|
|
For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):8 E' o3 ^, |" S5 @' F! y2 T, _
a) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY" Q6 `, Y7 ^) _
voltage, minimum CLEARANCES are determined from Table 2K;
% s4 z! ]/ w$ Z( c5 W+ q7 Kb) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,
* T* ~* \2 T5 m. s9 E$ k. fthe minimum CLEARANCE is the sum of the following two values:
4 ]3 z8 J% W# F* o8 O. `* y, q9 K• the minimum CLEARANCE from Table 2K; and
4 z- {! J5 a5 ~- T* ~• the appropriate additional CLEARANCE from Table 2L.; Y' B+ ?6 u% H+ R
! o: }7 H2 h0 p1 ^6 e( p6 c标准中的b)第一点中“the minimum CLEARANCE”是相对于什么的最小间隙呢?? |
|