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The printed conductors of printed circuit boards shall not be used to provide earthing
1 K6 s+ @5 n7 U, C1 O2 Vcontinuity in hand-held appliances. They may be used to provide earthing continuity in other
1 z8 O9 x+ b& \, `: P7 O, A! Wappliances if at least two tracks are used with independent soldering points and the appliance7 h- `: B& L2 d3 b6 O
complies with 27.5 for each circuit.
6 ^4 d6 C1 \ w7 X0 _不能是手持式器具
: W8 S' F W+ }4 T* N1 Kpcb板上必须有两个单独的焊接接地点和接地线6 F: p( v" u4 X- d6 s6 m
满足接地电阻小于0.1欧 |
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