绝缘软套管第3部分:各种型号套管规范活页216:热收缩阻燃有限火灾危险套管

[中文适用范围]： This part of IEC 60684-3 gives the requirements for four types of heat-shrinkable, flame-retarded, limited-fire-hazard sleeving with a thermal endurance rating of 105°C as shown below. Class A: thin wall, shrink ratio 2:1, internal diameter up to 102.0 mm. Class B: medium wall, shrink ratio 2:1, internal diameter up to 60.0 mm. Class C: thick wall, shrink ratio 2:1, internal diameter up to 51.0 mm. Class D: medium wall, shrink ratio 3:1, internal diameter up to 40.0 mm. These sleeves are normally supplied in the following colours: black, red, green, blue, white, yellow and green/yellow. Sizes or colours other than those listed in this document are available as custom items. These items are considered to comply with this document if they comply with the property requirements listed in Tables 5, 6, 7 and 8, excluding dimensions and mass. Materials which conform to this specification 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 not based on this specification alone. [外文原描述]： IEC 60684-3-216:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60684-3-216: 2019 gives the requirements for four types of heat-shrinkable, flame-retarded, limited-fire-hazard sleeving with a thermal endurance rating of 105 °C as shown below. Class A: thin wall shrink ratio 2:1 internal diameter up to 102,0 mm Class B: medium wall shrink ratio 2:1 internal diameter up to 60,0 mm Class C: thick wall shrink ratio 2:1 internal diameter up to 51,0 mm Class D: medium wall shrink ratio 3:1 internal diameter up to 40,0 mm These sleevings are normally supplied in the following colours: black, red, green, blue, white, yellow and green/yellow. Sizes or colours other than those listed in this document are available as custom items. These items are considered to comply with this document if they comply with the property requirements listed in Tables 5, 6, 7 and 8, excluding dimensions and mass. Materials which conform to this specification 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 not based on this specification alone. This second edition cancels and replaces the first edition published in 2001, Amendment 1:2005 and Amendment 2:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: 1. the temperature at which the sleeving is shrunk in a forced-air circulation oven for (5 ± 1) min has been increased from (150 ± 5) °C to (200 ± 5) °C. Keywords: flexible insulating sleeving for electrical purposes