IEC TR 62222 pdf – Fire performance of communication cables installed in buildings
This document describes the test methods for various parameters relating to the reaction to fireproperties of metallic and optical fibre communications cables. The parameters have particularimportance for cables intended to be installed within buildings and other structures.
This document also maps the test methods and associated limits applied to the fire hazardscreated by particular installation conditions and which can be referenced by other international,
regional and national standards. For example,it is important that compliance with therequirements and recommendations for installation methods in lSOIEC 14763-2taking intoconsideration this document improve safety concerning fire.
2Normative references
There are no normative references in this document.
3 Terms，definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms apply.
ISO and lEc maintain terminological databases for use in standardization at the followingaddresses:
.IEC Electropedia: available at http://www.electropedia.orgl
.iso Online browsing platform: available at http://www.iso.org/obp3.1 Terms and definitions
3.1.1
asphyxiant
toxicant that causes hypoxia，which can result in central nervous system depression orcardiovascular effects
[SOURCE: ISO 13943:2017,3.23, modified -The note to entry has been removed.]
3.1.2
cabling
system of telecommunication cables,cords and connecting hardware that supports theconnection of information technology equipment
[SOURCE: ISO/IEC11801-1:2017,3.1.21]
3.1.3
chimney effect
upward movement of hot fire effluent caused by convection currents confined within anessentially vertical enclosure
[SOURCE: ISO 13943:2017,3.50,modified -The note to entry has been removed.]
3.1.4
combustible
capable of being ignited and burned
[SOURCE: ISO 13943:2017,3.52]
3.1.5
combustion
exothermic reaction of a substance with an oxidizing agent
Note 1 to entry: Combustion ganerally emits fire effluant accompanied by flames andor glowing.[SOURCE: ISO 13943:2017,3.55]
3.1.6
communication cable
assembly of suitably insulated coaxial conductors，twisted pairs of insulated conductors oroptical fibres fabricated to meet transmission,mechanical and environmental requirements,and
sufficient to allow conveyance of information between two points with the minimum of radiation
3.1.7
compartment
discrete fire zone designed to contain a fire within that zone
Note 1 to entry: Compartments are also known as “”fire compartments”.3.1.8
compartmentation
division of premises into compartments in order to provide protection for the rest of the premises
3.1.9
convection
transfer of heat by movement of a fluid
[SOURCE: ISO 13943:2017,3.66]
3.1.10
contribution to fire
energy released by a product influencing the fire growth
3.1.11
corrosion damage
physical and/or chemical damage or impaired function caused by chemical action
[SOURCE: ISO 13943:2017,3.69]
3.1.12
damaged length
maximum extent in a specified direction of damaged area
3.1.13
enclosure
volume defined by bounding surfaces,which may have one or moreopenings
[SOURCE: ISO 13943:2017,3.92]