引用第4楼lsdb2007于2008-11-29 09:28发表的 :. ?9 X5 v1 L, r A) I' x7 w4 A
UL758标准、UL62标准对绞线以及成缆绞距是有明确规定的。
我的印象是，導體絞距依照具體的導體番號，在標準中有明確規定，, v/ V+ B0 I5 r: \& o8 @ }
芯線絞距規定不是很明確，但一般是芯線完成外經的幾倍！作者: billma 时间: 2013-5-19 10:25
4.1.4.1.1 Flexible cords with cabled conductors shall have the individual conductors twisted together with a length of lay not greater than that shown in Table 10. 8 u1 O2 ?- z. |) Y8 r- }When cords covered in Table 10 have mixed conductor sizes, 8 D! }1 ^% r1 ]; x* G9 _6 }+ l8 Q Ethe lay shall be based on the number of conductors and the largest conductor size found in the cord. 5 p* ]9 m/ V# S1 T, B+ {Constructions not covered in Table 10 shall have the individual conductors laid up so that the lay shall be not more than 15 times the overall diameter of the conductor assembly. : U9 h& @' g }. f; l) Y; ^For CXTWu, CXWTc,and TXc, the lay shall not be more than 30 times the overall diameter of the insulated conductor. & G: X* {8 H$ cFor multiple-layer cords, the conductors in each layer shall be twisted, $ J7 x8 Z/ h8 q9 K3 ]/ ubut the lay is not specified, except that in the outer layer the lay shall be not more than 15 times the overall diameter of that layer.- u# t0 j6 P7 }% u0 p) W. t1 P/ I
以上UL62条款需要汉化求助。
