EN 50288-1:2003
(Main)Multi-element metallic cables used in analogue and digital communication and control - Part 1: Generic specification
Multi-element metallic cables used in analogue and digital communication and control - Part 1: Generic specification
Mehradrige metallische Daten- und Kontrollkabel für analoge und digitale Übertragung - Teil 1: Fachgrundspezifikation
Câbles métalliques à éléments multiples utilisés pour les transmissions et les commandes analogiques et numériques - Partie 1: Spécification générique
Multi-element metallic cables used in analogue and digital communication and control - Part 1: Generic specification
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SLOVENSKI SIST EN 50288-1:2004
STANDARD
april 2004
Multi-element metallic cables used in analogue and digital communication and
control - Part 1: Generic specification
ICS 33.120.20 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 50288-1
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2003
ICS 33.120.20 Supersedes EN 50288-1:2001
English version
Multi-element metallic cables used in analogue
and digital communication and control
Part 1: Generic specification
Câbles métalliques à éléments multiples Mehradrige metallische Daten-
utilisés pour les transmissions und Kontrollkabel für analoge
et les commandes analogiques und digitale Übertragung
et numériques Teil 1: Fachgrundspezifikation
Partie 1: Spécification générique
This European Standard was approved by CENELEC on 2003-10-01. 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, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50288-1:2003 E
Foreword
This European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data
communication cables, of Technical Committee CENELEC TC 46X, Communication cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was
approved by CENELEC as EN 50288-1 on 2003-10-01.
This European Standard supersedes EN 50288-1:2001
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) 2004-10-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-10-01
_________
– 3 – EN 50288-1:2003
Contents
Page
1 Scope.4
2 Normative references . 4
3 Definitions. 5
4 Requirements for cable construction . 6
4.1 Conductors . 6
4.2 Insulation. 6
4.3 Cable elements. 7
4.4 Identification of cabling elements. 7
4.5 Screening of cabling elements. 7
4.6 Cable make-up . 8
4.7 Filling compounds . 8
4.8 Interstitial fillers . 8
4.9 Screening of the cable core. 8
4.10 Moisture barriers . 8
4.11 Protective wrappings. 8
4.12 Sheath………………………………………………………………………………9
4.13 Bedding layers for metallic protection . 9
4.14 Metallic protection . 9
4.15 Integral suspension strand . 9
4.16 Oversheath……………………………………………………………………….9
4.17 Fauna protection .9
4.18 Chemical and /or environmental protection . 9
5 Test methods for completed cables…………………………………………….10
5.1 Electrical test methods . 12
5.2 Mechanical test methods. 12
5.3 Environmental test methods . 12
5.4 Fire performance test methods. . 12
Bibliography. 13
1 Scope
When used together with EN 50290 and EN 50289, this European Standard covers
cables for instrumentation, inter-connection of equipment and information technology
cabling applications.
Cables for information technology cabling systems, covered by this standard are
suitable for use in digital and analogue data systems meeting the requirements, for
example, of EN 50090-2-1, EN 50090-3-1, EN 50098-1, EN 50098-2 and EN 50173.
Instrumentation cables covered by this standard are suitable for connecting
instruments and control systems for analogue or digital signal transmission.
Unless otherwise specified, all cables covered by this standard may be subjected to
voltages greater than 50 V a.c or 75 V d.c. but not more than 300 V a.c. or 450 V d.c.
and shall meet the essential requirements of the low voltage directive. Due to current
limitation related to the conductor cross sectional area, they are not intended for direct
connection to mains electricity supply. The maximum current rating per conductor is
less than or equal to 175 mA unless otherwise specified in the relevant sectional
specification.
Cabling elements as defined in 4.3 of this standard may be incorporated in hybrid
construction cables together with coaxial or optical fibre cabling elements.
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 cited publications are listed hereafter. For dated references,
subsequent amendments to or revisions 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 cited publication applies, together with any
amendments.
EN 10002-1 Tensile testing of metallic materials - Part 1: Method of test
at ambient temperature
EN 50173 Information technology - Generic cabling systems
EN 50289 Series Communication Cables - Specifications for tests methods
1)
EN 50290-1-2 Communication cables - Part 1-2: Definitions
Communication cables - Part 2: Common design rules and
EN 50290-2 Series
construction
EN 60811-1-1 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)
1)
At draft stage.
– 5 – EN 50288-1:2003
EN 60811-1-3 Insulating and sheathing materials of electric and optical
cables - Common test methods - Part 1-3: General
application - Methods for determining the density - Water
absorption tests - Shrinkage test (IEC 60811-1-3)
EN 60811-1-4 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)
HD 402 S2 Standard colours for insulation for low-frequency cables and
wires (IEC 60304)
IEC 60028 International standard of resistance for copper
IEC 60189-1 Low-frequency cables and wires with PVC insulation and
PVC sheath - Part 1: General test and measuring methods
3 Definitions
For the purposes of this European Standard, the definitions given in EN 50290-1-2
and EN 50173 apply in addition to the following:
3.1
horizontal cable
cable suitable for connecting a floor distributor to a telecommunications outlet. It is
suitable for horizontal installation in ducts, trunking, suspended floors and ceiling
cavities
3.2
building backbone cable
cable suitable for connecting a building distributor to a floor distributor and may also
connect floor distributors in the same building. It is suitable for horizontal installation
or vertical installation between floors provided the cable has adequate mechanical
strength
NOTE Horizontal cable as defined in 3.1 may also be used as building backbone cable provided that it
has adequate mechanical strength and fire performance characteristics.
3.3
work area cable
a cable connecting the telecommunications outlet to the terminal equipment
3.4
patch cord cable
flexible cable unit or element with connector(s) used to establish connections on a
patch panel
NOTE Work area cables, as defined in 3.3, may be used as patch cord cable in any distributor of a
generic building wiring system to interconnect with equipment or to cross-connect between cabling
systems.
3.5
campus backbone cable
cable suitable for connecting a campus distributor to a building distributor(s). If used
outdoors or for direct burial, it shall have adequate protection for its operational
environment
3.6
equipment cable
a cable connecting equipment to a distributor
3.7
instrumentation cable
a multi-element cable suitable for connecting instruments and control systems. It may
incorporate screening, armouring and/or moisture barriers or environmental protection
layers
4 Requirements for cable construction
4.1 Conductors
Conductors may be solid or stranded.
The conductivity of copper conductors shall be in accordance with IEC 60028.
Stranded conductors shall consist of wires circular in section and assembled, without
insulation between them, by concentric stranding or bunching. As most of these
cables are used together with insulation displacement connecting devices (IDC), a
maximum of seven strands should be used.
The solid conductors or the individual wires of stranded conductor may be plain or
metal-coated.
There shall be no joint in the wire made subsequent to the last wire drawing operation.
Joints in individual strands of a stranded copper inner conductor shall be cold pressure
welded, brazed or silver soldered using a non acid flux such that the strand diameter shall
not be increased.
No joint in an individual strand shall be within 0,3 m of a joint in any other individual
strand.
4.2 Insulation
The choice of the insulating material shall take into account electrical and
environmental requirements.
The insulation material(s) shall meet the requirements of the relevant part or parts of
EN 50290-2, or otherwise as detailed in the appropriate sectional specification.
Conductor insulation shall be composed of one or more suitable dielectric materials.
The insulation may be solid, cellular or composite (e.g. foam-skin).
The insulation shall be continuous, having a thickness as uniform as possible. When
required, the thickness of the insulation shall be measured in accordance with the
method specified in 8.1 of EN 60811-1-1.
– 7 – EN 50288-1:2003
The insulation shall be applied to fit closely to the conductor. When required, the
stripping properties of the insulation shall be checked in accordance with the method
specified in EN 50289-3-17. When not used with IDC termination, it shall be possible
to strip the insulation from the conductor easily and without visible damage to the
conductor, its coating, or the insulation remaining on the conductor.
4.3 Cable elements
The cable element is
- a single insulated wire, or
- a pair consisting of two insulated conductors twisted together and designated wire
“a” and wire “b”, or
- a triple consisting of three insulated conductors twisted together and designated
wire “a”, wire “b” and wire “c” in order of rotation, or
- a quad consisting of four insulated conductors twisted together and designated
wire “a”, wire “c”, wire “b” and wire “d” in order of rotation. Wires “a” and “b” form
pair 1 and wires “c” and “d” form pair 2.
The choice of the lay length of the cable elements in the finished cable shall take into
account the transmission requirements, handling performance and identification.
4.4 Identification of cabling elements
When required, the insulated conductors shall be identified by colours and/or
additional ring markings and/or symbols achieved by the use of coloured insulation or
by a coloured surface using extrusion, printing or painting. Colours shall be clearly
identifiable and shall correspond reasonably with the standard colours shown in
HD 402.
The colour(s) or the symbol used for core identification shall be durable such that it
cannot be removed when tested to EN 50289-3-8.
4.5 Screening of cabling elements
When required by the relevant sectional specification the cabling elements shall be
screened by one or any combination of the following:
- a metal tape;
- a metal tape laminated to a plastic tape;
- a plain or coated metal braid;
- a helical wrap of parallel copper wires;
- a semi-cond
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