prEN 50290-2-27

Communication cables - Part 2-27: Common design rules and construction - Halogen free polyolefin based sheathing compounds for cables having improved flame and fire properties (HFFR)

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

Câbles de communication Partie 2-27: Règles de conception communes et construction -

Komunikacijski kabli - 2-27. del: Skupna pravila za načrtovanje in konstrukcijo - Brezhalogenske zmesi za oplaščenje kablov na osnovi poliolefinov z izboljšanimi lastnostmi zadrževanja ognja (HFFR)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 50290-2-27:2020
01-september-2020

Komunikacijski kabli - 2-27. del: Skupna pravila za načrtovanje in konstrukcijo -

Brezhalogenske zmesi za oplaščenje kablov na osnovi poliolefinov z izboljšanimi
lastnostmi zadrževanja ognja (HFFR)
Communication cables - Part 2-27: Common design rules and construction - Halogen

free polyolefin based sheathing compounds for cables having improved flame and fire

properties (HFFR)
Ta slovenski standard je istoveten z: prEN 50290-2-27
ICS:
29.035.20 Plastični in gumeni izolacijski Plastics and rubber insulating
materiali materials
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
oSIST prEN 50290-2-27:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50290-2-27:2020
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oSIST prEN 50290-2-27:2020
EUROPEAN STANDARD DRAFT
prEN 50290-2-27
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 29.035.20; 33.120.10 Will supersede EN 50290-2-27:2002 and all of its
amendments and corrigenda (if any)
English Version
Communication cables - Part 2-27: Common design rules and
construction - Halogen free polyolefin based sheathing
compounds for cables having improved flame and fire properties
(HFFR)
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-10-09.
It has been drawn up by CLC/TC 46X.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Project: 68455 Ref. No. prEN 50290-2-27 E
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oSIST prEN 50290-2-27:2020
prEN 50290-2-27:2020 (E)
1 Contents Page

2 European foreword .................................................................................................................................................. 3

3 1 Scope ............................................................................................................................................................... 4

4 2 Normative references ....................................................................................................................................... 4

5 3 Terms and definitions ....................................................................................................................................... 4

6 4 Compound test requirements ........................................................................................................................... 5

7 5 Cable test requirements ................................................................................................................................... 5

8 6 Health, safety and environmental (HSE) requirements .................................................................................... 5

9 Bibliography ............................................................................................................................................................. 8

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oSIST prEN 50290-2-27:2020
prEN 50290-2-27:2020 (E)
11 European foreword

12 This document (prEN 50290-2-27:2020) has been prepared by CLC/TC 46X “Communication cables”.

13 This document is currently submitted to the Enquiry.
14 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)

15 This document will supersede EN 50290-2-27:2002 and all of its amendments and corrigenda (if any).

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oSIST prEN 50290-2-27:2020
prEN 50290-2-27:2020 (E)
16 1 Scope

17 This document gives specific requirements for halogen free polyolefin based sheathing compounds used for

18 halogen free communication cables with improved characteristics in the case of fire.

19 Compounds, described by this document, are commonly also named HFFR or HFFR-LS (halogen free,

20 flame/fire retardant, low smoke), see also EN 50290-2-20.

21 It is expected to be read in conjunction with EN 50290-2-20, the product standards EN 50288 series, EN 60794

22 series and other applicable product standards.

23 Improved characteristics in the case of fire are demonstrated by specific fire tests on cables for flame/fire

24 retardant applications (e.g. single or bunched cable fire test). Additional tests to prove the characteristics in case

25 of fire, e.g. such as smoke emission test, might also be part of the dedicated product standard or specification.

26 This document describes the compound types as given in Table 1
27 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
28 2 Normative references

29 The following documents are referred to in the text in such a way that some or all of their content constitutes

30 requirements of this document. For dated references, only the edition cited applies. For undated references, the

31 latest edition of the referenced document (including any amendments) applies.

32 EN 50290-2-20, Communication cables - Part 2-20: Common design rules and construction - General

33 EN 60754-1, Test on gases evolved during combustion of materials from cables - Part 1: Determination of the

34 halogen acid gas content (IEC 60754-1)

35 EN 60754-2, Test on gases evolved during combustion of materials from cables - Part 2: Determination of

36 acidity (by pH measurement) and conductivity (IEC 60754-2)

37 EN 60684-2:2011, Flexible insulating sleeving - Part 2: Methods of test (IEC 60684-2:2011)

38 EN 60811-402, Electric and optical fibre cables - Test methods for non-metallic materials - Part 402:

39 Miscellaneous tests - Water absorption tests (IEC 60811-402)
40 EN 60811-606, Electric and
...