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1.常见的电水壶蒸汽开关都是全极断开的,要接L/N.如果你的电水壶设计特殊可以发电路图讨论。/ `( p" l9 Y7 A4 N) i
2.个人觉得不需要吧(这个不确定)
- M! i! i7 ?( U+ j" \# `3.标准要求必须可靠固定(要求如下),一般接受焊接或端子有倒扣(印象里没有拉力要求). W, n* y" V7 H
22.31 Neither clearances nor creepage distances over supplementary insulation and
+ T' e' O( R, Z$ d' l) m4 sreinforced insulation shall be reduced below the values specified in Clause 29 as a result of
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If a part, such as a wire, screw, nut or spring, becomes loose or falls out of position, neither5 G( J8 }: x" l7 D0 [+ ]
clearances nor creepage distances between live parts and accessible parts shall be6 s& W7 F7 q; [2 \
reduced below the values specified for supplementary insulation. This requirement does not, g1 \& [% g5 ?: I5 f
apply if:
) C% J6 u6 k7 Z: O) b, j$ g, T– wires connected to terminals have an additional fixing provided near the terminal, so that# O! G* D% U" r4 g8 e
in the case of stranded conductors, the fixing clamps both the insulation and conductor.$ L; B# n, F8 p3 y9 i# I
With the appliance in its normal position of use, compliance is checked by inspection, by! D% m7 F+ m& U( L* _& H; L$ r a3 W" f2 s
manual test and by measurement. |
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