Overhead Optical Ground Wire 48 Core G655 Outdoor Fiber Optic Cable 24 Core G652D Central Structure OPGW

Descriptions:
OPGW optical cable is called Optical Fiber Composite Overhead Ground Wire, is an overhead ground wire containing optical fibers. The optical fiber is placed in the ground wire of the overhead high-voltage transmission line to form an optical fiber communication network on the transmission line. It is mainly used for 500KV, 220KV , 110KV and communication lines for new overhead high-voltage transmission systems. The number of cores is 4-48, and there are aluminum tube type, aluminum frame type and (stainless) steel tube type structure.

OPGW is a dual functioning cable performing the duties of a ground wire and also providing a patch for the transmission of voice, video or data signals . The fibers are protected from environmental conditions (lightning, short circuit, loading) to ensure reliability and longevity. The cable is designed to be installed on transmission and distribution lines to carry voice, data and video communications, especially in lighting waveform monitoring system, an observation system for overhead test line, maintenance data information system, power line protection system, power line operation system, and unmanned substation monitoring.

Features:
(1) The OPGW uses stainless steel loose tube structure, increasing its reliability and the performance of temperature-resistant.
(2) The OPGW meets the requirement of large fiber line application.
(3) The OPGW are specially applied for the optical communication system while installing the electric transmission line.
(4) Project design (sag-tension calculation, short circuit current, ADSS hardware fittings calculation)

>> OPGW cable is mainly used in 500KV, 220KV and 110KV lines, limited by power cut, security and other elements, mostly used in new lines. Its applications are: high voltage over 110kv, with a longer span (usually over 250M);
>> Easy to maintain, easy for line span, its mechanical property can meet a big line span;
>> outer OPGW is metal armoring, with no influence for high pressure electro-corrosion and degradation;
>> To construct OPGW must cut power, resulting in greater loss, thus OPGW must be used in constructing high voltage line over 110kv;
>> For OPGW performance index, the more short circuit current, the more need a good conductor to be metal armor, and reduce tension strength, while, if the tension strength is certain, to increase short circuit current capacity, the only way is to enlarge metal section area, resulting in an increased cable Dia and weight, so that security is a question for line pole strength.
 
 
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