Hello everyone, I'm Brother Xue. Optical fiber trunking is often used in computer room engineering, optical fiber separate wiring duct to each cabinet offline, professional optical fiber channel can be assembled, engineering is very high, and from the material science is indeed better than some domestic plastic finished channel to pass, the most important point is that the indoor light in the computer room is not armored, it is soft, if it is placed on the grid tray all the way, it is easy to cause echo reflection in the optical fiber signal transmission process, affecting the transmission rate and quality, which has been confirmed by laboratory data and actual scene test data。
What is a fiber channel?
Optical fiber channel is specially prepared for the deployment of flexible optical fiber, plastic and iron (painted) wiring trough, also known as optical fiber trough, the material is generally divided into: flame retardant engineering plastics, aluminum alloy, steel. The width is 120mm, 200mm, 240mm, 300mm, 340mm, 400mm, and the height is generally 100mm. In the case of a large number of other sizes, the manufacturer can be customized. Generally, it is used for indoor computer room wiring.
There are two types of fiber channels:
1. Plastic optical fiber channel: plastic optical fiber channel is a new product developed according to the requirements of high-standard computer room construction, absorbing the advantages of foreign products combined with China's national conditions, and other accessories such as trough body and fiber outlet are made of high-quality flame retardant materials, with good integrity, simple installation, and rounded corner protection at the corners to ensure that the optical fiber bending radius is greater than 40mm; The fiber outlet is made of flame-retardant plastic with rounded corner protection, which can be moved freely in the tank, which is convenient for the fiber to be dismounted in the appropriate position.
2. Aluminum alloy optical fiber channel: Aluminum alloy optical fiber channel is a new type of optical fiber channel required by the high-standard computer room for various environments and places where the optical fiber channel is used, as well as the wishes of foreign customers.
There are two types of aluminum alloy fiber troughs: one is the aluminum alloy side bottom of the fiber trough, and the other is the all-aluminum alloy profile fiber trough.
Features of fiber channel:
1. Adopt full arc design, and the corner transition rounded angle of the fiber outlet and various tees and four-ways is ≥40mm to ensure that the radius of bending curvature of the optical fiber is ≥40mm;
2. The main and row channels are used to deploy the optical fibers separately, and the wiring rules are orderly;
3. The main and column channels are made of flame-retardant plastics, and the surface is sprayed with plastic, which is beautiful and neat;
4. The fiber outlet is a flame retardant material, and the installation position is flexible, which can meet the needs of fiber discharge in various places;
5. Large fiber outlet capacity is optional;
6. Three-way and four-way provide branch interfaces in different directions of optical fiber wiring;
7. The optical fiber channel can be installed separately or fixed on the cable rack;
8. The combustion performance of all plastic parts of the channel: the combustion performance level reaches GB/T2048 1996~FV-0 level;
Plastic fiber channel product specifications: height 100mm, width 120mm, 240mm, 340mm;
Metal fiber channel product specifications: height 100mm, width 100mm, 200mm, 300mm, 400mm.
Illustrate:
(1) Large fiber outlet, suitable for large-capacity fiber removal in steel or aluminum alloy fiber channels;
(2) Medium-sized fiber outlet, suitable for steel or aluminum alloy fiber channel conventional capacity fiber downport;
(3) Small fiber outlet, suitable for steel or aluminum alloy fiber channel to use a small amount of fiber;
(4) Multi-functional mobile fiber outlet, suitable for the use of conventional capacity fiber in various optical fiber channels; Strong versatility;
(5) Mobile fiber outlet, suitable for steel or aluminum alloy fiber channel conventional capacity fiber displacement.
Fiber channel installation method:
1. Installation method on the top of the distribution frame
This installation method is suitable for multiple patch panels in parallel or with equipment connected to patch cords in the vicinity of patch panels. Use the mounting holes at the top of the patch panel and the equipment to fix the channel support rod and effectively connect the channel.
2. Installation method against the wall
This installation method can be used when the jumper needs to walk a long distance, there is no equipment to provide support on the way, and the path of the jumper is relatively close to the wall.
3. Ceiling installation method
When the jumper needs to travel a long distance and there is no equipment to provide support on the way, and the path of the jumper is far from the wall, the expansion screw can be driven into the ceiling and the accessory can be used to support the channel. This installation method is flexible and not limited by the location of the equipment in the equipment room, but it must be made that the ceiling is strong enough to withstand the weight of the channel and jumper.
4. Use the installation method of the row frame
When the distribution frame is under the row frame, the channel support rod can be fixed by the row frame, and the channel can be effectively connected.
How to distinguish between ABS fiber channel and PVC fiber channel
There are too many advertisements on the Internet about ABS fiber trough, in fact, there are very few domestic manufacturers of fiber optic troughs, most of the companies on the Internet are resale, and there are fewer companies that can produce ABS or PC/ABS fiber troughs, because the PVC fiber trough will age and become brittle after a few years, which seriously affects the optical fiber communication security of the computer room, in order not to be fooled, the following shares a simple way to distinguish between ABS fiber trough and PVC fiber trough.
1. PVC, whose scientific name is polyvinyl chloride, contains chlorine elements, and will slowly release chlorine at room temperature, and when the temperature reaches about 60 °C or above, a large amount of chlorine will be released, which is harmful to the human body. The main disadvantage of PVC is that it will age and become brittle after a few years.
PVC cannot directly produce optical fiber channels, and PVC must be doped with calcium carbonate to produce optical fiber channels. The specific gravity of PVC is about 1.33 g/cm3, and the specific gravity of PVC doped with calcium carbonate is more than 1.6 g/cm3.
2. ABS is the abbreviation of acrylonitrile-butadiene-styrene copolymer, which is a terpolymer composed of acrylonitrile, butadiene and styrene. ABS has excellent comprehensive physical and mechanical properties, excellent low temperature impact resistance and good stability. The specific gravity of ABS is between 1.05 g/cm3 and 1.1 g/cm3.
The alloy of PC/ABS overcomes the shortcomings of PC and ABS raw materials, carries forward the advantages of each other, and blends the two to improve the heat resistance, toughness, impact strength and flame retardancy of ABS, improve the processing performance of PC, and reduce production costs. The specific gravity of PC/ABS alloys is between 1.1 g/cm³ and 1.2 g/cm3. Because of the toxicity and easy decomposition and aging characteristics of PVC, the mainland has stipulated in the nineties of the last century that PVC shall not be used in water pipes and products related to people's livelihood. Abroad, limited to the EU RoHS2.0 directive and the requirements of low smoke and halogen-free, the use of PVC optical fiber troughs is basically prohibited. Operators in mainland China require manufacturers to provide fiber optic troughs made of ABS.
Based on the above introduction of ABS, PC/ABS, PVC fiber troughs, we can easily distinguish:
1. Look at the weight: the weight of the 240 optical fiber channel with the same thickness of 2.8-3.0mm is about 4 kg, which can be judged to be ABS or PC/ABS fiber channel, and the weight is more than 6 kg is the PVC fiber channel.
2. Combustion: burn the optical fiber channel with a lighter, there is the smell of burning rubber, yellow flame, black smoke, and obvious molten boiling phenomenon, and the colloid condenses on the groove after cooling and is not easy to wipe off by hand, which is ABS or PC/ABS optical fiber channel;
3. The best way is to send it to the testing agency for testing, the cost is not high, and the material is very accurate.
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