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根据EN60950-1:2006的定义2 N) s! y' K6 G: `8 m6 ^9 C" R
CLASS I EQUIPMENT
4 w1 l8 V0 r+ b& ]$ Zequipment where protection against electric shock is achieved by
, H2 u! W6 f6 U1 H% {! V− using BASIC INSULATION and
/ q7 I+ T1 @, K ?6 y/ ^ [− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building0 i- |- |! p3 o; _
wiring those conductive parts that are otherwise capable of assuming HAZARDOUS
/ t3 u2 T( p, A$ H. r& Q0 ~, [VOLTAGES if the BASIC INSULATION fails
2 {" ]+ }. C, a* t0 H# ?NOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.
& ?$ a7 f' w- i, U3 A1.2.4.2
. M5 A: c* M7 B; aCLASS II EQUIPMENT0 U$ Y% o2 Z5 ?) r! h2 ^
equipment in which protection against electric shock does not rely on BASIC INSULATION only,
4 r4 o# H0 J0 ~2 y$ o( Ibut in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED+ k9 T0 Y9 o6 V9 x3 a6 s. k
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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