前言:这是CSA集团和UL关于挤压绝缘管的协调标准。这是CSA C22的第四版。2第198.1号和UL 224第七版。本版CSA C22。2第198.1号取代2006年3月6日出版的前一版。本版UL 224取代2006年3月6日出版的前一版。本协调标准由CSA集团和美国保险商实验室有限公司（UL）编制。感谢美洲国家电工标准协调委员会（CANENA）技术协调委员会15C（电气管道和套管产品）的努力和支持。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本标准规定了绝缘管的要求，绝缘管的横截面通常为圆形，完全由挤出化合物组成，其特征成分为热固性、弹性体或热塑性聚合物（材料和额定值见表1）。这些要求还包括热收缩管和交联管。1.2根据《加拿大电气规范》第1部分（CE规范第1部分）和《国家电气规范》（NEC）ANSI/NFPA 70，管道仅用于空气中——干燥和潮湿场所——作为电气设备和器具内部布线的一部分。它可用于绝缘一个或多个绝缘不充分的导体、母线、电机引线、变压器引线、端子接线片或电子元件的小型组件。管道不适用于与锐边、拐角或突出物接触，或承受张力、压缩或反复弯曲的地方。 如果可以使用专门用于此目的的标准绝缘导线（电器布线材料），则管道不适用。1.3这些要求不适用于织物管、化学膨胀管、用钢筋挤压的聚合物管，或仅用于机械保护的管。1.4任何特定装置或器具中管道的可接受性取决于其在实际使用条件下继续使用的可接受性。因此，对于特定应用，在某些情况下，有必要使用除这些要求中规定的特性以外的特性。例如，可能要求管子具有更厚的壁厚，或具有扁平而非圆形的横截面；它可能需要具有固有的抗浸没在水、油、溶剂或其他液体（或其蒸汽）中的效果； 可能需要在有利于真菌和类似生物体发育的环境中使用。

Preface:This is the harmonized CSA Group and UL standard for Extruded Insulating Tubing. It is the fourth edition of CSA C22.2 No. 198.1 and the seventh edition of UL 224. This edition of CSA C22.2 No. 198.1 supersedes the previous edition(s) published on March 6, 2006. This edition of UL 224 supersedes the previous edition published on March 6, 2006.This harmonized standard was prepared by the CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee 15C, Electrical Tubing and Sleeving Products, of the Council on the Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged.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 specifies the requirements for insulating tubing that is usually round in cross-section and that consists entirely of extruded compounds whose characteristic constituents are thermosetting, elastomeric, or thermoplastic polymers (see Table 1 for materials and ratings). These requirements also cover heat-shrinkable and crosslinked tubing.1.2Tubing is intended for use only in air – in dry and damp locations –as part of the internal wiring of electrical devices and appliances in accordance with theCanadian Electrical Code, Part 1(CE Code, Part 1) and ANSI/NFPA 70,National Electrical Code(NEC). It may be used for insulating one or more inadequately insulated conductors, bus bars, motor leads, transformer leads, terminal lugs, or small assemblies of electronic components. Tubing is not intended for use in contact with sharp edges, corners, or projections, or where subject to tension, compression, or repeated flexing. Tubing is not intended for use where it is feasible to employ a standard insulated conductor (appliance-wiring material) intended specifically for the purpose.1.3These requirements do not apply to fabric tubing, chemically dilated tubing, polymeric tubing extruded with reinforcement, or tubing intended only for mechanical protection.1.4The acceptability of tubing in any particular device or appliance depends upon its acceptability for continued use under the conditions that prevail in actual service. Accordingly, for a particular application, it will in some cases be necessary to employ tubing having features other than or in addition to those specified in these requirements. For example, tubing may be required to have a heavier wall thickness or a flat rather than a round cross-section; it may be required to have inherent resistance to the effects of immersion in water, oil, solvents, or other liquids (or their vapors); it may be required to be used in an environment conducive to the development of fungi and similar organisms.