STACIR STACIR/TW Conductor

Super Thermal Alloy Conductor Invar Reinforced (STACIR) conductor

Invar Conductor Manufacturer & Supplier from China

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Overview

Application

Super Thermal Alloy Conductor Invar Reinforced (STACIR) conductor has outer layers composed of Super Thermal Aluminium (STAL) alloy wires that can operate up to 210°C (410°F). The inner core is composed of aluminium clad INVAR wires. INVAR is a metal alloy with 36% Ni in steel.

STACIR/AW conductors are suited for re-conductoring applications. The capacity of existing transmission line can be enhanced by simply replacing the existing conductor without any modification to the tower.

Hi-STACIR/AW, STACIR/AW is normally used to up-rate an existing transmission line by simply replacing the exisitng conductor without tower modification or reinforcement.


Construction

Core Wire (INVAR) : Aluminum-clad INVAR Wire/High Tensile Strength Aluminum-clad INVAR Wire

Conductor (STAl) : Super Thermal Resistant Aluminum Alloy Wire used for continuous allowable temperature up to 210℃

Benefits

Can carry 100% more current than that of ACSR of the same size, while maximum sag and maximum working tension remain the same as that of ACSR.

No modification or reinforcement is required to existing towers for uprating transmission and distribution lines.



Standard

IEC, ASTM, JCS 1405

Parameter

SUPER THERMAL RESISTANT ALUMINUM ALLOY CONDUCTOR, ALUMINUM CLAD INVAR REINFORCED (STACIR)

Conductor Size

Stranding

Cross-Sectional Area

Diameter of Complete Conductor

Weight

Rated Strength

DC

Resistance @ 20°C

Current Capacity

No. of Wires

Wire diameter

STAL

Invar

Total

STAL

Steel

Total

STAL

Invar

STAL

Invar

@ 85°C

@ 150°C

@ 210°C

(mm²)

(No.)

(No.)

(mm)

(mm)

(mm²)

(mm²)

(mm²)

(mm)

(Kg/Km)

(Kg/Km)

(Kg/Km)

(KN)

(Ω/Km)

(Ampere)

(Ampere)

(Ampere)

200

30

7

2.60

2.60

159.28

37.17

196.44

18.20

439.31

265.01

704.32

65.38

0.1746

403

690

850

240

30

7

2.90

2.90

198.16

46.24

244.39

20.30

546.54

329.69

876.23

79.92

0.1403

460

794

980

300

30

7

3.20

3.20

241.27

56.30

297.57

22.40

665.47

401.43

1066.90

94.82

0.1153

518

901

1114

300

30

7

3.20

3.20

241.27

56.30

297.57

22.40

665.47

401.43

1066.90

94.82

0.1153

518

901

1114

380

26

7

4.00

3.10

326.73

52.83

379.56

25.30

902.22

376.73

1278.95

104.26

0.0866

612

1076

1335

380

26

7

4.00

3.10

326.73

52.83

379.56

25.30

902.22

376.73

1278.95

104.26

0.0866

612

1076

1335

480

26

7

4.50

3.50

413.51

67.35

480.86

28.50

1141.87

480.23

1622.10

132.42

0.0684

704

1253

1559

480

26

7

4.50

3.50

413.51

67.35

480.86

28.50

1141.87

480.23

1622.10

132.42

0.0684

704

1253

1559

520

45

7

3.70

2.47

483.85

33.54

517.39

29.61

1337.00

239.17

1576.17

113.10

0.0597

748

1336

1665

520

45

7

3.70

2.47

483.85

33.54

517.39

29.61

1337.00

239.17

1576.17

113.10

0.0597

748

1336

1665

590

54

7

3.50

3.50

519.54

67.35

586.89

31.50

1437.04

480.23

1917.27

150.84

0.0549

790

1419

1771

600

54

7

3.53

3.53

528.49

68.51

596.99

31.77

1461.78

488.50

1950.28

152.20

0.0540

797

1434

1791

630

54

19

3.63

2.18

558.85

70.92

629.77

32.68

1545.78

507.40

2053.17

163.93

0.0511

824

1486

1857

690

54

7

3.80

3.80

612.42

79.39

691.81

34.20

1693.95

566.08

2260.03

176.38

0.0466

869

1576

1972

710

54

19

3.85

2.31

628.65

79.63

708.27

34.65

1738.82

569.72

2308.54

182.37

0.0454

883

1602

2006

730

45

7

4.40

2.90

684.24

46.24

730.48

35.10

1890.75

329.69

2220.44

155.82

0.0423

914

1663

2084

770

54

7

4.00

4.00

678.59

87.96

766.55

36.00

1876.95

627.24

2504.19

193.40

0.0421

922

1682

2108

800

54

19

4.09

2.45

709.47

89.57

799.04

36.79

1962.37

640.86

2603.23

205.51

0.0403

946

1729

2169

900

54

19

4.34

2.61

798.85

101.65

900.50

39.09

2209.60

727.30

2936.90

230.40

0.0357

1014

1868

2348

 

SUPER THERMAL RESISTANT ALUMINUM ALLOY CONDUCTOR, ALUMINUM CLAD INVAR REINFORCED (STACIR/TW)

Conductor Size

Cross-Sectional Area

Stranding

Diameter of Complete Conductor

Weight

Rated Strength

DC

Resistance @ 20°C

Current Capacity

STAL

Invar

Total

No. of STAL

Wires

No. of

STAL

Layers

No. of Invar

Wires

Dia. of Invar

Wires

STAL

Invar

Total

@ 85°C

@ 150°C

@ 210°C

(mm²)

(mm²)

(mm²)

(mm²)

(No.)

(No.)

(No.)

(mm)

(mm)

(Kg/Km)

(Kg/Km)

(Kg/Km)

(KN)

(Ω/Km)

(Ampere)

(Ampere)

(Ampere)

320

322.26

52.49

374.75

20

2

7

3.09

22.88

888.49

374.31

1262.80

100.95

0.0876

596

1039

1287

340

336.85

54.90

391.75

20

2

7

3.16

23.38

928.73

391.46

1320.19

105.55

0.0838

612

1069

1324

390

389.25

50.81

440.06

20

2

7

3.04

24.72

1073.18

362.29

1435.47

109.47

0.0731

662

1163

1442

405

402.83

52.15

454.98

20

2

7

3.08

25.14

1110.62

371.89

1482.51

112.86

0.0706

676

1189

1475

480

479.69

47.20

526.89

35

3

7

2.93

26.98

1329.03

336.55

1665.58

123.00

0.0600

733

1298

1613

490

489.57

63.55

553.13

24

2

7

3.40

27.70

1349.78

453.18

1802.96

136.19

0.0581

759

1347

1676

525

523.67

26.85

550.53

30

3

7

2.21

27.50

1450.88

191.47

1642.35

107.39

0.0556

763

1354

1685

590

586.76

41.28

628.03

33

3

7

2.74

29.40

1625.66

294.31

1919.97

131.16

0.0494

820

1464

1825

625

625.07

79.63

704.69

38

3

19

2.31

31.32

1731.79

569.72

2301.51

177.43

0.0458

862

1549

1935

640

636.97

44.03

681.00

35

3

7

2.83

30.60

1764.78

313.97

2078.75

141.60

0.0455

860

1542

1925

680

676.24

85.95

762.20

39

3

19

2.40

32.58

1873.58

614.97

2488.55

191.75

0.0423

903

1630

2037

690

688.96

47.52

736.48

36

3

7

2.94

31.80

1908.82

338.85

2247.67

151.77

0.0421

899

1620

2024

725

725.09

91.78

816.87

39

3

19

2.48

33.72

2008.91

656.66

2665.57

205.21

0.0395

940

1703

2131

730

726.41

91.78

818.19

39

3

19

2.48

33.75

2012.56

656.66

2669.22

205.41

0.0394

941

1705

2134

740

737.40

51.14

788.54

36

3

7

3.05

32.92

2043.02

364.68

2407.70

162.72

0.0393

936

1692

2117

780

776.92

98.56

875.49

39

3

19

2.57

34.90

2152.52

705.18

2857.70

218.33

0.0368

979

1780

2231

790

789.13

54.55

843.69

36

3

7

3.15

34.05

2186.36

388.98

2575.34

173.95

0.0367

973

1767

2213

820

821.87

108.79

930.65

39

3

19

2.70

36.00

2277.05

778.33

3055.38

235.56

0.0348

1012

1847

2316

840

839.80

58.07

897.88

36

3

7

3.25

35.14

2326.74

414.07

2740.81

185.14

0.0345

1008

1837

2304

880

876.90

111.22

988.11

42

3

19

2.73

37.10

2429.50

795.72

3225.22

246.40

0.0326

1050

1923

2414

890

891.08

61.70

952.78

42

3

7

3.35

36.18

2468.81

439.95

2908.76

195.42

0.0325

1043

1907

2394

900

901.93

73.54

975.47

42

3

19

2.22

36.70

2498.85

526.19

3025.04

213.21

0.0320

1054

1931

2425

980

976.36

123.77

1100.13

42

3

19

2.88

39.12

2705.08

885.56

3590.64

274.28

0.0293

1115

2056

2587

990

987.86

68.90

1056.76

42

3

7

3.54

38.10

2736.95

491.27

3228.22

217.12

0.0293

1105

2035

2560


LS Cable & System Standard

STAl Wire

Standard Diameter

 

(mm)

Tolerance of Dia.

 

(mm)

 

Tensile Strength (kgf/mm2)

Elongation on 250mm(%)

Min

Reference

Cross- sectional Area

(mm2)

Weight

 

(kg/km)

breaking Load (kgf)

DC

Resistance at 20℃ (Ω/km)

 

Min.

 

Avg

Min.

Avg (Min.)

2.6

±0.03

17.2

18.3

1.5

5.309

14.33

91.3

97.2

5.41

3.2

±0.04

16.5

17.6

1.7

8.042

21.71

133

142

3.57

3.38

±0.04

16.5

17.6

1.7

8.973

24.23

148

158

3.20

3.7

±0.04

16.5

17.2

1.8

10.75

29.03

177

185

2.67

4.0

±0.04

16.2

16.9

1.9

12.57

33.94

204

212

2.29

4.5

±0.04

16.2

16.9

2.0

15.90

42.93

258

269

1.81


Aluminum-clad INVAR Wire

Standard Diameter

 

(mm)

Tolerance of Dia.

 

(mm)

Tensile Strength

 

(kgf/mm2)

Elongation Min.

 

(%)

No. of Twists

 

(Nos.)

Conductivity

 

 

 

(%IACS)

Properties of Aluminum

Reference

Thickness

 

(mm)

Wrapping

Aluminum

Thickness (mm)

Cross-

sectional Area (mm2)

Weight

 

(kg/km)

breaking

Load (kgf)

Coefficient of Linear Expainsion

Modulus

of   Elasticity

(kgf/mm2)

15℃~230℃

(x10-6/℃)

230℃~290℃

(x10-6/℃)

2.47

±0.05

110

1.5

20

14

0.06

No

separation between aluminum and invar core or no breakage

0.15

4.790

34.02

527

3.7

10.8

15,500

2.6

±0.05

110

1.5

20

14

0.06

0.15

5.309

37.69

584

3.7

10.8

15,500

3.1

±0.06

110

1.5

20

14

0.07

0.17

7.548

53.48

830

3.7

10.8

15,500

3.2

±0.06

110

1.5

20

14

0.07

0.17

8.042

57.10

885

3.7

10.8

15,500

3.38

±0.07

110

1.5

20

14

0.08

0.18

8.973

63.71

987

3.7

10.8

15,500

3.5

±0.07

110

1.5

20

14

0.08

0.18

9.621

68.31

1.060

3.7

10.8

15,500


High Tensile Strength Aluminum-clad INVAR Wire

Standard Diameter

 

(mm)

Tolerance of Dia.

 

(mm)

Tensile Strength

 

(kgf/mm2)

Elongation Min.

 

(%)

No. of Tweists

 

(Nos.)

Conductivity

 

 

 

(%IACS)

Properties of Aluminum

Reference

Thickness

 

(mm)

Wrapping

Aluminum Thickness

(mm)

Cross- sectional Area (mm2)

Weight

 

(kg/km)

breaking Load

(kgf)

Coefficient of Linear Expainsion

Modulus of   Elasticity

(kgf/mm2)

15℃~230℃ (x10-6/℃)

230℃~290℃ (x10-6/℃)

2.47

±0.05

125

1.5

20

14

0.06

No  separation between aluminum and invar core or no breakage

0.15

4.790

34.02

599

3.7

10.8

15,500

2.6

±0.05

120

1.5

20

14

0.06

0.15

5.309

37.69

637

3.7

10.8

15,500

3.1

±0.06

120

1.5

20

14

0.07

0.17

7.548

53.48

906

3.7

10.8

15,500

3.2

±0.06

120

1.5

20

14

0.07

0.17

8.042

57.10

965

3.7

10.8

15,500

3.38

±0.07

120

1.5

20

14

0.08

0.18

8.973

63.71

1.077

3.7

10.8

15,500

3.5

±0.07

120

1.5

20

14

0.08

0.18

9.621

68.31

1.155

3.7

10.8

15,500


LS Cable & System Standard

STACIR / AW

Conductor Size

 

(mm2)

Stranding (Nos./mm)

Min. Breaking Load

(kgf)

Overall Diameter

 

(mm)

Reference

Cross-sectional Area (mm2)

Weight (kg/km)

Modulus of   Elasticity (kgf/mm2)

Coefficient of Linear Expansion

(10-6/℃)

DC

Resistance at 20℃ (Ω/km)

Current Carrying Capacity (A)

STAl

INVAR

STAl

INVAR

Total

STAl

INVAR

Total

160

30/2.6

7/2.6

6,140

18.20

159.30

37.16

196.46

441.7

265.2

706.9

8,040

16.0

0.1745

909

240

30/3.2

7/3.2

9,170

22.40

241.30

56.29

297.59

669.1

401.7

1070.8

8,040

16.0

0.1159

1,203

330

26/4.0

7/3.1

10,000

25.30

326.80

52.84

379.64

905.1

377.0

1282.1

7,580

17.5

0.0869

1,452

410

26/4.5

7/3.5

12,720

28.50

413.40

67.35

480.75

1145.5

480.6

1626.1

7,590

17.5

0.0686

1,708

480 (Rail)

45/3.7

7/2.47

10,500

29.61

483.84

33.54

517.38

1340.7

239.3

1580.0

6,900

20.0

0.0600

1,812

480 (Cardinal)

54/3.38

7/3.38

13,280

30.42

484.52

62.81

547.33

1343.5

452.2

1795.7

7,470

18.3

0.0591

1,846


Hi-STACIR/AW

Conductor Size

 

(mm2)

Stranding (Nos./mm)

Min. Breaking Load

(kgf)

Overall Diameter

 

(mm)

Reference

Cross-sectional Area (mm2)

Weight (kg/km)

Modulus of   Elasticity (kgf/mm2)

Coefficient of Linear Expansion

(10-6/℃)

DC

Resistance at 20℃ (Ω/km)

Current Carrying Capacity (A)

STAl

INVAR

STAl

INVAR

Total

STAl

INVAR

Total

160

30/2.6

7/2.6

6,500

18.20

159.30

37.16

196.46

441.7

265.2

706.9

8,040

16.0

0.1745

909

240

30/3.2

7/3.2

9,700

22.40

241.30

56.29

297.59

669.1

401.7

1070.8

8,040

16.0

0.1159

1,203

330

26/4.0

7/3.1

10,500

25.30

326.80

52.84

379.64

905.1

377.0

1282.1

7,580

17.5

0.0869

1,452

410

26/4.5

7/3.5

13,300

28.50

413.40

67.35

480.75

1145.5

480.6

1626.1

7,590

17.5

0.0686

1,708

480 (Rail)

45/3.7

7/2.47

11,000

29.61

483.84

33.54

517.38

1340.7

239.3

1580.0

6,900

20.0

0.0600

1,812

480 (Cardinal)

54/3.38

7/3.38

13,800

30.42

484.52

62.81

547.33

1343.5

452.2

1795.7

7,470

18.3

0.0591

1,846


Comparison with Conventional ACSR

Conductor Size

(mm2)

Stranding

 

(Nos./mm)

Weight

 

(kg/km)

Overall Diameter

(mm)

Breaking Load

(kgf)

DC

Resistant at 20℃

(Ω/km)

Modulus of Elasticity ①

(kgf/mm2)

Coefficient  of Linear Expansion ②

(x10-6/℃)

Continuous Current Capacity (A)

 

 

160

 

ACSR

HAl

30/2.6

 

732.8

 

18.2

 

6,990

 

0.182

 

9,080

 

18.0

454 (90℃)

St

7/2.6

 

Hi-STACIR/AW

STAl

30/2.6

 

706.9

 

18.2

 

6,500

 

0.1745

 

8,040 (15,500)

 

16.0 (3.7)

909 (210℃)

INVAR

7/2.6

 

 

240

ACSR

HAl

30/3.2

1,110

22.4

10,210

0.139

9,080

18.0

593 (90℃)

St

7/3.2

 

Hi-STACIR/AW

STAl

30/3.2

 

1,070.8

 

22.4

 

9,700

 

0.1159

 

8,040 (15,500)

 

16.0 (3.7)

1,203 (210℃)

INVAR

7/3.2

 

 

330

ACSR

HAl

26/4.0

1,260

25.3

10,950

0.0873

8,360

19.0

714 (90℃)

St

7/3.1

Hi-STACIR/AW

STAl

26/4.0

1,282.1

25.3

10,500

0.0869

7,580 (15,500)

17.5 (3.7)

1,452 (210℃)

INVAR

7/3.1

 

 

410

ACSR

HAl

26/4.5

1,673

28.5

13,890

0.0702

8,360

19.0

829 (90℃)

St

7/3.5

 

Hi-STACIR/AW

STAl

26/4.5

 

1,626.1

 

28.5

 

13,300

 

0.0686

 

7,590 (15,500)

 

17.5 (3.7)

1,708 (210℃)

INVAR

7/3.5

 

 

480 (Rail)

ACSR

HAl

45/3.7

1,599

29.61

11,800

0.05994

7,250

20.8

891 (90℃)

St

7/2.47

 

Hi-STACIR/AW

STAl

45/3.7

 

1,580

 

29.61

 

11,000

 

0.0600

 

6,900 (15,500)

 

20.0 (3.7)

1,812 (210℃)

INVAR

7/2.47

 

 

480 (Cardinal)

ACSR

HAl

54/3.38

1,836

30.42

15,300

0.0599

7,990

19.5

899 (90℃)

St

7/3.38

Hi-STACIR/AW

STAl

54/3.38

1,795.7

30.42

13,800

0.0591

7,470 (15,500)

18.3 (3.7)

1,846 (210℃)

INVAR

7/3.38


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