低压熔断器.第2部分:核准人员使用的熔断器补充要求(工业主体应用熔断器).熔断器A至K的标准化系统示例

[中文适用范围]： “供授权人员使用的熔断器通常设计用于@且只能由@授权人员更换熔断体的安装。根据以下熔断器系统供授权人员使用的熔断器还符合除非本标准中另有规定，否则符合 IEC 60269-1@ 相应子条款的要求。本标准分为熔断器系统@，每个熔断器系统涉及供授权人员使用的标准化熔断器的具体示例： 熔断器系统 A：带熔断体的熔断器带插片触头（NH 熔断器系统） 熔断器系统 B：带撞针熔断体的熔断器，带插片触头（NH 熔断器系统） 熔断器系统 C：熔断器导轨（NH 熔断器系统） 熔断器系统 D：用于母线安装的熔断器底座（NH 熔断器系统）熔断器系统 E： 熔断器带有用于螺栓连接的熔断体（BS 螺栓熔断器系统） 熔断器系统 F： 熔断器带有带圆柱形接触帽的熔断体（NF 圆柱形熔断器系统） 熔断器系统 G： 带有熔断体的熔断器偏置片状触点（BS 夹式熔断器系统） 熔断器系统 H：带有具有“gD”和“gN”特性的熔断体的熔断器（J 级和 L 级延时和非延时熔断器类型） 熔断器系统I：带有楔形紧固触点的 gU 熔断体 熔断器系统 J：带有具有“gD CC 级”和“gN CC 级”特性的熔断体的熔断器（CC 级延时和非延时熔断器类型） 熔断器系统 K：带刀片的 gK 熔断器，用于螺栓连接 ?C 高熔断器额定值，从 1 250 A 到 4 800 A（主熔断器） 注： 上述熔断器系统在安全方面是标准化系统。国家委员会可以从标准化熔断器的示例中选择一个或多个系统用于自己的标准。” [外文原描述]： IEC 60269-2:2013 provides supplementary requirements for fuses for use by authorized persons and are generally designed to be used in installations where the fuse-links are accessible to, and may be replaced by, authorized persons only. Fuses for use by authorized persons according to the following fuse systems also comply with the requirements of the corresponding subclauses of IEC 60269-1, unless otherwise defined in this standard. This standard is divided into fuse systems, each dealing with a specific example of standardized fuses for use by authorized persons: - Fuse system A: Fuses with fuse-links with blade contacts (NH fuse system), - Fuse system B: Fuses with striker fuse-links with blade contacts (NH fuse system), - Fuse system C: Fuse-rails (NH fuse system), - Fuse system D: Fuse-bases for busbar mounting (NH fuse system), - Fuse system E: Fuses with fuse-links for bolted connections (BS bolted fuse system), - Fuse system F: Fuses with fuse-links having cylindrical contact caps (NF cylindrical fuse system), - Fuse system G: Fuses with fuse-links with offset blade contacts (BS clip-in fuse system), - Fuse system H: Fuses with fuse-links having "gD" and "gN" characteristic (class J and class time delay and non time delay fuse types), - Fuse system I: gU fuse-links with wedge tightening contacts, - Fuse system J: Fuses with fuse-links having "gD class CC" and "gN class CC" characteristics (class CC time delay and non-time delay fuse types), - Fuse system K: gK fuse-links with blade for bolted connections - High fuse-link ratings from 1 250 A up to 4 800 A (master fuse-links). This fifth edition of IEC 60269-2 cancels and replaces the fourth edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: 1. fuse systems A and B: modified values for the power dissipation of NH aM fuse-links; 2. fuse systems A and B: introduction of dimension r for NH fuse-links; 3. addition of new fuse system K: gK fuse-links with contacts for bolted connections. Key Words: fuse systems A to K, requirements for fuses This publication is to be read in conjunction with IEC 60269-1:2006 .