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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):
5 a$ a3 r$ U$ s+ e8 I9 K4 [9 na) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY
) i% F$ M3 |* b* \# kvoltage, minimum CLEARANCES are determined from Table 2K;6 O5 d3 D. p9 [% ]; V) E3 U+ H0 {
b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
/ m; F8 |4 f7 ` W6 ^the minimum CLEARANCE is the sum of the following two values:: S6 @* M, z2 [
• the minimum CLEARANCE from Table 2K; and
" B, ^& f6 w& J. ~- Q s• the appropriate additional CLEARANCE from Table 2L.9 J! @; C2 Q" K: E% C& j0 T' z8 R
; X/ ~! E" S, Q6 v9 |9 q
标准中的b)第一点中“the minimum CLEARANCE”是相对于什么的最小间隙呢?? |
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