标题: CTL 590 有关爬电距离和电气间隙决议 [打印本页] 作者: chengyong001 时间: 2010-4-22 09:44 标题: CTL 590 有关爬电距离和电气间隙决议 Question: As can be seen from examples 2 and 6 of IEC 60664-1(GB/T 16935.1) sub(分/分支) clause 4.2 comers with angles greater or equal than 90 degrees are not bridged. lEC 60664-1 does not contain specific information at which angle less than 90 degrees bridging shall be applied. Some of the above mentioned standards specify that bridging shall be applied for angles less than 80 degrees. Can this 80 degree rule be applied in general for all standards? 2 a8 o) j- I0 s. f! {" d
8 V$ }( {& L, p: V& `6 R4 T9 a
Decision: Yes. The 80 degree rule shall be applied in general for all standards. 6 ]# e6 A/ e* a! X1 k! r9 h" G$ Y6 Z% J