交流額定電壓3kV及以下鐵路機(jī)車車輛用電纜(電線)
GB 12528-1990 JB/T 8145-1995
一、適用范圍
本產(chǎn)品采用橡皮絕緣,根據(jù)絕緣用橡皮的不同分為三個(gè)品種,主要適用于交流額定電壓3kV及以下鐵路機(jī)車車輛用電纜的電能傳輸和敷設(shè)連接用線,具有一定的耐油、耐寒、耐紫外線等特性。
二、產(chǎn)品結(jié)構(gòu)示意圖
三、使用特性
1、額定電壓U0/U為500V、750V、1kV、1.5kV和3kV。直流額定電壓為交流額定電壓的1.5倍。
2、電纜*允許工作溫度為: DCXF/2、DCH/3、DCEH/3產(chǎn)品為70℃;DCH/3-100,DCEH/3-100產(chǎn)品為100℃。
3、電纜zui低使用環(huán)境溫度:DCXF/2、DCH/3、DCEH/3、DCH/3-100、DCEH/3-100等產(chǎn)品應(yīng)不低于-25℃。
4、電纜敷設(shè)的允許彎曲半徑:
電纜外徑(D)為20mm及以下時(shí)應(yīng)不小于3D。
電纜外徑(D)為20mm以上時(shí)應(yīng)不小于5D。
四、電纜的型號(hào)及規(guī)格
1、電纜的型號(hào)見(jiàn)表1.
表1 電纜型號(hào)及名稱
序號(hào) | 型號(hào) | 額定電壓 | 名稱 |
1 | DCXF/2 | 750V、1.5kV | 銅芯天然丁苯橡皮絕緣氯丁橡皮護(hù)套鐵路機(jī)車車輛用電纜(電線) |
2 | DCH/3 | 750V | 銅芯氯磺化聚乙烯絕緣鐵路機(jī)車車輛用電纜(電線) |
3 | DCH/3-100 | 750V | 銅芯耐熱100℃氯磺化聚乙烯絕緣鐵路機(jī)車車輛用電纜(電線) |
4 | DCEH/3 | 750V、1.5kV、3kV | 銅芯乙丙絕緣氯磺化聚乙烯護(hù)套鐵路機(jī)車車輛用電纜(電線) |
5 | DCEH/3-100 | 750V、1.5kV、3kV | 銅芯耐熱100℃乙丙絕緣氯磺化聚乙烯護(hù)套鐵路機(jī)車車輛用電纜(電線) |
2、纜的規(guī)格見(jiàn)表2
表2 電纜的規(guī)格
序號(hào) | 型號(hào) | 額定電壓 | 規(guī)格mm2 |
1 | DCXF/2 | 750V,1.5kV | 1,1.5,2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300 |
2 | DCH/3,DCH/3-100 | 750V | 0.5,0.75,1,1.5,2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300 |
3 | DCEH/3,DCEH/3-100 | 750V | 0.5,0.75,1,1.5,2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300 |
4 | DCEH/3,DCEH/3-100 | 1.5kV | 1,1.5,2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300 |
3、代號(hào)名稱和含義如表3
表3 代號(hào)的名稱及含義
項(xiàng)目 | 代號(hào) | 說(shuō)明 |
系列代號(hào) | DC | 機(jī)車車輛用電纜(電線) |
絕緣材料 | X | 天然丁苯橡皮 |
E | 乙丙橡皮 | |
H | 氯磺化聚乙烯 | |
護(hù)套材料 | F | 氯丁橡皮 |
H | 氯磺化聚乙烯 | |
耐油特性 | 1 | 安裝在無(wú)礦物油和燃料油污染處 |
2 | 安裝在受礦物油污染,但無(wú)燃料油污染處 | |
3 | 安裝在受礦物油和燃料油污染處 | |
耐熱特性 | 70 | 耐熱70℃ |
100 | 耐熱100℃ | |
注:耐溫等級(jí)無(wú)明確標(biāo)注者為70℃。 |
五、主要技術(shù)特點(diǎn)
1、成品電纜導(dǎo)體直流電阻符合GB/T 3956-1983的有關(guān)規(guī)定。
2、20℃時(shí)絕緣電阻:額定電壓3kV的DCEH/3、DCEH/3-100型電纜應(yīng)不小于1013Ω.km。
3、成品電纜經(jīng)受如下交流電壓試驗(yàn)不擊穿:
表3 交流電壓試驗(yàn)
額定電壓 | 750V | 1.5kV | 3kV |
交流電壓試驗(yàn) | 2 kV/15min | 6 kV/15min | 12 kV/15min |
4、DCXF/2型電纜允許在受礦物油污染的環(huán)境使用;DCH/3、DCH/3-100、DCEH/3、DCEH/3-100型電纜允許在受礦物油和燃料油污染的環(huán)境使用。
六、 電纜基本結(jié)構(gòu)參數(shù)如表5所示:
表5 電纜結(jié)構(gòu)參數(shù)
型號(hào) | 導(dǎo)體標(biāo)稱截面mm2 | 導(dǎo)體結(jié)構(gòu)根數(shù)/單線直徑mm | 絕緣標(biāo)稱厚度mm | 護(hù)套標(biāo)稱厚度mm | 平均外徑mm | |
下限 | 上限 | |||||
DCXF/2 750V | 1(A) | 32/0.20 | 0.8 | 1.0 | 4.7 | 5.6 |
1(B) | 56/0.15 | 0.8 | 1.0 | 4.7 | 5.6 | |
1.5(A) | 30/0.25 | 0.8 | 1.0 | 4.9 | 6.0 | |
1.5(B) | 85/0.15 | 0.8 | 1.0 | 5.0 | 6.0 | |
2.5(A) | 50/0.25 | 0.8 | 1.0 | 5.6 | 6.8 | |
2.5(B) | 140/0.15 | 0.8 | 1.0 | 5.6 | 6.8 | |
4(A) | 56/0.30 | 0.8 | 1.0 | 5.8 | 7.0 | |
4(B) | 228/0.15 | 0.8 | 1.0 | 5.8 | 7.0 | |
6(A) | 84/0.30 | 0.8 | 1.0 | 6.4 | 8.4 | |
6(B) | 189/0.20 | 0.8 | 1.0 | 6.4 | 8.0 | |
10(A) | 80/0.40 | 1.0 | 1.2 | 8.2 | 10.5 | |
10(B) | 324/0.20 | 1.0 | 1.2 | 8.2 | 10.5 | |
16(A) | 126/0.40 | 1.0 | 1.2 | 9.2 | 12.0 | |
16(B) | 513/0.20 | 1.0 | 1.2 | 9.2 | 11.5 | |
25(A) | 196/0.40 | 1.2 | 1.2 | 10.5 | 14.0 | |
25(B) | 783/0.20 | 1.2 | 1.2 | 10.5 | 14.0 | |
35(A) | 276/0.40 | 1.2 | 1.5 | 12.5 | 16.0 | |
35(B) | 1107/0.20 | 1.2 | 1.5 | 12.5 | 16.0 | |
50(A) | 396/0.40 | 1.4 | 1.5 | 14.5 | 18.5 | |
50(B) | 702/0.30 | 1.4 | 1.5 | 14.5 | 18.5 | |
70(A) | 360/0.50 | 1.4 | 1.5 | 16.0 | 20.5 | |
70(B) | 999/0.30 | 1.4 | 1.5 | 16.0 | 20.5 | |
95(A) | 475/0.50 | 1.6 | 1.5 | 18.0 | 22.5 | |
95(B) | 1332/0.30 | 1.6 | 1.5 | 18.0 | 22.5 | |
120(A) | 608/0.50 | 1.6 | 2.0 | 20.5 | 25.5 | |
120(B) | 1702/0.30 | 1.6 | 2.0 | 20.5 | 25.5 | |
150(A) | 756/0.50 | 1.8 | 2.0 | 22.5 | 28.5 | |
150(B) | 2109/0.30 | 1.8 | 2.0 | 22.5 | 28.5 | |
185(A) | 925/0.50 | 2.0 | 2.0 | 24.5 | 30.5 | |
185(B) | 1443/0.40 | 2.0 | 2.0 | 24.5 | 30.5 | |
240(A) | 1221/0.50 | 2.2 | 2.0 | 27.5 | 34.0 | |
240(B) | 1891/0.40 | 2.2 | 2.0 | 27.5 | 34.0 | |
300(A) | 1525/0.50 | 2.4 | 2.0 | 30.0 | 37.5 | |
300(B) | 2379/0.40 | 2.4 | 2.0 | 30.0 | 37.5 | |
DCXF/2 1.5kV | 1.5(A) | 30/0.25 | 1.2 | 1.0 | 5.6 | 6.8 |
1.5(B) | 85/0.15 | 1.2 | 1.0 | 5.6 | 6.8 | |
2.5(A) | 50/0.25 | 1.2 | 1.0 | 6.2 | 7.2 | |
2.5(B) | 140/0.15 | 1.2 | 1.0 | 6.2 | 7.2 | |
4(A) | 56/0.30 | 1.2 | 1.0 | 6.6 | 7.8 | |
4(B) | 228/0.15 | 1.2 | 1.0 | 6.6 | 7.8 | |
6(A) | 84/0.30 | 1.2 | 1.0 | 7.2 | 9.4 | |
6(B) | 189/0.20 | 1.2 | 1.0 | 7.2 | 9.0 | |
10(A) | 80/0.40 | 1.4 | 1.2 | 9.0 | 11.5 | |
10(B) | 324/0.20 | 1.4 | 1.2 | 9.0 | 11.5 | |
16(A) | 126/0.40 | 1.4 | 1.2 | 10.0 | 13.0 | |
16(B) | 513/0.20 | 1.4 | 1.2 | 10.0 | 12.5 | |
25(A) | 196/0.40 | 1.6 | 1.5 | 12.0 | 15.5 | |
25(B) | 783/0.20 | 1.6 | 1.5 | 12.0 | 15.5 | |
35(A) | 276/0.40 | 1.6 | 1.5 | 13.0 | 17.0 | |
35(B) | 1107/0.20 | 1.6 | 1.5 | 13.0 | 17.0 | |
50(A) | 396/0.40 | 1.8 | 1.5 | 15.0 | 19.5 | |
50(B) | 702/0.30 | 1.8 | 1.5 | 15.0 | 19.0 | |
70(A) | 360/0.50 | 1.8 | 1.5 | 16.5 | 21.5 | |
70(B) | 999/0.30 | 1.8 | 1.5 | 17.0 | 21.0 | |
95(A) | 475/0.50 | 2.0 | 2.0 | 19.5 | 24.5 | |
95(B) | 1332/0.30 | 2.0 | 2.0 | 20.0 | 24.5 | |
120(A) | 608/0.50 | 2.0 | 2.0 | 21.5 | 26.5 | |
120(B) | 1702/0.30 | 2.0 | 2.0 | 21.5 | 26.5 | |
150(A) | 756/0.50 | 2.2 | 2.0 | 23.0 | 29.5 | |
150(B) | 2109/0.30 | 2.2 | 2.0 | 23.5 | 29.0 | |
185(A) | 925/0.50 | 2.4 | 2.0 | 25.5 | 31.5 | |
185(B) | 1443/0.40 | 2.4 | 2.0 | 25.5 | 31.5 | |
240(A) | 1221/0.50 | 2.6 | 2.0 | 28.0 | 35.0 | |
240(B) | 1891/0.40 | 2.6 | 2.0 | 28.5 | 35.0 | |
300(A) | 1525/0.50 | 2.8 | 2.0 | 31.0 | 38.5 | |
300(B) | 2379/0.40 | 2.8 | 2.0 | 31.0 | 38.0 | |
DCH/3 750V DCH/3-100 750V | 0.5(A) | 16/0.20 | 1.0 |
|
| 3.4 |
0.5(B) | 28/0.15 | 1.0 |
|
| 3.4 | |
0.75(A) | 24/0.20 | 1.0 |
|
| 3.8 | |
0.75(B) | 42/0.15 | 1.0 |
|
| 3.8 | |
1.0(A) | 32/0.20 | 1.2 |
|
| 4.4 | |
1.0(B) | 56/0.15 | 1.2 |
|
| 4.4 | |
1.5(A) | 30/0.25 | 1.2 |
|
| 4.7 | |
1.5(B) | 85/0.15 | 1.2 |
|
| 4.7 | |
2.5(A) | 50/0.25 | 1.2 |
|
| 5.2 | |
2.5(B) | 140/0.15 | 1.2 |
|
| 5.2 | |
4(A) | 56/0.30 | 1.2 |
|
| 6.0 | |
4(B) | 228/0.15 | 1.2 |
|
| 6.0 | |
6(A) | 84/0.30 | 1.2 |
|
| 7.4 | |
6(B) | 189/0.20 | 1.2 |
|
| 7.4 | |
10(A) | 80/0.40 | 1.4 |
|
| 9.0 | |
10(B) | 324/0.20 | 1.4 |
|
| 9.0 | |
16(A) | 126/0.40 | 1.4 |
|
| 10.5 | |
16(B) | 513/0.20 | 1.4 |
|
| 10.0 | |
25(A) | 196/0.40 | 1.6 |
|
| 12.5 | |
25(B) | 783/0.20 | 1.6 |
|
| 12.5 | |
35(A) | 276/0.40 | 1.6 |
|
| 14.0 | |
35(B) | 1107/0.20 | 1.6 |
|
| 14.0 | |
50(A) | 396/0.40 | 1.8 |
|
| 16.5 | |
50(B) | 702/0.30 | 1.8 |
|
| 16.0 | |
70(A) | 360/0.50 | 1.8 |
|
| 18.5 | |
70(B) | 999/0.30 | 1.8 |
|
| 18.0 | |
95(A) | 475/0.50 | 2.0 |
|
| 20.5 | |
95(B) | 1332/0.30 | 2.0 |
|
| 20.5 | |
120(A) | 608/0.50 | 2.0 |
|
| 22.5 | |
120(B) | 1702/0.30 | 2.0 |
|
| 22.5 | |
150(A) | 756/0.50 | 2.2 |
|
| 25.5 | |
150(B) | 2109/0.30 | 2.2 |
|
| 25.0 | |
185(A) | 925/0.50 | 2.4 |
|
| 27.5 | |
185(B) | 1443/0.40 | 2.4 |
|
| 27.5 | |
240(A) | 1221/0.50 | 2.6 |
|
| 31.0 | |
240(B) | 1891/0.40 | 2.6 |
|
| 31.0 | |
300(A) | 1525/0.50 | 2.8 |
|
| 34.0 | |
300(B) | 2379/0.40 | 2.8 |
|
| 34.0 | |
DCEH/3 750V DCEH/3-100 750V | 0.5(A) | 16/0.20 | 0.6 | 0.6 | 3.2 | 4.4 |
0.5(B) | 28/0.15 | 0.6 | 0.6 | 3.2 | 4.4 | |
0.75(A) | 24/0.20 | 0.6 | 0.6 | 3.4 | 4.7 | |
0.75(B) | 42/0.15 | 0.6 | 0.6 | 3.4 | 4.7 | |
1.0(A) | 32/0.20 | 0.6 | 0.6 | 3.5 | 4.9 | |
1.0(B) | 56/0.15 | 0.6 | 0.6 | 3.5 | 4.9 | |
1.5(A) | 30/0.25 | 0.6 | 0.6 | 3.7 | 5.4 | |
1.5(B) | 85/0.15 | 0.6 | 0.6 | 3.8 | 5.4 | |
2.5(A) | 50/0.25 | 0.7 | 0.6 | 4.4 | 6.2 | |
2.5(B) | 140/0.15 | 0.7 | 0.6 | 4.4 | 6.2 | |
4(A) | 56/0.30 | 0.7 | 0.6 | 5.0 | 6.8 | |
4(B) | 228/0.15 | 0.7 | 0.6 | 5.0 | 6.8 | |
6(A) | 84/0.30 | 0.7 | 0.6 | 5.4 | 7.8 | |
6(B) | 189/0.20 | 0.7 | 0.6 | 5.4 | 7.8 | |
10(A) | 80/0.40 | 0.8 | 0.8 | 7.0 | 9.0 | |
10(B) | 324/0.20 | 0.8 | 0.8 | 7.0 | 9.0 | |
16(A) | 126/0.40 | 0.8 | 0.8 | 8.0 | 10.5 | |
16(B) | 513/0.20 | 0.8 | 0.8 | 8.0 | 10.5 | |
25(A) | 196/0.40 | 1.0 | 1.0 | 10.0 | 13.0 | |
25(B) | 783/0.20 | 1.0 | 1.0 | 10.0 | 13.0 | |
35(A) | 276/0.40 | 1.0 | 1.0 | 11.0 | 14.5 | |
35(B) | 1107/0.20 | 1.0 | 1.0 | 11.0 | 14.5 | |
50(A) | 396/0.40 | 1.2 | 1.2 | 13.5 | 17.0 | |
50(B) | 702/0.30 | 1.2 | 1.2 | 13.5 | 17.0 | |
70(A) | 360/0.50 | 1.2 | 1.2 | 15.0 | 19.5 | |
70(B) | 999/0.30 | 1.2 | 1.2 | 15.0 | 19.5 | |
95(A) | 475/0.50 | 1.4 | 1.4 | 17.5 | 21.5 | |
95(B) | 1332/0.30 | 1.4 | 1.4 | 17.5 | 21.5 | |
120(A) | 608/0.50 | 1.4 | 1.4 | , 19.0 | 23.5 | |
120(B) | 1702/0.30 | 1.4 | 1.4 | 19.0 | 23.5 | |
150(A) | 756/0.50 | 1.8 | 1.8 | 22.0 | 28.0 | |
150(B) | 2109/0.30 | 1.8 | 1.8 | 22.5 | 28.0 | |
185(A) | 925/0.50 | 1.8 | 1.8 | 23.5 | 29.5 | |
185(B) | 1443/0.40 | 1.8 | 1.8 | 23.5 | 29.5 | |
240(A) | 1221/0.50 | 2.2 | 2.2 | 28.0 | 34.0 | |
240(B) | 1891/0.40 | 2.2 | 2.2 | 28.0 | 34.0 | |
300(A) | 1525/0.50 | 2.2 | 2.2 | 30.0 | 37.0 | |
300(B) | 2379/0.40 | 2.2 | 2.2 | 30.0 | 37.0 | |
DCEH/3 1.5kV DCEH/3-100 1.5kV | 1.0(A) | 32/0.20 | 0.8 | 0.8 | 4.3 | 6.0 |
1.0(B) | 56/0.15 | 0.8 | 0.8 | 4.3 | 6.0 | |
1.5(A) | 30/0.25 | 0.8 | 0.8 | 4.5 | 6.6 | |
1.5(B) | 85/0.15 | 0.8 | 0.8 | 4.6 | 6.6 | |
2.5(A) | 50/0.25 | 0.9 | 0.9 | 5.0 | 7.6 | |
2.5(B) | 140/0.15 | 0.9 | 0.9 | 5.2 | 7.6 | |
4(A) | 56/0.30 | 0.9 | 0.9 | 5.8 | 8.2 | |
4(B) | 228/0.15 | 0.9 | 0.9 | 5.8 | 8.2 | |
6(A) | 84/0.30 | 0.9 | 0.9 | 6.4 | 9.0 | |
6(B) | 189/0.20 | 0.9 | 0.9 | 6.4 | 8.8 | |
10(A) | 80/0.40 | 1.0 | 1.0 | 8.0 | 9.8 | |
10(B) | 324/0.20 | 1.0 | 1.0 | 7.8 | 9.8 | |
16(A) | 126/0.40 | 1.0 | 1.0 | 8.8 | 11.5 | |
16(B) | 513/0.20 | 1.0 | 1.0 | 8.8 | 11.0 | |
25(A) | 196/0.40 | 1.2 | 1.2 | 10.5 | 13.5 | |
25(B) | 783/0.20 | 1.2 | 1.2 | 10.5 | 13.5 | |
35(A) | 276/0.40 | 1.2 | 1.2 | 12.0 | 15.0 | |
35(B) | 1107/0.20 | 1.2 | 1.2 | 12.0 | 15.0 | |
50(A) | 396/0.40 | 1.4 | 1.4 | 14.0 | 18.0 | |
50(B) | 702/0.30 | 1.4 | 1.4 | 14.0 | 18.0 | |
70(A) | 360/0.50 | 1.4 | 1.4 | 16.0 | 20.5 | |
70(B) | 999/0.30 | 1.4 | 1.4 | 16.0 | 19.5 | |
95(A) | 475/0.50 | 1.6 | 1.6 | 18.0 | 22.5 | |
95(B) | 1332/0.30 | 1.6 | 1.6 | 18.5 | 22.5 | |
120(A) | 608/0.50 | 1.6 | 1.6 | 19.5 | 24.5 | |
120(B) | 1702/0.30 | 1.6 | 1.6 | 20.0 | 24.5 | |
150(A) | 756/0.50 | 2.0 | 1.8 | 22.5 | 29.0 | |
150(B) | 2109/0.30 | 2.0 | 1.8 | 22.5 | 28.0 | |
185(A) | 925/0.50 | 2.0 | 1.8 | 24.0 | 30.0 | |
185(B) | 1443/0.40 | 2.0 | 1.8 | 24.0 | 30.0 | |
240(A) | 1221/0.50 | 2.4 | 2.4 | 28.5 | 35.0 | |
240(B) | 1891/0.40 | 2.4 | 2.4 | 28.5 | 35.0 | |
300(A) | 1525/0.50 | 2.4 | 2.4 | 31.0 | 38.0 | |
300(B) | 2379/0.40 | 2.4 | 2.4 | 31.0 | 38.0 | |
DCEH/3 3kV DCEH/3-100 3kV | 2.5(A) | 50/0.25 | 1.4 | 1.2 | 7.0 | 8.6 |
2.5(B) | 140/0.15 | 1.4 | 1.2 | 7.0 | 8.6 | |
4(A) | 56/0.30 | 1.4 | 1.2 | 7.4 | 9.2 | |
4(B) | 228/0.15 | 1.4 | 1.2 | 7.4 | 9.2 | |
6(A) | 84/0.30 | 1.4 | 1.2 | 8.0 | 10.5 | |
6(B) | 189/0.20 | 1.4 | 1.2 | 8.0 | 10.0 | |
10(A) | 80/0.40 | 1.6 | 1.2 | 9.4 | 11.5 | |
10(B) | 324/0.20 | 1.6 | 1.2 | 9.4 | 11.5 | |
16(A) | 126/0.40 | 1.6 | 1.2 | 10.0 | 13.0 | |
16(B) | 513/0.20 | 1.6 | 1.2 | 10.0 | 12.5 | |
25(A) | 196/0.40 | 1.8 | 1.4 | 12.0 | 15.5 | |
25(B) | 783/0.20 | 1.8 | 1.4 | 12.0 | 15.5 | |
35(A) | 276/0.40 | 1.8 | 1.4 | 13.5 | 17.0 | |
35(B) | 1107/0.20 | 1.8 | 1.4 | 13.5 | 17.0 | |
50(A) | 396/0.40 | 2.0 | 1.8 | 16.0 | 20.0 | |
50(B) | 702/0.30 | 2.0 | 1.8 | 16.0 | 20.0 | |
70(A) | 360/0.50 | 2.0 | 1.8 | 17.5 | 22.5 | |
70(B) | 999/0.30 | 2.0 | 1.8 | 18.0 | 22.0 | |
95(A) | 475/0.50 | 2.2 | 2.0 | 20.0 | 24.5 | |
95(B) | 1332/0.30 | 2.2 | 2.0 | 20.0 | 24.5 | |
120(A) | 608/0.50 | 2.2 | 2.0 | 21.5 | 26.5 | |
120(B) | 1702/0.30 | 2.2 | 2.0 | 22.0 | 26.5 | |
150(A) | 756/0.50 | 2.6 | 2.2 | 24.5 | 30.5 | |
150(B) | 2109/0.30 | 2.6 | 2.2 | 24.5 | 30.5 | |
185(A) | 925/0.50 | 2.6 | 2.2 | 26.0 | 32.0 | |
185(B) | 1443/0.40 | 2.6 | 2.2 | 26.0 | 32.0 | |
240(A) | 1221/0.50 | 3.0 | 2.8 | 30.5 | 37.0 | |
240(B) | 1891/0.40 | 3.0 | 2.8 | 30.5 | 37.0 | |
300(A) | 1525/0.50 | 3.0 | 2.8 | 33.0 | 40.0 | |
300(B) | 2379/0.40 | 3.0 | 2.8 | 32.5 | 40.0 |
八、電纜交貨長(zhǎng)度
1、成品電纜應(yīng)成盤或成圈交貨,卷繞整齊,妥善包裝。長(zhǎng)度誤差應(yīng)不超過(guò)±0.5%。
2、根據(jù)雙方協(xié)議,允許任何長(zhǎng)度的電纜交貨。