+ ^- [5 x: r5 d! g8 Y+ ~% H5.1版本中对II类、III类器具带有功能性接地（一般EMI用），功能性接地点与带电部件之间需要满足加强绝缘或双重绝缘的要求。 : D7 ]6 p; C( T3 ~2 {那么现在很多单个Y电容分开的此类产品都可能不满足要求。, i4 z; a; _0 m4 z, n' ]
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22.53 Class II appliances and class III appliances that incorporate functionally earthed) u$ |, T. d; I9 L8 M" b: {
parts shall have at least double insulation or reinforced insulation between live parts and " x* D. p8 W: t; {& P. b& g# Bthe functionally earthed parts. U" M! i5 l' R6 X
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