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SIST EN 50085-2-4:2009
01-september-2009
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Cable trunking systems and cable ducting systems for electrical installations - Part 2-4:
Particular requirements for service poles
Elektroinstallationskanalsysteme für elektrische Installationen - Teil 2-4: Besondere
Anforderungen für freistehende Installationseinheiten
Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques -
Partie 2-4: Règles particulières pour les colonnes de service
Ta slovenski standard je istoveten z: EN 50085-2-4:2009
ICS:
29.120.10 ,QãWDODFLMVNHFHYL]D Conduits for electrical
HOHNWULþQHQDPHQH purposes
SIST EN 50085-2-4:2009 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50085-2-4:2009
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SIST EN 50085-2-4:2009
EUROPEAN STANDARD
EN 50085-2-4
NORME EUROPÉENNE
June 2009
EUROPÄISCHE NORM
ICS 29.120.10
English version
Cable trunking systems and cable ducting systems
for electrical installations -
Part 2-4: Particular requirements for service poles and service posts
Systèmes de goulottes Elektroinstallationskanalsysteme
et systèmes de conduits-profilés für elektrische Installationen -
pour installations électriques - Teil 2-4: Besondere Anforderungen
Partie 2-4: Règles particulières für freistehende Installationseinheiten
pour les colonnes et colonnettes
This European Standard was approved by CENELEC on 2009-05-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50085-2-4:2009 E
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 2 –
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 213, Cable
management systems.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50085-2-4 on 2009-05-01.
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) 2010-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-05-01
This European Standard is a system standard for cable management products used for electro-
1)
technical purposes. It relates to Low Voltage Directive 2006/95/EC through consideration of the
essential requirements of this directive.
This European Standard is supported by separate standards to which references are made.
This Part 2-4 is to be used in conjunction with EN 50085-1:2005 “Cable trunking systems and cable
ducting systems for electrical installations – Part 1: General requirements”.
This Part 2-4 supplements or modifies the corresponding clauses of EN 50085-1:2005. Where a
particular clause or subclause of Part 1 is not mentioned in this Part 2-4, that clause or subclause of
Part 1 applies as far as is reasonable. Where this Part 2-4 states “addition” or “replacement”, the
relevant text of Part 1 is to be adapted accordingly.
NOTE The following numbering system is used:
– subclauses, tables and figures that are additional to those in Part 1 are numbered starting from 101;
– additional annexes are lettered AA, BB, etc.
__________
1)
Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation
of the laws of Member States relating to electrical equipment designed for use within certain voltage limits,
OJ L 374, 27.12.2006, p. 10–19.
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Contents
Page
1 Scope . 4
2 Normative re f e r enc es . 4
3 Definitions . 5
4 General requirements . 5
5 General conditions for tests . 5
6 Classification . 6
7 Marking and documentation . 7
8 Dimensions . 7
9 Construction . 7
10 Mechanical properties . 8
11 Electrical properties . 15
12 Thermal properties . 16
13 Fire hazard . 16
14 External influences . 16
15 Electromagnetic com patibility . 17
Annex A (informative) Types of cable trunking systems (CTS) and cable ducting
systems (CDS) . 22
Annex B (informative) A-deviations . 22
Annex C (normative) CTS/CDS IK code . 22
Annex AA (normative) Use of test results according to EN 50085-2-4 for service poles
and service posts being part of a CTS/CDS intended for wall or ceiling mounting
covered by EN 50085-2-1 or floor mounting covered by EN 50085-2-2 . 23
Annex AB (normative) Routine test for the socket outlets wiring of pre-wired service
poles and service posts (correct polarity and protection against electric shock) . 26
Figures
Figure 101 − Types and application of service poles and service posts . 19
Figure 102 – Detail of the cylinder for vertical load test in accordance with 10.5.103 . 20
Figure 103 – Detail of the circular plate for vertical load test in accordance with 10.5.104 . 21
Tables
Table AA.1 – EN 50085-2-1 . 23
Table AA.2 – EN 50085-2-2 . 24
Table AB.1 – Diagrammatic representation of routine tests to be applied to the socket
outlets wiring of pre-wired service poles and service posts . 26
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 4 –
1 Scope
Replacement:
This European Standard specifies requirements and tests for cable trunking systems (CTS) and cable
ducting systems (CDS) intended for the accommodation, and where necessary for the electrically
protective separation, of insulated conductors, cables and possibly other electrical equipment in
electrical and/or communication systems installations. The maximum voltage of these installations is
1 000 V a.c. and 1 500 V d.c.
Service poles and service posts are intended to be mounted in free space and in contact with mounting
surface(s) only at one or two ends, where the word “mounted” means fixed or placed on the floor with a
weighted base or linked to a mounting surface through a flexible component.
NOTE Service poles and service posts can also be part of a CTS/CDS intended for wall or ceiling mounting covered by
Part 2-1 or floor mounting covered by Part 2-2 and are then also tested according to Part 2-1 and/or Part 2-2 as appropriate.
This European Standard does not apply to conduit systems, cable tray systems, cable ladder systems,
powertrack systems or equipment covered by other standards.
This European Standard shall be used in conjunction with EN 50085-1:2005 “Cable trunking systems
and cable ducting systems for electrical installations – Part 1: General requirements” which is referred
to in this document as Part 1.
2 Normative references
This clause of Part 1 is applicable except as follows:
Add the following references:
EN 20535 1994 Paper and board – Determination of water absorptiveness – Cobb
method (ISO 535:1991)
EN 50085-1 2005 Cable trunking systems and cable ducting systems for electrical
installations – Part 1: General requirements
EN 60068-2-75 1997 Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
(IEC 60068-2-75:1997)
EN 60695-11-2 2003 Fire hazard testing – Part 11-2: Test flames – 1 kW nominal pre-mixed
flame – Apparatus, confirmatory test arrangement and guidance
(IEC 60695-11-2:2003)
EN 62262 2002 Degrees of protection provided by enclosures for electrical equipment
against external mechanical impacts (IK code) (IEC 62262:2002)
EN ISO 536 1996 Paper and board – Determination of grammage (ISO 536:1995)
ISO 9328-7 2004 Steel flat products for pressure purposes – Technical delivery conditions –
Part 7: Stainless steels
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3 Definitions
This clause of Part 1 is applicable except as follows:
Additional definitions:
3.101
service pole
CTS/CDS intended to be mounted in free space and in contact with mounting surfaces only at two
ends
NOTE 1 Service pole can be part of a CTS/CDS intended for wall, ceiling or floor mounting.
NOTE 2 The word “mounted” means fixed or placed on the floor with a weighted base or linked to a mounting surface through
a flexible component.
3.102
service post
CTS/CDS intended to be mounted in free space and in contact with mounting surface only at one end
NOTE 1 Service post can be part of a CTS/CDS intended for wall, ceiling or floor mounting.
NOTE 2 The word “mounted” means fixed or placed on the floor with a weighted base or linked to a mounting surface through
a flexible component.
3.103
pre-equipped service pole / service post
service pole / service post already assembled by the manufacturer or responsible vendor with one or
more electrical accessories and/or communication components
3.104
pre-wired service pole / service post
service pole / service post already assembled by the manufacturer or responsible vendor, wired by
means of insulated conductors and/or cables connecting one or more electrical accessories and/or
communication components
3.105
modular service pole / service post
service pole / service post which includes the assembly of two or more modules allowing to increase
the height or width or depth of the product
3.106
rated current, rated voltage
value assigned to a pre-wired and/or pre-equipped service pole / service post by the manufacturer and
to which operation and performances characteristics are referred
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for tests
This clause of Part 1 is applicable except as follows:
5.1 Replace by:
5.1 Unless otherwise specified, tests according to this standard are type tests.
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 6 –
Additional subclause:
5.101 Unless otherwise specified in the relevant test, service poles / service posts are tested on the
longest version declared by the manufacturer and service poles / service posts which differ only by
being shorter than one which complies with the requirements for a given test are deemed to comply
with the requirements for the same test.
6 Classification
This clause of Part 1 is applicable except as follows:
6.4.1
This subclause of Part 1 is not applicable.
Additional subclauses:
6.101 According to floor treatment for service poles / service posts placed on the floor
6.101.1 Service poles / service posts for dry-treatment of floor
6.101.2 Service poles / service posts for wet-treatment of floor
6.102 According to resistance to vertical load applied through small surface area
6.102.1 CTS/CDS for 500 N
6.102.2 CTS/CDS for 750 N
6.102.3 CTS/CDS for 1 000 N
6.102.4 CTS/CDS for 1 500 N
6.102.5 CTS/CDS for 2 000 N
6.102.6 CTS/CDS for 2 500 N
6.102.7 CTS/CDS for 3 000 N
6.103 Optional classification according to resistance to vertical load applied through large
surface area
6.103.1 CTS/CDS for 2 000 N
6.103.2 CTS/CDS for 3 000 N
6.103.3 CTS/CDS for 5 000 N
6.103.4 CTS/CDS for 10 000 N
6.103.5 CTS/CDS for 15 000 N
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7 Marking and documentation
This clause of Part 1 is applicable except as follows:
7.3 Add the following three last indents:
- for modular service poles / service posts the constraints concerning the number or configuration
of assembled modules;
- whether non vertical mounting is allowed;
- whether the flexible component, if any, linking to the mounting surface is not part of the enclosure.
8 Dimensions
This clause of Part 1 is applicable except as follows:
Addition:
There are no dimensional requirements.
9 Construction
This clause of Part 1 is applicable except as follows:
9.1 Sharp edges
Replace the second paragraph by:
Compliance is checked by inspection using one sample, if necessary after cutting the samples apart.
Replace the fourth paragraph by:
Compliance is checked by inspection using one sample.
9.3 Means for protective separation and/or retention
Replace the second paragraph by:
Compliance is checked by the tests of 10.3 and 10.5.
Additional subclause:
9.101 Service poles / service posts which are likely to be moved during use shall be provided with
means to relieve conductors from strain in terminals or terminations.
NOTE A service pole with a weighted base is an example of service pole likely to be moved during use. A clamped service
pole is not considered likely to be moved during use.
When a cable anchorage is used, compliance is checked by inspection and by the test of 9.12.
Other means are checked by the following test.
After installation according to the manufacturer’s instructions a pull force of 100 N ± 2 N is applied to
this mean in the most unfavourable direction for 60 s ± 5 s.
During the application of the force there shall be no stress on insulated conductors.
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 8 –
9.102 Areas of service poles / service posts shall have adequate resistance to vertical load when
both following conditions are fulfilled:
• these areas are reasonably subjected to vertical load during installation and/or application. Some
areas of service poles or service posts are considered not to be subjected to vertical load due to
their dimensions or shape or height at least 100 mm above the floor;
• damage to these areas would impair mechanical or electrical safety.
Compliance is checked by the test of 10.5.103 and, when a resistance to vertical load through large
surface area is declared, by the test of 10.5.104.
9.103 Insulated conductors and/or cables used to connect electrical accessories and/or
communication components in pre-wired service poles / service posts shall be selected in accordance
with the rated voltage of the connected equipment and, in case of electrical accessories, its rated
current.
Compliance is checked by inspection.
9.104 Service poles / service posts placed on the floor declared according to 6.101.2 shall avoid
water coming into contact with insulated conductors and live parts during wet-treatment of floor by one
or a combination of the following methods:
- method 1: ensuring by design that water does not come into contact with insulated conductors and
live parts when the water level is 10 mm above the upper level of the floor covering;
- method 2: providing manufacturer's instructions which require that insulated conductors and live
parts are positioned not less than 10 mm above the upper level of the floor covering;
- method 3: providing appropriate sealing.
For method 1, compliance is checked by measurement. For method 2, compliance is checked by
inspection. For method 3, compliance is checked by the following test.
The test is made using the lower part of the service pole / service post fixed on a plywood board
16 mm thick, with a 50 mm minimum spacing between the sample and the edge of the support.
Ingress of water is detected by the use of dry absorbent paper positioned between the plywood board
and the sample. The absorbent paper is placed only in areas intended to accommodate insulated
conductors or live parts.
The absorbent paper has a water absorptive height longitudinal of 75 mm per 10 min according to
EN 20535 and a basis weight of 250 g per m² according to EN ISO 536.
The sample is placed carefully into a tray containing water to simulate a (10, 0/-1) mm height of water
on the floor.
NOTE For easy detection of water absorption, coloured water can be used.
After 15 s ± 1 s the sample is removed carefully from the tray and the exterior of the sample is
immediately wiped.
The service pole / service post is removed from the plywood board.
The absorbent paper shall show no trace of water absorption.
10 Mechanical properties
This clause of Part 1 is applicable except as follows:
10.2 Cable support test
This subclause of Part 1 is not applicable.
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10.3 Impact test
10.3.2 Impact test for installation and application
This subclause of Part 1 is applicable except as follows:
Replace the first paragraph by:
The test is carried out with the impact test values declared according to Table 6.
Replace in the last paragraph EN 50102 by EN 62262.
Addition:
10.3.2.101 The resistance to impact is checked on service poles / service posts including a flexible
component, if any, used to link the service pole / service post to the mounting surface if the flexible
component provides a safety function.
NOTE 1 Examples of safety function are retaining the service pole / service post or relieving conductors from strain or
providing an enclosure.
The test is carried out on an assembly consisting of
- for a service pole / service post not longer than 1 000 mm: a complete service pole / service post;
NOTE 2 The length to be considered does not take into account the flexible component if any.
- for a service pole / service post longer than 1 000 mm: one or more sections 1 000 mm ± 5 mm
long to simulate the various characteristics (function, design, material, …) within the service pole /
service post.
For service poles / service posts which differ only in length the test is carried out on the shortest and
the longest ones. Other service poles / service posts within the range are deemed to comply with the
requirements for this test.
For a service pole intended for vertical mounting, the test is carried out only on parts of the service pole
which will be lower than 1 500 mm above the floor when installed in accordance with manufacturer’s
instructions.
The assembly includes system components, if any, to simulate normal use.
Before the test, non-metallic system components and composite system components are aged at a
temperature declared according to Table 3 for 168 h ± 4 h continuously.
The test is carried out with the impact test values declared according to Table 6.
The impact test apparatus according to Clause 4 of EN 60068-2-75:1997, is mounted on a solid wall or
structure providing sufficient support.
For service poles, the assembly is placed horizontally in the impact test apparatus. In order to prevent
any movement of the ends, the assembly is secured at both ends. This method of securing should not
introduce a compressive force in the longitudinal axis of the assembly which would not exist in normal
application. Between both ends, the assembly is not supported and is free to move in the impact
direction.
Service posts are tested in their normal mounting position. The assembly is secured at the appropriate
end to prevent any movement of this end without any additional support. Products intended to be
mounted vertically are tested vertically whenever possible, otherwise they are tested horizontally.
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 10 –
No impact is applied to knockouts, membranes and the like.
When the assembly consists of a section, no impact is applied within 50 mm of any open end of the
assembly.
NOTE 3 When another system component has been included at an end of the assembly to prevent movement, this end is still
considered open.
Compliance is checked according to 10.3.2.104 after carrying the test of:
- 10.3.2.102 for service poles / service posts with declared minimum installation and application
temperature of +5 °C or higher;
- 10.3.2.103 for service poles / service posts with declared minimum installation and application
temperature lower than +5 °C.
10.3.2.102 The test is carried out at an ambient temperature of 20 °C ± 5 °C. The hammer is allowed
to fall so that an impact is applied as far as possible perpendicular to the accessible region of the
assembly likely to be the weakest.
10.3.2.103 The assemblies are placed in a cabinet at a temperature declared according to Table 2.
After 2 h, each assembly is, in turn, removed from the cabinet and immediately placed in position in the
impact test apparatus.
At 12 s ± 2 s after the removal of the assembly from the cabinet the hammer is allowed to fall so that
an impact is applied as far as possible perpendicular to the accessible region of the assembly likely to
be the weakest. Compliance with impact applied before 10 s provides also compliance with this test of
the standard.
Instead of placing the assemblies in a cabinet and applying the impact at 12 s ± 2 s after the removal of
the assembly from the cabinet, it is allowed to apply the impact in a climatic chamber at a temperature
declared according to Table 2 on assemblies placed at this temperature for 2 h. Compliance in the
climatic chamber is sufficient. In case of failure in the climatic chamber, compliance using the cabinet
provides compliance with the standard.
10.3.2.104 After the test:
- the assembly shall show no cracks or similar damage visible to normal or corrected vision without
magnification, and
- the assembly shall remain intact
such that safety is not impaired.
In case of doubt, the test of 14.1.3 is carried out on the impacted assemblies, with the exception of the
open ends, to check that the declared degree of protection against access to hazardous parts is
maintained. The declared degree of protection against access to hazardous parts is either the
additional letter directly declared by the manufacturer according to 6.7.3, if any, or the degree of
protection against access to hazardous parts indirectly declared by the manufacturer according to
6.7.1.
NOTE Any cracks in internal dividers which are not likely to impair electrical safety or use are ignored. Electrical safety can be
impaired by any of the following ways:
– when the impact creates a sharp edge on a partition which may damage insulated conductors or cables (see 9.1),
– when the impact decreases the protective separation between compartments in such a way that the protective separation
becomes ineffective (see 9.11).
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10.4 Linear deflection test
This test is only applicable to service poles / service posts intended to be mounted in a non vertical
position.
Compliance is checked by the following test.
The test is carried out on a complete service pole / service post mounted horizontally. If no
manufacturer's instructions for the orientation of the service pole / service post are provided, the test is
carried out in the most unfavourable orientation.
The test sample is subjected to an evenly distributed load of 1,0 g/mm² per metre length of the
declared usable area for cables.
The load consists of copper cables complying with class 5, Table 3 of HD 383 S2 or flexible insulated
conductors or cables of similar mass per meter which are placed in the sample.
Cables of 25 mm² nominal cross section are placed in the samples so that approximately 50 % of the
load is achieved.
Cables of 2,5 mm² nominal cross section are placed on top of the larger cables to achieve the total
load within a tolerance of ± 100 g.
To allow for settlement of the sample, a pre-load of approximately 10 % of the load is applied and
removed after approximately 5 min. The measurement apparatus is then calibrated to zero.
After 1 h (0 / + 5 min), with the load still applied, the deflection is measured:
- for service poles on the lower surface, at mid length and in the middle of the width;
- for service posts on the lower surface, at the free end and in the middle of the width.
The deflection shall not exceed:
- for service poles, 1 % of the length of the service pole;
- for service posts, 5 % of the length of the service post.
Access covers of the service pole / service post and cable separators shall remain adequately fixed so
as to fulfil their intended function and electrical safety shall not be impaired.
In case of doubt, the test of 14.1.3 is carried out on the loaded test sample to check that the declared
degree of protection against access to hazardous parts is maintained. The declared degree of
protection against access to hazardous parts is either the additional letter directly declared by the
manufacturer according 6.7.3, if any, or the degree of protection against access to hazardous parts
indirectly declared by the manufacturer according 6.7.1.
10.5 External load test
Additional subclauses:
10.5.101 Horizontal load test for service poles not likely to be moved during use
NOTE A clamped service pole is considered not likely to be moved during use. A service pole with a weighted base is an
example of service pole likely to be moved during use.
The test is carried out on a complete service pole mounted between two rigid parallel surfaces.
For service poles which differ only in length the test is carried out on the shortest and the longest ones.
Other service poles within the range are deemed to comply with the requirements for this test.
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SIST EN 50085-2-4:2009
EN 50085-2-4:2009 – 12 –
The service pole is mounted according to the manufacturer’s instruction.
For service poles intended to be clamped between floor and ceiling:
- unless otherwise specified in the manufacturer’s instructions, the test surfaces are of stainless
steel X5CrNi18-9, with a thickness of at least 2 mm according to ISO 9328-7, and a surface
quality of 2B, mounted on a rigid base, e.g. concrete;
- after mounting, the distance between floor and ceiling is increased by 5 mm ± 1 mm without any
further clamping of the service pole.
A push force of 400 N ± 20 N is applied perpendicular to the longitudinal axis of the sample in the most
unfavourable position and direction.
The force is applied for 60 s ± 5 s on a surface measuring approximately 80 mm × 80 mm using an
intermediate rigid element. If it is not possible to apply the force on an 80 mm × 80 mm surface using a
square intermediate element,
...