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根据EN60950-1:2006的定义
3 z# K' |) Y9 k! wCLASS I EQUIPMENT
, I; {' G& O+ W. l7 i9 a" Nequipment where protection against electric shock is achieved by4 R$ L" b6 a; | k2 ~9 g' k
− using BASIC INSULATION and
: X$ L! o: F( {- N3 L( w! y− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building
! L; a0 D" z$ y" n- l0 x, pwiring those conductive parts that are otherwise capable of assuming HAZARDOUS
q! P- Y' R% _% x3 _2 f% \VOLTAGES if the BASIC INSULATION fails
: M% T/ r7 V3 ?, N' tNOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.8 A i& L/ p; \
1.2.4.2- H0 j! r M( I3 i
CLASS II EQUIPMENT- f- n& P0 ]" O% x! l! G- R+ ~
equipment in which protection against electric shock does not rely on BASIC INSULATION only,/ ?/ G- H# O4 w ^
but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED
; M2 M9 k, V, u, l! _; L: Z: yINSULATION are provided, there being no reliance on protective earthing |
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发表于 2011-3-1 10:54
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