爆炸性环境.第15部分:防护类型“n”的设备防护

[中文适用范围]： 本部分 IEC 60079 规定了用于爆炸性气体环境的 II 类电气设备"n"型保护的结构、测试和标记要求，包括：密封装置"nC"、气密密封装置"nC"、非点燃元件"nC"和限制呼吸外壳"nR"。本部分 IEC 60079 适用于额定输入电压不超过 15 kV 交流或直流的电气设备，包括 Ex 产品的内部工作电压超过 15 kV 的情况，例如 HID 灯具的启动器。本部分 IEC 60079 适用于非火花电气设备，也适用于具有产生电弧或火花或具有热表面的部件或电路的电气设备，如果未按照本标准的指定方式保护，可能会点燃周围的爆炸性气体环境。本标准描述了实现这一目标的几种不同方法，这些方法可以与 IEC-80079-0 中描述的其他方法结合使用。本部分 IEC 60079 补充和修改了 IEC 60079-0 的一般要求，除非表 1 中另有说明。如果本部分 IEC 60079 的要求与 IEC 60079-0 的要求冲突，则以本部分 IEC 60079 的要求为准。 [外文原描述]： IEC 60079-15:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60079-15:2017 specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection “n” which includes; sealed devices “nC”, hermetically sealed devices “nC”, non-incendive components “nC” and restricted breathing enclosures “nR” intended for use in explosive gas atmospheres. This part of IEC 60079 applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires. This part of IEC 60079 supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1 (Clause 1). Where a requirement of this part of IEC 60079 conflicts with a requirement of IEC 60079-0, the requirement of this part of IEC 60079 takes precedence. This fifth edition cancels and replaces the fourth edition, published in 2010, and constitutes a technical revision. Refer to the Forward of the document for a complete listing of the technical changes between edition 5.0 and the previous edition of the document. Keywords: Group II electrical equipment with type of protection “n”