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10kV~35kV高压电缆载流量表(全)要点

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6kV35kV高压电缆载流量

电缆载疣量 The Current canying capacity of cable

• 3.6/6kV A

导体

弓壮巻装型电纜 在空气中

直埋土壤中

直埋土壤中

在空气中

直埋土壤中

洞导体

r r 铝导体

Alumuiinn

Cotiductor导体标称截面 Noininal cross -section of conductor irinn'U耐mo red卡岂装型电缆Anno red
单芯 Single-core二芯 Thiee-core二芯 Three-core
In airBuried在空气中 Ln airBunedIn airBuried
Copper conductor25165160135no135150
35205190160180165i75
50245225195210195205
70305275245260245255
95370330300300300
120430375345350345345
1504904253953?0350
1855604S0455445445的5
240S65540515525505
300765630615530565
400S90725720軽D695645
conductor25130120105115105115
35155145130140130140
50r iso175155165150165
70235215190200190195
95290255235240230235
1203352?0270275270
150380330310305305300
1854353703553503503-40
240515435420405410390
300595490485455470445
400695565575525550510
导体

导体标称截面 Nominal cross -section of conductor mm非铠装型电缆 铠装型电缆单芯 三芯 三芯 在空气中

直埋土壤中

在空气中 直埋土壤中

在空气中 直埋土壤中

铜导体 铝导体
Conductor3UnannoredAnnored
Single-coreThree-coreThree-core
In airBuriedIn airBuriedIn airBuried
Copper conductor25165160135150135150
35205190160180165175
50245225195210195205
70305275245260245255
95370330300305300300
120430375345350345345
150490425395390390385
185560430455445445435
240665555540515525505
3007656306155805565
400890725720660695645
Aluminu m conductor25130120105115105115
35155145130140130140
50190175155165150165
70235215190200190195
95290255235240230235
120335290270275265270
150380330310305305300
185435370355350350340
240515435420405410390
300595490485455470445
400695565575525550510
♦ 8.7/10 kV8.7 /15kV

导体

导体标称截面 Nominal cross -section of conductor mm非铠装型电缆 直埋土壤中

直埋土壤中

直埋土壤中

44
Conductor2Unannored葩装型电缆Aimored
单芯 Single-core三芯 Three-core三芯 Three-core
在空气中 In airBuried在空气中 In airBuried在空气中 In airBuried
洞导体 Copper conductor25165160140150140150
35205190170180170175
50245225205210205210
70305275255260250255
95370330310305310305
120430375360350350350
150490425405390400390
185560480465450440
240665555550520530510
300765630625585605565
400890725730665700645
铝导体 Aluminu m conductor25130120110115110115
35155145130140130140
50160175160165160165
70200215200200195200
95245255240240240240
120280290285275270270
150320330引5305310300
185365370365350350340
240435435430405415400
300500490490455475445
400585565580525555510
♦ 12/20 kV

导体 Conduct

导体标称截面 Nominal cross -section of conductor mm非铠装型电缆 直埋土壤中

直埋土傩中

直埋土壤中

。 r2Unannored铠装型电缆Annored
单芯 Single-core三芯 Three-con三芯 Three-core
在空气中 In airBuried在空气中 In airBuried在空气中 In airBuiied
洞导体 Copper conductor25165160140150140150
35205190175180170175
50245225210210205205
70305275260260255255
95370330315315310305
120430375360355350345
150490425410400400385
185560480470445455440
240665555555520535510
300765630630585605570
400890725735665705645
铝导体 Aluminu m conductor25130120110115110115
35155145135140135140
50190175160165160165
70235215200200200195
95290255245245240240
120335290280275275270
150380330320305310300
185435370365350355345
240515435430405415400
300595490495455475445
400695565580525560515
♦ 18/20 kV 18/30 kV

导体标称截面 Nominal cross -section of conductor mm非铠装型电缆 直埋土壤中

直埋土壤中

言埋土壤中

洞导体 Copper conductor2Unaimored铠装型电缆Armored
单芯 Single-core三芯 Three-con三芯 Three-core
在空气中 In airBuned在空气中 In airBuried在空气中 In airBuried
50245225215210210205
70305275270265265255
95370330320310315305
120425375370360360345
150485420420400410385
185555475480445465440
240650555565525545510
300745630640525615570
400870720745670715645
铝导体 Aluirunum conductor50190175165165165165
70235215205205205200
95285255250245245240
120330290285275280270
150375325330305320305
185430370375350365350
240505430435410425400
300580490505455485450
400680565590525570515
♦ 21/35 kV

号体标称截面 Nominal cross -section of conductor mm非铠装型电缆 直埋土壤中

直埋土壤中

直埋土壤中

洞导体 Copper conductor2Unannored铠装型电缆Annored
单芯 Single-core三芯 Three-core三芯 Three-core
在空气中 In airBuned在空气中 In airBuried在空气中 In airBuried
50245225215210210210
70305275270265260260
95370330325引5330315
120425375370355360350
150485420425430410390
185555475480450465445
240650555565525545515
300745630645刃0610565
400870720750675-
5001000825
铝导体 Aluminum conductor50190175165170165165
70235215205200200200
95285255250245255245
120330290290275280270
150375325330315320300
185430370375350365345
240505430440410425400
300580490505450475445
400680565590530--
500790645----
♦ 26/35 kV

导体标称截面 Nominal cross -section of conductor mm非铠装型电缆 在仝气中

直埋土壤中

直埋土壤中

直埋土壤中

铜导体 Copper conductor2Unannored皑装型电缆Annored
单芯 Single-core三芯 Three-core三芯 Three-core
In airBuried在空气中 In airBuried在空气中 In airBuried
50245225215210210210
70305275270265260260
95370330325315330315
120425375370355360350
150485420425400410390
185555475480450465445
240650555565525545515
300745630645590610565
400870720750675--
5001000825-
6301160940---
铝导体 Aluminum conductor50190175165170165165
70235215210200200200
95285255250245255245
120330290290275280270
150375325330315320300
185430370375350365345
240505430440410425400
300580492505460475445
400680565590530--
500790645---
630920740----
• 2CTC时导体允许最大直流电阻 Max. permissible d. c. resistance of conductor at 20 9

导体标称截面 Nominal cross -section of conductor mm

2洞导体 Copper conductor铝导体 Aluminum conductor
2.57.4112.1
44.617.41
63.084.61
101.833.02
161.151.91
250.7271.200
35fi524DM*
500.3870.641
700.2680.443
950.1930.320
1200.1530.253
1500.1240.206
1850.09910.164
2400.07540.125
3000.06010.100
4000.04700.078
5000.03660.0605
6300.02830.0469
电压试验.局部放电试验收 \\foltage test and partial discharge test

序号

试验项目 6/6

8.7/10

18/20

工频交流电压试验

73.5

91

四小时工频交流电压试验 冲击电压试验 局部散电试验1.73U0下擾大局部放电 星

Partial dischai^e test Maximum discharge at 1.73 U°

C

No.Test items电缆頤定电压制
3.6/66/108.7/1012/2018/3021/3526/35
1Power-frequency.a.c .voltage kV/5min12.521.30.54263(53)*(65)*
2High-voltage test for 4 hours kV14.42435487284104
3Impulse voltage test kV607595125170200250
4P5555555
*21/35kv26/35kV电缆工频耐压试验可根据用户要求'按2.5 Ux30nun或?. U° X5min进行试验。 For21/35kv and 26/35kV cables, the power-frequency a.c. voltage test may be made at 2.5 Uo X30min or3.

Uo X 5itun at the customers option.

导体标称截面 Nominal cross-section of conductor mm

导体允许疑大短路电流(1秒)

啊导体

铝导体

1.51
2Maximum permissible short-circuit current for conductor Is)
Copper conductorAlummum conductor
10 10.986
162.391.56
253.692.42
355.153.37
507.314.79
7010.26.68
9513.89.03
12017.411.4
15021.714.2
18526.717.5
24034.622.6
30043.128.2
40057.437.6
50071.747.0
63088.858.0
^JS( 值)Capacitance and inductance of cable (ieference value)

♦电容 Capacitance

导体标称截面 Nominal cross-section of conductor mm

616

8.7/10

&

18/20

2电缆额定电压 Rated voltage of cable(kV)
3.6/66/107/1512/2018/3021/3526/35
毎相电容 Capacitance for each phase A F/km250.24230.19220.1576---
350.26840.21160.17250.1502
500302210.23670.19170.16610.13630.12390.1150
700.34620.26930.21670.18680.15080.13650.1263
950.38750.29990.24000.20600.16430.14830.1368
1200.42360.32660.26030.22280.17600.15840.1460
1500.46470.35700.28340.24180.18930.17000.1563
1850.50590.38730.31230.26560.20600.18150.1665
2400.54300.42900.34390.29160.22070.19720.1805
3000.55890.47060.37550.31750.23870.21280.1945
4000.59400.53110.42130.35510.264?0.23540.2146
5000.61670.58390.46130.38800.23760.25510.2321
6300.68480.64810.50990.42780.31510.27890.2533
导体标称截面 Nominal cross-section of conductor mm616

8.7/10

18/20

电感 Inductance 0
2电缆额定电压 Rated voltage of cable(kV)
3.6/66/108.7/1512/2018/3021/3526/35
从 F/km25•刃 540.61430.6474----
350.57530.59320.62480.6390-
500.55430.57110.60110.61450.65010.66750.6751
700.53570.54860.57650.59190.52520.63940.6467
950.51720.53180.56080.57260.60430.61800.6279
1200.50590.51970.54730.55860.58910.60510.6118
1500.49490.50790.53410.54490.57400.58950.5959
1850.48850.50060.52520.53540.56400.57600.5839
2400.47900.48900.51430.52160.54870.56150.5677
3000.47490.48180.50320.51020.53760.54840.5540
4000.46600.47020.49270.49910.52190.53430.5395
5000.46000.46190.48480.49070.51280.52240.5272
6300.45470.45630.47480.48270.50120.51010.5161
*: S -相邻两根电缆之间的中心距离,D -电缆外径

S- The distance between the two adjacent cable center. D - The overall diameter of the cables.

三芯电缆电感 Inductance for three- core cable.

导体标称截面 Nominal cross-section of conductor mm

电缆额定电压 616

8.7/10

18/20

电感
2Rated voltage ofcable(kV)
3.6/66/108.7/1512/2018/3026/35
Inductance A F/km250.35520.37970.4061
350.33840.36130.38620.4064
500.32110.34230.36550.38450.43960.4679
700.30400.32320.34450.36200.41450.4427
950.29150.30920.32900.34540.39560.4208
1200.28260.29920.31780.33920.37990.4019
1500.27420.28970.30710.32170.36420.3862
1850.26720.28170.30090.31450.34850.3737
2400.26080.27260.29040.30300.33600.3611
3000.25760.26510.28170.29350.32660.3485
4000.25160.25640.27140.28220.30140.3266
5000.24800.25030.26410.2742
6300.24210.2442
♦金属屏蔽层的允许摄大短路电流 Max.permissible short - circuit current for metallic

screen

♦单芯电缆 Single core cdble

导体标称截面 Nominal cross-section of conductor mm

电缆额定电压 6/6

8.7/10

&刀

18/20

短路电流 Inductance
2Rated voltage of cable(kV)
3.6/66/101512/2018/3021/3526/35
AF/hn25107510831094
351074108210921096
501072108010911095128412861288
701070107910901091128112851286
951069107710861272128012841283
1201068107712661271127912801282
1501067107612651270127812791282
1851064125112641267127512791279
2401241125012621266127412761278
3001239124612611265127112751277
4001240124512561260127012721274
5001243124412531257126612721273
6301236123812521253126510701270
♦三芯电缆 Three - core cable

导体标称截面 Nominal cross-section of conductor mm

电缆额定电压 6/6

8.7/10

电感
JRated voltage of cable(kV)
3.6/66/108.7/1512/2018/3021/3526/35
Inductance A F/km252958295829582958295830313031
352958295829582958303130313031
502958295829582958303130313031
702958295829582958303130313031
952958295829583031303130313031
1202958295829583031303130313031
1502958295830313031303130313031
1852958295830313031303130313031
2403031303130313031303130313031
3003031303130313031303130313031
4003031303130313031303130313031
5003031303130313031
63030313031
电缆敷设运各条件

电缆导体的长期 Max. continous operating temperature of the cable con

杲高工作温度 doctor 909

环境空气温度 Ambient air temperature 409

土壤温度 Soil temperature 2CPC

土壤热阻系数 Thermal resistivi ty of soil 1. 0V. m/W

埋设深度 Depth of laying 0 8m

仅考虑个回路 Single circuit parallel laid

单芯电缆为水平敷设,间距为一个电缆外径

Single core cable is parallel laid . Adjacent space is equivalent to the diameter of the cable .

♦不同土壤逞度下的载流量修正系数 Current rating factors for variation in soil temperatuie

土壤温度工

Soil temperature15202530354045
Rating factors1.071.041.00.960.920.870.83
♦不同土壤热阴系数的载流量修正系数 Cunent rating factors for vahation in thermal

resistivity of the soil

土壤热阻系数

三芯电缆

Three

单芯电缆

Single

Themud resistivity of soil S/W1.01.21.52.02.53.03.5
core cable1.00.9430.8770.7920.7360.6750.641
core cable1.00.9340.8500.7480.6920.6350.598
♦不同环境温度下的载;流星修正系数 Current rating factors for variation in ambient air

temperature

环境空气温度 £

Air temperature15202530354045
Rating factois1.071.041.00.960.920.870.83
♦空气中多根电缆并列敷设时的载流量修正系数 Cuirent rating factors for parallel laid

multi - cables m air

电缆根数

Number of cablesArrangementS=DS=2DS=3D
1国)1.001.001.00
2国)0.850.951.00
3国)0.800.951.00
4(国)0.700.900.95
5(图)0.700.900.95
6(图)0.600.900.95
注:D・电缆外径S•相邻电缆之间的中心距离

Note: d - The overall diameter of the cable, S - The distance between the adjacent cable center.

选择导线: 1.机械强度, 2. 安全过流, 3.末端电压损失, 4.有功损耗, 5.满足发热等宗合考 虑。

如果选择电缆,因为地埋,应首先考虑满足发热要求;通常铜芯电缆按经济电流密度 2.25A/mm2 选择,但实践经验是不宜超过 1.5Amm2 。

如题:一台1250的变压器10kv侧额定电流I=P/ V3 C线 =1250/1.732*10=1250/17.32=72.17A

72.17/1.5=48.11A ,可选择 YJv YJv223*50mm2 电力电缆, 41250kva 变压器共 额定电流为 72.17*4=288.68A 288.68/1.5=192.45mm2 考虑裕度可选 3*240mm2

YJv YJv22 电力电缆。

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