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针对IEC 60335-1的家电类产品来说:! R5 r3 J1 M$ r2 s
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。8 V( T% U4 m7 m- G# O5 ~
1 U( H* E2 X; c; _22.42 Protective impedance shall consist of at least two separate components. If any one
) v [1 l5 K" W& f0 Vof the components is short-circuited or open-circuited, the values specified in 8.1.4 shall not
2 ^' m7 H0 S' n! `, ]8 Dbe exceeded.
9 K6 {" s; V8 ]$ ~, p/ b- [# Z$ mComponent impedances shall be unlikely to change significantly during the lifetime of the
4 R$ s1 h' x: J+ N% m9 `. M& t; {appliance.& F( @6 G. F. d/ g Q, \
Compliance is checked by inspection and by measurement and if necessary, for resistors and
4 L! W2 _5 U( X! Qcapacitors by the following tests.5 O/ o4 I4 t+ F- E2 Y2 N
Resistors are checked by the test of 14.1 a) in IEC 60065 and capacitors are checked by the; G) R6 o: W' A. D% g
tests for class Y capacitors in IEC 60384-14 appropriate to the rated voltage of the appliance. |
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