SIST EN 50085-2-2:2009
(Main)Cable trunking systems and cable ducting systems for electrical installations - Part 2-2: Particular requirements for cable trunking systems and cable ducting systems intended for mounting underfloor, flushfloor, or onfloor
Cable trunking systems and cable ducting systems for electrical installations - Part 2-2: Particular requirements for cable trunking systems and cable ducting systems intended for mounting underfloor, flushfloor, or onfloor
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. These systems are intended for mounting underfloor, flushfloor or onfloor. This standard does not apply to CTS/CDS which are intended to be fixed to the wall and supported by the floor. This standard does not apply to conduit systems, cable tray systems, cable ladder systems, power track systems or equipment covered by other standards. This 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.
Elektroinstallationskanalsysteme für elektrische Installationen - Teil 2-2: Besondere Anforderungen für Elektroinstallationskanalsysteme für die Montage unterboden, bodenbündig, oder aufboden
Ersatz: Diese Europäische Norm legt Anforderungen und Prüfungen für Elektroinstallationskanalsysteme, die für die Aufnahme und, wo erforderlich, für die elektrische Trennung von isolierten Leitern, Kabeln, Leitungen und möglichen anderen elektrischen Betriebsmitteln in elektrischen Installationen oder Kommunikationssystemen fest. Die maximale Spannung dieser Installationen ist 1 000 V Wechselspannung und 1 500 V Gleichspannung. Die Systeme sind für die Montage unterboden, bodenbündig oder aufboden vorgesehen. Diese Norm gilt nicht für Elektroinstallationskanalsysteme, die zur Wandmontage, unterstützt durch den Fußboden, vorgesehen sind. Diese Norm gilt nicht für Elektroinstallationsrohrsysteme, Kabelträgersysteme, Stromschienensysteme oder Einrichtungen, die von anderen Normen abgedeckt sind. Diese Norm muss zusammen mit EN 50085-1:2005 „Elektroinstallationssysteme für elektrische Installationen – Teil 1: Allgemeine Anforderungen“ benutzt werden, auf welche in dieser Norm als Teil 1 Bezug genommen wird.
Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques - Partie 2-2: Systèmes de goulottes et systèmes de conduits-profilés prévus pour être montés en sous-sol, encastrés dans le sol, ou sur le sol
Remplacement: La présente Norme Européenne spécifie les règles et les essais pour les systèmes de goulotte (SG) et les systèmes de conduits-profilés (SCP) destinés au logement de conducteurs isolés, câbles et éventuels autres équipements électriques et si nécessaire à leur séparation de protection électrique, dans des installations électriques et/ou de systèmes de communication. La tension maximale de ces installations est de 1 000 V en courant alternatif et 1 500 V en courant continu. Ces systèmes sont prévus pour être montés sous le sol, encastrés dans le sol, ou sur le sol. La présente norme ne s'applique pas aux SG/SCP prévus pour être fixés à un mur et soutenus par le sol. La présente norme ne s'applique pas aux systèmes de conduit, systèmes de chemin de câble, systèmes d'échelle à câble, systèmes de canalisation préfabriquée ou aux équipements couverts par d’autres normes. La présente norme doit être utilisée conjointement avec la EN 50085-1:2005, Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques - Partie 1: Règles générales, à laquelle il est fait référence dans ce document comme Partie 1.
Sistemi kabelskih korit in sistemi kabelskih cevi za električne inštalacije - 2-2. del: Posebne zahteve za sisteme kabelskih korit in sisteme kabelskih cevi, namenjene za montažo pod tlemi, po golih tleh ali po tleh
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50085-2-2:2009
01-januar-2009
6LVWHPLNDEHOVNLKNRULWLQVLVWHPLNDEHOVNLKFHYL]DHOHNWULþQHLQãWDODFLMHGHO
3RVHEQH]DKWHYH]DVLVWHPHNDEHOVNLKNRULWLQVLVWHPHNDEHOVNLKFHYLQDPHQMHQH
]DPRQWDåRSRGWOHPLSRJROLKWOHKDOLSRWOHK
Cable trunking systems and cable ducting systems for electrical installations - Part 2-2:
Particular requirements for cable trunking systems and cable ducting systems intended
for mounting underfloor, flushfloor, or onfloor
Elektroinstallationskanalsysteme für elektrische Installationen - Teil 2-2: Besondere
Anforderungen für Elektroinstallationskanalsysteme für die Montage unterboden,
bodenbündig, oder aufboden
Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques -
Partie 2-2: Systèmes de goulottes et systèmes de conduits-profilés prévus pour être
montés en sous-sol, encastrés dans le sol, ou sur le sol
Ta slovenski standard je istoveten z: EN 50085-2-2:2008
ICS:
29.120.10 ,QãWDODFLMVNHFHYL]D Conduits for electrical
HOHNWULþQHQDPHQH purposes
SIST EN 50085-2-2:2009 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50085-2-2:2009
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SIST EN 50085-2-2:2009
EUROPEAN STANDARD
EN 50085-2-2
NORME EUROPÉENNE
November 2008
EUROPÄISCHE NORM
ICS 29.120.10
English version
Cable trunking systems and cable ducting systems
for electrical installations -
Part 2-2: Particular requirements for cable trunking systems
and cable ducting systems intended for mounting underfloor,
flushfloor, or onfloor
Systèmes de goulottes Elektroinstallationskanalsysteme
et systèmes de conduits-profilés für elektrische Installationen -
pour installations électriques - Teil 2-2: Besondere Anforderungen
Partie 2-2: Règles particulières für Elektroinstallationskanalsysteme
pour les systèmes de goulottes für die Montage unterboden,
et systèmes de conduits-profilés bodenbündig, oder aufboden
prévus pour être montés en sous-sol,
encastrés dans le sol, ou sur le sol
This European Standard was approved by CENELEC on 2008-10-01. 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, 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: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50085-2-2:2008 E
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SIST EN 50085-2-2:2009
EN 50085-2-2:2008 – 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 50085-2-2
on 2008-10-01.
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) 2009-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-10-01
This European Standard is a system standard for cable management products used for electro-
technical purposes. It relates to the Council Directives on the approximation of laws, regulations
and administrative provisions of the Member States relating 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 2-2 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 2-2 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, that clause or subclause of
Part 1 applies as far as it is reasonable. Where this Part 2 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.
__________
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SIST EN 50085-2-2:2009
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Contents
Page
1 Scope . 4
2 Normative references . 4
3 Definitions . 4
4 General requirements . 5
5 General conditions for tests . 5
6 Classification . 5
7 Marking and documentation . 6
8 Dimensions . 6
9 Construction . 6
10 Mechanical properties . 8
11 Electrical properties . 12
12 Thermal properties . 12
13 Fire hazard . 12
14 External influences . 12
15 Electromagnetic compatibility . 13
Annex A (informative) Types of Cable Trunking Systems (CTS) and Cable Ducting Systems (CDS) . 27
Annex B (informative) A-deviations . 28
Annex C (normative) CTS/CDS IK code . 28
Annex AA (normative) Mechanical load tests . 29
Bibliography . 31
Figures
Figure 101 – Types and application of CTS/CDS for underfloor, flushfloor or onfloor installations . 14
Figure 102 – Examples of trunking and ducting installations . 15
Figure 103 – Example of underfloor embedded CDS according to 3.101 . 16
Figure 104 – Example of flushfloor CTS according to 3.102 . 17
Figure 105 – Example of onfloor CTS according to 3.103. 18
Figure 106 – Principles for arrangement . 19
Figure 107 – Examples for arrangement . 19
Figure 108 – Load test set-up for CTS/CDS in accordance with 10.5.103 . 23
Figure 109 – Load test set-up for CTS/CDS in accordance with 10.5.104 . 26
Table
Table AA.1 – Mechanical load tests . 29
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SIST EN 50085-2-2:2009
EN 50085-2-2:2008 – 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.
These systems are intended for mounting underfloor, flushfloor or onfloor.
This standard does not apply to CTS/CDS which are intended to be fixed to the wall and
supported by the floor.
This standard does not apply to conduit systems, cable tray systems, cable ladder systems, power
track systems or equipment covered by other standards.
This 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 normative references:
EN 60068-2-60 1996 Environmental testing – Part 2: Tests - Test Ke: Flowing mixed
gas corrosion test (IEC 60068-2-60:1995)
EN 60068-2-75 1997 Environmental testing – Part 2-75: Tests - Test Eh: Hammer
tests (IEC 60068-2-75:1997)
3 Definitions
This clause of Part 1 is applicable except as follows:
3.1 Replace the note by:
NOTE Different types of CTS are shown in Figure 101 and explained in Clause A.2.
3.2 Replace the note by:
NOTE Different types of CDS are shown in Figure 101 and explained in Clause A.2.
3.3 Add:
f) service unit
Replace the note by:
NOTE A system does not necessarily include all system components a) to f). Different combinations of system components may
be used.
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Additional subclauses:
3.101
underfloor CTS/CDS
CTS/CDS whose components, except access units and service units, are intended to be mounted within
or under a floor and in normal use are not exposed to traffic loads (Figures 102a), 102c) and 103)
3.102
flushfloor CTS/CDS
CTS/CDS whose components, except access units and service units, are intended to be mounted flush
such that the height above the upper level of the floor covering is not more than 4 mm. The upper surface
is considered to be exposed to traffic loads (Figures 102b) and 104)
3.103
onfloor CTS/CDS
CTS/CDS whose components are intended to be mounted on a floor such that the height above the upper
level of the floor covering is greater than 4 mm. The upper surface is considered to be exposed to traffic
loads (Figures 102d) and 105)
3.104
access unit
system component intended to provide access to insulated conductors or cables
3.105
service unit
system component intended for incorporation of one or more apparatus either directly or by means of one
or more apparatus mounting devices
3.106
service unit, when not in use
service unit which has no cables connected to electrical equipments
3.107
service unit, when in use
service unit which has cables connected to electrical equipments
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows:
Additional subclauses:
6.101 According to floor treatment
6.101.1 CTS/CDS for dry-treatment of floor
6.101.2 CTS/CDS for wet-treatment of floor when the service unit is not in use
6.101.3 CTS/CDS for wet-treatment of floor when the service unit is in use
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SIST EN 50085-2-2:2009
EN 50085-2-2:2008 – 6 –
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
7 Marking and documentation
This clause of Part 1 is applicable except as follows:
Additional subclauses:
7.101 Access units and service units of systems classified according to 6.101.1 shall be marked
that they are suitable for dry treatment of floor only. The marking shall be visible by the user which
may be achieved by opening the cover.
NOTE This marking may be in the form of text or graphic.
7.102 Service units shall be marked with a warning about the potential damage to electrical
accessories by closing the cover. The marking shall be visible by the user which may be achieved
by opening the cover.
NOTE This marking may be in the form of text or graphic.
7.103 Compliance with 7.101 and 7.102 is checked by inspection.
8 Dimensions
This clause of Part 1 is applicable except as follows:
Addition:
There are no dimensions requirements.
9 Construction
This clause of Part 1 is applicable except as follows:
Additional subclauses:
9.101 Access covers of underfloor, flushfloor and onfloor CTS/CDS, which in normal use are
subjected to external mechanical loads, shall resist movement and unintentional opening.
Compliance is checked by inspection and by the tests of 10.5.
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SIST EN 50085-2-2:2009
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9.102 Service units installed flushfloor shall protect the installed electrical apparatus and the plug
from direct impact when in use. This protection shall be effective and shall not cause damage to
the outgoing cable.
Compliance is checked by inspection and by the tests of 10.3.
9.103 It shall be possible to securely fix:
- service units to the system;
- electrical apparatus to the service units.
Compliance is checked by the tests of 10.3 and 10.5.1.
9.104 When the service unit is not in use, it shall be possible to close openings intended for the
passage of cables.
Openings, when in use, in underfloor and flushfloor CTS/CDS, for the passage of cables, need not
be closed if one of its dimensions is less than 20 mm in one direction.
Compliance is checked by inspection and measurement.
9.105 Underfloor and flushfloor CTS/CDS which in normal use are embedded in screed material
shall be protected against ingress of the screed material.
Openings leading to the interior of underfloor and flushfloor CTS/CDS which in normal use, are
located below the upper level of the floor without covering, shall not be wider than 7 mm in one
direction.
Compliance is checked by inspection and measurement.
NOTE 1 The dimensioning of the maximum width of the clear opening is based on cementitious screeds according to
EN 13813 and the definitions of grain size 0-8 according EN 12620 for cementitious screeds.
NOTE 2 The cementitious screed is in accordance with EN 13813 strength class F4 and is prepared according to the
screed manufacturer’s instructions.
NOTE 3 When using screed materials with consistencies other than those described in Notes 1 and 2, the
manufacturer's instructions are used.
9.106 CTS/CDS declared according to 6.101.2 and 6.101.3 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 which may vary within the system:
- 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 an IP rating not less than IPX4;
- method 3: 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.
For method 1 compliance is checked by measurement. For method 2 compliance is checked by
the test of 14.1.2. For method 3 compliance is checked by inspection.
9.107 Access cover of service unit, if any, shall withstand repeated opening and closing as in
normal use.
Compliance is checked by 100 cycles of opening and closing of the access cover.
After the test there shall be no damage to impair the further use of the access cover.
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EN 50085-2-2:2008 – 8 –
9.108 Additional requirements are under consideration for service units intended to be installed
1)
onfloor with reference to EN 50085-2-4 .
10 Mechanical properties
This clause of Part 1 is applicable except as follows:
10.1 Replacement:
Underfloor, flushfloor and onfloor CTS/CDS shall have adequate mechanical strength.
Compliance is checked by the tests specified in 10.3 and 10.5 according to Annex AA.
10.2 Not applicable.
10.3 Impact test
10.3.2 Impact test for installation and application
Addition:
10.3.2.101 Systems components only intended to be mounted underfloor are not tested. The test
is carried out on an assembly made of one or more trunking lengths or ducting lengths with the
relevant system component, if any, to fulfil the various functions of the system and prepared
according to the manufacturer’s instructions. More than one assembly may be necessary to fulfil
the various functions of the system. In each direction, the length L of trunking length or ducting
length coming out of the functional area associated with the function of the system is as long as
the width W of the trunking length or ducting length, or 250 mm, whichever is the greater. The
tolerance of L is ± 25 mm.
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device or a junction as shown in
Figure 106.
The samples are mounted on a rigid smooth support such as a plywood board 16 mm thick, with a
50 mm minimum spacing between the assembly and the edge of the support.
NOTE 2 For flushfloor CTS/CDS additional provision may be included, if necessary, to simulate the influence of the
floor material on the side of the product.
NOTE 3 Other system components may be included, if necessary, to prevent movements. These system components
are the system components to terminate the trunking length or ducting length, if any. When there is no such system
component, a system component chosen by the manufacturer is used.
Examples for arrangement are shown in Figure 107.
Before the test non metallic system components and composite system components are aged at a
temperature declared according to Table 3 for (168 ± 4) h continuously.
10.3.2.102 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.
The samples are placed in a cabinet at a temperature declared according to Table 2.
10.3.2.103 After 2 h, each sample 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 sample 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 sample likely
to be the weakest. Compliance with impact applied before 10 s provides also compliance with this
test of the standard.
1)
In preparation.
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NOTE 1 The region likely to be the weakest can be on the relevant system component but can also be on a trunking
length or a ducting length.
No impact is applied to knockouts, membranes and the like.
No impact is applied within 50 mm of any open extremity of the sample.
NOTE 2 When an other system component has been included at an extremity of the sample to prevent movements,
this extremity is still considered open.
Instead of placing the samples in a cabinet and applying the impact at 12 s ± 2 s after the removal
of the sample from the cabinet, it is allowed to apply the impact in a climatic chamber at a
temperature declared according to Table 2 on samples 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 assemblies shall show no cracks or similar damage visible to normal or corrected vision without
magnification and
- the assemblies shall remain intact and
- the service unit cover shall be in a position
such that safety is not impaired.
In case of doubt, the test of 14.1.3 is carried out on the impacted samples 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.
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).
10.4 Not applicable.
10.5 External mechanical load test
Addition:
10.5.101 Underfloor CTS/CDS, flushfloor CTS/CDS and onfloor CTS/CDS shall have sufficient
mechanical strength against external mechanical loads likely to occur during transport, storage,
installation and normal use.
Compliance is checked by the tests of 10.5.102, 10.5.103 and 10.5.104.
Any part for temporary use only during the installation phase does not need to comply with these tests but
may be included for the test of 10.5.102 to allow compliance of other parts.
A summary of tests is given in Annex AA.
10.5.102 Load test for installation
The test is carried out on an assembly made of one or more trunking lengths or ducting lengths
with the relevant system component, if any, to fulfil the various functions of the system and
prepared according to the manufacturer’s instructions. More than one assembly may be necessary
to fulfil the various functions of the system. In each direction, the length L of trunking length or
ducting length coming out of the functional area associated with the function of the system is as
long as the width W of the trunking length or ducting length, or 500 mm, whichever is the greater.
The tolerance of L is ± 25 mm.
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SIST EN 50085-2-2:2009
EN 50085-2-2:2008 – 10 –
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device or a junction as shown in Figure 106.
The samples are mounted on a horizontal rigid smooth support such as a plywood board 16 mm
thick, with a 50 mm minimum spacing between the assembly and the edge of the support.
NOTE 2 Other system components may be included, if necessary, to prevent movements. These system components are the
system components to terminate the trunking length or ducting length, if any. When there is no such system component, a system
component chosen by the manufacturer is used.
Examples for arrangement are shown in Figure 107.
Before the test non metallic system components and composite components are aged at a
temperature declared according to Table 3 for (168 ± 4) h continuously.
A vertical force is applied centrally for 120 s ± 5 s to a steel cube of 50 mm ± 0,5 mm with an edge
radius of approximately 1 mm.
The cube is placed approximately in the middle of the length of the sample and in the most
unfavourable position in the width of the sample. In the case of multi-compartment CTS/CDS
whose partition(s) provide support, the middle of the largest compartment is selected.
To allow for settlement of the sample, a pre-load of 25 N ± 5 N is applied and then the
measurement apparatus is calibrated to zero.
For the test of CTS/CDS intended to be installed underfloor under a raised floor a force of
250 N (+ 10 N, 0) is applied.
For the test of CDS intended to be embedded underfloor and CTS/CDS intended to be installed
flushfloor a force of 750 N (+ 30 N, 0) is applied except on parts of which the cover remains visible
and above the floor level during the whole installation phase for which a force of 250 N (+ 10 N, 0)
is applied.
During the test the vertical displacement of the cube shall be less than 25 mm.
Cracks are allowed but the maximum vertical displacement of the cube shall not be exceeded.
10.5.103 Load test for application - Force applied through small surface area
The test is carried out on an assembly made of one or more trunking lengths or ducting lengths
with the relevant system component, if any, to fulfil the various functions of the system and
prepared according to the manufacturer’s instructions. More than one assembly may be necessary
to fulfil the various functions of the system. In each direction, the length L of trunking length or
ducting length coming out of the functional area associated with the function of the system is as
long as the width W of the trunking length or ducting length, or 500 mm, whichever is the greater.
The tolerance of L is ± 25 mm.
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device or a junction as shown in Figure 106.
The samples are mounted on a horizontal rigid smooth support such as a plywood board 16 mm
thick, with a 50 mm minimum spacing between the assembly and the edge of the support.
NOTE 2 For flushfloor CTS/CDS additional provision may be included, if necessary, to simulate the influence of the floor
material on the side of the product.
NOTE 3 Other system components may be included, if necessary, to prevent movements. These system components are the
system components to terminate the trunking length or ducting length, if any. When there is no such system component, a system
component chosen by the manufacturer is used.
Examples for arrangement are shown in Figure 107.
Before the test non metallic system components and composite system components are aged at a
temperature declared according to Table 3 for (168 ± 4) h continuously.
The surface of the sample which can be exposed to traffic is loaded with the force declared
according to 6.102.
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A vertical force is applied through a steel cylinder of 13,3 mm ± 0,1 mm diameter with an edge
2
radius of 1 mm providing a contact surface of approximately 1 cm with a minimum length of
30 mm (Figure 108).
The cylinder is placed approximately in the middle of the length of the sample and in the most
unfavourable position in the width of the sample. In the case of multi-compartment CTS/CDS
whose partition(s) provide support, the middle of the largest compartment is selected.
To allow for settlement of the sample, a pre-load of 50 N ± 10 N is applied and then the
measurement apparatus is calibrated to zero.
The force is gradually increased up to the value declared according to 6.102 with a tolerance
(+ 4 %, 0) over 15 s ± 5 s and maintained for 60 s ± 1 s.
During the test the samples shall show no deflection greater th
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