标准摘要
[中文适用范围]： IEC 61643的这一部分适用于电信、信号和低压配电网络中用于过压保护的气体放电管（GDT），标称系统电压高达1000V（rms）交流和1500V直流。它们是定义为一个间隙或多个间隙，其中两个或三个金属电极气密密封，以便气体混合物和压力受到控制。它们旨在保护设备或人员或两者免受高瞬态电压的影响。该标准包含一系列用于确定具有两个或三个电极的GDT的电气特性的测试标准、测试方法和测试电路。该标准没有规定适用于完整的电涌保护装置的要求，也没有规定电子设备中使用的 GDT 的总体要求，其中 GDT 性能和电涌保护装置耐受能力之间的精确协调非常关键。 [外文原描述]： IEC 61643-311:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c..They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. This second edition of IEC 61643-311 cancels and replaces the first edition published in 2001. It constitutes a technical revision. Specific changes with respect to the previous edition are: Addition of performance values. Key words: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.
英文名称Components for low-voltage surge protective devices - Part 311: Performance requirements and test circuits for gas discharge tubes (GDT)