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针对IEC 60335-1的家电类产品来说:( } e0 W( {" |
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。( F1 D! G) y) t% X% {
, W ], C: O3 L
22.42 Protective impedance shall consist of at least two separate components. If any one
: O7 P# W j- R6 R9 c" yof the components is short-circuited or open-circuited, the values specified in 8.1.4 shall not3 ?, Y& X" t! M
be exceeded.! `7 I3 m8 {4 u
Component impedances shall be unlikely to change significantly during the lifetime of the5 b+ O c' E) q* A& g
appliance. f$ j5 X* X" H
Compliance is checked by inspection and by measurement and if necessary, for resistors and0 @) e$ i" k* G4 v8 e
capacitors by the following tests.- a* L% n$ V" ~1 q
Resistors are checked by the test of 14.1 a) in IEC 60065 and capacitors are checked by the
9 x- G) X$ `, B5 R2 J$ D ntests for class Y capacitors in IEC 60384-14 appropriate to the rated voltage of the appliance. |
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