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根据EN60950-1:2006的定义) E( g# R/ J4 H- H1 }
CLASS I EQUIPMENT
- q; T' z& e0 @# zequipment where protection against electric shock is achieved by( Q5 W- l2 @" c8 ~, x
− using BASIC INSULATION and+ \4 u2 T. p, R' S3 _8 v. p _
− providing a means of connection to the PROTECTIVE EARTHING CONDUCTOR in the building
; n0 V# j; Z4 T4 R- Mwiring those conductive parts that are otherwise capable of assuming HAZARDOUS( V) H& V7 |1 a" x7 l
VOLTAGES if the BASIC INSULATION fails
9 N$ I4 M% J! R5 L6 L; lNOTE CLASS I EQUIPMENT may have parts with DOUBLE INSULATION or REINFORCED INSULATION.
! F( ~( N2 i5 F- B3 a1.2.4.2. p0 \: y& X/ z! J3 `# w0 o
CLASS II EQUIPMENT
& I3 K5 v5 P: i" T& k% qequipment in which protection against electric shock does not rely on BASIC INSULATION only,
; q, ^6 m" x! Q! vbut in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED
Y! x1 w1 L# ^/ \9 t+ q* ZINSULATION 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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