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加湿机UL998标准中,42.11章与42.12章,; S& S5 X6 I: a2 w4 B: x, f+ q" O
42.11 For an extra-low-voltage safety circuit, if operation of the product with a short circuit or grounded
0 T1 n" K- \& i ~1 k7 g9 z" w8 K; y circuit may result in unsafe operation of the controlled device, spacings shall be not less than as specified2 y6 L3 Z2 V+ ?1 o# |' k4 `
in Table 13.
8 W& Q- x4 @4 O8 R, s. v42.12 For extra-low-voltage nonsafety circuits, spacings are not specified.
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4 l8 `- Y- p7 ]' X8 a其中的extra-low-voltage safety circuit与extra-low-voltage nonsafety circuits怎么理解??谢谢
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