小型熔断器.第7部分:特殊应用的小型熔断器

[中文适用范围]： IEC 60127 的这一部分涵盖了特殊应用的微型熔断体的要求。 IEC 60127的本部分适用于额定电压不超过1000V、额定电流不超过20A、额定分断能力不超过50kA的熔断体。它不适用于 IEC 60269-1 后续部分完全涵盖的熔断器。它不适用于在特殊条件下使用的器具的微型熔断器，例如在腐蚀性或爆炸性环境中。除 IEC 60127-1 的要求外，IEC 60127 的本部分也适用。用于特殊应用的微型熔断体不适合由电气/电子设备的最终用户更换。 IEC 60127 本部分的目的是为特殊应用的微型熔断体建立统一的测试方法，以便验证制造商指定的值（例如熔化时间和分断能力值）。 [外文原描述]： IEC 60127-7:2015 covers requirements for miniature fuse-links for special applications. This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA. It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1. It does not apply to miniature fuse-links for appliances intended to be used under special conditions, such as in corrosive or explosive atmospheres. This part of IEC 60127 applies in addition to the requirements of IEC 60127-1. Miniature fuse-links for special applications are not intended to be replaced by the end-user of an electrical/electronic appliance. The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse-links for special applications, so as to allow verification of the values (for example melting time and breaking capacity values) specified by the manufacturer. This second edition cancels and replaces the first edition published in 2013. This edition includes the following significant technical changes with respect to the previous edition: - defining a test board for surface mount fuse-links, Figure 2; - defining test schedules for homogenous series. This publication is to be read in conjunction with IEC 60127-1:2006 . Keywords: fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA.