1.1 本规范涵盖了用作便携式保护装置的橡胶绝缘盖的验收测试，以保护工人免受意外接触带电导体、设备或电路的影响。它包括绝缘子罩、终端保护器、线路软管接头、电缆端盖和其他盖。本规范的电气、物理和化学要求也应适用于可能为特定目的开发的任何新的或修改的盖子。 1.2 提供了三种化学和物理特性不同的盖子，分别命名为I型，不耐臭氧，II型和III型，耐臭氧。 1.3 提供了五种不同电气特性的盖，分别指定为0级、1级、2级、3级和4级。 1.4 提供了五种设计特征不同的封面样式，分别为A型、B型、C型、D型和E型。 注1: 由于使用要求，一些盖子是半刚性的，另一些是柔性的。柔性装置应保持适当的柔性，以便在正常温度下应用和拆卸 − 29 °C至54.5 °C(−20 华氏度至130度 °F）。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 看见 18.2 对于特定的警告声明。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers acceptance testing of rubber insulating covers for use as portable protective devices for protection of workers from accidental contact with live electrical conductors, apparatus, or circuits. It includes insulator hoods, dead-end protectors, line hose connectors, cable end covers, and miscellaneous covers. The electrical, physical, and chemical requirements of this specification shall apply also to any new or modified styles of covers that may be developed for specific purposes. 1.2 Three types of covers, differing in chemical and physical characteristics, are provided, and are designated as Type I, non-resistant to ozone, and Type II and Type III, resistant to ozone. 1.3 Five classes of covers, differing in electrical characteristics, are provided, and are designated as Class 0, Class 1, Class 2, Class 3, and Class 4. 1.4 Five styles of covers, differing in design characteristics, are provided, and are designated as Style A, Style B, Style C, Style D, and Style E. Note 1: Because of the use requirements some covers are semi-rigid and others flexible. The flexible devices should remain suitably flexible for application and removal through normal temperatures of − 29 °C to 54.5 °C (−20 °F to 130 °F). 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See 18.2 for a specific cautionary statement. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.