OPGW Cable AL- Clad SST Structure

Main Features:

Stable structure, high reliability.

Able to obtain the second optical fiber excess-length.

Excellent resistance to distortion and side pressure.

Can withstand high mechanical stress, and easy to obtain a large short-circuit current capacity.

Applicable Voltage Range:

Power lines with voltage level of 110KV and below.

Overview

Applications:

Commonly used in newly built overhead power lines.

Can meet the requirements of big number of fibers and ultra high voltage(UHV) transmission lines.

Can provide protection against lightning by transmitting large fault short-circuit current. 

 

Construction

In order to prevent electrochemical corrosion caused by galvanic effect, which is caused by the different metal conductors of OPGW contacting each other, we have designed and developed a new kind of OPGW with aluminum clad stainless steel tube optical unit, this kind of optical cable does not need antiseptic gel to resist the electrocorrosion.

Aluminum clad stainless steel tube optical unit: this new type of stainless steel tube is made by coating a layer of aluminum on the surface of the common stainless steel tube, its total outer diameter, according to different specifications, ranges from 5.0mm to 7.2mm, and it can contain 48 cores of fiber at most.

In order to avoid stress of the fiber in the loose tube, the excess length of the fiber should be greater than 0.4%, and it is generally designed between 0.40% to 0.70% on the basis of theoretical calculation and the operation situation of the practical line.

Due to the optical unit loose tube containing a layer of aluminum, a part of the current is permitted to pass through the optical unit loose tube, which would increase the total short-circuit current capacity of the optical cable.

Parameter

Model

Largest core

Diameter

(mm)

Weight (kg/km)

Rated breaking force (kN)

201 DC resistance (Q/km)

Permitted short- circuit current capacity

OPGW-45

24

10.0

348

56.3

1.036

21.8

OPGW-55

24

11.0

430

71.5

0.900

31.1

OPGW-65

36

11.8

490

81.3

0.801

39.7

OPGW-70

48

12.3

522

84.6

0.752

45.0

OPGW-75

24

13.0

514

72.0

0.477

73.6

OPGW-100

12

13.8

713

121.8

0.636

67.9

OPGW-100

12

13.8

467

63.2

0.363

108.4

OPGW-110

36

14.6

782

132.1

0.569

83.0

OPGW-110

36

14.6

519

69.6

0.331

130.6

OPGW-120

24

15.0

840

143.8

0.546

93.1

OPGW-120

24

15.0

549

74.5

0.310

149.2

OPGW-130

48

15.9

922

156.0

0.489

113.8

OPGW-130

48

15.9

611

82.1

0.283

179.6

OPGW-150

48

17.0

1054

180.3

0.440

144.9

OPGW-150

48

17.0

689

93.4

0.248

232.7

OPGW-180

36

18.6

1291

221.4

0.343

227.6

OPGW-180

36

18.6

844

115.0

0.198

362.2


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