标准摘要
[中文适用范围]： 除以下情况外，第 2 部分的本条款适用： 补充：在第一段后插入以下内容：这些要求适用于防止人员接触熔化玻璃的电加热设备的电流。注：在提取点提取液态玻璃或类似材料是生产过程的一部分，并不构成电加热设备操作的一部分。该标准还涵盖了电加热与其他加热方式（例如液体燃料加热）结合使用时电气部件的安全问题。 [外文原描述]： Covers the safety aspects of electrical parts also in the case when electrical heating is combined with other means of heating, for example liquid fuel heating. Supplements and modifies the corresponding clauses in IEC 60519-2. The contents of the corrigendum of June 1999 have been included in this copy.
英文名称Safety in electroheat installations - Part 21: Particular requirements for resistance heating equipment - Heating and melting glass equipment