|
加湿机UL998标准中,42.11章与42.12章," V: a* d/ ?, U( G' p* A' z1 F
42.11 For an extra-low-voltage safety circuit, if operation of the product with a short circuit or grounded
) b8 k' i+ w- W& j0 ] circuit may result in unsafe operation of the controlled device, spacings shall be not less than as specified
; ~! E/ g, Q/ f# B9 f4 Y/ @ in Table 13.% ]/ X+ }6 m8 e4 ]6 D/ W9 s$ r
42.12 For extra-low-voltage nonsafety circuits, spacings are not specified.
) X, F% D0 J2 W" Q d
6 a: Z M5 Q* Y! @2 a- E, q) M% R$ W) x- S1 g& x( L, a
其中的extra-low-voltage safety circuit与extra-low-voltage nonsafety circuits怎么理解??谢谢
* X2 S3 `% u/ g6 r' f, }6 m |
|