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我认为为I类器具,原因如下:
' @! V( k O& [3.3.10 class II appliance appliance in which protection against electric shock does not rely on basic insulation only but in which additional safety precautions are provided, such as double insulation or reinforced insulation, there being no provision for protective earthing or reliance upon installation conditions NOTE 1 Such an appliance may be of one of the following types: – an appliance having a durable and substantially continuous enclosure of insulating material which envelops all metal parts, with the exception of small parts, such as nameplates, screws and rivets, which are isolated from live parts by insulation at least equivalent to reinforced insulation; such an appliance is called an insulation-encased class II appliance; – an appliance having a substantially continuous metal enclosure, in which double insulation or reinforced insulation is used throughout; such an appliance is called a metal-encased class II appliance; – an appliance which is a combination of an insulation-encased class II appliance and a metal-encased class II appliance. NOTE 2 The enclosure of an insulation-encased class II appliance may form a part or the whole of the supplementary insulation or of the reinforced insulation. NOTE 3 If an appliance with double insulation or reinforced insulation throughout has provision for earthing, it is considered to be a class I appliance or a class 0I appliance. 备注3:如果一个各处具有双重绝缘或加强绝缘的器具又有接地的防护措施,则此器具被认为I类或01器具. |
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