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本帖最后由 zylyr2001 于 2019-4-10 09:29 编辑 7 u* I$ B$ ]3 b- P2 V: ~2 N1 g
, F* e( C5 H( N) P8 h& D h8 Y你的这段话是出自哪个标准？怎么我看到的是这样的：+ {1 b0 N: c$ Z( \/ V; E( b/ c7 L
3.3.12
# s3 c* X$ [4 R+ |class III appliance , A1 A( p' E- s2 V
appliance in which protection against electric shock relies on supply at safety extra-low ! q; {5 c( B3 W$ @
voltage and in which voltages higher than those of safety extra-low voltage are not % n& B4 ]5 Z' ^1 g5 u2 ] G ^
generated ) a K [$ |! N4 U" L
NOTE Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4. 5 j% w7 H F1 E: T- w
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但是IEC60335-1里还有这样一句：& a7 k4 S$ G0 ~/ ]; b' y
6.1 Appliances shall be of one of the following classes with respect to protection against
& B/ q( J2 S$ P* Eelectric shock:
1 L$ n9 v, g1 F6 u9 pclass 0, class 0I, class I, class II, class III. 3 g/ q" A: W3 n- u
If an appliance consists of a part of class III construction and a detachable power supply 8 X8 A- t4 R. m, |# z
part, the complete appliance is classified as a class I appliance or class II appliance in
4 E. Z6 Z) }% q) m) h5 ^- waccordance with the classification applicable to its detachable power supply part. ' n7 h6 i1 R8 k
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。
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发表于 2019-4-9 21:30
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