Fiber Transmission Communication Network – Optical Terminal Box

Publiziert am 23. Mai 2013 von chunxiu

Optical Fiber Termination Box in short OTB, optical terminal box is mainly used for the cable ends fixed, cable and pigtail splice and the remainder fiber asylum and protection. The communication network of fiber optic transmission optical cable terminal box series terminal wiring of auxiliary equipment, suitable for indoor fiber optic cable directly and branching connection of the fiber optic connector play a protective role.

The Material Performance

Optical cable terminal box where the parts are made of materials should have anti-corrosion properties, such as corrosion resistance should be treated with preservatives; Its physical and chemical properties must be stable; must be compatible between the various materials.

And sheath compatible with the cable jacket and wiring pigtail. In order to prevent corrosion and other electrical damage, these materials must also be compatible with other commonly used materials in the device.

Appearance of cable terminal box should be completer shape, no glitches, no bubbles, no cracks and voids, meta-warping element impurities and other defects. All background color shold be uniform and continuous. Beautiful appearance, convenient construction connecting additional attenuation reasonable structure, the fiber to strengthen the core fixed in the terminal box, cable metal outer sheath connected ground wire leads function applies to both the ribbon cable and fiber optic cable. Unique design, the terminal box on the 19-inch, wall-mounted terminal box.

Cable terminal box of the optical properties of the remaining fiber is coiled in the set fibers and optical fiber and fiber optic connectors, fiber optic terminal box installation of the operating additional attenuation.

Mechanical properties after the following tests, the cable terminal box box body and box should change, if necessary, for the fiber-ray examination.

1.Stretch: cable terminal box with a fiber optic cable should be able to withstand the axial tensile strength of not less than 500N, with either a wiring pigtail can withstand axial tensile strength of not less than 5N.
2. Flattening: The cable terminal box on each side of the box body should be able to withstand the vertical static pressure of not less than 200N.
3. Torsion: cable terminal box should be able to withstand the torsion angle.

Electrical performance

1. Insulation resistance: Cable connector box of metal components and optical metal reinforcing core fiber optic cable between the metal components, the insulation resistance between the cable metal parts and ground should not be less than 2 * 104MΩ [test voltage of 500V (DC).

2. Dielectric strength: cable terminal box with cable metal strengthening core fiber optic cable between the metal components, cable metal structures between the role of 15KV DC 1min, no breakdown, no flashover.

Optical Performance

The remaining fiber cable terminal box is coiled within the splice tray fiber and fiber optic connectors, cable terminal box installation of the operating there should be no additional attenuation.

Function

The splice closure is two pieces of fiber optic cable connection. The terminal box is the tip of the cable access, and then through the patch cord access optical switch. Therefore, the terminal box is usually installed in the 19-inch rack can accommodate fiber optic cable ends quantity more. The splice closure is two pieces of fiber optic cable connection. Terminal box is connected to the fiber optic cable with pigtail play a protective role. Indoor terminal box can be used for practical work with but very little splice closure when the terminal box uses not the same. 1. the transfer box can be divided into the cable transfer box and cable boxes. Their role in the user front-end wiring use. 2. Breakout boxes generally refers to the splice box, also known asfiber optic splice closure in some places, especially radio and television system, also known as optical splice pack, its role is to protect the cable connector does not damage by the outside world. Patch panel fiber optic patch panels and cable distribution frame, the role like the transfer case, but it is used in the engine room of the operators.

Application

Optical cable terminal box as a carrier of information transmission, fiber optic hardware as an information transmission medium, has become an important pillar of modern communication. optical cable terminal box technology from theory to the field of engineering technology experienced a few decades, to the realization of today’s high-speed fiber-optic communications, before and after the birth of the fiber-optic communications technology and in-depth development of information and communication in the history of an important reform.

Optical cable terminal box is widely used in telephone, if farmers network systems, data, image transmission system, CATV cable TV series for indoor fiber optic cable through power connection and branch connection, play a pigtail disc storage and protection of joint role, made of cold-rolled steel plate electrostatic spray, design, reasonable structure, appearance before a large fiber to strengthen the core fixed in the terminal.

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Important Guidelines of The Cisco SFP Transceivers

Publiziert am 22. Mai 2013 von chunxiu

In the world of information technology, SFP means Small Form-Factor Pluggable, also named mini gbic. SFP modules are being added into the network switch in order to hook up it in the structure of fiber optic with the Ethernet system. The Cisco sfp transceivers are designed to change the serial electric signals to the serial optical signals which primarily sustains the Gigabit Ethernet, Fiber Channel and the Sonet/SDH wherein it provides a favorable approach in acquiring a resolution for the method of adoption in university grounds, data hubs, metropolitan locations, ring networks and the storage network sites.

Ethernet converter is the Ethernet cables at the end of another network to allow multiple system accurate corresponding with different wire. This is also be used in similar settings once there are several computer functions and different types of technology. On the side, the lines of fiber optic can defy the interference from whichever kind of electronic device, mobile phones and wireless complex not like with the conventional Ethernet which normally, loses the signal after being exposed to such apparatus. In this case, it is better to provide fast Ethernet optical fiber and the superior signal.

The SFP is being managed by the MSA or multisource conformities from IBM, Lucent, Siemens, AMP/Tyco and Infineon, which are principal elements of the network vendors. This small form-factor pluggable has the following advantages:

a. For the reason that it can be plugged, the optical interface can still be modified on the end pace of the creation of the card.

b. It is able to accommodate plently of connector interfaces or the combination of LX SFP amd SX.

c. Ever since the cage of SFP is being placed into the PCB board in order to accept the transceiver, it can reduce the additional procedures in the production, thus lessening the overhead. And therefore, it makes the reconfiguration and replacement easier.

d. Owing to the removed optical component, SFP transceiver has augmented reliability. It allows the use of higher soldier temperatures.

Safety Guidelines

Laser Safety

Before you install SFP modules in a Cisco device or attempt to operate or service a Cisco device equipped with SFP modules, you must read and observe the important safety information in this publication. Refer to the Regulatory Compliance and Safety Information publication or the Site Preparation and Safety Guide that supports your Cisco device for the complete list of translated safety warnings and agency approvals that apply to your Cisco device.

The Cisco SFP Transceiver Modules are equipped with a Class 1 Laser, which emits invisible radiation. Do not stare into open optical ports. These warnings apply to the Cisco SFP modules.

 Warning: Class 1 laser product.

warning Warning: Because invisible laser radiation can be emitted from the aperture of the port when no fiber is connected, avoid exposure to laser radiation and do not stare into open apertures.

warning Warning: Laser radiation is present when the system is open and interlocks bypassed.

warning Warning: Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Guidelines for Handling SFPs

Use these guidelines when you work with SFPs:

a. Cisco SFP modules are static sensitive. Wear an ESD-preventive wrist strap that is connected to the chassis in order to prevent ESD damage.

b. Cisco SFP modules are dust sensitive. Always store the devices with plugs installed in the optical bores.

c. Do not remove and insert a Cisco SFP module more often than is necessary. Repeated romovals and insertions of a Cisco SFP module can shorten its useful life.

Cisco SFP is exchangeable, in addition to its flexibility, from a wide set of Cisco items. It can be used with the union of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX, or 1000BASE-BX10-D/U in a port-by-port basis.

The Cisco SFP modules take an essential role in linking one structure to another as it is being employed in varying applications most commonly employed in the information technology commerce.

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Digging Deeper Into Small Form Factor Pluggable Transceivers

Publiziert am 21. Mai 2013 von chunxiu

A compact, hot plug fiber optic transceiver, the Small Form-Factor pluggable (SFP) transceiver is used in fiber optic communications for telecommunication and data communications applications. SFP is the interface between a network device mother board and a fiber optic or copper cable network cable.

The sfp transceiver is able to support Gigabit Ethernet, fiber channel, SONET, and a number of other communications standards. For your information that in the near future, SFP will expand to the SFP+. At the time, the data rate in 10 Gbit/s is a chievable, including 8 billion fiber channel. Compared to Xenpack or XFP type of modules, all of their circuitry inside, an SFP+ module leaves some of its circuitry to be implemented on the host board.

There is a huge change in the optical transciever is a vailable, each with different transmitter or receiver. This allows the user configure and customize the transceiver to get the proper optical reach with either a multi-mode fiber or single-mode fiber type. In addition, the optical SFP module comes in four categories -SX, which is 850nm, LX, which is 1310nm, ZX, which is 1550nm and DWDM. All of them have an interface of a copper cable which permits a mother board to communicate via USTP (unshielded twisted-pair) cable network. There are also a coarse wavelength division multiplexing and two-way optical fiber cable, single mode 1310/1490 nm upsteam and downstream.

Actually available, the sfp transceiver has the capability transfer rates of up to 4.25 Gbit/s. XFP, a form factor which is virtually identical to the SFP type, increases this amount by nearly three times, at 10Gbit/s. The sfp transceiver is specified and made compatible via a multi-source agreement (MSA) between manufacturers, so that different users who may use equipment from different manufacturers and provides can work effectively and smoothly without worrying about errors and inconveniences.

The GBIC interface is the precursor to the sfp, hence it’s nicknamed as mini gbic. However, the SFP allows greater port density (number of transceivers per inch along the edge of a mother board) than the GBIC. Also exist the identical Small Form-Factor (SFF) transceiver which is about similar size as the SFP. Rather than plugged into an edge-card socket, it is directly attached to the mother board as a pin through-hole device.

Digital optical monitoring (DOM) or digital diagnostics monitoring (DOM) funcations are supported by the modern optical SFP transceiver according to the industry specifications of the SFP-8472 MSA. The user has the ability to constantly monitor real-time parameters of the SFP, such as optical input/outp power, supply voltage and laser bias current because of this feature.

That have been said, I’m very glad to know that optical transceiver is a very popular format, it is recommended to use a considerable amount of fiber optic component suppliers. These companies carry sfp transceivers for all Cisco devices together with transceiver modules for many other manufacturers. So, if you need technology solutions for your networking applications, you now know what to look for.

Source: www.fiberstore.com

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The Industrial Purpose of Using Fiber Optic Cables

Publiziert am 20. Mai 2013 von chunxiu

There are several kinds of industrial applications through the use of fiber optical cable. Thin fiber of glass or plastic, through which data can light and sound propagation is called optical fiber. These optical fibers as thin as human hair. When they are assembled together, they form a cable that can be used for transmitting information and signals.

Optical fiber is widely used in telephone and telecom industry. Optical lighting is also an indispensable medical, aerospace and military applications. Other systems such as intrusion detection alerts or light through optical fiber movements. Thanks to their big data carrying capacity, the cable is particularly important in the local area network (LAN). Applications such as machine vision lighting are enabled via optical lightings.

A major advantage of these cables is proposed is their lower cost than the traditional use of copper wire. Here are some other offers important advantages of fiber optic cable:

Long-distance data transmission

High bandwidth can be reach even over long distances using this cable. They can carry critical signals without the loss of data. These cables also do not get jammed, making them ideal for mission critical operations such as sending flight signals.

Immune to electromagnetic interference

Since these cables use the medium of light, and not electricty, to transmit signals, electromagnetic interference doesn’t usually affect the data transmission process.

The ideal security data transmission

It is a known fact that electromagnetic interference (EMI) could also cause data leaks. This is a potential threat for sensitive data transfer operations. It may not always be possible to shield the wire, and even with the shielding, also cannot guarantee 100% safety. On the contrary, an optical cable has no external magnetic field so signal tapping is not easily achieved. This makes an optical cable is the most preferred components or sensitive data transmission security.

No spark hazard

Electrical wiring constantly needs to be safeguarded against a potential spark hazard. This isn’t the case with optical fiber cables as they are inherently safe. This particular attribute is especially significant in industries such as chemical processing or oil refineries where the risk of explosion is high. Signals that are sent using cables do not spark.

No heat issues

Fiber optics can carry small amounts of light without the risk of producing heat. Thus, fiber optic cables are safe to use in surgical probes that are inserted inside a patient’s body to study internal organs. These very cables are also used during surgeries to relay laser pulses. With no heat or shock hazard, such cables are safe to use during the most critical surgeries. This attribute makes optical cables safe for use in machine vision lighting applications too.

These are a few fundamental advantages of optical cables. There are several other benefits that a professional optical cable manufacturing house shall be able to discuss with you. More information about products such as LSZH cable, armored fiber cable for all you industrial applications.

Source: www.fiberstore.com

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The Applications of Cable Ties

Publiziert am 18. Mai 2013 von chunxiu

Cable Ties (also known as wire ties or zip ties) come in a variety of types and sizes. They are used to bundle and secure wire and cable. Cable zip ties are the most basic and economical tool for every type of cable management. It has such a wide range of applications, it has reached many fields of our daily life. Due to its application and cost effective is not only used in professional and network wiring, and it is used for each application, which will be required. In general cable ties are very useful in all applications where supporting or holding of wires and other similar objects is required.

The basic characteristics of the cable tie is that once it is used to provide a specific control, it has control of forever, unless it is deleted. Due to its unique design in which a nylon strip with a geared rack with one ratchet cased at one end is used, at the end of the once inserted into the case and tighten, any size, cannot loosen it makes hold forever. In any case it can be at ease, if we need to open this to any changes we need to cut and replace a new cable tie according to new requirements. This type of cable ties are for one time use only. This can be a good choice as a temporary lock and one of the most common application, you will find that deal with the baggage at the airport. They use it as a temporay lock for loosely packed luggage or locking other open areas of the luggage.

In a professional layout for cable management in any building, office, house use of cable ties can not be ignored at all but there are so many smaller applications where we can see the most cost effective and easiest to use type of tool. It may be managing cables in a bicycle or any other two wheelers, transport vehicles, holding wires in CPU of computer or any normal household application to hold smaller objects.

In case we need to bundle a few cables running from onw corner of house to another corner, just hold the cables together, wrap a cable tie along it making a loop, insert the strip in into ratchet case and pull through it up to a desired level of tightness and it is over. And a few more such cable ties at suitable distance and the messy look of hanging wires will disappear. Normal cable ties are one time use which can be taken as the only one disadvantage but due to its low cost and easy way for organizing messy wires, this disadvantage is well compensated.

These are usually made by nylon cable ties and has a good strength to hold almost any type of object in our normal life. It plays very important role in temporary construction site like a barbed fence, temporary shelter, management messy looking power and data cables etc. It is widely accepted and used in almost every segment such as house, office, residential and commercial buildings, industrial and agricultural sites, packaging industry, food supply and pharmaceutical and so on. Sometimes stainless steel cable ties are also used for specific application. One more special type of metal detection cable ties are used in food, beverage and pharmaceutical industries to comply with the safety standards set by the local government departments.

The only major shortcomings, one time use cable ties, is taken care now and a few reusable cable zip ties are also available in the market like cable hook and loop fasteners and mille ties. Flag type of zip ties is also available on which some coding, logo or any other type of indications can be marked. Different colored cable ties can be found for the purpose of color coding and also for matching to surrounding color.

Veröffentlicht unter Allgemein | Hinterlasse einen Kommentar

How To Repair a Cut Underground Fiber Optic Cable

Publiziert am 17. Mai 2013 von chunxiu

The underground fiber optical cable can be accidentally cut. The most common factor which can cause this accident is the use of backhoe while digging. If it happens to you, you can simply look for backhoe and get the cut cable. However, if it is caused by moles, it will be difficult for you to troubleshoot it. You will need some equipment to involve. Now, there are some simple tips to repair a cut underground fiber optic cable.

The first thing you have to do is to look for the break in your cable. Usually, the optical fiber technicians use the equipment is called optical time domain reflectometer or OTDR. It can work like redar which sends a light pulse down to the cable. It will be reflected back to your device when it encounters break. It helps to the technician know the location of the break.

After knowing the location of the break, you should dig up the cable with the break. Then, strip the fiber around 9 feet of the cable using cable rip cord. Peel the jacket gently so that the fiber optic tubes exposed and eliminate the excess jacket. Then, clean that cable gel using cable gel remover and cut any sheath and yarn. Separate the tubes of the fiber. Avoid damaging the strength member since it is required to hold the cable in splice enclosure.

Next, you need to do is 2 inches by using the fiber cladding on fiber coated with mold release tools and claning in the tube. Trim any damage on the fiber ends using high precision fiber cleaver. If you want to perform a fusion splice, you need to place a fusion splice protector to the fiber. From now on, you must be cleaned, use lint-free stripe fiber wipes it is soaked in alcohol. In addition, if you want to create a mechanical connection, you must connect fast fiber optic connector to fiber and fiber with alcohol and a lint-free after cleaning wipe. Make sure that the fiber does not touch anything.

Then, if you make a fusion splice, you need to put the fibers which will be spliced in the fusion splicer. Then, fire the fusion splicer based on the manual. After that, you need to move the fusion connector into a heat shrink oven. Press a button to heat shrink. In some cases, the fusion splice is better than mechanical splice since the signal loss is under 0.1 decibels (dB). On the other hand, the mechanical splice has signal loss under 0.5 dB. The last thing is to see the connection of fiber-optic with the OTDR. Then put back those splices into the splice enclosure. Close the enclosure and then rebury the cable.

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How To Successful Installation of Underground Fiber Optic Cable

Publiziert am 16. Mai 2013 von chunxiu

The two most common outdoor fiber optic cable installations are pole line aerial installation and underground cable installation. Underground cable installation can be directly buried underground or in a buried pipe.

Direct burial installation

Direct burial installations are most common for long cross country installations. The cables are plowed in or buried in a trench; the installation process can be very fast. The most common type of cable is used in the directly buried cables is outdoor steel armor.

Underground duct installation

Fiber optic cables can also be pulled through underground ducts, which protect the cables from harsh environment. Underground duct installation also provides opportunity for future expansion without the need to dig. This is the most common approach in urban areas. Another benefit is that the fiber optic cable no armor can be used to make installation easier.

Preparation before underground cable installation

1. The right to receive appropriate one-way permits

2. Identify existing underground utilities such as buried cables, pipes

3. Investigate the soil condition in order to determine the installation depth, whether duct should be used, the type of fiber cable should be used and plowing equipment needed.

Buried cable technology

1. Plowed under

Cultivated land is faster than cuts in the fiber optic cable. But the process must be carefully monitored to prevent damag to the cable.

2. Trenched

Fiber optic cable can also be cut. This process is slower than farming; however, it allows a more control cable installation. Dig trenches can by hand or by machine.

3. Directional boring

Directional boring technique is used where the surface cannot be engaged in such as high, the railway crossing. On the contrary, a drilling machine is used to bore a few inches beneath the surface of the hole diameter, a pipe is out of the mouth of the cave, and then dragged into fiber optic cable pipe.

Important factors

1. Cable installation depth: up to 40 inches

The depth that fiber cables should be buried is determined by the soil conditions and surface usage. In cold region, fiber optic cable is buried below the frost line, usually prevent damage of cable is the ground frost.

2. Keep the trenches as straight as possible

Fiber cable trenches should be straight, and should be formed at the bottom of the trench. Backfill soil could also be used to load evenly distribution cable and protect the cable.

3. Fiber cable warning labels should be buried directly above the cable

Fiber optic warning cables are typically buried directly above the cables to warn future digging operations. Or concrete slabs can be buried below the warning label but above the cables to provide even more protection.

4. Whenever armor fiber cable used, they should be properly grounded

In the directly buried installations, steel armored fiber optic cable is often choose for their strength and protection from rodents bite. A very important thing to remember is proper grounding cable. They should be down-to-earth in all end points, splicing and the entrance of the building. Steel armored cable should be connected to ground using compression type clip. Cable near ground is then bolted to the ground terminal strip.

5. Fiber optic cable minimum bending radius should always be observed during installation.

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Show You How to Install Outdoor Fiber Optic Cable In Underground Ducts

Publiziert am 15. Mai 2013 von chunxiu

Fiber ducts are usually made of HDPE (high density polyethylence), PVC or other compound. They are usually in black or gray. Fiber innerduct is usually orange or yellow.

Why usually fiber ducts and innerducts are corrugated?

Fiber ducts and innerducts are corrugated to provide the following benefits:

1. During the installation to reduce the traction tension;

2. Very flexible and can be used to install location involves many times;

3. After installation, corrugated innerduct should place one day allow innerduct retreat back into the duct through its waveform spring action.

The use of pulling tape

Fiber optic cable traction tape is pre-installed in the fiber duct and innerduct in the factory. This saves a lot of time during the installation process. Duct and innerduct can also be prelubricated in the factory, thus significantly reduces pulling tensions.

Never bend over its minimum bend radius

Like a fiber optic cable, fiber duct and innerduct also have a minimum bending radius specification. Always should be bent pipe or innerduct tightening than its minimum bending radius.

What is supported and unsupported radius?

The supported radius is the minimum bend radius when the duct is bent around a supporting structure such as in another duct or on a reel. The unsupported radius is the minimum bend radius when the duct has no supporting structure in the bend.

Benefits of using fiber duct and innerduct

Fiber duct- Fiber duct protects the fiber cables and also provides an opportunity for future cable access and expansion. Fiber optic cable can be pulling into existing duct. The duct should usually be oversized to allow future cables be pulled in.

Fiber innerduct- Fiber innerduct of fiber optic cable to provide protection from the other company of cable installation. It also provides additional protection of the environment. Innerduct or fiber can be used in the old pipe installation.

Things to keep in mind

1. Install the end plug

After the fiber optical cable is installed into a duct or innerduct, end plugs should be installed to provide a water seal. No pieces should be able to enter the duct or innerduct, and watertight should always be maintained for the duct or innerduct.

2. Duct and innerduct should be properly sized for future expansion possibility

As usual, the expansion of the plan for the future project is crucial to the success of the real. The ration of up to 40% is a good practice to fill the following. Should increase the length of pipe size is the length of installed with many times. A larger pipe can help reduce the tension in the cable drawing. 3 to 8 inches standard pipe sizes in different ID and innerduct size range from 0.75 to 2 inches.

The benefit of using duct lubricant

Duct lubricant can significantly reduce the cable’s coefficient of friction, thus lessening the pulling tension during cable pulling process. This is especially important in long duct cable pulls with many turns.

Duct lubricant spillage should be cleaned up as soon as possible to prevent accident since it is very slippery. Manufactures’ recommended procedure for cleaning lubricant provides good instruction on how to do the cleaning.

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How Can You Ensure Effective Cable Management

Publiziert am 13. Mai 2013 von chunxiu

Objective the cable management system is to ensure seamless, can reduce the possibility of accidents. Considering the correct installation of the equipment cable management helps to keep at bay the trouble. Now, read on to know how you can ensure effective cable management.

Any business that use of electrical and electronic components needs effective cable management. All kinds of cable not only safety hazards but also detrimental to the quality of the system. Which makes it necessary to do cable management effectively denied the possibility.

Like any other management, cable management began in the begining. Factors that you need the right equipment from the installation of cable management. It will save you from hassles that crop up later. It is advisable to use fire-proof jackets as jumbled up cables are prone to catching fire.

Equipment placement and routes must be designed in a way so that the individual cables have enough space and look neat as well. This needs to be taken care of while adding more equipment. Use of wire tacks and metal conduits will help in keeping things fire resistant.

Keeping up the sanctity of the server room is also very important. If the server room is a mess, it will help to use accessories like a cable tray, relay and basket. Cable tray of metals such as aluminum, galvanized steel, are suitable for use in industrial and office set up. Ventilated trays allow for air circulation, while solid bottom trays offer optimum protection, though these may require additional fittings for cables to get in and out. You can use the plastic pallet, but these do not provide protection from fire. Network of pipe or cable basket contains cable to keep their way.

Ties are used for binding cables. You need to display immense precaution while binding bundles of wires as there is simply no scope for negligence. You must go for durable and flexible ties as these would just not be cost-effective but safe also. Cable ties with different quality, color and size options are available in the market. If you have specific application requirements, you can discuss it with the suppliers and they suggest you a solution.

Cable management panel is an outstanding tool that is used for a system of accident. The panel is desogned to easily hold the cables so that there is no nuisance of intertwining. In the select a panel, you must enter the details of the analysis, so that you select a panel, very suitable for your specific requirements.

For smooth flow of data, it is necessary that all components of the system are well in place and working perfectly. Equally important, you are from one supplier purchasing components, made a sign the perfect product quality and supply.

Such a supplier will offer complete array of cable management products such as cable ties, wire loom, cable identification, braided sleeving, cable trays, cable wraps, heat shrink tubing, server racks & enclosures, and so on. Procuring from such suppliers will ensure that all your requirements are served at the single place. Large suppliers will be willing to supply things at discounted prices and also ensure timely delivery of the goods.

Source: fiberstore.com

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Why Should We Use Low Smoke Zero Halogen Cables

Publiziert am 10. Mai 2013 von chunxiu

Have you been wondering about if you need a low smoke zero halogen cable for your application? FiberStore would like to learn more about this topic to you. Here we will discuss what the halogen is and why need to consider using halogen-free cable for your situation.

What are halogens?

In the periodic table have a specific group, several element belongs to. Halogens are one of these groups and the family of elements includes fluorine, chlorine, bromine, iodine and astatine. At first you may not have reason to know so but in fact there are many use halogen in our daily life. Chlorine is in almost all of the toothpaste, fluoride is used in swimming pool, iodine is a common thing in the medicine cabinet.

Other Halogen Uses

Beyond our daily contact with halogens there are also numerous other ways in which halogens are used. These elements in the cable jacket as flame retardants, including PVC (polyvinyl chloride). Coincidentally, the flame retardant chemical can cause some health problems. Although halogen compound to prevent infection and spread of fire, they will release harmful gases, if cable and reach the point of ignition. Carcinogenic substances such as polychlorinated biphenyls (PCBS) and polycyclic armoatic hydrocarbons (pahs), nitro polycyclic aromatic hydrocarbons and dioxins are all toxic chemicals, can be formed when these halogenated compounds was burned down. These gas compounds is not only dangerous when they are burned, in the air, they can condense into alkaline acid after contact with water (such as hydrochloric acid).

What is Low Smoke Zero Halogen

Low Smoke Zero Halogen or low smoke free of halogen (LSZH or LSOHL or SFH or OHLS) is material classification typically used for cable jacketing in the wire and cable industry. LSZH cable jacketing is composed of thermoplastic or thermoset compounds that emit limited smoke and no halogen when exposed to high sources of heat.

Most fiber optic network cables are insulated with polyethylene, PVC or thermoplastic urethane (TPU). In a fire, a halogen-containing plastic material releases hydrogen chloride, a poisonous gas that forms hydrochloric acid when it comes in contact with water. Designated halogen-free cables, on the other hand, do not produce a dangerous gas/acid combination or toxic smoke when exposed to flame.

Low smoke zero halogen cable reduces the amount of toxic and corrosive gas emitted during combustion. This type of material is typically used in poorly ventilated areas such as aircraft or rail cars. Low smoke zero halogen is becoming very popular and, in some cases, a requirement where the protection of people and equipment from toxic and corrosive gas is critical.

Low Smoke Zero Halogen – a safe alternative: Low Smoke Zero Halogen is actually a very good description of what these cables can do for us. When burning is very little smoke compounds such as
polypropylene production, no poisonous gas would like PVC cable. LSZH cabling or low smoke zero halogen cable is a safe choice area, potential and the potential of people with a fire near the fire. Low Smoke Zero Halogen also complies with the European Union’s Restriction of Hazardous Substances (RoHS) directive and similar North American safety and environmental standards.

Source: fiberstore.com

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