Cables Fo Gral

8/14/2019 Cables Fo Gral

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Cdigos de Colores de la cubierta

externa

De conformidad con el TIA-598-A:

50/125 - Anaranjado

100/140 - Verde

62.5/125 - Gris

200/230 - Negro

Monomodo - Amarillo


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Tight-Buffered Cable

- With tight-buffered cable designs, thebuffering material is in direct contact withthe fiber. This design is suited for "jumper

cables" which connect outside plant cablesto terminal equipment, and also for linkingvarious devices in a premises network.

Multi-fiber, tight-buffered cables often areused for intra-building, risers, generalbuilding and plenum applications.


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"Tight-Buffer" Una fibra por cada recubrimiento-mayor proteccin

mecnica y ambiental.

No necesita "gel" - construccin "tight-buffer" y hilos de

aramida proveen una proteccin superior a cada

centmetro del cable.

No precisa limpieza especial - no hay "gel", es fcil deinstalar y conectorizar ahorrando tiempo y costos e

incrementando confiabilidad.

No requiere tensor central - un cable ms flexible y fcil de

instalar. El cable puede ser instalado verticalmente y por mltiples

curvas.

Fcil de conectorizar, no requiere de equipos extras.

Costo instalado ms bajo.


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Loose-Tube Cable

Loose tube cables are for general purposeoutdoor use. The loose tube design providesstable and highly reliable transmission

parameters for a variety of applications. Thedesign also permits significant improvements inthe density of fibers contained in a given cablediameter while allowing flexibility to suit manysystem designs. These cables are suitable foroutdoor duct, aerial, and direct buriedinstallations, and for indoor use when installed inaccordance with NEC Article 770.


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Loose-Tube Cable

- In a loose-tube cable design, color-codedplastic buffer tubes house and protectoptical fibers. A gel filling compound

impedes water penetration. Excess fiberlength (relative to buffer tube length)insulates fibers from stresses ofinstallation and environmental loading.

Buffer tubes are stranded around adielectric or steel central member, whichserves as an anti-buckling element.


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Choosing Cable

There are many different types of fiber opticcables. All of the cables are defined by the

number of fibers in the cable, the type of

fibers (MM or SM), the size of the fiber(50, 62.5 or 125um) and the type of

material used to enclose the fibers. The

material used to enclose the fibers have

many names. Some of the names are

generic andothers are names used by the

cable manufacturer.


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Choosing Cable

To limit any confusion, you should begin with thefollowing questions:

What type of fiber do I need?

How many fibers do I need? Do I need indoor or outdoor cable?

Will the cable be in a hazard environment andrequire rugged construction?

Will the cable be underground and requiremoisture and rodent protection?

Do you need Plenum, Tempest, NEC, UL, orCSA rated cables?


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What is and why use PLENUM Cable Most states and cities have adopted for their

building codes the National Electrical Code(NEC) recommendations regarding acceptablewiring methods for cable installed in the airhandling or plenum spaces above suspendedceilings. The NEC states that all cable installedin plenum spaces must be installed in metalconduit unless classified by an approved agencyas having fire resistant, low smoke producingcharacteristics.

Cables that are not classified by an approvedagency, such as Underwriters Laboratories (UL),as having fireresistant, low smokecharacteristics must be installed in conduit.


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What is and why use PLENUM Cable

Conduit installation can increase the initialinstalled cost of a cable system by an average of100 percent, and rerouting cables in conduit toaccommodate moves, adds and changes iscostly and disruptive.

Cables made with several different materialshave the UL low smoke, low flame spreadclassification. However, plenum cables insulatedwith TEFLON fluoropolymer resin provide

superior electrical performance at a reasonablecost for all computer, voice, data, video, controland life safety systems.


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LOW SMOKE, ZERO HALOGENCABLE

HalexRTM is a low smoke, zero halogen fiber

optic cable, designed to replace standard

polyethylene jacketed fiber optic cables inenvironments where public safety is of great

concern. In addition to having low smoke

properties, HalexR cable meets the NEC

requirements for risers, passes all U.S. flamerequirements for UL 1666 and UL 1581, and is

OFNR listed up to 156 fibers.


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TACTICAL/MILITARY CABLE

Tactical cable utilizes a tight bufferconfiguration in an all dielectric

construction. The tight buffer design offersincreased ruggedness, ease of handlingand connectorization. The absence ofmetallic components decreases thepossibility of detection and minimizessystem problems associated withelectromagnetic interference.


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TACTICAL/MILITARY CABLE

TEMPEST CABLE DESCRIPTION: Transient Electro-magnet, Pulse Emanation Standard (TEMPEST)

For use where secure communications are a majorconsideration, and Tempest requirements must be met.

The Tempest rated cable is available in a variety of cableconstructions.

Tempest relates to government requirements forshielding communications equipment and environments.

One common application is the use of fiber optic cable inconjunction with RF shielded enclosures. Theseenclosures have been specially constructed to suppressthe emission of RF signals


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TIPOS DE CABLES OPTICOS

A) Cables para inter iores.

Los cables para interiores son los que se

usan dentro de los edificios, deben tener

buena flexibilidad y ser no propagadores

de la flama; caracterizndose todos ellos

en tener la cubierta externa del PVCantifuego, y en no llevar armaduras.


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B) Cables para exterio res.

Estos diseos contemplan todas las

posibles variedades, es decir:

I) Puede llevar cubierta secundaria detubo holgado o de tubo apretado, o bien ir

sin esta cubierta.

II) Pueden ser de elemento central detensin de ncleo ranurado, o de

elemento de tensin exterior.


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B) Cables para exterio res.III) Por lo regular todos llevan barrerascontra la humedad que pueden ser de

jelly, de cintas magnticas o utilizandopresin de gas. En general la cubiertaexterna es de polietileno con negro dehumo.

IV) Pueden llevar o no armadura y si lallevan pueden ser en cualquiera de susvariedades.


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C) Cables Especiales.

Son elaborados bajo pedido especial del usuario. (ej.

cable submarino)Para poder utilizar la fibra en forma prctica, esta debeestar protegida contra esfuerzos mecnicos, humedad yotros factores que afectan el desempeo de la fibra, porello es necesario proporcionar una estructura protectora

a la fibra formndose as el cable ptico.La estructura variar dependiendo si el cable serinstalado, ya sea en ductos subterrneos, enterradodirectamente o suspendido en postes.


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CLASIFICACION DE CABLES

PTICOS

Estructura del Cable ptico.

Un cable de fibra ptica cuenta con los

siguientes elementos:

1. Ncleo. Compuesto por una regin

cilndrica, por la cual se efecta lapropagacin de la luz (puede ser de vidrio

o plstico).


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PTICOS


2. Cubierta primaria. Se aplica durante el

estirado de la fibra. Es la zona externa ycoaxial con el ncleo, totalmente necesariapara que se produzca el mecanismo depropagacin, tambin se denominaenvoltura o revestimiento (es de plstico).


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PTICOS


3. Cubierta secundaria. Proporciona proteccin

radial, contra esfuerzos mecnicos. Por su formapuede ser: de tubo apretado (d=0.8 a 1 mm) otubo holgado (d=1 a 3mm). Por sus materialespuede ser de poliuretano, nylon o tefln.

4. Miembro de tensin. Proporciona un elementoque absorbe las cargas longitudinales del cableptico.


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PTICOS


Por su Material: Metlico, Acero, Aluminio.

Dielctricos: filamento plstico, fibras textiles,fibras de vidrio, plstico reforzado con fibras.

5. Barrera contra la humedad. Evita la

penetracin de humedad al cable, se utilizanpetrolato o jelly (repelente al agua), o jalea contrala humedad. En fibras submarinas existe lapresurizacin por nitrgeno o por aire seco.


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PTICOS


6. Cubiertas del cable. Protege a las fibras y

dems elementos del cable, de impactos,

friccin y elementos corrosivos. Se emplea

el polietileno PVC.

7.Armadura. Protege contra daos

mecnicos, roedores y termitas, se utilizan

acero o aluminio.


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PTICOS


8. Barrera trmica. Protege trmicamente a

los elementos del cable durante suextrusin de cubiertas y previene posibles

daos causados por cambios muy bruscos

de temperatura. Se utiliza la cinta mylar.


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