请注意:此版本的所有临时修订版将在您购买时提供。挤压绝缘管2241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的地方，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。

Please note: All interim revisions for this edition available at time of your purchase will be included.Extruded Insulating TubingUL 2241 Scope1.1 This 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.1.2 Tubing 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 the Canadian 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.1.3 These requirements do not apply to fabric tubing, chemically dilated tubing, polymeric tubing extruded with reinforcement, or tubing intended only for mechanical protection.1.4 The 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.