|
本帖最后由 zylyr2001 于 2019-4-10 09:29 编辑 / v# _& O* A) d
5 P2 Z" w) G& G) R. n9 u
你的这段话是出自哪个标准?怎么我看到的是这样的:* C. C1 \2 b( V: f0 ]7 r0 m& ?4 S
3.3.12 / w* [: @- ]0 L2 O/ K
class III appliance
+ I/ ?3 E8 i, e7 W' xappliance in which protection against electric shock relies on supply at safety extra-low
! a2 U2 k5 N* A9 B Wvoltage and in which voltages higher than those of safety extra-low voltage are not
3 [* P+ ~" U& X: c5 Qgenerated ; G. O9 q* _( U( S
NOTE Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4.
+ G# O5 }! s3 _9 N6 q7 G" I1 y) ?
但是IEC60335-1里还有这样一句:
% I% {" [! R1 h" p+ S! ~' \0 P6.1 Appliances shall be of one of the following classes with respect to protection against 1 E) b4 N. x( E: N; J' n; y+ ~
electric shock:
( G5 S# J5 P: w3 l* t3 fclass 0, class 0I, class I, class II, class III.
' L8 q3 N$ d( WIf an appliance consists of a part of class III construction and a detachable power supply 7 v! J; R5 R! d, i G2 w; g
part, the complete appliance is classified as a class I appliance or class II appliance in 5 B* n. y& `3 z' b6 O
accordance with the classification applicable to its detachable power supply part.
/ a3 r3 Z u2 z: k. X如果按6.1的定义就是三类结构+可拆式适配器,整机的防护等级就取决于适配器的防护等级了,不是一类就是二类,不可能是三类。
" H. ]. Y3 Y; H7 L: u |
|