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Overview EN 61643-351:2017 (identical to IEC 61643-351:2016) specifies performance requirements and test methods for surge isolation transformers (SITs) used in telecommunications and signalling netw…
Overview EN 61643-351:2017 (identical to IEC 61643-351:2016) specifies performance requirements and test methods for surge isolation transformers (SITs) used in telecommunications and signalling netw…
What is BS EN 61643-351 - Components for low-voltage surge protective devices about? BS EN 61643 is a series on components for low-voltage surge protective devices. Components for low-voltage surge p…