Bsi bs en 50290 2 27 2002 + a1 2007 (2010)

BRITISH STANDARD

BS EN
50290-2-27:
2002+A1:2007
Incorporating
corrigendum
May 2010

Communication
cables —
Part 2-27: Common design rules and
construction — Halogen free flame
retardant thermoplastic sheathing
compounds

ICS 29.035.20; 33.120.10


BS EN 50290-2-27:2002+A1:2007

National foreword
This British Standard is the UK implementation of
EN 50290-2-27:2002+A1:2007, incorporating corrigendum May 2010.
It supersedes BS EN 50290-2-27:2002 which is withdrawn.
The UK participation in its preparation was entrusted by Technical
Committee EPL/46, Cables, wires and waveguides, RF connectors and
accessories for communication and signalling, to Subcommittee
EPL/46/1, Communication cables.
A list of organizations represented on this subcommittee can be
obtained on request to its secretary.

This publication does not purport to include all the necessary
provisions of a contract. Users are responsible for its correct
application.
Compliance with a British Standard cannot confer immunity
from legal obligations.

This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee
on 15 April 2002

© BSI 2010

ISBN 978 0 580 71597 6

Amendments/corrigenda issued since publication
Amd. No.

Date

Comments

17271

31 August 2007

Table 1 replaced

31 August 2010

Implementation of CENELEC corrigendum
May 2010; Table 1 replaced


EN 50290-2-27:2002+A1

EUROPEAN STANDARD
NORME EUROPÉENNE

June 2007

EUROPÄISCHE NORM
ICS 29.035.20; 33.120.10

Supersedes HD 624.7 S1:1994
Incorporating corrigendum May 2010

English version

Communication cables
Part 2-27: Common design rules and construction –
Halogen free flame retardant thermoplastic
sheathing compounds
Câbles de communication
Partie 2-27: Règles de conception
communes et construction –
Mélanges pour gainage thermoplastique
sans halogène et avec propagation
retardée de flamme

Kommunikationskabel
Teil 2-27: Gemeinsame Regeln
für Entwicklung und Konstruktion Halogenfreie flammwidrige
thermoplastische Mantelmischungen

This European Standard was approved by CENELEC on 2001-11-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

CENELEC

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC -

All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50290-2-27:2002 E

BS EN 50290-2-27:2002+A1:2007
EN 50290-2-27:2002+A1:2007 (E)

-2Foreword

This European Standard was prepared by a joint working group of the Technical Committees CENELEC
TC 46X, Communication cables, and CENELEC TC 86A, Optical fibres and optical fibre cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as EN 50290-2-27 on 2001-11-01.
This European Standard supersedes HD 624.7 S1:1994.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement

(dop)

2002-08-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn

(dow)

2004-08-01

This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the
European Commission and the European Free Trade Association.
__________

Foreword to amendment A1
This amendment to the European Standard EN 50290-2-27:2002 was prepared by a joint working group
of the Technical Committee CENELEC TC 46X, Communication cables, and the Technical Committee
CENELEC TC 86A, Optical fibres and optical fibre cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as amendment A1 to EN 50290-2-27:2002 on 2007-03-01.
The following dates were fixed:
– latest date by which the amendment has to be
implemented at national level by publication of
an identical national standard or by endorsement

(dop)

2008-03-01

– latest date by which the national standards conflicting
with the amendment have to be withdrawn

(dow)

2010-03-01

This amendment introduces a new grade of halogen free insulation compound for high temperature.

__________


-31

BS EN 50290-2-27:2002+A1:2007

EN 50290-2-27:2002+A1:2007 (E)

Scope

This Part 2-27 of EN 50290 gives specific requirements for halogen free flame retardant thermoplastic
sheathing compounds used in communication cables.
It is to be read in conjunction with Part 2-20 of EN 50290.
2

Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply
to this European Standard only when incorporated in it by amendment or revision. For undated references
the latest edition of the publication referred to applies (including amendments).
EN 60811-1-1:1995

Insulating and sheathing materials of electric and optical cables - Common test
methods -- Part 1-1: General application - Measurement of thickness and overall
dimensions - Tests for determining the mechanical properties
(IEC 60811-1-1:1993)

EN 60811-1-2:1995

Insulating and sheathing materials of electric cables - Common test methods
Part 1-2: General application -- Thermal ageing methods
(IEC 60811-1-2:1985 + corr. May 1986 + A1:1989)

EN 60811-1-4:1995

Insulating and sheathing materials of electric and optical cables - Common test
methods -- Part 1-4: General application - Tests at low temperature
(IEC 60811-1-4:1985 + corr. May 1986 + A1:1993)

EN 60811-3-1:1995

Insulating and sheathing materials of electric and optical cables - Common
test methods -- Part 3-1: Methods specific to PVC compounds - Pressure test
at high temperature - Tests for resistance to cracking
(IEC 60811-3-1:1985 + corr. May 1986)

HD 405.3 S1:1993

Tests on electric cables under fire conditions -- Part 3: Tests on bunched wires or
cables (IEC 60332-3:1992)

IEC 60754-2:1991
+ A1:1997

Test on gases evolved during combustion of materials from cables Determination of degree of acidity of gases by measuring pH and conductivity

3

Requirements

In case of specific applications, additional performances could be needed. Relevant test methods and
requirements shall be included in the detail specifications of the cables.

BS EN 50290-2-27:2002+A1:2007
EN 50290-2-27:2002+A1:2007 (E)

-4-

Table 1 - Halogen free flame retardant thermoplastic sheathing compounds
Characteristics
1

Maximum rated temperature
at cable for which the
compound can be used

2

Mechanical characteristics
(see note 1)

2.1

In state of delivery

2.11

Tensile strength
- median, min.

2.12
2.2

2.21
2.22

Test method

Unit
°C

70

90

MPa

9

9

%

125

125

Ageing conditions
- temperature
- duration

°C
h

100 ± 2
7 x 24

110 ± 2
7 x 24

Tensile strength
- variation, max.

%

± 30

EN 60811-1-1
9.2

Elongation at break
- median, min.
After ageing

EN 60811-1-2
8.1

Elongation at break
- median, min.
- variation, max.

4

Behaviour at low temperature

4.1

Bending test at low
b
temperature

%
%

°C

Result to be obtained
Elongation test at low
c
temperature

± 30
a

100
± 30
> 0,6

100
± 40
≤ 0,6

100

± 40

EN 60811-1-4
8.2

Test conditions
- temperature

4.2

Grades

- 15 ± 2

- 15 ± 2

No cracks

No cracks

EN 60811-1-4
8.4

Test conditions
- temperature

°C

-15 ± 2

-15 ± 2

Elongation, min.

%

20

20


BS EN 50290-2-27:2002+A1:2007
EN 50290-2-27:2002+A1:2007 (E)

-5-

Table 1 - Halogen free flame retardant thermoplastic sheathing compounds (continued)
Characteristics
5

Pressure test at high
temperature

Test method

Result to be obtained
- depth of indentation
median, max.
Oxygen index (see note 2)

7

Corrosivity

8

Smoke opacity (see note 3)

9

Toxicity

a
b
c

Grades

EN 60811-3-1
8.2

Test conditions
- temperature
- duration (for all values of
cable diameter)

6

Unit

°C

80 ± 2

90 ± 2

h

4

4

%

50

50

To meet

To meet

To meet

EN ISO 4589-2
IEC 60754-2

Under
consideration

Provisional value.
For outer diameters up to and including 12,5 mm.
For outer diameters exceeding 12,5 mm.

NOTE 1 Guidance for the preparation of samples for tensile and elongation tests before and after ageing. If the samples under
test have ridges on the inside caused by the inner components of the cable (cores or wire braid) then these ridges should be
removed by buffing, cutting or skiving.
NOTE 2 Oxygen index measurement has been found to be a suitable indicator to guide selection and monitoring of materials
used in cables which have to meet the fire performance tests specified in the relevant cable specification.
NOTE 3 For selection of materials used in cables, IEC 60695-6 may be considered.


BS EN
50290-2-27:
2002+A1:2007

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