Fiber Optical Protection Conductor (OPGW 127-2) (G-652-D)

OPGW (optical ground wire) is a type of conductor that is used in the construction of electric power transmission lines. Here the conductor combines both the functions of grounding and communications. OPGW contains a tubuler structure with one or more optical fibers in it, surrounded by layers of galvanized steel and aluminium alloy wire.

In the OPGW system, the conductor serves as a normal ground wire, protecting the phase conductors against the lightning strikes. The optical fibers are integrated in a stainless steel tube filled with a thixotropic jelly and hermetically sealed to provide best protection of enclosed fibers at any stage of the installation or operation.

Parameter	Unit	Value
Aluminium Alloy Wire Diameter	mm	3.00 ± 0.03
Aluminium Clad Steel Wire Diameter	mm	3.00 ± 0.05
O/F Stainless Steel Tube Diameter	mm	3.00 ± 0.05
OPGW Conductor Diameter	mm	15.00 ± 0.5
Number of Aluminium Clad Steel Wire	center	1
Number of Aluminium Clad Steel Wire	1st Layer	5
Number of Stainless Steel Tube	1st Layer	1
Number of Aluminium Alloy (AAA) Wire	2nd Layer	8
Number of Aluminium Clad Steel Wire	2nd Layer	4
Lay Direction	1st Layer	Left-Hand (S-twist)
Lay Direction	2nd Layer	Right-Hand (Z-twist)
Total OPGW Cross-Section	mm²	134.3
Aluminium Alloy Unit Weight	kg/km	152.8
Aluminium Clad Steel Wire Unit Weight	kg/km	465.6
O/F Tube and Jelly Unit Weight	kg/km	16.0
Total OPGW Unit Weight	kg/km	634.4
OPGW Rated Tensile Strength (RTS)	daN	10700
Final Modulus Elasticity of OPGW	daN/mm²	11200
Thermal Expansion Coefficient of OPGW	10⁻⁶/°C	15.1
Permissible Max. Working Stress	daN	4280
Medium High Tension	daN	1712 - 2675
Endurance Tensile Strength (ETS)	daN	7490
Short Time Overcurrent (0.5 second) (40-180°C)	A	14600
Temperature After Short Time Overcurrent	°C	180
Working Temperature (Max.)	°C	80
Resistance at 20 °C (Max.)	ohm/km	0.540
O/F Stainless Steel Tube Diameter (Inner/Outer)	mm	2.6 / 3.0
Fiber Count	-	12 - 24
Working Temperature	°C	-40 ile 80