扩径导线

扩径导线

Center Enlarged Conductor

一、标准

本产品按照企业Q/SX112-2003标准生产。 Standard

The product meets the Enterprise Standard Q/SX112-2003.

二、名称、型号及适用范围

Designation, Type and Main Applications 名称 Designation 扩径导线 Center Enlarged Conductor 新型软母线 New Flexible Bus Conductor

三、导线结构示意图 Structure drawing

LGKK型扩径导线横截面图(图一) Center Enlarged Conductor type LGKK

型号Type LGKK LGJK 适用范围Main Applications 适于200～500kV电站软母线。 Suitable for flexible bus conductor of power station with voltage 200～500kV.

LGJK型扩径导线横截面图(图二) Center Enlarged Conductor type LGJK

四、结构及主要技术参数

Construction and main Technical Specifications LGKK型扩径导线

Center Enlarged Conductor type LGKK 型号、规格 Type 导线外径 Overall Diameter (mm) 计算截面积 Calculated Area (mm2) 导线结构根数/直径 Structure 铝 Al. 钢St. 总计 Total 中心支撑金属软管外径 Central Diameter of Flexible Metal Tube LGKK-587 51 585.7 49.5 636.2 39.0 35/3.0 LGKK-900 49 906.4 84.83 991.23 27.0 18/3.0 LGKK-1400 57 1387.8 105.0 1493.8 27.0 15/3.0 内层 铝 Al. Number/ Diameter (mm) Inner Layer 钢St. 7/3.0 48/3.0 - - 137 71.54 20.6 0.0514 750 2711 12/3.0 28/4.0 3/4.0 - 205 58.7 20.4 0.03317 120 3650 15/3.0 28/4.0 34/4.0 40/4.0 289 58.02 20.8 0.02163 1290 5159 次内层，铝 Next to Inner Layer (Al.) 次外层，铝 Next to Outer Layer (Al.) 最外层，铝 Outmost Layer (Al.) 计算总拉断力 Calculated total breaking load (kN) 弹性系数 Final modulus of elasticity (kN/mm2) 线膨胀系数 Coefficient of linear expansion (10-6/℃) 20℃直流电阻 DC resistance at 20℃ (Ω/km) 70℃载流量 Current at 70℃ (A) 单位重量 Linear mass (kg/km) LGJK型新型软母线

New Flexible Bus Conductor Type LGJK 型号、规格 Type 导线外径 Overall Diameter (mm) 标称截面积 Nominal Area (mm2) 计算截面积 Calculated Area (mm2) 导线结构根数/直径 Structure Number/ Diameter (mm) 铝 Al. 钢St. 总计 Total 中心铜丝Central St. 内层，铝(支撑层) Inner Layer (Al.) LGJK-630 LGJK-800 48 630 535.43 125.81 788.24 19/3.2 4/4.55 4/4.55 11/3.70 36/3.70 228 67.8 15.5 0.046433 815 2994 49 800 613.24 152.81 966.23 19/3.2 4/4.50 4/4.60 24/3.80 36/3.80 253 64.2 16.2 0.036179 904 3491 LGJK-1000 LGJK-1250 LGJK-1400 51 1000 1001.40 152.81 1154.21 19/3.2 4/4.35 4/4.55 27/4.30 33/4.30 278 61.5 17.7 0.029314 1000 4013 52 1250 1259.14 152.81 1411.95 19/3.2 4/4.60 18/4.47 26/4.47 32/4.47 313 58.0 21.5 0.023161 1147 4713 51 1400 1399.6 134.3 1533.9 19/3.0 13/4.5 19/4.5 25/4.5 31/4.5 329 53.6 20.4 0.02133 1160 4962 次内层，铝(支撑层) Next to Inner Layer (Al.) 次外层，铝 Next to Outer Layer (Al.) 最外层，铝 Outmost Layer (Al.) 计算总拉断力 Calculated total breaking load (kN) 弹性系数 Final modulus of elasticity (kN/mm2) 线膨胀系数 Coefficient of linear expansion (10-6/℃) 20℃直流电阻 DC resistance at 20℃ (Ω/km) 70℃载流量 Current at 70℃ (A) 单位重量 Linear mass (kg/km) 五、产品使用特性

LGKK型扩径导线的中心采用镀锌软管涂“FZ903”防蚀脂后支撑扩径，见图一所示；而新型软母线LGJK型则是钢芯上用硬圆铝线采用疏绞方式支撑扩径，见图二所示，两者比较，LGJK有以下优点：

1、LGJK型系列导线中没有金属软管，导线的原材料费用比LGKK型系列导线低。 2、LGJK型系列导线的使用寿命LGKK型系列导线长。因为LGJK型导线的使用寿命取决于镀锌钢丝，而LGKK型导线的使用寿命取决于金属软管，镀锌金属软管壁薄，且耐腐性与导性中的铝线、钢线不匹配。

3、LGJK型导线的隐患比LGKK型导线少，有利于电站安全运行。电站用软母线在使用时采用“T”型压接易造成金属软管压扁、压破，严重时会造成导线积水。成为导线运行时的严重隐患；而LGJK型导线的钢芯强度高，难于压扁压破，无此隐患。

4、LGJK型系列母线可适用于变电站中各级回路载流的需要，能增加电站设计的灵活性，尤其LGJK型大截面导线外径较大，更适合海拔电站使用，而LGKK型导线则不具备上述优点。

5、LGJK型系列母线最外层铝线排布均匀紧密，具有良好的抗电干扰及减少电晕损失的优点；而LGKK型系列导线由于金属软管外径偏差较大，必须导致导线结构不稳定或产生松股，凸线等现象,从而降低导线的电性能。

6、LGJK型系列软母线的长期使用温度为80℃。80℃时载流量可提高20%以上，因而产品经济效益较好。

7、LGKK型导线在绞制生产时，因金属软管短，焊接次数多，因而软管强度不高，且外径偏差大，造成产品合格率低，制造时劳动强度大；而LGJK型系列软母线在绞制时操作相对简单，可保证产品质量的稳定性。 Using properties

The center of type LGKK is made of galvanized flexible tube coated with “FZ903”anti-corrosive grease and enlarged, please see figure 1. The center of type LGJK is made of steel core sparsely by hard aluminum wires and enlarged, please see fig.2. Comparing the two models, the advantages of LGJK are as below:

1 As the center of type LGJK is metal flexible tube, the cost of LGJK is cheaper than that of LGKK.

2 Using life of LGJK series is longer than that of LGKK, because the life of LGJK depends on galvanized steel wire but the life of LGKK depends on flexible tube, of which tube wall is thin and does not match the aluminum and steel wires very well. 3 The hidden perils for LGJK are smaller than that of LGKK. 4 Only type LGJK bus is suitable for very stages circuit of power station. And the conductor of large sectional area is suitable for power station in a high elevation.

5 Type LGJK series have advantages on anti-radio characteristics and reducing corona loss, because the outmost layer of aluminum wire are arranged close together and well distributed. 6 The continuous operating temperature of LGJK bus series is 80℃. The current capacity at 80℃ is able to be increased 20% higher. 7 The quality of type LGJK is more stable than that of LGKK, because the production procedure is competitive easier than that of LGKK.