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本帖最后由 ylgc123 于 2017-3-29 10:23 编辑 & } w3 f( n* |8 I; `
6 f) D4 ~: d7 F& U$ L* Ned6.1 3.3.13 5 D+ X6 e' e# ~+ `5 _
class III construction; m" C, }" k/ H& m' M f7 W
part of an appliance for which protection against electric shock relies upon safety extra-low
9 ?7 R- G7 T/ ]voltage and in which voltages higher than those of safety extra-low voltage are not% j' e: ?8 E$ B3 J3 T
generated
|1 \& D" @5 o# M" h, F: V. l) nNOTE 1 Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4.* r" k/ W/ `0 W: V
NOTE 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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/ a |9 q, [# C4 }( ^4 g- M6.1 Add the following to the requirement as a new second paragraph:
* J) C, R% N& e7 J& ], j$ TIf 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) |7 U- V& h1 [/ z, \* o
: a4 y! T! s/ }3 V* R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。% I, A& r7 \; r9 K0 e* ^) d
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。; L" z, \' Z4 M6 c/ t, F" V4 a
3 P. r: g8 d: L( c) N既然有可能器具输入II类器具,那么为什么不打 回型 符号?
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