1.1本规范涵盖强制对流通风电加热炉，在高于环境温度20C至500C的全部或部分温度范围内运行，并用于电绝缘材料的耐热性评估。 1.2 I型烘箱的规范要求基于IEC出版物216-4-1，在技术上与之相同。II型烘箱的要求基本上与规范D 2436的要求相同。 本规范和相关试验方法D5374已取代规范D 2436。 1.3虽然本规范涵盖的烘箱主要用于耐热性评估，但只要其特性适合其他应用，也可以使用。 1.4本规范不涉及安全方面。如果预计烤箱内容物或烤箱安装位置可能会产生危险，则买方应确定并指定需要哪些额外要求。

1.1 This specification covers forced-convection ventilated electrically-heated ovens, operating over all or part of the temperature range from 20C above the ambient temperature to 500C, and used for thermal endurance evaluation of electrical insulating materials. 1.2 The specification requirements for Type I ovens are based on IEC Publication 216-4-1, and are technically identical to it. The requirements for Type II ovens are essentially identical to the requirements of Specification D 2436. This specification and an associated test method, D5374, have replaced Specification D 2436. 1.3 While the ovens covered by this specification are intended primarily for thermal endurance evaluation, they can also be used wherever their characteristics make them suitable for other applications. 1.4 This specification does not address safety aspects. If it is anticipated that oven contents or the location in which the oven is to be installed may create a hazard, the purchaser should determine and specify what additional requirements are needed.