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1.2.4.20 F, `5 A3 y% b
CLASS II EQUIPMENT+ `! W" L+ f5 j
equipment in which protection against electric shock does not rely on BASIC INSULATION only,
" ]: U+ A. J$ z4 o# W* jbut in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED
b/ S: C0 z! h8 s, E& d- b0 oINSULATION are provided, there being no reliance on protective earthing
( h& y1 ~( a. B1.2.4.3
0 H, }& F8 H* E' G9 @. |* z' TCLASS III EQUIPMENT# z7 ]/ G' Y9 ?/ S# D
equipment in which protection against electric shock relies upon supply from SELV CIRCUITS0 }0 ?$ i& e9 m; l# s
and in which HAZARDOUS VOLTAGES are not generated
4 x* A& u5 p0 WNOTE For CLASS III EQUIPMENT, although there is no requirement for protection against electric shock, all other
, @" T/ ?) i; e% H8 @- Lrequirements of the standard apply.% E/ ]$ t+ _$ z5 b8 Y* C7 e1 c1 Y
根据这个定义,有可能是二类,也有可能是三类,取决于你供电是TNV还是SELV了。 |
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