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IECEE TRF 61643-21-5 Ed. 5.0 en:2021
This Test Report Form applies to: IEC 61643-21:2000, IEC 61643-21:2000/AMD1:2008, IEC 61643-21:2000/AMD2:2012
Low voltage surge protection devices- Part 21: Surge protective devices connected to telecommunications and signalling networks
International Electrotechnical Commission [iec]