Bsi bs en 50290 2 23 2013

BS EN 50290-2-23:2013

BSI Standards Publication

Communication cables Part 2-23: Common design rules and
construction — Polyethylene insulation
for multi-pair cables used in access
telecommunication networks: Outdoor
cables


BS EN 50290-2-23:2013

BRITISH STANDARD

National foreword
This British Standard is the UK implementation of EN
50290-2-23:2013. It supersedes BS EN 50290-2-23:2002 which is
withdrawn.
The UK participation in its preparation was entrusted to Technical
Committee EPL/46, Cables, wires and waveguides, radio frequency
connectors and accessories for communication and signalling.
A list of organizations represented on this committee 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.
© The British Standards Institution 2013. Published by BSI Standards
Limited 2013
ISBN 978 0 580 82665 8
ICS 29.035.20; 33.120.10

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 30 November 2013.
Amendments issued since publication
Date

Text affected


BS EN 50290-2-23:2013

EN 50290-2-23

EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM

November 2013

ICS 29.035.20; 33.120.10

Supersedes EN 50290-2-23:2001

English version

Communication cables Part 2-23: Common design rules and construction Polyethylene insulation for multi-pair cables used in access
telecommunication networks: Outdoor cables
Câbles de communication Partie 2-23: Règles de conception
communes et construction Polyéthylène pour enveloppes isolantes

Kommunikationskabel Teil 2-23: Gemeinsame Regeln für
Entwicklung und Konstruktion –
Polyethylen-Isoliermischungen für
vielpaarige Kabel in
Telekommunikationsnetzwerken:
Außenkabel

This European Standard was approved by CENELEC on 2013-09-16. 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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,
Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.

CENELEC

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -

All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50290-2-23:2013 E


BS EN 50290-2-23:2013
EN 50290-2-23:2013

-2-

Contents
Foreword ................................................................................................................................................................ 3
1

Scope ............................................................................................................................................................... 5

2

Normative references ..................................................................................................................................... 5

3

Compound test requirements ....................................................................................................................... 6

4

Cable test requirements ................................................................................................................................. 6

5

Health, Safety and Environmental Regulations ........................................................................................... 6

Bibliography ......................................................................................................................................................... 10


BS EN 50290-2-23:2013
-3-

EN 50290-2-23:2013

Foreword
This document (EN 50290-2-23:2013) has prepared by CLC/TC 46X "Communication cables".
The following dates are fixed:
•

•

latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
latest date by which the national
standards conflicting with this
document have to be withdrawn

(dop)

2014-09-16

(dow)

2016-09-16

This document supersedes EN 50290-2-23:2001.
EN 50290-2-23:2013 includes the following significant technical changes with respect to EN 50290-2-23:2001:
−

The document has been entirely restructured.

−

The main change is the introduction of the new Table 1 for the test to be performed on granules.

This document should be read in conjunction with Part 2-20 of EN 50290, the product standard EN 50407 (all
parts) and other applicable product standards.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use
within Certain Voltage Limits (LVD - 2006/95/EC).
EN 50290-2, Communication cables, is divided into the following sub-parts:
−

Part 2-1: Common design rules and construction;

−

Part 2-2: Common design rules and construction  Polyethylene insulation for multi element metallic data
cables for indoor application [currently at Enquiry stage];

−

Part 2-3: Common design rules and construction  Polyethylene insulation for coaxial cables [currently at
Enquiry stage];

−

Part 2-4: Common design rules and construction  Polypropylene insulation for coaxial cables [currently at
Enquiry stage];

−

Part 2-20: Common design rules and construction  General;

−

Part 2-21: Common design rules and construction  PVC insulation compounds;

−

Part 2-22: Common design rules and construction  PVC sheathing compounds;

−

Part 2-23: Common design rules and construction  PE insulation [the present document];


BS EN 50290-2-23:2013
EN 50290-2-23:2013

-4-

−

Part 2-24: Common design rules and construction  PE sheathing;

−

Part 2-25: Common design rules and construction  Polypropylene insulation for compounds;

−

Part 2-26: Common design rules and construction  Halogen free flame retardant insulation compounds;

−

Part 2-27: Common design rules and construction  Halogen free flame retardant thermoplastic sheathing
compounds;

−

Part 2-28: Common design rules and construction  Filling compounds for filled cables;

−

Part 2-29: Common design rules and construction  Cross-linked PE insulation compounds;

−

Part 2-30: Common design rules and construction  Poly(tetrafluoroethylene-hexafluoropropylene) (FEP)

insulation and sheathing;

−

Part 2-32: Common design rules and construction  Halogen free insulation compounds for flame retardant
and fire resistant cables [currently at Enquiry stage].
_________


BS EN 50290-2-23:2013
-5-

EN 50290-2-23:2013

1 Scope
This European Standard gives specific requirements for PE compounds to be used for the insulation of
telephone wire for external plant.
Using raw material and type test data as outlined in this standard, the raw material supplier will have sufficient
data to demonstrate compliance and warrant that the material is suitable for the specified application.

2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable
for its application. For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
EN 50290-2-20, Communication cables  Part 2-20: Common design rules and construction  General
EN 60216 (all parts), Electrical insulating materials  Thermal endurance properties (IEC 60216, all parts)
EN 60811-401, Electric and optical fibre cables  Test methods for non-metallic materials  Part 401:
Miscellaneous tests  Thermal ageing methods  Ageing in an air oven (IEC 60811-401)
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 60811-408, Electric and optical fibre cables  Test methods for non-metallic materials  Part 408:
Miscellaneous tests  Long-term stability test of polyethylene and polypropylene compounds (IEC 60811-408)
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 60811-502, Electric and optical fibre cables  Test methods for non-metallic materials  Part 502:
Mechanical tests  Shrinkage test for insulations (IEC 60811-502)
EN 60811-510, Electric and optical fibre cables  Test methods for non-metallic materials  Part 510:
Mechanical tests  Methods specific to polyethylene and polypropylene compounds  Wrapping test after
thermal ageing in air (IEC 60811-510)
EN 60811-512, Electric and optical fibre cables  Test methods for non-metallic materials  Part 512:
Mechanical tests  Methods specific to polyethylene and polypropylene compounds  Tensile strength and
elongation at break after conditioning at elevated temperature (IEC 60811-512)
EN 60811-513, Electric and optical fibre cables  Test methods for non-metallic materials  Part 513:
Mechanical tests  Methods specific to polyethylene and polypropylene compounds  Wrapping test after
conditioning (IEC 60811-513)
EN ISO 527-1:2012,
(ISO 527-1:2012)

Plastics 

Determination

of

tensile

properties 

Part

1:

General

principles

EN ISO 527-2:2012, Plastics  Determination of tensile properties  Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2:2012)


BS EN 50290-2-23:2013
EN 50290-2-23:2013

-6-

EN ISO 527-3:1995, Plastics  Determination of tensile properties  Part 3: Test conditions for films and
sheets (ISO 527-3:1995)
EN ISO 527-4:1997, Plastics  Determination of tensile properties  Part 4: Test conditions for isotropic and
orthotopic fibre-reinforced plastic composites (ISO 527-4:1997)
EN ISO 527-5:2009, Plastics  Determination of tensile properties  Part 5: Test conditions for unidirectional
fibre-reinforced plastic composites (ISO 527-5:2009)
EN ISO 868, Plastics and ebonite  Determination of indentation hardness by means of a durometer (Shore
hardness) (ISO 868)
EN ISO 1133 (all parts), Plastics  Determination of the melt mass-flow rate (MFR) and melt volume-flow rate
(MVR) of thermoplastics (ISO 1133, all parts)
EN ISO 1183 (all parts), Plastics  Methods for determining the density of non-cellular plastics (ISO 1183, all
parts)
EN ISO 11357-6, Plastics  Differential scanning calorimetry (DSC)  Part 6: Determination of oxidation

induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6)
ISO 974, Plastics  Determination of the brittleness temperature by impact

3

Compound test requirements

The tests are to be carried out on granules or moulded plaques produced from granules of compound. This data
shall be provided by the compound supplier. For compounds intended for foam application the properties shall
be measured on unexpanded material. Relevant test methods, requirements and limits shall be included in any
supply specification of the compound.
Specific requirements are shown in Table 1. In the case of special applications, additional requirements could be
specified.

4

Cable test requirements

The anticipated performance assumes standard cable design and conventional process technology and is
specified (Table 2). Using type test data the compound supplier is expected to demonstrate compliance and
warrant that the material is suitable for the specified application.
In the case of special applications, additional requirements could be specified.

5

Health, Safety and Environmental Regulations

The compounds are subject to Health, Safety and Environmental requirements as defined in EN 50290-2-20.
Any deviations or compliance failures shall be identified by the compound supplier.

-7-

EN 50290-2-23:2013

Table 1  Insulation compounds  Physical properties of granules
Characteristics

a

Test method

Unit

Solid

Foam
d

LD/MD

HD

A

B

C

≤ 0,940

>0,940

to be
recorded

to be
recorded

to be
recorded

EN ISO 1183
(all parts)

g/cm

EN ISO 1133
(all parts)

g/10 min

≤ 0,5
e
≤ 2,5

≤ 1,0

n/a

n/a

n/a

Melt flow index (140 °C/5,0 kg)

EN ISO 1133
(all parts)

g/10 min

n/a

n/a

to be
recorded

to be
recorded

to be
recorded

3

Hardness Shore D (1 s)

EN ISO 868

[-]

>50

>58

>50

>58

>58

4

Low Temperature brittleness

ISO 974

°C

< -76

< -76

< -76

< -76

< -76

5

Mechanical characteristics

5.1

Tensile strength- median, min.

MPa

12

18

12

15

18

5.2

Elongation at break- median, min.

%

300

300

300

300

300

min

>50

>50

>50

>50

>50

%

8

6

6

6

6

b

1

Density

2a

Melt flow index (190 °C/2,16 kg)

2b

6
7
a

c

c

EN ISO 527
(all parts)

Oxidative Induction Time (200 °C)
Measurement of mass increase
max.

3

f

EN ISO 11357-6

g

EN 60811-407

All values of Table 1 shall be provided by the compound supplier; see Clause 3.
Tolerance for the nominal value of a specific compound is +/- 0,003 g/cm³.
c
Tolerance for the nominal value of a specific compound is +/- 25%.
d
For Foam-Skin application.
e
For LLDPE or LMDPE.
f
Alternatively, the test may be carried out on granules in presence of a piece of copper conductor with typical minimum value of 30 min.
g
To be measured on a sample cut from a pressed plaque of 0,5 mm. Test specimen according to EN ISO 527-1:2012, Clause 5,
EN ISO 527-2:2012, Clause 5, EN ISO 527-3:1995, Clause 5, EN ISO 527-4:1997, Clause 5 and EN ISO 527-5:2009, Clause 5, is a convenient
sample format.
b


EN 50290-2-23:2013

-8Table 2  Wire insulation properties

Characteristics
1

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

2

Mechanical characteristics

Test method
EN 60216
a
(all parts)

Unit

Solid

Foam
b

LD/MD

HD

A

B

C

°C

70

80

70

70

70

MPa

10

18

3,5

5

8

%

300

300

125

150

300

°C
h
%

100 ± 2
1
5

115 ± 2
1
5

100 ± 2
1
5

100 ± 2
1
5

100 ± 2
1
5

°C
h
%

100 ± 2
10 x 24
300

100 ± 2
10 x 24
300

80 ± 2
7 x 24
125

80 ± 2
7 x 24
125

c

100 ± 2
7 x 24
200

°C
h

100 ± 2

14 x 24
No crack

100 ± 2
14 x 24
No crack

100 ± 2
14 x 24
No crack

100 ± 2
14 x 24
No crack

100 ± 2
14 x 24
No crack

EN 60811-501

Results to be obtained
2.1

Tensile strength- median,min.

2.2

Elongation at break- median,min.

3

Shrinkage
- temperature
- duration
Result to be obtained, max.

EN 60811-502

4

Elongation at break after ageing
e
for unfilled cables
- temperature
- duration
Result to be obtained- median,min.

EN 60811-401

Wrapping after ageing
- temperature
- duration
Result to be obtained

EN 60811-510

5

c

-9-

EN 50290-2-23:2013

Table 2 (continued)
Characteristics
6

6.1

6.2

Performances after conditioning at
elevated temperature
d
for filled cables
- temperature
- duration
e

Test method

Elongation at break
Result to be obtained
- median,min.
- variation,max.

EN 60811-501

Wrapping test

EN 60811-513

7

a
b
c
d
e
f
g

Long term stability test
- temperature
- duration
Result to be obtained

f

Measurement of mass increase
g
for filled cables
- temperature
- duration
Result to be obtained- max.

Solid

Foam
b

LD/MD

HD

A

B

C

°C
h

60/70 ± 2
7 x 24

60/70 ± 2
7 x 24

60/70 ± 2
7 x 24

60/70 ± 2
7 x 24

60/70 ± 2

7 x 24

%
%

200
± 30

200
± 30

100
-

100
-

200
-

°C
h

70 ± 2
24
No crack

70 ± 2
24
No crack

70 ± 2
24
No crack

70 ± 2
24
No crack

70 ± 2
24
No crack

°C
h

100 ± 2
42 x 24
No crack

100 ± 2
42 x 24
No crack

n/a

n/a

100 ± 2
42 x 24

No crack

°C
h
%

60/70 ± 2
10 x 24
13

60/70 ± 2
10 x 24
13

60/70 ± 2
10 x 24
18

60/70 ± 2
10 x 24
18

60/70 ± 2
10 x 24
15

EN 60811-512

- temperature
- duration

Result to be obtained
6.3

Unit

EN 60811-408

EN 60811-407

Any procedure based on the Arrhenius principals which can predict 20 000 h life expectancy at the indicated temperature.
Foam-skin application.
When cellular part is based on HD resin the ageing temperature shall be 100 °C.
For information only, OIT after pre-conditioning may be recorded.
If elongation at break cannot be done(i.e. if the insulation cannot be removed from the conductor without damage), wrapping test according to EN 60811-510 shall be performed.
For monitoring both raw materials and cables, OIT test may be performed in accordance with EN 60811-408 with typical minimum value of 15 min.
Only to be performed on solid and foam-skin insulation.


BS EN 50290-2-23:2013
EN 50290-2-23:2013 (E)

- 10 -

Bibliography
[1]
EN 50407-1, Multi-pair cables used in high bit rate digital access telecommunication networks  Part 1:
Outdoor cables
1)

[2]

prEN 50407-2 , Multi-pair cables used in high bite rate digital access telecommunication networks  Part 2:
Indoor multi-pair/quad cables for installation in Multi Dwelling Units shaft supporting universal services, xDSL and
applications up to 100 MBits over IP
[3]
EN 60811-201, Electric and optical fibre cables  Test methods for non-metallic materials  Part 201:
General tests  Measurement of insulation thickness (IEC 60811-201)
[4]
EN 60811-203, Electric and optical fibre cables  Test methods for non-metallic materials  Part 203:
General tests  Measurement of overall dimensions (IEC 60811-203)

1) Currently at Enquiry stage.


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