标准摘要
[中文适用范围]： 本部分IEC 60079规定了用于爆炸性气体环境的保护类型为液体浸入"o"的Ex设备和Ex组件的设计、构造、测试和标记要求。 液体浸入"o"保护类型的Ex设备和Ex组件可以是： - 保护等级"ob"（EPL "Mb"或"Gb"） - 保护等级"oc"（EPL "Gc"） 对于保护等级"ob"，本标准适用于额定电压不超过11kV有效值交流或直流的情况。 对于保护等级"oc"，本标准适用于额定电压不超过15kV有效值交流或直流的情况。 此外，对于保护等级"oc"，当额定电压超过15kV交流有效值或直流且最高至245kV交流有效值或直流时，适用附录D。 附录D专门适用于液体浸入式变压器和电抗器，以及其他液体浸入式设备，如海上平台旋转装置、功率调节器、分接开关和接地/开关电阻。 注：更高电压的要求正在考虑中。 本标准补充并修改了IEC 60079-0的通用要求。当本标准的要求与IEC 60079-0的要求冲突时，以本标准的要求为准。 [外文原描述]： IEC 60079-6:2015+A1:2020 specifies the requirements for the design, construction, testing and marking of Ex Equipment and Ex Components with type of protection liquid immersion "o" intended for use in explosive gas atmospheres. Ex Equipment and Ex Components of type of protection liquid immersion "o" are either: - Level of Protection "ob" (EPL "Mb" or "Gb") or - Level of Protection "oc" (EPL "Gc"). For Level of Protection "ob", this standard applies where the rated voltage does not exceed 11 kV r.m.s. a.c. or d.c. For Level of Protection "oc", this standard applies where the rated voltage does not exceed 15 kV r.m.s. a.c. or d.c. This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. This fourth edition cancels and replaces the third edition, published in 2007. This edition constitutes a technical revision. The significant changes with respect to the previous edition are: - Edition 4 represents a major technical revision of the requirements for oil immersion "o" and should be considered as introducing all new requirements. The normal "Table of Significant Changes" has not been included for this reason. In particular: - The requirements for oil immersion "o" have been redefined into liquid immersion, levels of protection "ob" and "oc" as recommended by the responses to 31/715/DC; - The ability to protect sparking contacts has been added to both "ob" and "oc". Additional requirements have been introduced for the protective liquid. This consolidated version of the official IEC Standard and its amendment contains the fourth edition (2015) and its amendment 1 (2020). Therefore, no need to order amendments in addition to this publication. Keywords: Ex Equipment and Ex Components with type of protection liquid immersion "o"
英文名称Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o"