1. Commonly used in newly built overhead power lines.
2. Can meet the requirements of big number of fibers and ultra high voltage(UHV) transmission lines.
3. Can provide protection against lightning by transmitting large fault short-circuit current.
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 excellent lighting protection performance.
||Characteristics of a single mode optical fiber.
||Characteristics of a non-zero dispersion -shifted single mode fibers optical.
||Col code of fiber optic cables.
||Aerial optical cables along electrical power lines-family specification for OPGW.
||Optical fiber cables -part test procedures.
||IEEE Standard for testing and performance for optical ground wire for use on electric utility power lines.
||Aluminum -Clad steel wire for electrical purposes.
||Aluminum magnesium silicon alloy wire for overhead line conductors.
||Round wire concentric lay overhead electrical stranded conductors.
Colors -12 Chromatography:
Optical Fibre Characteristics:
||Polarization Mode Dispersion
||Design Link Value (M=20, Q=0.01%)
Cable Technical Parameter:
Typical design for Double Layer：
||Short Circuit (KA2s)
Typical design for Three Layer：
||Short Circuit (KA2s)
Remarks: Detail requirements need to be sent to us for cable design and price calculation. Below requirements are a must:
A, Power transmission line voltage level
B, fiber count
C, Cable structure drawing & diameter
D, Tensile strength
F, Short circuit capacity
Mechanical and Environmental Test Characteristics：
||IEC 60794-1-2-E1Load: according to cable structure Sample length: no less than 10m, linked length no less than100mDuration time: 1min
|| 40%RTS no additional ﬁbre strain（0.01%）, no additional attenuation (0.03dB).60%RTS ﬁbre strain≤0.25%，additional attenuation≤0.05dB (No additional attenuation after test).
||IEC 60794-1-2-E3Load: according to above table, three pointsDuration time: 10min
|| Additional attenuation at 1550nm ≤0.05dB/ﬁbre; No damage to the elements
| Water Penetration
||IEC 60794-1-2-F5BTime : 1 hour Sample length: 0.5mWater height: 1m
||No water leakage.
||IEC 60794-1-2-F1Sample length: No less than 500mTemperature range: -40℃ to +65℃ Cycles: 2 Temperature cycling test dwell time: 12h
||The change in attenuation coeﬃcient shall be less than 0.1dB/km at 1550nm.
How to Ensure the Quality and Performance of Your Fiber Optic Cable?
We control the products quality from the raw material to the finish produts All the raw material should be tested to match the Rohs standard when they arrived at our manufacture.We control the quality during the producing process by advanced technology and equipments. We test the finished products according to the test standard. Approved by various professional optical and communication product institution , GL also conduct various in-house testing in its own Laboratory and Test Center. We also conduct test with special arrangement with the Chinese Government Ministry of Quality Supervision & Inspection Center of Optical Communication Products(QSICO).
There are different test series to assure the quality of OPGW:
- Routine test (in‒process testing according to internal quality plan)
- Factory acceptance test (FAT, witnessed by customer)
- Type test (only in case of a basic new design, repetition in exceptional cases)
OPGW tests shall be in accordance with applicable standards or agreements between purchaser and manufacturer.
As a general rule the tests will be performed according IEC 60794-4-10.However, if necessary tests can be done according to IEEE Std1138.
Type test may be waived by submitting makerʼs certificate of the similar product performed in an internationally acknowledged independent test organization or laboratory. If type test should be performed, it will be carried out according to an extra type test procedure reached to an agreement between purchaser and manufacturer.
The optical attenuation coefficient on all production cable lengths is measured according to IEC 60793-1-CIC (Back-scattering technique, OTDR). Standard single-mode fibers are measured at 1310nm and at 1550nm. Non-zero dispersion shifted single‒mode (NZDS) fibers are measured at 1550nm.
Factory acceptance test is carried out on two samples per order in the presence of the customer or his representative. The requirements for quality characteristics are determined by relevant standards and agreed quality plans.
Quality Control - Test Equipment and Standard:
Feedback: In order to meet the world’s highest quality standards, we continuously monitor feedback from our customers. For comments and suggestions, please, contact us, Email: [email protected].
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