标准摘要
[中文适用范围]： IEC 60947 的这一部分规定了具有 PE 功能的保护导体端子块的要求，最大长度为 120 mm？ (250 kcmil) 以及具有等于或大于 10 mm 的 PEN 功能的保护导体端子块？ (AWG 8) 带有螺钉型或无螺钉型夹紧装置@，主要用于工业应用。注意 AWG 是“American Wire Gage”的缩写。 [表压 (美国) = 表压 (英国)]kcmil = 1000 cmil1 cmil = 1 圆 mil = 直径为 1 mil 的圆的表面1 mil = 1/1000 英寸保护导体端子块用于形成之间的电气和机械连接铜导体和固定支架。它适用于保护导体接线端子，用于连接横截面在 0@2 mm 之间的经过或不经过特殊处理的圆形铜导体。和120毫米？ （AWG 24 和 250 kcmil）@ 用于额定电压不超过 1 000 V 交流电至 1 000 Hz 或 1 500 V 直流电的电路@ 最常见的是与符合 IEC 60947-7-1 的端子块结合使用.这个标准可以作为指导吗？需要将特殊装置固定到导体上的保护性导体端子块，例如快速连接端子或缠绕连接等；？保护性导体端子块通过穿透绝缘层的边缘或点提供与导体的直接接触@例如绝缘位移连接@等。在本标准中适用的地方@术语“夹紧单元”已被用来代替术语“终端”。在引用 IEC 60947-1 时要考虑这一点。 [外文原描述]： IEC 60947-7-2:2009 specifies requirements for protective conductor terminal blocks with PE function up to 120 mm2 (250 kcmil) and for protective conductor terminal blocks with PEN function equal to and above 10 mm2 (AWG 8) with screw-type or screwless-type clamping units, primarily intended for industrial applications. Protective conductor terminal blocks are used to form the electrical and mechanical connection between copper conductors and the fixing support. lt is applicable to protective conductor terminal blocks for the connection of round copper conductors with or without special preparation having a cross-section between 0,2 mm2 and 120 mm2 (AWG 24 and 250 kcmil), intended to be used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c., most commonly in conjunction with terminal blocks according to IEC 60947-7-1. This standard may be used as guide for - protective conductor terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.; - protective conductor terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example insulation displacement connections, etc. Where applicable in this standard, the term "clamping unit" has been used instead of the term "terminal". This is taken into account in case of reference to IEC 60947-1. The main technical modifications of this standard since this previous publication are listed below: - requirements for tightening torques for the tests improved and referenced to Table 4 of IEC 60947-1, Annex B deleted; - the wording of the short-time withstand current test improved in 8.4.6. This publication shall be read in conjunction with IEC 60947-1:2007 and IEC 60947-7-1:2009 .
英文名称Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors