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根据EN60950-1:2006的定义
1 I6 D- b. P7 ?8 k, d* W: }CLASS I EQUIPMENT
0 ]0 f" ]+ u0 T: _, h/ a4 w: ~6 X4 \equipment where protection against electric shock is achieved by
6 M- t+ x* r7 C; c$ g, f7 ]− using BASIC INSULATION and
- y9 H G) w k7 J/ g− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building) Z1 ~+ ~5 x5 w, N2 I1 F6 o9 @( U
wiring those conductive parts that are otherwise capable of assuming HAZARDOUS! _8 C$ c* v8 J- S
VOLTAGES if the BASIC INSULATION fails2 i) ~( |; T4 i8 `: _
NOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.$ _5 j. ~0 j$ ^
1.2.4.2
5 {3 z* g: E) zCLASS II EQUIPMENT
$ W" ^! h# z3 k+ h9 a/ W/ [+ ^equipment in which protection against electric shock does not rely on BASIC INSULATION only,; h2 C: p( p* D7 l
but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED- b0 ]$ E2 }% \9 U5 G
INSULATION 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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