目前7类网络线的性能指标要求是多少？

电线电缆网 > 通讯电缆 > 目前7类网络线的性能指标要求是多少？（完整版）

目前7类网络线的性能指标要求是多少？ - 无图版

cuijiude --- 2007-04-02 13:46:54
1

目前7类网络线的性能指标要求是多少？满足要求的最小线规号是多少，我们接到一个样品要用27AWG，很难达到要求啊

李小龍 --- 2007-04-02 13:48:56
2

如果說單單就使用短線規格來說,28AWG都可以,

不過如果是Solid佈線,那麼最少要做到23AWG

michael --- 2007-04-02 13:59:43
3

二位都是专家

le1244 --- 2007-04-02 14:09:59
4

现在7类线标准还没出来吧

李小龍 --- 2007-04-02 14:53:46
5

讓Michael 見笑了,不好意思

cuijiude --- 2007-04-03 11:04:43
6

我手上有一份讨论稿，27AWG很难达到啊

michael --- 2007-04-03 15:00:38
7

好象27号的很难通过的,到底如何有谁更清楚

panxingkui --- 2007-04-03 15:26:08
8

我们公司目前线径是0.6，

yangzheng --- 2007-04-03 16:05:46
9

都是专家

卓一航 --- 2007-04-03 17:19:55
10

panxingkui:
我们公司目前线径是0.6，

0.6?什麼線徑？

cuijiude --- 2007-04-03 17:37:28
11

導體線徑啊

fleaxu --- 2007-04-03 21:41:33
12

27号线规的是很容易通过的啊，不过26号线规的就比较难通过了啊

cuijiude --- 2007-04-04 08:24:01
13

没有道理，26AWG的导体规格更大，怎么反而不容易通过了

zhanghj012 --- 2007-04-09 11:22:42
14

大就更容易拉伸，线径不容易控制

cuijiude --- 2007-04-10 08:12:41
15

设备连接用

ANGEL0928 --- 2007-04-14 16:22:46
16

我们曾试验过,多少线径我忘了,那是在02还是03年的事了,用的是皮泡沫皮单线.

dingmoba --- 2007-04-17 13:04:06
17

我刚才上传了7类的标准,不知道为何去了回收站...各位有需要的发邮件给我.

dingmoba --- 2007-04-17 13:13:54
18

7类网络线的标准EN早在2000年就做出了draft版本.

4 Cable construction

4.1 Conductor

Theconductor shall be solid copper and meet the requirements of 4.1 of EN50288-1. The conductor shall be plain or metal coated.

Thenominal conductor diameter shall be ³0,4 mm and £0,8 mm.

4.2 Insulation

Theinsulation shall be of a suitable material according to the appropriate part orEN50290-2-1.

4.3 Cabling elements

The cable elementshall be a pair or a quad.

4.4 Identification of cabling elements

Unlessotherwise specified, the colour coding for identification is given in IEC60189-2 or IEC 60708‑1, as appropriate. The colours shall meet the requirements of 4.4 of EN50288-1.

4.5 Screening of cabling elements

Whereappropriate, screening of the cabling elements shall be applied in accordancewith 4.5 of EN50288-1. When a braidis used the minimum braid coverage (for mechanical purposes) shall be 60%. Whena foil and braid are used the minimum braid coverage (for mechanical purposes)shall be 30%. Coverage is defined in EN50290-2.

4.6 Cable make-up

Thecable elements shall be laid up in concentric layer(s) or units to form the cablecore.

4.7 Filling compound

Notapplicable

4.8 Interstitial fillers

Wherefillers are used they shall meet the requirements of 4.8 of EN50288-1.

4.9 Screening of the cable core

Thescreening of the cable core shall be applied in accordance with 4.9 of EN50288-1. When a braid is usedthe minimum braid coverage (for mechanical purposes) shall be 60%. When a foiland braid are used, and/or where a foil is used over each cabling element, theminimum braid coverage (for mechanical purposes) shall be 30%. Coverage isdefined in EN50290-2.

4.10 Moisture barriers

Notapplicable

4.11 Wrapping layers

Where wrapping layersare used they shall be in accordance with 4.11of EN50288-1.

4.12 Sheath

Thesheath shall be of a suitable material according to the appropriate part of EN50290-2-1.

5 Test methods and requirements for completedcables

Thefollowing tables give the tests to be applied, together with the respectivelimits, in order to demonstrate compliance with this specification.

5.1 Electrical tests

5.1.1 Low-frequency and d.c. electricalmeasurements

EN 50288-1 Clause	Parameter	Requirement
5.1.1.1	Conductor loop resistance	The maximum value shall be £ 19W/100 m.
5.1.1.2	Conductor resistance unbalance	£ 2%
5.1.1.3	Dielectric strength - conductor/conductor and conductor/screen	1.6 kV d.c. or 1kV a.c. for 1 min. or 2.5 kV d.c. or 1.7 kV a.c. for 2 sec.
5.1.1.4	Insulation resistance	³ 500 MW km using 100-500V test voltage
5.1.1.5	Mutual capacitance	No requirement specified
5.1.1.6	Capacitance unbalance to earth	£ 1600 pF/km

5.1.2 High-frequencyelectrical and transmission measurements

(f is Frequency inMHz)

50288-1

Clause no.

Parameter

Requirement

5.1.2.1

Velocity of Propagation

Phase Delay £ 534 +36/√f ns/100m, 1MHz£f£600MHz

5.1.2.2

Propagation delay

difference (skew)

£ 25 ns/100 m at 100 MHz

1	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
2.0	3.6	5.7	7.2	8.1	10.1	14.5	18.5	23.4	26.8	33.4	49.0	dB/100m

(a£1.75Öf+0.01f+0.2/Öf), 1MHz£f£600MHz

</div>

5.1.2.3

Longitudinal Attenuation^{4) 5) 6)}

1	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
80.0	80.0	80.0	80.0	80.0	79.6	75.1	72.4	69.6	67.9	65.3	60.8	dB

³80.0dB’s 1MHz³f<31.25MHz, 80. -15logf /31.25 31.25MHz≤ f£600MHz

</div>

5.1.2.5

Near-end Crosstalk

(NEXT)^{2) 3) 4)}

1	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
77.0	77.0	77.0	77.0	77.0	77.0	72.5	69.4	66.6	64.9	62.3	57.8	dB

³77.0 1MHz≤f<31.25MHz 77.0-15logf /31.25 31.25MHz≤f£600MHz

</div>

5.1.2.7.1

Power sum Near-end Crosstalk ^{2) ) 4)}(PSNEXT)

1	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
80.0	80.0	72.0	67.9	66.0	62.1	56.1	52.0	48.2	46.0	42.5	36.4	dB

≥80dB’s1MHz≤f≥4MHz 92-20logf,4MHzf£600MHz, Values ref. to 100m

</div>

5.1.2.6

Equal Level Far-end Crosstalk^{2) 3) 4)}

(ELFEXT)

1	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
77.0	77.0	69.0	64.9	63.0	59.1	53.1	49.0	45.2	43.0	39.5	33.4	dB

³89-20logf,4MHz<f£ 600MHz (77dB max.), Values ref. to 100m

</div>

5.1.2.7.2

Power Sum Equal Level Far-end Crosstalk^{2) 4)}(PSELFEXT)

5.1.2.8

Characteristic Impedance⁷⁾ f.f.s

Input impedance, 100, 120 ± 15 W, 4MHz £ f £ 100 MHz;

100, 120 ± 18 W, 100MHz < f £ 250 MHz;

100, 120 ± 25 W, 250MHz < f £ 600 MHz;

Mean impedance, 100, 120 ± 5W, @ 100 MHz

	4	10	16	20	31,25	62,5	100	155	200	300	600	MHz
	23.0	23.0	23.0	23.0	23.0	23.0	23.0	21.5	21.5	20.7	17.7	dB

³ 23dB 4MHz£ f £ 100MHz, ³ 21.5dB 100MHz< f £ 250MHz

³ 17.4dB, 250MHz < f £ 600 MHz

</div>

5.1.2.9

Return loss ^{4) 7)} f.f.s

5.1.2.4

Near End Unbalance Attenuation

³40-10log(f) dB, 1MHz£f£600MHz f.f.s

(note values based on 100m, not directly comparable with 5.1.2.10 based 0n 6-10m)

5.1.2.10

Coupling attenuation

³ 80 dB, 30MHz £ f £ 100 MHz f.f.s

³ 80 - 20 log (f/100) dB, 100MHz<f£1000MHz f.f.s

5.1.2.11

Transfer impedance¹⁾

£ 15 mW/m at 1 MHz; £ 10 mW/m at 10 MHz; £ 30 mW/m at 30 MHz

5.1.2.12

Screening attenuation

³ 55 dB, 30MHz £ f £ 600 MHz f.f.s (Note - measured to 1 GHz)

^Notes

1) Itis anticipated that screening attenuation will cover the values of transferimpedance at higher frequencies than specified.

2) Meetingthe pair-to-pair requirements does not guarantee meeting the power sumrequirements

3) Forhybrid and multi-unit cables and cables, PSNEXT between all non fibrerecognised cable units shall be 3 dB better than the specified pair to pairNEXT at all specified frequencies.

4) Thevalues in the table are for information only. The formula given shall be usedto determine compliance, rounded to one decimal place

5) Theattenuation shall meet values adjusted for temperature up to 60°Cwith a temperature coefficient of 0.2% per degree rise above 20°C

6) Valuesbetween 1MHz and 4MHz are for information only.

5.2 Mechanicaltests

EN 50288-1 Clause	Parameter	Requirement
5.2.1	Conductor elongation at break EN50289-3-2	³10%
5.2.2	Shrinkage of insulation EN50289-3-4	£5% for 1 h at 100 ± 2°C
5.2.3	Crush resistance of the cable EN50289-3-5	1000N/1 minute/100mm Near end Crosstalk, Return Loss and Characteristic Impedance shall remain within the specified limits
5.2.4	Impact resistance of the cable EN50289-3-6	12.5mm radius/1J/3 impacts Near end Crosstalk, Return Loss and Characteristic Impedance shall remain within the specified limits
5.2.5	Abrasion resistance of the sheath markings EN50289-3-8	Markings shall remain legible
5.2.6	Simulated installation testing of the cable
5.2.6.1	Simulated installation testing of the cable EN50289-3-9 Clause 4	Single Bend 4xdia/10 turns/2 cycles Near end Crosstalk, Return Loss and Characteristic Impedance and Coupling Attenuation (u/c) shall remain within the specified limits
5.2.6.2	Simulated installation testing of the cable EN50289-3-9 Clause 8	“S” Bend 8xdia/100m/1 cycle/120 deg/1 m/s Near end Crosstalk, Return Loss and Characteristic Impedance and Coupling Attenuation (u/c) shall remain within the specified limits
5.2.7	Tensile performance EN50289-3-16 Combined with 5.2.6	Load shall be 25N per pair (i.e.100N 4 Pair). Near end Crosstalk, Return Loss and Characteristic Impedance and Coupling Attenuation (u/c) shall remain within the specified limits

5.3 Environmentaltests

EN 50288-1

Clause no.

Parameter

Requirement

5.3.1

Cold bend performance of the cable

EN50289-3-9

Mandrel diameter 15 X OD, No of turns 4, Temp -15˚C±2˚C

No cracks when examined visually without magnification

5.3.2

Temperature Cycling

EN50289-4-6

The attenuation shall meet the adjusted values according to note 8 in table 5.1.2 when subjected to 2 temperature cycles between 20˚C & 60˚C

5.4 Fire performance test methods

When intendedto be permanently installed in buildings these cables fall under therequirements of the Construction Products Directive (CPD) for reaction to fire.Appropriate requirements are to be found in EN50290-4-1.

stevedf --- 2007-04-18 20:45:47
19

最难解决的是线对铝箔包覆质量。我们曾花了半年时间才解决这个问题，

free0123 --- 2007-04-21 14:15:03
20

希望大家不要误导:我们平时所说的几类缆,是要求能满足布线需要的前提下分类.如CAT5 CAT6 等要求能在100m长度范围内满足相应的传输性能要求

楼上说的27AWG做出来的线能叫七类缆吗?

电缆的传输能力与长度和电气指标均有关.如果只考虑20cm内传输,目前有一种电缆其导体直径只有0.08mm,传输频率高达1000MHz,那么你能说这是几类缆.

lsr66 --- 2007-04-23 08:56:08
21

继续讨论,

cuijiude --- 2007-04-23 12:56:54
22

Solid 与Patch cord的使用用途不同，谁有关于C7部分patch cord的相关性能数据？

YM666621 --- 2007-04-28 11:13:08
23

能共享一些５类６类线的工艺吗

youyucs63 --- 2007-07-20 21:04:05
24

CAT5 和CAT6有什么区别

limingxing --- 2007-07-30 18:03:27
25

一般是指传输频率5-100MHZ。6--250MHZ吧。

7类国内目前是不使用的，只有欧洲几个国家在用。

rhythmboy --- 2007-07-31 08:14:35
26


dingmoba

可以传一份给我吗？

timcai@cablemaker.net

mongolian --- 2007-07-31 16:01:39
27

cuijiude:
没有道理，26AWG的导体规格更大，怎么反而不容易通过了

就是啊,楼主能说说你的道理吗?

mongolian --- 2007-07-31 16:03:42
28

支持!

zhl --- 2007-08-02 15:08:30
29

dingmoba:
我刚才上传了7类的标准,不知道为何去了回收站...各位有需要的发邮件给我.

麻烦发一份给我，学习一下，谢谢！

juan105529@sohu.com

WL1986 --- 2008-05-20 20:10:03
30

0.584.

取个名字难 --- 2008-05-21 14:36:04
31

用27AWG的!先能过6类标准再说吧!!

电线电缆网 > 通讯电缆 > 目前7类网络线的性能指标要求是多少？（完整版）

目前7类网络线的性能指标要求是多少？ - 无图版

cuijiude --- 2007-04-02 13:46:541

李小龍 --- 2007-04-02 13:48:562

michael --- 2007-04-02 13:59:433

le1244 --- 2007-04-02 14:09:594

李小龍 --- 2007-04-02 14:53:465

cuijiude --- 2007-04-03 11:04:436

michael --- 2007-04-03 15:00:387

panxingkui --- 2007-04-03 15:26:088

yangzheng --- 2007-04-03 16:05:469

卓一航 --- 2007-04-03 17:19:5510

cuijiude --- 2007-04-03 17:37:2811

fleaxu --- 2007-04-03 21:41:3312

cuijiude --- 2007-04-04 08:24:0113

zhanghj012 --- 2007-04-09 11:22:4214

cuijiude --- 2007-04-10 08:12:4115

ANGEL0928 --- 2007-04-14 16:22:4616

dingmoba --- 2007-04-17 13:04:0617

dingmoba --- 2007-04-17 13:13:5418

Clause

stevedf --- 2007-04-18 20:45:4719

free0123 --- 2007-04-21 14:15:0320

lsr66 --- 2007-04-23 08:56:0821

cuijiude --- 2007-04-23 12:56:5422

YM666621 --- 2007-04-28 11:13:0823

youyucs63 --- 2007-07-20 21:04:0524

limingxing --- 2007-07-30 18:03:2725

rhythmboy --- 2007-07-31 08:14:3526

mongolian --- 2007-07-31 16:01:3927

mongolian --- 2007-07-31 16:03:4228

zhl --- 2007-08-02 15:08:3029

WL1986 --- 2008-05-20 20:10:0330

取个名字难 --- 2008-05-21 14:36:0431

-- 结束 --

cuijiude --- 2007-04-02 13:46:54
1

李小龍 --- 2007-04-02 13:48:56
2

michael --- 2007-04-02 13:59:43
3

le1244 --- 2007-04-02 14:09:59
4

李小龍 --- 2007-04-02 14:53:46
5

cuijiude --- 2007-04-03 11:04:43
6

michael --- 2007-04-03 15:00:38
7

panxingkui --- 2007-04-03 15:26:08
8

yangzheng --- 2007-04-03 16:05:46
9

卓一航 --- 2007-04-03 17:19:55
10

cuijiude --- 2007-04-03 17:37:28
11

fleaxu --- 2007-04-03 21:41:33
12

cuijiude --- 2007-04-04 08:24:01
13

zhanghj012 --- 2007-04-09 11:22:42
14

cuijiude --- 2007-04-10 08:12:41
15

ANGEL0928 --- 2007-04-14 16:22:46
16

dingmoba --- 2007-04-17 13:04:06
17

dingmoba --- 2007-04-17 13:13:54
18

stevedf --- 2007-04-18 20:45:47
19

free0123 --- 2007-04-21 14:15:03
20

lsr66 --- 2007-04-23 08:56:08
21

cuijiude --- 2007-04-23 12:56:54
22

YM666621 --- 2007-04-28 11:13:08
23

youyucs63 --- 2007-07-20 21:04:05
24

limingxing --- 2007-07-30 18:03:27
25

rhythmboy --- 2007-07-31 08:14:35
26

mongolian --- 2007-07-31 16:01:39
27

mongolian --- 2007-07-31 16:03:42
28

zhl --- 2007-08-02 15:08:30
29

WL1986 --- 2008-05-20 20:10:03
30

取个名字难 --- 2008-05-21 14:36:04
31