Fiber optic cable outer sheath material and the importance of fire rating
what kind of fiber optic cable fire prevention are rated? In the NEC ( The national electrical code) , optical fiber cable fire rating often divided into OFNP/OFCP, OFNR/OFCR, OFNG/OFCG, OFN/OFC.
& # 61548; OFNP/OFCP, flame retardant grade in NEC standard ( Supercharging level) , the highest level. Assumptions with fan blowing force the flame a bundle of flame retardant grade ( Supercharging level) The flame spread on the fiber optic cable, fiber optic cable will be within 5 m self extinguishing, and non-toxic non-corrosive gas generation.
& # 61548; In the vertical level (OFNR/OFCR, NEC standard Main level) Second, level. Also use the fan blowing force the flame bundles of trunk fiber optic cable, although the flame spread will be within 5 m self extinguishing, however, it does not smoke or toxicity.
& # 61548; OFNG/OFCG OFN/OFC commercial level and general level, respectively, both under the standard of fiber optic cable used in the environment of low requirements for fire retardant.
different outer sheath material of fiber optic cable can be up to what the fire rating?
although the fiber optic cable fire rating and the relationship between the outer sheath material not necessarily, but in general, if the Plenum as the outer sheath of optical fiber cable do NEC flame retardant grade test, their level of fire prevention theory of OFNP; If PVC or Riser as the outer sheath of optical fiber cable do NEC flame retardant grade test, their level of fire prevention theory of OFNR; If LSZH as outer sheath of optical fiber cable do NEC flame retardant grade test, their level of fire prevention theory of OFN.
that is, adopting Plenum, PVC/Riser, LSZH material do the outer sheath of optical fiber cable, can satisfy the requirement of data center for fire retardant cable. The rapid ( FS) Can provide the whole series of Plenum, PVC/Riser with LSZH material of fiber optic cable.
different optical fiber cable outer sheath material should be how to choose? In order to prevent and reduce the wiring scenarios such as data center the probability of a fire, you must know your data center belongs to which level, do for what purpose, what is the special requirement, etc. , such ability based on the criteria to select different optical fiber cable outer sheath material.
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