OPGW Composite overhead Ground wire with optical fibers
Construction:
• Stainless-steel optical fiber unit
• Center tube or layer strand structure
• Aluminum alloy wire and aluminum clad steel wire armored
• Coated with anticorrosive grease between layers
Feathers:
• Fibers are housed in stainless steel tube lead to high reliability
• OPGW can support heavy load and long span installation
• OPGW can meet the ground wire‘s requirement of mechanical and electric by adjusting proportion of steel and aluminum.
• Easy to produce the similar specification of exist ground wire. can replace the exist ground wire
Application:
• Replace the exist ground wire of exist high voltage power transmission line
Applying properties
• lighting protection and conduct the short circuit current
• Optical fiber communication ability
• Adapt to replace the aged ground wire and new construction of high voltage ground wire
Technical parameter
|
Fiber count（core） |
Depends on the cable type |
|
Voltage level |
Adapt to any voltage level power transmission line |
|
Allowable bending radius |
static：20 times cable diameter
dynamic：40 times cable diameter |
|
Operation temperature（℃） |
-40～+70 |
Specification of main products:
• OPGW- mB1(+nB4)-cross section square[ break force；short circuit current capacity]
• According to the different situation that power transmission line and side ground wire installed，the follows is the technical characteristics of normal specification
|
Cross section
Square
(mm2) |
Outer diameter
(mm) |
Cable weight
(Kg/km) |
Tensile strength
(KN) |
Modular elasticity
(KN/mm2) |
Linear expansion
coefficient
(10-6/℃) |
DC
Resistance
(Ω/km) |
Short circuit capacity
(kA2s) |
|
35 |
8.1 |
250 |
45.2 |
162.0 |
13.0 |
2.433 |
8.9 |
|
50 |
9.6 |
343 |
63.0 |
162.0 |
13.0 |
1.743 |
16.5 |
|
70 |
11.4 |
487 |
89.3 |
162.0 |
13.0 |
1.237 |
30.4 |
|
90 |
12.5 |
368 |
58.2 |
94.1 |
17.3 |
0.473 |
72.7 |
|
105 |
13.5 |
428 |
67.9 |
94.1 |
17.3 |
0.403 |
98.8 |
|
130 |
15.0 |
527 |
83.8 |
94.1 |
17.3 |
0.329 |
149.9 |
|
…… |
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…… |
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Typical construction:
• Type 1. Central tube
• Type 2. Layer strand
