Manufacturers must calculate and rigorously test the input short-circuit withstand strength.
One of the most dangerous events in medium-voltage equipment is an internal arc fault. IEC 62477-2 provides guidelines on how to contain or vent the explosive energy of an arc to protect personnel. Why You Need the IEC 62477-2 PDF Iec 62477-2 Pdf
Renewable converters often have power from both the grid and the PV array. Clause 4.2 requires that opening one disconnect does not make the system safe. A second disconnect (e.g., DC switch on the PV side) must be labeled. Many products fail this during construction review. Manufacturers must calculate and rigorously test the input
Adhering to the latest version of the standard protects manufacturers from legal liabilities by proving they followed recognized international safety benchmarks. Summary of Applications Why You Need the IEC 62477-2 PDF Renewable