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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):: Q6 H4 `8 _' O' v2 n. A
a) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY3 w9 z& g* @# \# c% P
voltage, minimum CLEARANCES are determined from Table 2K; y( @8 G6 B. T: {+ \
b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
! P) A9 ?- J4 [2 Uthe minimum CLEARANCE is the sum of the following two values:/ _) @5 o' N/ V" q- L
• the minimum CLEARANCE from Table 2K; and
! b; `' k3 S6 v) V6 `: N7 `• the appropriate additional CLEARANCE from Table 2L.9 Y$ Y3 y [" ]& {0 y( R( G
3 i. K" z3 E0 a" Z2 v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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