The so-called armored fiber optic cable, is outside the optical fiber is then wrapped in a layer of protective of “armor”, is mainly used to meet the requirements of animals rodent, moisture proof, etc. Armored cable is a power cable made up by assembling two or more electrical conductors, generally held together with an overall sheath. This electrical cable with high protective covering is used for transmission of electrical power, especially for underground wiring needs. However, these cables may be installed as permanent wiring within buildings, buried in the ground, run overhead, or may even be kept exposed. They are available as single conductor cable as well as multi-conductor cables.
To be more precise, armored cables can be explained as electrical cables with stainless steel or galvanized wire wound over the conductors and insulation. They often have an outer plastics sheath for main distribution supply and buried feeders.
The main role of Armored fiber optic cable
Armored optical fiber in telecommunications fiber optic long-distance lines, twele trunk transmission has important applications. Armored fiber mostly used for general network management usually come into contact with two fiber optic network equipment in the engine room building internal connections. The armored fiber length is relatively short. Often referred to as the armored jumper.
General armoured jump line there is a layer of metal armoured in skin, make protection inside the fiber core, crush tensile resistance function, can prevent rat bite to eat by moth, etc.
The Types of Armored fiber cable
According to the use of premises
Indoor armored cable:
A single armor and indoor fiber optic cable. Single-core indoor armored cable structure: Single mode indoor armored cable, Tight fiber+ kevlar (tensile effect) + stainless steel hose (the compressive strength, resistance to bending, rodent) + stainless steel woven wire (torsional) + outer sheath (usually using PVC, according to the barrier role of fire-retardant PVC, LSZH, Teflon, silicone tube, etc.)
Single armor excluding stainless steel braided wire cable; Double armored fiber optic cable with stainless steel hose and stainless steel woven wire.
Advantages: high tensile strength, high compressive strength, rodent bite; possess resistant to the improper torsional bending damage; construction is simple, saving maintenance costs; adapt to harsh environments and man-made damage.
Disadvantages: weight heavier than common fiber optical cable. The price is higher than common fiber optic cable
Outdoor armored cable:
There are divided into light armored and heavy armored (outdoor fiber optic cable). light armored strip and aluminum, is to strengthen and anti-rodent bite. heavy armored is wrapped in a circle wire, generally used in the riverbed, submarine. The market in general armored cable than the non-armored cable is cheap, usually steel, aluminum, much cheaper than the aramid (Kevlar is mainly used for special occasions).
According to the material divided by metal armor
There are steel armored and aluminum armored. Was usually bolt-type core with a layer of metal armored to protect narural bent, with high pressure, resistance to the advantage of the strong pull, provides excellent cable protection and safety.
Aerial optical fiber cable
If it is an outdoor aerial optical fiber cable, in order to avoid the harsh environment, human or animal damage (such as someone with a shotgun with a birds when the fibers interrupted case often occurs), play a role in the protection core armored cable ships. Recommended steel armor, light armor, cheap and durable better. Light armor, the price is cheap and durable. There are two general outdoor aerial cables: one is the center beam tube; another Standed. In order to durable, overhead layer sheath, and direct burial with two layers of sheating safer.