSCAN® EDS3096PV portable fault locator. This device allows the user to detect both the main output string circuit of the affected inverter, the secondary string downstream of the combiner box, and the particular component that generated the fault condition within that circuit. With this device, fault location can be done fairly quickly (typically a few hours) and does not involve disconnecting the system for fault location, thus not affecting power generation.
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