IEC 62677-1:2017适用于一系列结构和材料中的热缩低压和中压模制型材，适用于电力电缆终端、接头和止动端的绝缘、环境密封、机械保护、导电、防跟踪和应变消除。它规定了试验方法和材料要求。最常见的形状如附录A所示。符合本文件要求的材料符合既定的性能水平。然而，用户为特定应用选择材料将基于该应用中充分性能所需的实际要求，而不仅仅基于本文件。这些模制形状设计用于低压和中压电缆附件，因此电气性能将作为组件的一部分进行验证。 EN 50393、HD 629.1和IEC 60502-4中描述了这方面的示例。

IEC 62677-1:2017 is applicable to heat shrinkable low and medium voltage moulded shapes in a range of configurations and materials suitable for insulation, environmental sealing, mechanical protection, electrical conductance, anti-tracking and strain relief for power cable terminations, joints and stop ends. It specifies the test methods and material requirements. The most commonly available shapes are as shown in the Annex A. Materials which conform to this document meet established levels of performance. However, the selection of a material by a user for a specific application will be based on the actual requirements necessary for adequate performance in that application and will not be based on this document alone. These moulded shapes are designed to be used in low and medium voltage cable accessories and as such electrical performance will be proven as part of the assembly. Examples of this are described in EN 50393, HD 629.1 and IEC 60502-4.