This clause of part 2 applies except as follows: Addition: Insert the following after the first paragraph: These requirements apply to the protection of persons against contact with current from electrically heated equipment for melting glass. NOTE - Extraction of liquid glass or a similar material at the extraction point is part of the production process and does not constitute part of the operation of the electrical heating equipment. The standard 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.
IEC 60519-21-1998由国际电工委员会 IX-IEC 发布于 1998-02,于 2008-09 废止。
IEC 60519-21-1998 在中国标准分类中归属于: K60 电气设备与器具综合,在国际标准分类中归属于: 25.180.10 电炉。
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