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看看这个定义可能有助于理解 SELV 为嘛要加basic,
+ }2 I5 [& [0 J# Msafety extra-low voltage/ C; k5 S: Z, x8 R) s3 a
voltage not exceeding 42 V between conductors and between conductors and earth or
0 H5 |9 q2 H. N Q( G. j- u: K* gfunctional earth, the no-load voltage not exceeding 50 V。& O- f9 X9 K1 m X7 `" c* K0 \
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8.1.4 An accessible part is not considered to be live if:
+ z1 T$ @: r u% q- p– the part is supplied at safety extra-low voltage, provided that
+ e. E" c5 f0 k' h5 c) |• for AC, the peak value of the voltage does not exceed 42,4 V;, I2 `! q3 L# N1 t [
• for DC, the voltage does not exceed 42,4 V;/ [! b, I1 l0 W/ _0 F5 R& |
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