IEC 60099-8-2011
电涌放电器.第8部分:高于1 kV的直流系统的高架输电和配电用带有外部串联火花间隙(EGLA)的金属氧化物电涌放电器

Surge arresters - Part 8: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a.c. systems above 1 kV

IEC 60099-8-2011 发布历史

This part of IEC 60099 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA) that are applied on overhead transmission and distribution lines, only to protect insulator assemblies from lightning-caused flashovers. This standard defines surge arresters to protect the insulator assembly from lightning-caused overvoltages only. Therefore, and since the metal-oxide resistors are not permanently connected to the line, the following items are not considered for this standard: ? switching impulse sparkover voltage; ? residual voltage at steep current and switching current impulse; ? thermal stability; ? long-duration current impulse withstand duty; ? power-frequency voltage versus time characteristics of an arrester; ? disconnector test; ? aging duties by power-frequency voltage. Considering the particular design concept and the special application on overhead transmission and distribution lines, some unique requirements and tests are introduced, such as the verification test for coordination between insulator withstand and EGLA protective level, the follow current interrupting test, mechanical load tests, etc. Designs with the EGLA's external series gap installed in parallel to an insulator are not covered by this standard.

IEC 60099-8-2011由国际电工委员会 IX-IEC 发布于 2011-01，并于 2011-01 实施。

IEC 60099-8-2011 在中国标准分类中归属于: K45 继电保护及自动装置。

IEC 60099-8-2011的历代版本如下：

• 2011年01月 IEC 60099-8-2011 电涌放电器.第8部分:高于1 kV的直流系统的高架输电和配电用带有外部串联火花间隙(EGLA)的金属氧化物电涌放电器
•  IEC 60099-8-2017 IEC 60099-8-2017

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标准号

IEC 60099-8-2011

发布日期

2011年01月

实施日期

2011年01月

废止日期

无

中国标准分类号

K45

国际标准分类号

29.240.10

发布单位

IX-IEC

代替标准

IEC 60099-8-2017

适用范围

This part of IEC 60099 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA) that are applied on overhead transmission and distribution lines, only to protect insulator assemblies from lightning-caused flashovers. This standard defines surge arresters to protect the insulator assembly from lightning-caused overvoltages only. Therefore, and since the metal-oxide resistors are not permanently connected to the line, the following items are not considered for this standard: ? switching impulse sparkover voltage; ? residual voltage at steep current and switching current impulse; ? thermal stability; ? long-duration current impulse withstand duty; ? power-frequency voltage versus time characteristics of an arrester; ? disconnector test; ? aging duties by power-frequency voltage. Considering the particular design concept and the special application on overhead transmission and distribution lines, some unique requirements and tests are introduced, such as the verification test for coordination between insulator withstand and EGLA protective level, the follow current interrupting test, mechanical load tests, etc. Designs with the EGLA's external series gap installed in parallel to an insulator are not covered by this standard.

IEC 60099-8-2011系列标准

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