美女胸被狂揉扒开吃奶的网站o_亚洲日韩av中文无码专区_东京热激情无码专区_久久HEZYO久综合亚洲色_欧美成人高清视频_国产精品乡下勾搭老头_欧美一级v片在线播放_成人午夜国产视频_男女猛烈无遮挡免费动态图_亚洲一区国产精品视频

首頁 > 國外線纜

[問題求助] 請問各位專家:awm2919是什么樣的一種線呀?

P:2007-12-24 12:10:43

1

溫度,額定壓力,導體尺寸和材料,絕緣層材料和厚度,鎧裝材料和厚度(如有),對屏蔽或外護套的描述,所需的標志以及對其適用范圍的敘述。

里面的芯線與普通的高溫線AF-1相比,有什么不同嗎?能否用高溫線外加屏蔽網來代替?

[awm2919 在 2007-12-24 12:13:04 編輯過]

super tension cable - 超高壓電纜(工作電壓在220kV以上) (0) 投訴

P:2007-12-24 12:50:07

2

UNDERWRITERS LABORATORIES INC.               APPLIANCE WIRING MATERIAL

Subj. 758       Section 2       Page 2919        Issued:  1978-03-22

                                    Revised:  2005-04-18

 

 

Style 2919

 

Low Voltage Computer Cable.

 

 

Rating

 

80°C, 30 Volts.

 

 

 

Insulated Conductors

 

 

No. 40 AWG minimum.  Labeled or complying with Manufacturer’s AWM Procedure having a minimum rating of 80°C, 30 V.

 

 

 

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.  Manufacturer shall maintain a complete description of each assembly.  May use same or mixed AWG size.

 

 

 

Covering

 

(Optional) - A 6 mil or heavier PVC covering may be extruded over the conductor assembly.

 

 

 

Shield

 

Optional.

 

 

 

Jacket

 

PVC - Class 43

 

                   THICKNESS (MILS)

 

#Dia of cable

under jacket         Minimum            Minimum

in inches            Average          at any point

 

0.425 or less            30                24

0.426 - 0.700            45                36

0.701 - 1.000            60                48

1.000 - 1.500            80                64

1.501 - 2.500           110                88

2.501 and larger        140               112

 

# - Major dia if cable is flat or oval.

 

 

 

Braid

 

Optional.

 

 

 

Standard       

 

Appliance Wiring Material UL 758.

                                (Continued on Page 2919A)
UNDERWRITERS LABORATORIES INC.               APPLIANCE WIRING MATERIAL

Subj. 758       Section 2       Page 2919A       Issued:  1978-03-22

                                    Revised:  2003-02-17

 

 

 

Instructions

to UL

Representative

 

Detailed Examination.

Tensile Strength and Elongation of Jacket.

 

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

Counter-Check

Program

 

 

*

 

(4)  Detailed Examination.

(4)  Tensile Strength and Elongation of Jacket.

(4)  Heat Shock on Jacket.

(4)  Deformation on Jacket.

(4)  Cold Bend on Completed Cable.

(12) Cable Flame Test on Completed Cable.

 

If the insulated Styles are not labeled, the appropriate Follow-Up Tests shall be conducted.

 

 

 

Marking

 

General.

 

 

 

Use

 

As internal wiring or external interconnection in Class 2 Circuits of electronic computers and electric business machines.

 

 

 

 

ACM - Association for Computering Machinery(美國)計算機協(xié)會 (0) 投訴

P:2007-12-24 22:54:25

3

電腦周邊線,型號很多。

sag of the span - 架空線桿塔間的弧垂 (0) 投訴

P:2007-12-25 11:45:24

4

沒有什么特別的,就是一款外觀要求比較好的屏蔽線材,外被那么厚,押出很不錯的。

frame pulse - 幀脈沖 (0) 投訴

P:2007-12-25 17:06:55

5

就是RGB 的一種,發(fā)泡是28AWG的,有中被。射線為26AWG,通常有6,7,8,9條。外被一般是7.4mm左右.

on-off - 開關;通-斷 (0) 投訴

P:2009-10-30 16:05:40

6

就是低電壓電腦線啊

eddy current flawdetector - 渦流探傷儀 (0) 投訴

P:2021-07-03 10:23:59

7

RS-485通訊電纜(3x2x24AWG通訊電纜)阻燃 多股銅芯(7/0.20)聚乙烯絕緣聚氯乙烯護套,鋁塑復合帶+外鍍錫銅網編織(密度≥80%)鋼絲鎧裝。

Cisco - 思科 (0) 投訴

7


你需要登錄才能發(fā)表,點擊登錄。