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[问题求助] 关于UL758中的燃烧要求
P:2009-04-16 10:24:42
6
具体对应的规范是哪个?下面为我在UL网站上看到的关于AWM20276的一份Stlye PAGE
但是并没有看到要求,所以还是有点迷茫。。。。
但是并没有看到要求,所以还是有点迷茫。。。。
UNDERWRITERS LABORATORIES | APPLIANCE WIRING MATERIAL |
Subj.758 | Section 2 | Page 20276 | Issued:1983-08-16 |
| Revised:2009-01-05 |
Style 20276 | Jacketed Cable |
Rating | 60, 80 deg C; 30 V ac; Cable Flame, construction A; Horizontal flame, construction B. |
Conductor | 40 AWG min., solid or stranded round. May use same or mixed AWG size. |
Insulation | Labeled or complying with AWM Procedure. |
Assembly | Consistsof two or more conductors, twisted pairs, parallel pairs, or groups oftwisted conductors or parallel pairs twisted together. The conductorsor groups of conductors may be laid parallel forming a flat, oval orround cable. The lay of the insulated conductors are not specified. Abarrier layer and/or fillers are optional. Manufacturer shall maintaina complete description of each assembly. |
Shield | Optional. |
Covering | Optional - A 6 mil or heavier PVC covering may be extruded over the conductor assembly. |
Jacket | PVC |
dia of cable under jacket of 0.350 inches or less | (constr A) | 20 mils min average | 17 mils minimum at any point |
dia of cable under jacket of 0.350 inches or less | (constr B) | 15 avg | 12 min |
0.351-0.700 dia | (const A) & (const B) | 30 avg | 24 min |
0.701 -1.00 dia | (const A) & (const B) | 40 avg | 36 min |
1.001-1.50 dia | (const A) & (const B) | 54 avg | 48 min |
Standard | Appliance Wiring Material UL 758. |
Marking | General. |
Use | ConstructionA: Internal wiring or external interconnection of electronic equipmentin Class 2 circuits only. Construction B: Internal wiring of electronicequipment in Class 2 circuits only. |
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