前言这是低压开关设备和控制设备的协调ANCE、CSA集团和UL标准——第7-2部分:辅助设备——铜导线的保护导体接线板。它是NMX-J-538/7-2-ANCE的第一版，CAN/CSA第60947-7-2号的第一版，以及UL 60947-7-2的第四版。本版UL 60947-7-2取代2011年5月6日发布的前一版。本协调标准基于IEC出版物60947-7-2:第2版（2002），低压开关设备和控制设备-第7-2部分:辅助设备- 铜导体的保护导体接线板。IEC 60947-7-2受IEC版权保护。范围IEC 60947的本部分规定了主要用于工业应用的PE功能不超过120 mm2（250 kcmil）的保护导体端子块和PEN功能大于等于10 mm2（AWG 8）的保护导体端子块（带螺钉式或无螺钉式夹紧装置）的要求。注:AWG是“美国线规”的缩写[Gage（US）=Gage（UK）]kcmil=1000 cmil 1 cmil=1圆形mil=直径为1 mil的圆表面1 mil=1/1000 in保护导体端子块用于在铜导体和固定支架之间形成电气和机械连接。 它适用于连接圆形铜导线的保护导体接线板，无论是否经过特殊处理，其横截面在0.2 mm2和120 mm2（AWG 24和250 kcmil）之间，用于额定电压不超过1000 V a.c.到1000 Hz或1500 V d.c.的电路中。，通常与符合IEC 60947-7-1的接线板结合使用。1.1DV。1 D2对第1.1条的修改:将“0.2 mm2和120 mm2（AWG 24和250 kcmil）”替换为“0.1 mm2和120 mm2（AWG 30和250 kcmil）”。1.1DV。2.通过添加以下内容进行D2修改: 本标准适用于绝缘位移端子。1.1DV。3.通过添加以下内容进行DR修改:不允许使用带PEN功能的接线板。本标准可作为保护导体端子块的指南，该端子块需要将特殊装置固定到导体上，例如快速连接终端或缠绕连接等通过穿过绝缘层的边缘或点与导体直接接触的保护导体端子块，例如绝缘位移连接等。在本标准中适用的情况下，使用术语“夹紧装置”代替术语“端子”。 在参考IEC 60947-1时，应考虑到这一点。1.1DV。4 D2修改，增加以下内容:本标准也适用于具有绝缘穿孔或位移夹紧装置的接线板。1.1DV。5 D2修改，增加以下内容:本标准规定了PE功能高达120 mm2（250 kcmil）的保护导体端子块和PEN功能大于等于10 mm2（AWG 8）的保护导体端子块的要求，该端子块带有螺钉式或无螺钉式夹紧装置，主要用于工业应用，根据附录DVA第1项的附录DVB，国家电气规范，NFPA 70（美国使用），CSA C22。 1-15《加拿大电气规范》第一部分（供加拿大使用），或NOM-001-SEDE《电气装置（公用设施）》（供墨西哥使用）。

PrefaceThis is the harmonized ANCE, CSA Group, and UL standard for Low-Voltage Switchgear and Controlgear - Part 7-2: Ancillary Equipment - Protective Conductor Terminal Blocks for Copper Conductors. It is the first edition of NMX-J-538/7-2-ANCE, the first edition of CAN/CSA No. 60947-7-2, and the fourth edition of UL 60947-7-2. This edition of UL 60947-7-2 supersedes the previous edition(s) published on May 6, 2011. This harmonized standard is based on IEC Publication 60947-7-2: Edition 2 (2002), Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors. IEC 60947-7-2 is copyrighted by the IEC.ScopeThis part of IEC 60947 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. NOTE: AWG is the abbreviation of "American Wire Gage" [Gage (US) = Gauge (UK)] kcmil = 1000 cmil 1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil 1 mil = 1/1000 inch 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. 1.1DV.1 D2 Modification of Clause 1.1: Replace "0,2 mm2 and 120 mm2 (AWG 24 and 250 kcmil)" with "0,1 mm2 and 120 mm2 (AWG 30 and 250 kcmil)". 1.1DV.2 D2 Modification by adding the following: This standard applies to insulation displacement terminals. 1.1DV.3 DR Modification by adding the following: Terminal blocks with PEN function are not permitted. 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. 1.1DV.4 D2 Modification by adding the following: This standard also applies to terminal blocks that have insulation piercing or displacement clamping units. 1.1DV.5 D2 Modification by adding the following: This standard 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, in accordance with Annex DVB of item 1 in Annex DVA, National Electrical Code, NFPA 70 (for use in the USA), CSA C22.1-15 Canadian Electrical Code, Part I (for use in Canada), or NOM- 001-SEDE, Electrical Installations (Utility) [for use in Mexico].