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[问题求助] 急求ul2990的性能参数,导线结构

P:2007-10-19 14:16:57

1

在线等答案,很急,谢谢大家了

loose tube/tight buffer fibreoptic line - 松套管-紧包缓冲层光纤生产线 (0) 投诉

P:2007-10-19 14:29:56

2

UNDERWRITERS LABORATORIES INC.              APPLIANCE WIRING MATERIAL

Subj. 758     Section 2     Page 2990        Issued:  1979-04-11
                                Revised:  2003-03-20

 

Style 2990    Electronic Cable.

______________________________________________________________________________

 

Rating     80°C, 30 V.

______________________________________________________________________________

 

Insulated     No. 40 AWG minimum.  Labeled or complying with

Conductors    Manufacturer's AWM Procedure having a minimum rating of

           80°C.

______________________________________________________________________________

 

Assembly      Consists of two or more conductors, twisted pairs or

           groups of twisted conductors twisted together.  The

           conductors or groups of conductors may be laid parallel

           forming a flat, oval or round cable.  The lay of the

           conductors is not specified.  A barrier layer and/or fillers

           are optional. ______________________________________________________________________________

 

Covering      (Optional)  A 6 mil or heavier PVC covering may extruded

           over the conductor assembly.

______________________________________________________________________________

 

Shield     Optional.

______________________________________________________________________________

 

Jacket     PVC - Class 43

 

                     THICKNESS (mils)

 

             #Dia. of Cable                 Minimum

              Under Jacket       Minimum        at any

               in Inches          Average         point 

 

              0.700 or less      30         24

 

           # - Major dia if cable is flat or oval.

______________________________________________________________________________

                            (Continued on Page 2990A)


 

UNDERWRITERS LABORATORIES INC.              APPLIANCE WIRING MATERIAL

Subj. 758     Section 2     Page 2990A       Issued:  1979-04-11
                                Revised:  2003-03-20

 

Standard      Appliance Wiring Material UL 758.

______________________________________________________________________________

 

Instructions  Detailed Examination.

to UL

Representative    The designation of all Styles of the individual conductors

           used making up the cable assembly shall be available, and

           the UL Representative's tag shall indicate if the Style

           is labeled or not.  If they are not labeled, the

           appropriate Follow-Up Tests shall be conducted.

______________________________________________________________________________

 

UL         (4)  Detailed Examination.

Counter-Check (4)  Flexing.

*Program      (12) Cable Flame Test on Completed Cable.

 

           If the insulated Styles are not labeled, the appropriate

           Follow-Up Tests shall be conducted.

______________________________________________________________________________

 

Marking       General.

 

           "Low voltage computer cable" may be printed on jacket

           surface.

______________________________________________________________________________

 

Use       Internal Wiring or External Interconnection of Electronic

           Equipment, class 2 circuits only.

 

over-end pay-off unit - 越端放线装置 (0) 投诉

P:2007-10-19 14:40:29

3

38+1d对

four-tape lapping head - 四带绕包头 (0) 投诉

P:2007-10-19 15:07:56

4

楼主做的是不是IEEE 1284线材?

self-contained high pressure nitrogen filled cable - 自容式高气压充氮电缆 (0) 投诉

P:2007-10-19 16:38:31

5

对的 你那有这方面的材料么?

internal-communication system - 内部通信系统 (0) 投诉

P:2007-10-19 18:16:16

6

只有惠盈的测试规范



Arnitel - 阿尔尼特(Akzo公司生产的一种光纤二次涂层材料,成分为PETP,聚酯弹性体类) (0) 投诉

P:2007-10-19 18:34:47

7

我现在是想做那种线

cut-through test - 软化击穿试验(漆包线);切通试验(塑料绝缘护套) (0) 投诉

P:2007-10-21 16:31:21

8

继续征求 UL2900线的结构

external termination - 外端,外部终端 (0) 投诉

P:2007-10-22 09:25:59

9

yun,什么都没有呢,你也学习

epoxy sealing compound - 环氧密封胶 (0) 投诉

P:2007-10-22 10:19:38

10

谢谢tanhy,请问那位有38P+1P的结构及电气性能。急需

telegraph-cable - 电报电缆 (0) 投诉

P:2007-10-22 10:20:31

11

2L不是给答案了吗

strain-bearing element - 承拉构件,承重构件 (0) 投诉

P:2007-10-23 12:41:12

12

继续征求ul2900 38+1P 线的物理结构和电气性能,很需要

site test on cables - 电缆的现场试验 (0) 投诉

12


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