标准摘要
[中文适用范围]： 本部分的目的是作为IEC 60077-2给出的规则的补充，为高压（HV）熔断器提供额外或修订的规则。所涉及的高压熔断器是连接到电力和/或辅助电路的。根据IEC 60077-850，这些电路的标称电压在600 V DC至3 000 V DC之间。这些熔断器也可用于标称电压高达1 500 V的辅助交流电路。本文档连同IEC 60077-2具体规定了：a) 熔断器的特性；b) 熔断器在以下方面符合的服务条件：正常运行时的操作和行为；短路时的操作和行为；介电性能。c) 旨在确认熔断器在服务条件下符合特性的试验及其所采用的方法；d) 熔断器上标记或提供的信息。本文档不涵盖熔断器的并联连接。 [外文原描述]： IEC 60077-5:2019 give additional or amended rules for high voltage (HV) fuses as a supplement to those given by IEC 60077-2. The high voltage fuses concerned are those connected into power and/or auxiliary circuits. The nominal voltage of these circuits lies between 600 V DC and 3 000 V DC, according to IEC 60850. These fuses can also be used in auxiliary AC circuits up to a nominal voltage of 1 500 V. This document together with IEC 60077-2 states specifically: a) the characteristics of the fuses; b) the service conditions with which the fuses comply with reference to: - operation and behaviour in normal service; - operation and behaviour in case of short circuit; - dielectric properties. c) the tests intended for confirming the compliance of the fuse with the characteristics under the service conditions and the methods adopted for these tests; d) the information marked on, or given with, the fuse. This second edition cancels and replaces the first edition, issued in 2003. This edition includes the following main technical changes with regard to the previous edition: a) test method of test duty III for verification of breaking capacity is reviewed.
英文名称Railway applications - Electric equipment for rolling stock - Part 5: Electrotechnical components - Rules for HV fuses