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根据EN60950-1:2006的定义" E0 Z$ w1 p0 u, v6 ?) H
CLASS I EQUIPMENT
d; n) `& W: x: M( Iequipment where protection against electric shock is achieved by( T; ?& p3 U; [& U2 C, v
− using BASIC INSULATION and: p( ?+ {0 a! ~3 t) B; }& E F
− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building. r9 P' |" u$ U3 F
wiring those conductive parts that are otherwise capable of assuming HAZARDOUS* ~# k+ A/ y. c$ g, g1 K1 ~
VOLTAGES if the BASIC INSULATION fails
- w5 L: u( _5 B& i: P4 rNOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.
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# {" V, U) p& a5 L4 pCLASS II EQUIPMENT" F; S% D3 t& z6 d( Q! j
equipment in which protection against electric shock does not rely on BASIC INSULATION only,
* @) s4 N2 ]$ Z4 Rbut in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED8 ?1 M8 v0 g9 v2 E3 J
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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