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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。, } g/ d+ N# x" A
2.个人觉得不需要吧(这个不确定). ]: d8 h* C1 _2 C) H1 Z
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)
b5 j$ `9 P7 G# [+ q22.31 Neither clearances nor creepage distances over supplementary insulation and, S7 Z8 W! c+ H- N8 K! K
reinforced insulation shall be reduced below the values specified in Clause 29 as a result of0 ]$ c9 h0 f. \, G8 P) c1 h0 O( c/ X
wear.* N% }% O! U) E3 L
If a part, such as a wire, screw, nut or spring, becomes loose or falls out of position, neither+ W5 L; M8 y9 L7 B2 j R, T
clearances nor creepage distances between live parts and accessible parts shall be* k$ a. [" O# W K
reduced below the values specified for supplementary insulation. This requirement does not' h% M5 L" F) l9 r
apply if:; I, I! z7 {/ X
– wires connected to terminals have an additional fixing provided near the terminal, so that5 F0 j2 R$ m8 M7 l: |8 c& T) p! |6 c
in the case of stranded conductors, the fixing clamps both the insulation and conductor.
- @/ h/ {! U, o6 `With the appliance in its normal position of use, compliance is checked by inspection, by. s# k8 V4 t0 h( r
manual test and by measurement. |
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