EN 50290-2-24:2021
(Main)Communication cables - Part 2-24: Common design rules and construction - Polyethylene sheathing compounds
Communication cables - Part 2-24: Common design rules and construction - Polyethylene sheathing compounds
This document gives specific requirements for halogen free polyolefin based sheathing compounds used for halogen free communication cables with improved characteristics in the case of fire. Compounds, described by this document, are commonly also named HFFR or HFFR-LS (halogen free, flame/fire retardant, low smoke), see also EN 50290 2 20. It is expected to be read in conjunction with EN 50290 2 20, the product standards EN 50288 series, EN 60794 series and other applicable product standards. Improved characteristics in the case of fire are demonstrated by specific fire tests on cables for flame/fire retardant applications (e.g. single or bunched cable fire test). Additional tests to prove the characteristics in case of fire, e.g. such as smoke emission test, might also be part of the dedicated product standard or specification. This document describes the compound types as given in Table 1. Table 1 — Sheathing compounds Compound grades Max. operating temperature Comment Type 1 70°C thermoplastic standard Type 2 90°C thermoplastic, higher temperature Type 3 90°C crosslinked, higher temperature
Kommunikationskabel - Teil 2-24: Gemeinsame Regeln für Entwicklung und Konstruktion - PE-Mantelmischungen
Câbles de communication - Partie 2-24: Règles de conception communes et construction - Mélanges pour gaines en polyéthylène
Komunikacijski kabli - 2-24. del: Skupna pravila za načrtovanje in konstrukcijo - Polietilenske zmesi za oplaščenje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN 50290-2-24:2002
SIST EN 50290-2-24:2002/A1:2009
Komunikacijski kabli - 2-24. del: Skupna pravila za načrtovanje in konstrukcijo -
Polietilenske zmesi za oplaščenje
Communication cables - Part 2-24: Common design rules and construction -
Polyethylene sheathing compounds
Kommunikationskabel - Teil 2-24: Gemeinsame Regeln für Entwicklung und Konstruktion
- PE-Mantelmischungen
Câbles de communication - Partie 2-24: Règles de conception communes et
construction - Mélanges pour gaines en polyéthylène
Ta slovenski standard je istoveten z: EN 50290-2-24:2021
ICS:
29.035.20 Plastični in gumeni izolacijski Plastics and rubber insulating
materiali materials
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50290-2-24
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 29.035.20; 33.120.10 Supersedes EN 50290-2-24:2002 and all of its
amendments and corrigenda (if any)
English Version
Communication cables - Part 2-24: Common design rules and
construction - Polyethylene sheathing compounds
Câbles de communication - Partie 2-24: Règles de Kommunikationskabel - Teil 2-24: Gemeinsame Regeln für
conception communes et construction - Mélanges pour Entwicklung und Konstruktion - PE-Mantelmischungen
gaines en polyéthylène
This European Standard was approved by CENELEC on 2021-01-19. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50290-2-24:2021 E
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Compound test requirements . 6
5 Cable test requirements . 6
6 Ageing considerations . 7
7 Health, safety and environmental (HSE) requirements . 7
Bibliography . 10
European foreword
This document (EN 50290-2-24:2021) has been prepared by CLC/TC 46X “Communication cables”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022–01–19
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024–01–19
conflicting with this document have to be
withdrawn
This document supersedes EN 50290-2-24:2002 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
1 Scope
This document gives specific requirements for polyethylene sheathing compounds, as given in Table 1, for use
in inner and outer sheathing of communication cables including fibre optic cables.
It is expected to be read in conjunction with EN 50290-2-20, the product standards EN 50407 series,
EN 50117 series, EN 60794 series and other applicable product standards.
Using raw material and type test data as outlined in this document, the raw material supplier will have sufficient
data to demonstrate compliance and warrant that the material is suitable for the specified application.
There are several routes used for manufacture of polyethylene and as a consequence a number of different
types of polyethylene are defined as given in Table 1.
Table 1 — Polyethylene materials (informative)
Maximum operating
Abbreviation Material type Reactor process Polymer structure
a
temperature
°C
b
Low density High pressure/ temperature Long chain branched +70
LDPE
polyethylene radical reaction
LLDPE Linear low density Low pressure/ temperature Significant short chain +80
polyethylene catalytic reaction branching
MDPE Medium density Low pressure/ temperature Short chain branched +80
polyethylene catalytic reaction
HDPE High density Low pressure/ temperature Limited short chain +80
polyethylene catalytic reaction branching
a
Further guidance on operating temperature is contained in EN 50290-2-20
b
Upper process capability for density 0,930 g/ml. Normally density range 0,917–0,925 g/ml
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references, the
latest edition of the referenced document (including any amendments) applies.
EN 50289-4-17, Communication cables - Specifications for test methods - Part 4-17: Test methods for UV
resistance evaluation of the sheath of electrical and optical fibre cable
EN 50290-2-20, Communication cables - Part 2-20: Common design rules and construction - General
EN 60811-406, Electric and optical fibre cables - Test methods for non-metallic materials - Part 406:
Miscellaneous tests - Resistance to stress cracking of polyethylene and polypropylene compounds
(IEC 60811-406)
EN 60811-407, Electric and optical fibre cables - Test methods for non-metallic materials - Part 407:
Miscellaneous tests - Measurement of mass increase of polyethylene and polypropylene compounds
(IEC 60811-407)
EN 60811-501, Electric and optical fibre cables - Test methods for non-metallic materials - Part 501: Mechanical
tests - Tests for determining the mechanical properties of insulating and sheathing compounds (IEC 60811-501)
EN 60811-511, Electric and optical fibre cables - Test methods for non-metallic materials - Part 511: Mechanical
tests - Measurement of the melt flow index of polyethylene compounds (IEC 60811-511)
EN 60811-605, Electric and optical fibre cables - Test methods for non-metallic materials - Part 605: Physical
tests - Measurement of carbon black and/or mineral filler in polyethylene compounds (IEC 60811-605)
EN 60811-606, Electric and optical fibre cables - Test methods for non-metallic materials - Part 606: Physical
tests - Methods for determining the density (IEC 60811-606)
EN 60811-607, Electric and optical fibre cables - Test methods for non-metallic materials - Part 607: Physical
tests - Test for the assessment of carbon black dispersion in polyethylene and polypropylene (IEC 60811-607)
EN ISO 868, Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore
hardness) (ISO 868)
EN ISO 11357-6, Plastics - Differential scanni
...
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