Source: https://standards.globalspec.com/std/1536355/iec-61643-21
Timestamp: 2020-06-06 14:28:28
Document Index: 100795932

Matched Legal Cases: ['art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 24']

IEC 61643-21 - Low voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signalling networks – Performance requirements and testing methods | Engineering360
Low voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signalling networks – Performance requirements and testing methods
This International Standard is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages.
The purpose of these SPDs is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.
AMENDMENT 2 Low voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signalling networks – Performance requirements and testing methods
61643-21 AMD 1
AMENDMENT 1 Low voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signalling networks – Performance requirements and testing methods
CORRIGENDUM 1 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
ITU-T K.28 - Parameters of thyristor-based surge protective devices for the protection of telecommunication installations
This Recommendation applies to thyristor-based surge protective devices (SPDs) to be used for primary protection against surges due to lightning or power disturbances on telecommunication circuits,...
ITU-T K.44 - Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents – Basic Recommendation
CSA IEC 61400-24 - Wind turbines - Part 24: Lightning protection