|
|
For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):
z+ t' ] b% v: s) t7 va) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY
4 a1 o9 t2 j' D% b& z, {2 r) }voltage, minimum CLEARANCES are determined from Table 2K;" {5 B* J- w+ c" m4 n9 ]; {
b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
w2 U; g7 ?+ y9 Mthe minimum CLEARANCE is the sum of the following two values:
( i, D+ ?7 ~; g) \9 U- K• the minimum CLEARANCE from Table 2K; and
0 {$ R6 R0 m+ p( m" Z" m4 l: @. w• the appropriate additional CLEARANCE from Table 2L.4 [2 G6 S, ~& h
6 g( B$ ?; }8 n" z
标准中的b)第一点中“the minimum CLEARANCE”是相对于什么的最小间隙呢?? |
|