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本帖最后由 ylgc123 于 2017-3-29 10:23 编辑 # e% H, ~5 F) N1 ]$ V1 L/ O
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ed6.1 3.3.13
5 o* B y; K7 Q' ~* N) y9 Nclass III construction/ L) h$ v3 ^5 P y$ ]% k; Q% [2 C
part of an appliance for which protection against electric shock relies upon safety extra-low
0 _8 O3 y( e8 u1 M7 J* Tvoltage and in which voltages higher than those of safety extra-low voltage are not7 Z1 [- ?! z' z, D9 b5 [6 l
generated
, q5 t; i6 D; B( RNOTE 1 Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4.
& w# U. h8 R% l4 A5 ~: K" XNOTE 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.$ K4 _9 N$ T2 ]! m
2 s# D( W6 R. \2 Eed6.2 " g; S$ P' w/ L
6.1 Add the following to the requirement as a new second paragraph:$ M' _0 o" [7 K3 X3 H5 r
If 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/ \9 y% m! i: x% W( {& P! x' t5 x
5 k- {6 D# w- u6 D; M [; ^9 M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。
: _, d j/ B- a; \- k0 u' h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?
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