This report describes testing conducted at NREL to determine the duration and magnitude of transient overvoltages created by several commercial PV inverters during ground fault conditions. In addition, effective grounding does not mitigate overvoltage mechanisms t t do occur with inverters, and grounding of inverters can have detrimental impacts on inverter perf G ne to Ground. . The purpose of this Technical Note is to describe proper protection of SolarEdge products in the field from overvoltage surges caused by lightning strikes, grid overvoltage events and ground faults. Additional partners in this effort include the Hawaiian Electric Companies. . plays a major role. During overcurrent situations, switching devices are vulnera le to damage. Overheating of the chip is a common cause for the destruction of power switches. If the inverter malfunctions due to overloading or short-circuiting, this kind of failure occurs.
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