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看2.8.7.1:
! z5 r( r6 ^+ }1 D8 _2.8.7.1 Contact gaps
1 w2 R7 m1 k+ N5 M1 i9 xIf the contact gap is located in the PRIMARY CIRCUIT, the contact gap shall not be less than that6 \9 x" T; h2 f/ _" r# d7 l
for a disconnect device (see 3.4.2). If the contact gap is located in a circuit other than a
0 v, T4 j8 c- [# k& t1 H) ~PRIMARY CIRCUIT, the contact gap shall be not less than the relevant minimum CLEARANCE; w" J) V) Y3 m! q
value for BASIC INSULATION in a SECONDARY CIRCUIT specified in 2.10.3 (or Annex G)./ E4 l: I6 x3 h3 q# A9 s8 e
Compliance is checked by inspection of the available data and, if necessary, by
( r" d$ G# |6 r* k# g9 k+ Ameasurement.& Y% a! [" s" V
是否要求距离,取决于你使用的位置,如果要求,277V,换算成Peak值1.5mm也够了,不过你还需要注意爬电距离,PCB板上的两个触点间的引脚,根据内插法,至少要2.77mm以上。 |
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