|
加湿机UL998标准中,42.11章与42.12章,) u+ A( s! O& o- W% l& `
42.11 For an extra-low-voltage safety circuit, if operation of the product with a short circuit or grounded) ^9 `0 P7 Q) t: L5 B% s
circuit may result in unsafe operation of the controlled device, spacings shall be not less than as specified
. @; Q* Y# {' S" L in Table 13.
% l$ v" y: V5 C) u( Q4 ?' I42.12 For extra-low-voltage nonsafety circuits, spacings are not specified.8 n- s* V7 j3 V9 p- n9 ~ I3 e
& d3 s+ {* ~& ~5 R. `3 `# b
. K8 e, _7 I9 x其中的extra-low-voltage safety circuit与extra-low-voltage nonsafety circuits怎么理解??谢谢
# d5 y( }" v& ~ |
|