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根据EN60950-1:2006的定义3 o" v/ { i* c
CLASS I EQUIPMENT
! {! C+ V0 \. R( g, Hequipment where protection against electric shock is achieved by% O1 W3 K: o0 ]; e0 n8 C
− using BASIC INSULATION and
1 w. l3 N4 C& F/ S/ E$ u2 ]( |8 j4 {− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building
9 w* c, F' A- t. u, |" Q3 B) mwiring those conductive parts that are otherwise capable of assuming HAZARDOUS
) @, L. L5 Y3 M7 @4 a/ x; @VOLTAGES if the BASIC INSULATION fails
7 F0 h; Z4 x' eNOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.
; Y3 X1 O+ x/ t0 q1.2.4.2) i9 v# \& @5 B! p! x! L% I( }3 U
CLASS II EQUIPMENT% }8 M% e4 |) ^ ?, ^
equipment in which protection against electric shock does not rely on BASIC INSULATION only,( n/ i. y5 A1 Y) C- v
but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED
7 k8 b& c8 F! B) fINSULATION 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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