易爆环境.第15部分:"n"防护型电气设备保护

[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类电气设备的结构、试验和标志要求，保护类型为“n”，包括密封装置“nC”、气密封装置“nC”、非易燃组件“nC”和限制呼吸外壳“nR”。本部分适用于额定输入电压不超过15 kV交流或直流的电气设备，包括内部工作电压超过15 kV的防爆产品，例如HID灯具的启动器。本部分补充和修改了IEC 60079-0的一般要求，除非表1中另有说明。如果本部分的要求与IEC 60079-0的要求发生冲突，则以本部分的要求为准。 [外文原描述]： 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”