前言:这是CSA C68的第三版。10.商用和工业用屏蔽电力电缆，5–46 kV。它取代了2014年和2008年出版的之前版本。本标准第一版取代了CAN/CSA-C68中规定的商业和工业装置中屏蔽电力电缆的要求。3.额定电压为5–46 kV的屏蔽和同心中性电力电缆。CSA C68系列中的相关标准CSA C68。5.规定了电力设施使用的屏蔽和同心中性电缆的应用要求。本标准最初改编自NEMA WC 74/ICEA S-93-639。CSA集团衷心感谢绝缘电缆工程师协会（ICEA）的合作及其成员的贡献。本版本中包含的主要修订内容包括:a）更新的参考出版物（第2条）；b） 删除XLPE和TRXLPE说明中的“填充或未填充”（第6条。 1.1));c） 阐明EPR的四种分类（第6.1.1条）；d） 删除了CSA C22中的试验方法参考。2号0.3，并替换为CSA C22。2第2556号；e） 增加了护套电缆的附加标记要求（第12.1条）；andf）删除了105C额定XLPE和TRXLPE的“III级”分类，并澄清了EPR I、II、III和IV级的温度额定值（表4和表10）。支持本标准共识过程的资金由以下出资人提供，感谢他们的协助:加拿大电力协会（CEA）、加拿大S&C电气有限公司、富通BC、富通艾伯塔、海事电气、纽芬兰水电、纽芬兰电力、施耐德加拿大电气有限公司和IFD公司。本标准由绝缘电力电缆技术委员会和电力工程与电磁兼容性战略指导委员会管辖的5–46 kV屏蔽和同心中性电力电缆小组委员会编制，并已由技术委员会正式批准。 本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:1.1本标准适用于额定电压为5–46 kV的一至四芯交联聚乙烯和乙丙橡胶绝缘屏蔽电力电缆的材料、施工和测试，这些电缆用于在室内、室外、空中、地下或水下安装和使用的正常条件下分配电能。1.2本标准规定了导体、绝缘和保护层的要求，以及大多数标准类型屏蔽电缆的结构和尺寸要求。1.3本标准不排除使用可选组件，如用于额外机械保护的聚合物层、防潮层压护套、单独覆盖的钢丝铠装或光纤，前提是组件满足本标准的性能要求。 本标准不包括这些可选部件的试验程序。1.4国际单位制给出的数值为本标准中的记录单位。括号中给出的值仅供参考和比较。1.5在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）- 必须）定义其应用程序。

Preface:This is the third edition of CSA C68.10,Shielded power cable for commercial and industrial applications, 5–46 kV. It supersedes the previous editions published in 2014 and 2008.The first edition of this Standard replaced the requirements for shielded power cable in commercial and industrial installations specified in CAN/CSA-C68.3,Shielded and concentric neutral power cables rated 5–46 kV. A related standard in the CSA C68 series, CSA C68.5, specifies the requirements for application of shielded and concentric neutral cables used by electric utilities.This Standard was originally adapted from NEMA WC 74/ICEA S-93-639. CSA Group gratefully acknowledges the co-operation of the Insulated Cable Engineers Association (ICEA) and the contribution of its members.The main revisions incorporated in this edition include the following:a) updated reference publications (Clause 2);b) removed "filled or unfilled" from the XLPE and TRXLPE descriptions (Clause 6.1.1));c) clarified on the four classifications of EPR (Clause 6.1.1);d) deleted reference to test methods in CSA C22.2 No. 0.3 and replaced with CSA C22.2 No. 2556;e) added additional marking requirements for jacketed cables (Clause 12.1); andf) removed "Class III" classification for 105C rated XLPE and TRXLPE and clarified temperature ratings for EPR classes I, II, III and IV (Tables 4 and 10).Funding in support of the consensus process of this Standard was provided by the following funders, whose assistance is acknowledged with thanks: Canadian Electricity Association (CEA), S&C Electric Canada Ltd., Fortis BC, Fortis Alberta, Maritime Electric, Newfoundland Hydro, Newfoundland Power, Schneider Electric Canada Inc., and IFD Corporation.This Standard was prepared by the Subcommittee on Shielded and Concentric Neutral Power Cables Rated 5–46 kV, under the jurisdiction of the Technical Committee on Insulated Power Cable and the Strategic Steering Committee on Power Engineering and Electromagnetic Compatibility, and has been formally approved by the Technical Committee.This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1This Standard applies to the materials, construction, and testing of one- to four-conductor cross-linked polyethylene and ethylene propylene rubber-insulated shielded power cables, rated 5–46 kV, that are used for the distribution of electrical energy under normal conditions of installation and service in indoor, outdoor, aerial, underground, or underwater locations.1.2This Standard specifies requirements for conductors, insulation, and protective coverings as well as for the construction and dimensions of most standard types of shielded cable.1.3This Standard does not preclude the use of optional components such as polymeric layers for additional mechanical protection, moisture-impervious laminated sheath, individually covered steel wire armour, or optical fibres, provided that the components meet the performance requirements of this Standard. Test procedures for these optional components are not included in this Standard.1.4The values given in SI units are the units of record for the purposes of this Standard. Where values are given in parentheses they are for information and comparison only.1.5In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.