Pulling method tends to be more popular for standard Fiber Optic Cables (FOCs) and in large-size ducts … To avoid damaging fiber optic and other cables, and for placing pushing or pulling lines, Hellman also relied on fiberglass hand rods. Cable Pulling & Cable Laying Equipment Suppliers & Distributors. Then position the pulling grip over the cable core and tape it in place. In this method, cable is pulled through duct/pipes with the help of pre-installed rope inside the duct/pipes. Should an innerduct become twisted during installation, the twisting (helixing) can dramatically increase pulling tension during cable installation. Puller Set-Up3. Limitations: Special air blowing equipment are required for air blowing method. Cable and duct can be monitored  and controlled to minimize the cable damage. Limitations: Optical fiber cables must be handled in compliance with their stated design ratings. h�bbd```b``� �� ���d���@$�09L����`]�`R��L�˾�Rz`6��7���$�4�KA>� • When pulling fiber-optic cable through nonmetallic raceways (or nonmetallic 90 degrees elbows) with rope, maximum speed through a duct shall be about 3 ft (91 cm) per second. In a midspan pull, the cable is pulled through duct to a handhole or manhole and the pull is continued until sufficient cable has been pulled for the rest of the length of the pull. In addition, other general safety precautions should be paid much attention as well. Cable pulling A common cable installation technique for fiber cables remains cable pulling. These non-conductive rods are used for guiding (or fishing) wire or cable through ducts, walls, attics, crawl spaces, etc. In this method, cable is pulled through duct with the help of pre-installed rope inside the duct. The pull line is attached to one end … Learn more at: http://www.condux.comThis video covers how to:1. It involved pulling a fiber optic cable through underground ducts under one city block, which is a total distance of around 500 feet, or 150 meters. 83 0 obj <> endobj (667-8,006 N) and are designed to separate at 5 percent of their rated break load. Since a pulling rope with a small diameter may cut the inner duct when being pulled, it is necessary to lubricate the pulling rope. �Uy�NTYёm�p�ǂ N�D�z�����ūw�T��t�=��a#=}_*�X��.�k�2���o��6>7�qt�.db�F:Wz2�'����r8�s-�h�Mc�8��Z����s2���Q�����յ���,���c2I�Q�wQ�M���>��B�����dPD}�����0Z>h��J��&�M"�X�ۦb�4��bl�*��HK��z�S�6���C�r�#"�5����l=��MV��7��M,Ғ�U����>��O����¿o����D���U2Q�Q9�;���\Y�p���p����l��#@��. f;(�$�L�f�=|���L�� �&�����G!Ĥ�b�����#6�q��7�a�/d�.�:.�*��ՀY0�2�/��������U���>i�L��K����x;�`�(�W�o�b��BaA_f�T�8�̷��e>R�t�gpC��k� Hx� L�l��9LA�a|��@ A duct is available from point A to point B, a pull tape is blown in, a fiber optic cable is attached to it and the cable is pulled through the duct. $��'��<7j��ﳝL@w>���q���L�_ �\w Quality of inner-duct joints is critical to the success of air blowing techniques. Corrugated innerduct has less “memory” than other types of When pulling fiber optic cables, they are often referred to. Long, uninterrupted lengths of installed cable are desired. Generally, the duct is available in plastic, concrete, steel, iron and so on. Under this condition, the fiber cable needs to be stored in coil form at each manhole/handhole available at every 200 to 300 meters. Position the Foot Control & Position the Capstan4. As a rule of thumb, air blowing method for fiber optic cable installation is more favored than pulling method due to improved installation efficiency, particularly in longer ducts with multiple bends and undulations and savings in manpower and installation time. Handling crews must be familiar with the cable's design ratings and the critical events during installation where design limits may be approached. Installation crews must use blowing equipment specifically designed and tested for micro-duct fiber cable to avoid damage to the cable. Our High Density Polyethylene (HDPE) Innerduct RUS-UL listed and ASTM approved and is made of 100% Virgin Resin.The Innerduct can be manufactured in almost any color and has outstanding UV protection.Orange, Black, Red, Blue and Green are the most common conduit colors. Pulling Method VS Air Blowing Method: How to Choose? When using a capstan to pull the cable through the conduit, the capstan must have a diameter that must meet the minimum bending radius of the cable under installation tensile load. This swivel will allow the Fiber Optic Cable (FOC) and the pull rope to move independently in the conduit during the pull and prevent unnecessary twisting of the Fiber Optic Cable (FOC). And these pulling ropes are normally pulled through ducts to ensure a straight pulling path as shown below. Installing fiber optic cable within a building or campus traditionally involves “pulling” cable. Fiber optic cable can be installed in conduits either by pulling the cable by hand or by using a capstan. Optical fiber Cable pulling in underground horizontal duct routes requires some special considerations. * Second, verify the maximum tension you can place on the cable. For detailed information about preparation for duct installation, you should read installation manual carefully. Fiber Optic Pulling Vs Blowing. Decreasing pulling tensions during installation 2. Duct Installation of Fiber Optic Cable Installation Methods of Fiber Optic Cable into Duct. Air blowing of fiber cable into duct systems requires continuous run of inner-duct and pressure testing for integrity. Use friction tape to cover approximately three inches of the cable core and jacket. Fiber optic cable is usually (but not always) installed in an innerduct that provides mechanical protection for the fiber optic cable. Optical fiber cable installation into the duct has widely been applied for telecommunication application so far. If mule tape is used, the top speed shall be 9 ft (274 cm) per second. Field tests have shown that, as a rule of thumb, when there are more than 600 to 900 degrees of evenly distributed bends in a duct, pulling tension for the fiber cable will exceed 500 pounds, even with the friction reduction supplied by cable lubricant. 1.02 Methods used for placing fiber optic cables in ducts are essentially the same as those used for placing copper cable. Condux Breakaway Swivel are essential for fiber optic and coaxial cable pulling, these swivels have a break load ranging from 150-1,800 lbs. The process begins by sending a pull line through a cable duct or other available pathway. h�b```f``*``e`�bgf@ a�(�q�%�'�nSS��v���V����J���^�Y��2y~�[�����}���~ li ��l�R����g���%�X While all types of cable can be blown into duct, blowing is particularly useful for placing outside plant fiber optic cable. Cable that is pulled is laid in a “figure 8” pattern on the ground Pulling Traditionally, fibre optic cables were pulled through cable ducts in the same way as other cables, via a winch line. Used for installation of fiber optic communication lines either underground, overhead, through conduit or through enclosures. Fiber optic cable can be installed using different cable placing methods. 0 Large compressor and/or hydraulic power pack, Duct route with multiple bends and undulations, Suitable for short distance (few 100 meters) installation, Preferred for long distance (over 2 km) installation. Pulling a new fiber optic cable over an existing one is not recommended due to the possibility of entanglement. into one innerduct. As fiber optic cable is sensitive to excessive pulling, bending and crush forces, much care shall be taken to avoid cable damage during its duct installation. h޴X�n�6~����C��E �iҬ���ɲ�Ʀc���Ht��wu���N�0�\y�>��,�qfY6=| f���z>�]fq?D����V׷Q�͍M�lK�����Bl�-&���l�g& Starting with the essentials, having the right pulling tape is a must-have for measuring or pulling cables within ducts. The crew had already blown through the duct with a pull tape, attached it to the fiber optic cable and were pulling the cable when I arrived.
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