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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):/ v) C( W* Y1 G$ z; a0 y R
a) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY8 T {5 X, j& Q' s& R* a, H
voltage, minimum CLEARANCES are determined from Table 2K;
. m5 x7 B, a! X# `- f0 U/ K/ cb) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,' b+ q) F% p: u% C, H
the minimum CLEARANCE is the sum of the following two values:
/ C3 n# a2 ]& [& w. `2 M3 g• the minimum CLEARANCE from Table 2K; and
4 k& \' N; n2 Z ?• the appropriate additional CLEARANCE from Table 2L.- U* K2 Q2 g7 R0 i8 n
& g! G9 _1 [) M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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