What is halogen cable?
What is halogen cable?
Halogen-free cables are cables whose materials are not processed with the elements of the halogen group. As non-conductors, halogens such as chlorine are excellent insulators and are therefore often used as jacket material for cables. The most common example of this is polyvinyl chloride (PVC).
What is the purpose of halogen free cable?
Halogen free or zero halogen cabling is used in many areas of the cable and wiring industry, including aircraft, rail and construction. Used to protect wiring, it is proven to limit the amount of toxic gas emitted when it comes into contact with heat.
Is PVC insulation halogen free?
The halogen-free material is a material that does not contain a group of halogen elements (fluorine, chlorine, bromine, iodine, and astat). PVC or polyvinyl chloride is not a halogen-free material because it contains chlorine.
What cable uses a halogen free jacket material?
LSZH wire and cable are also called: low smoke non-halogen (LSNH), low-smoke halogen-free (LSHF), and low-smoke zero-halogen (LS0H).
What is the difference between CMR and CMP cable?
CMP cables are plenum cables; these cables are used if networking must be done in air ducts. CMR cables are riser cables. These are used for regular networking from room to room, as long as the cable does not need to pass through an air duct.
Is PTFE low smoke?
Low Smoke materials such as PTFE and HFI 90 provide high insulation resistance and low dielectric loss. Our fluoropolymers are halogenated high temperature materials that are highly flame retardant. They do not generate much smoke and are exceptional in oils and fuels.
Is PE a Lszh?
PE cables may be firm and solid but are more flexible. Has more flame-resistant properties than the PE cable and primarily used for plenum areas. PUR is very flexible and scratch resistant that is mainly used in low-temperature environments. LSZH is less toxic than PVC.
Is halogen free cable low smoke?
Unlike PVC cables and those made of other compounds which produce vast amounts of dense black smoke, toxic fumes and acid gas when exposed to fire, LSZH cables produce very low levels of smoke and toxic fume and no acid gases.
When would you use a CMP cable?
CMP cables are plenum cables; these cables are used if networking must be done in air ducts. They can be used for commercial or residential spaces. They will not combust and cannot actually cause fires.
Do I need CMR cable?
For the latter, it is a practical application if the home network must be wired through ducts. CMR cables are also used more for residential homes. These cables are less strict when it comes to fire requirements than CMP cables; CMR cables must pass a vertical burn test to prove that they can self-extinguish.
Is FEP low smoke?
Foamed FEP is commonly used for plenum applications. Plenum rated cables can exhibit a fire resistance or a low smoke quality and is used in building construction.
Is polyethylene a Lszh?
Low-Smoke Zero-Halogen (LSZH or LSOH) is a type of plastic used in the wire and cable industry for cable jacketing. Most network cables (CAT5, CAT6, etc.) are insulated with polyvinyl chloride (PVC), polyethylene, or thermoplastic urethane (TPU).
What makes a cable halogen free and what are the halogens?
A cable is halogen-free if no halogens such as chlorine, fluorine or bromine are used in the cable’s insulation and sheath material. Cable glands, hose systems, connectors or shrink hoses, such as the PROTECT HF shrinking tube from LAPP, can also be made of halogen-free plastics and are thus halogen free.
What is the IEC standard for halogen free cables?
Halogen-free cables according to IEC 60754-1 or DIN EN 60754-1. Briefly summarized, this part of the standard specifies the test equipment as well as the procedure for determining the amount of halogen acid gas generated during the combustion of the materials of cables and insulations.
What kind of insulation is used for halogen free terminals?
Most Elpress Pre-insulated Halogen Free Terminals & Connectors are using Polyamide (PA) or Polycarbonate (PC) as insulation material. Halogen free cables are engineered and designed so that emissions during a fire offer low toxicity and low smoke:
Why are there no halogen cables in the subway?
Research showed that the majority of deaths were caused by the toxic gases and by smoke that was inhaled. After this catastrophe, no halogen-containing cables were allowed to be used in the London subway system. As a result, many industries and sectors did not want to use halogen-containing cables any more.