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1.2.4.2
?/ X4 j' Y! D1 b/ F. y/ }3 rCLASS II EQUIPMENT9 k4 C5 _+ L {/ R2 D- ?. z( f
equipment in which protection against electric shock does not rely on BASIC INSULATION only,& O% F H0 @( P5 g
but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED5 j! ?2 C. l6 A; D. D
INSULATION are provided, there being no reliance on protective earthing
Q* u6 a- p) N1.2.4.3
8 @( H8 _; F1 T( n- E5 P( H' a& a7 g( ?CLASS III EQUIPMENT; i, L+ S' m- E4 O i
equipment in which protection against electric shock relies upon supply from SELV CIRCUITS) R" X) t' T4 l& {+ k
and in which HAZARDOUS VOLTAGES are not generated8 N! T( f8 b% g, }4 P9 ]! b* @' T; q
NOTE For CLASS III EQUIPMENT, although there is no requirement for protection against electric shock, all other( b9 a! _, }' ^8 H4 o! r
requirements of the standard apply. T( V' t4 k; l* r- k
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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