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For an AC MAINS SUPPLY not exceeding 300 V r.m.s. (420 V peak):
K) p; L; k& L' L& p0 i0 Ka) if the PEAK WORKING VOLTAGE does not exceed the peak value of the AC MAINS SUPPLY
% U* b) R K5 O4 c% M5 cvoltage, minimum CLEARANCES are determined from Table 2K;2 C+ S4 y/ c" u) Y* @0 z3 l$ n
b) if the PEAK WORKING VOLTAGE exceeds the peak value of the AC MAINS SUPPLY voltage,. j- [3 T- B1 ]5 c) u
the minimum CLEARANCE is the sum of the following two values:0 w+ p& t! I7 Q6 m) z
• the minimum CLEARANCE from Table 2K; and
4 y0 {1 O; j5 `2 U8 K W$ t9 T; k8 j• the appropriate additional CLEARANCE from Table 2L.
3 \% t. A' L* z k- Q% ]. L; a# n w$ o4 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?? |
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