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電線電纜網(wǎng) > 通訊電纜 > 目前7類網(wǎng)絡線的性能指標要求是多少？（完整版）

目前7類網(wǎng)絡線的性能指標要求是多少？ - 無圖版

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

目前7類網(wǎng)絡線的性能指標要求是多少？滿足要求的最小線規(guī)號是多少，我們接到一個樣品要用27AWG，很難達到要求啊

李小龍 --- 2007-04-02 13:48:56
2

如果說單單就使用短線規(guī)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

二位都是專家

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

現(xiàn)在7類線標準還沒出來吧

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

我手上有一份討論稿，27AWG很難達到啊

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

好象27號的很難通過的,到底如何有誰更清楚

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

我們公司目前線徑是0.6，

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

都是專家

卓一航 --- 2007-04-03 17:19:55
10

panxingkui:
我們公司目前線徑是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號線規(guī)的是很容易通過的啊，不過26號線規(guī)的就比較難通過了啊

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

沒有道理，26AWG的導體規(guī)格更大，怎么反而不容易通過了

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

大就更容易拉伸，線徑不容易控制

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

設備連接用

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

我們曾試驗過,多少線徑我忘了,那是在02還是03年的事了,用的是皮泡沫皮單線.

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

我剛才上傳了7類的標準,不知道為何去了回收站...各位有需要的發(fā)郵件給我.

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

7類網(wǎng)絡線的標準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

最難解決的是線對鋁箔包覆質(zhì)量。我們曾花了半年時間才解決這個問題，

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

希望大家不要誤導:我們平時所說的幾類纜,是要求能滿足布線需要的前提下分類.如CAT5 CAT6 等要求能在100m長度范圍內(nèi)滿足相應的傳輸性能要求

樓上說的27AWG做出來的線能叫七類纜嗎?

電纜的傳輸能力與長度和電氣指標均有關.如果只考慮20cm內(nèi)傳輸,目前有一種電纜其導體直徑只有0.08mm,傳輸頻率高達1000MHz,那么你能說這是幾類纜.

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

繼續(xù)討論,

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

Solid 與Patch cord的使用用途不同，誰有關于C7部分patch cord的相關性能數(shù)據(jù)？

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

能共享一些５類６類線的工藝嗎

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

CAT5 和CAT6有什么區(qū)別

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

一般是指傳輸頻率5-100MHZ。6--250MHZ吧。

7類國內(nèi)目前是不使用的，只有歐洲幾個國家在用。

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


dingmoba

可以傳一份給我嗎？

timcai@cablemaker.net

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

cuijiude:
沒有道理，26AWG的導體規(guī)格更大，怎么反而不容易通過了

就是啊,樓主能說說你的道理嗎?

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

支持!

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

dingmoba:
我剛才上傳了7類的標準,不知道為何去了回收站...各位有需要的發(fā)郵件給我.

麻煩發(fā)一份給我，學習一下，謝謝！

juan105529@sohu.com

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

0.584.

取個名字難 --- 2008-05-21 14:36:04
31

用27AWG的!先能過6類標準再說吧!!

電線電纜網(wǎng) > 通訊電纜 > 目前7類網(wǎng)絡線的性能指標要求是多少？（完整版）

目前7類網(wǎng)絡線的性能指標要求是多少？ - 無圖版

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

取個名字難 --- 2008-05-21 14:36:0431

-- 結(jié)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

取個名字難 --- 2008-05-21 14:36:04
31