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本帖最后由 zylyr2001 于 2019-4-10 09:29 编辑
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你的这段话是出自哪个标准?怎么我看到的是这样的:
/ w+ P G0 K! C' b7 l3.3.12
% v- s( U3 A4 I! |; v I* K6 `class III appliance 6 O# ?! A( I4 U, v- b; f$ d
appliance in which protection against electric shock relies on supply at safety extra-low
; P1 L p- F5 G# Fvoltage and in which voltages higher than those of safety extra-low voltage are not ' S' W4 h# W, T- [- z
generated
- K' Z. x& s$ z" A9 W4 N# HNOTE Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4. & W, X1 j; [. W: T; R
* ~0 c& w5 @2 c9 t5 R9 T3 n但是IEC60335-1里还有这样一句:
4 s+ d+ A: h, n" m3 O- e" k% J, g6.1 Appliances shall be of one of the following classes with respect to protection against
4 e! ^& z( T. o$ Nelectric shock: 4 {0 Y4 G( K2 k! O0 B' V
class 0, class 0I, class I, class II, class III. 7 ]$ N0 Y: M2 }# I% n) }3 `9 z
If an appliance consists of a part of class III construction and a detachable power supply 7 u2 d" R, j& a9 b3 E6 T
part, the complete appliance is classified as a class I appliance or class II appliance in 0 M' b# [0 N3 O3 Z A! ^& q9 x7 d
accordance with the classification applicable to its detachable power supply part.
; E/ ~" @* ^( z) @- O. J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。1 P1 X5 y1 {& }; [6 u
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