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1.2.4.2
& r9 {5 H+ ]0 L* N& ACLASS II EQUIPMENT
?# p. ~' L B! U* E3 Dequipment in which protection against electric shock does not rely on BASIC INSULATION only,
/ c0 s: _: _' p! G* R; c" ^but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED
2 A4 b* i& c O) J: B0 J9 aINSULATION are provided, there being no reliance on protective earthing: H- Z1 j C# W$ l9 X$ E+ E8 _: z
1.2.4.3
; H9 e0 q2 Z k/ v7 l, LCLASS III EQUIPMENT) C l3 r- V' g5 F' h
equipment in which protection against electric shock relies upon supply from SELV CIRCUITS
0 Z: ]8 N$ A% j! r; \. }# Cand in which HAZARDOUS VOLTAGES are not generated5 Q; B, L9 g7 U- R) ^, @1 b2 \
NOTE For CLASS III EQUIPMENT, although there is no requirement for protection against electric shock, all other
; @" B3 f9 J8 L: h9 K/ r" ~; X3 d' s Brequirements of the standard apply.
5 I9 ]+ d$ C6 R+ d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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