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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):. r5 s# d: c; {. ]6 ^
a) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY
$ l: ~' W8 R& n9 ]! Gvoltage, minimum CLEARANCES are determined from Table 2K;+ o2 j! v: e7 K( ~; X8 b- c
b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
' U4 v: ^! }, a3 ]$ w# |8 w( \: Z: ~the minimum CLEARANCE is the sum of the following two values:
5 ]* g# W. w* [• the minimum CLEARANCE from Table 2K; and
. b0 t& [& }7 V1 w; I. A3 \• the appropriate additional CLEARANCE from Table 2L.; `; I( X$ J$ X- ~* E' k W
& u. C1 j- R7 W2 ?, I7 s- N/ N C+ X
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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