|
|
For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):3 @* D( x5 f3 @: d/ ]5 I/ z! W7 G1 Z
a) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY7 p! f) O! T8 B0 d
voltage, minimum CLEARANCES are determined from Table 2K;
, a6 j6 {; `7 n- n% m wb) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
! |2 e W7 {& k8 x. Q& k2 @- ^the minimum CLEARANCE is the sum of the following two values:( h& r2 c- q4 J# Y8 Z. n- Q9 U2 c# G
• the minimum CLEARANCE from Table 2K; and
9 f4 t9 M2 e" i& d y• the appropriate additional CLEARANCE from Table 2L.2 }2 N1 C, c; G" `( Q
9 I6 ]9 H; H( B0 T* b! A# a/ C9 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?? |
|