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针对IEC 60335-1的家电类产品来说:) M9 M5 Z9 H/ z# F. V
Y1或Y2都可以。如果使用则至少需要2个或以上,需要考虑任何一个开路或短路的情况。
0 u2 N- r) K% X. n
9 n9 w# [; j+ _22.42 Protective impedance shall consist of at least two separate components. If any one
9 l' t" ]% ?+ q& K+ jof the components is short-circuited or open-circuited, the values specified in 8.1.4 shall not# {0 b- ?7 u& _1 Y) X
be exceeded.; t |1 B& x7 q
Component impedances shall be unlikely to change significantly during the lifetime of the
! V& L3 n: _$ Oappliance.
9 Q1 k9 n+ z5 \% }Compliance is checked by inspection and by measurement and if necessary, for resistors and) v5 ?! t }- [. Y$ Z
capacitors by the following tests.
# F/ ~7 `% c. W: M1 t7 y' ], cResistors are checked by the test of 14.1 a) in IEC 60065 and capacitors are checked by the
% ^) V& ^8 g! } B$ @tests for class Y capacitors in IEC 60384-14 appropriate to the rated voltage of the appliance. |
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