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本帖最后由 ylgc123 于 2017-3-29 10:23 编辑 9 F% a' S9 ~1 T4 @& j
4 C, ~1 y# l5 J, j2 qed6.1 3.3.13
9 D! w. j0 i9 xclass III construction
2 c* ~1 T5 I* J/ v4 P( Tpart of an appliance for which protection against electric shock relies upon safety extra-low
4 K' k9 m u6 T1 [( Tvoltage and in which voltages higher than those of safety extra-low voltage are not
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NOTE 1 Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4.
. p2 i8 |8 X' Y: P9 l" @( Y& QNOTE 2 If the main part of the appliance operates at SELV and is delivered together with a detachable power supply unit then this main part of the appliance is considered to be of class III construction in a class I appliance or class II appliance as appropriate.
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6.1 Add the following to the requirement as a new second paragraph:
5 o: y1 u4 W g' F: e: KIf an appliance consists of a part of class III construction and a detachable power supply part, the complete appliance is classified as a class I appliance or class II appliance in accordance with the classification applicable to its detachable power supply part
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上面两段内容是是60335-1 ed6.1 CL3.3.1和ed6.2 CL6.1中的语句。虽然在ed6.2中删除了3.3.13的note2,但是6.1中增加了类似说明,在正式器具分类中将其归类为I类或II类器具。
0 n0 h: x6 @ u7 `: V标准上很明确的说明了如果器具有一个 a detachable power supply供电,那么器具整体式属于II类器具或I类器具,主体部分认为是III类结构。
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既然有可能器具输入II类器具,那么为什么不打 回型 符号?9 g, I+ r7 N5 n: h
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