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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):
5 a+ u0 y0 C+ Z8 Qa) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY
8 N5 O& S" s" a; n- h. D# z& Z" {voltage, minimum CLEARANCES are determined from Table 2K;
) F( |0 Q3 q% B- a/ j _b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
( p% m" b7 ?, @the minimum CLEARANCE is the sum of the following two values:
7 y+ X" b6 W, u! c- W3 a: N• the minimum CLEARANCE from Table 2K; and5 Z5 }! W1 i4 |" q
• the appropriate additional CLEARANCE from Table 2L./ L, E e4 D" I. ~& b+ y$ Q) ~
`# I6 c. w+ U' Y* g6 U. K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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