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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.
Parameters:
Model No. | section | Rated breaking force (KN) | Cable Diameter (mm) | Weight (kg/km) |
OPGW | 40 | 54 | 8.7 | 313 |
50 | 61.4 | 9.6 | 348 | |
60 | 62.7 | 10.8 | 391 | |
70 | 80.8 | 11.4 | 478 | |
80 | 84.6 | 12 | 538 | |
90 | 57.3 | 12.6 | 587 | |
100 | 66.4 | 13.2 | 615 | |
130 | 88.1 | 15.6 | 65 |