IEC 61643-22:20 15描述了连接到标称系统电压高达1 000 V r.m.s.的电信和信号网络的SPD的选择、操作、位置和协调原则。a.c.和1500V直流电。该标准还涉及在同一外壳中包含信号线和电源线保护的SPD（所谓的多业务SPD）。这第二版取消并取代了2004年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -更新多业务SPD的使用（第8条）； -IEC 61643-11和IEC 61643-21（7.3.3）的SPD分类之间的比较； -考虑将新的传输系统作为PoE（附件F）； -SPD的EMC要求（附录G）； -SPD的维护周期（附件I）。 关键词:SPD,浪涌保护器件

IEC 61643-22:2015 describes the principles for the selection, operation, location and coordination of SPDs connected to telecommunication and signalling networks with nominal system voltages up to 1 000 V r.m.s. a.c. and 1 500 V d.c. This standard also addresses SPDs that incorporate protection for signalling lines and power lines in the same enclosure (so called multiservice SPDs). This second edition cancels and replaces the first edition published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Update the use of multiservice SPDs (Article 8);
- Comparison between SPD classification of IEC 61643-11 and IEC 61643-21 (7.3.3);
- Consideration of new transmission systems as PoE (Annex F);
- EMC requirements of SPDs (Annex G);
- Maintenance cycles of SPDs (Annex I). Keywords: SPD, surge protective devices