Low-voltage surge protective devices—Surge protective devices for specific application including d.c.—Part 31:Requirements and tests for SPDs in photovoltaic applications
Components for low-voltage surge protection—Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)
Components for low-voltage surge protective devices-Part 351:Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)