CLC/TS 50658:2025

SLOVENSKI STANDARD
01-julij-2025
Sistemi za urejanje okablenja (CMS), ki zagotavljajo podporo kablov z notranjo
požarno odpornostjo
Cable management systems (CMS) providing support for cables with intrinsic fire
resistance
Führungssysteme für Kabel und Leitungen (CMS) zur Verlegung von Kabeln mit
intrinsischem Feuerwiderstand
Systèmes de câblage servant à soutenir les câbles à résistance intrinsèque au feu
Ta slovenski standard je istoveten z: CLC/TS 50658:2025
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
29.060.20 Kabli Cables
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC/TS 50658

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION May 2025
ICS 13.220.50; 29.060.20, 91.140.50
supersedes CLC/TR 50658:2022
English Version
Cable management systems (CMS) providing support for cables
with intrinsic fire resistance
Systèmes de câblage servant à soutenir les câbles à Führungssysteme für Kabel und Leitungen (CMS) zur
résistance intrinsèque au feu Verlegung von Kabeln mit intrinsischem Feuerwiderstand
This Technical Specification was approved by CENELEC on 2025-04-07.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50658:2025 E
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Fire resistance classification . 10
5 Documentation. 10
6 Rules for test . 11
6.1 Common rules . 11
6.2 CMS-support specific rules . 14
7 Test report . 41
Annex A (normative) Extended application of test results to other assemblies . 43
Annex B (informative) Examples for the calculation of the tensile stress in all vertically oriented

components . 46
Annex C (informative) Additional requirements for vertically running cable installations . 50
Bibliography . 53
Figures Page
Figure 1 — Typical circuit arrangement . 13
Figure 2 — Positioning of thermocouples . 13
Figure 3 — Test arrangement for cable tray system, mesh cable tray system and cable ladder system
Figure 4 — Trapeze system . 16
Figure 5 — Cantilever system with additional support at or near the end of the cantilever bracket . 16
Figure 6 — Cantilever system without additional support and location of the pendants . 17
Figure 7 — Exit out of the furnace wall showing additional gaps and the location of mineral wool for
trapeze system (Figure 4) and cantilever system with additional support at or near the cantilever
bracket (Figure 5) . 17
Figure 8 — Exit out of the furnace wall showing additional gaps and the location of mineral wool for

cantilever system without additional support (Figure 6) . 18
Figure 9 — Point loads . 19
Figure 10 — Test arrangement for cable trunking system ceiling mounted . 22
Figure 11 — Examples for arrangements of installations from the ceiling . 23
Figure 12 — Test arrangement for cable trunking system wall mounted . 23
Figure 13 — Examples for arrangements of installations on the wall . 24
Figure 14 — Test arrangement for conduit system and cable ducting system ceiling mounted . 27
Figure 15 — Examples for arrangements of installations from the ceiling . 27
Figure 16 — Test arrangement for cable ducting system and conduit system wall mounted . 28
Figure 17 — Examples for arrangements of installations on the wall . 28
Figure 18 — Test arrangement for cable cleats below a ceiling . 31
Figure 19 — Typical arrangement for loading a ceiling mounted cleat with mandrels . 32
Figure 20 — Test arrangement for cable cleats designed for use with cable tray lengths, mesh cable

tray lengths, cable ladder lengths and cable trunking lengths below a ceiling . 33
Figure 21 — Typical arrangements for loading a ceiling mounted cable cleat designed for use with
cable tray lengths, mesh cable tray lengths, cable ladder lengths and cable trunking lengths . 34
Figure 22 — Test arrangement for cable cleats on a wall . 35
Figure 23 — Typical arrangement for loading a wall mounted cleat with mandrels. 36
Figure 24 — Test arrangement for cable cleats designed for use with cable tray length, mesh cable
tray length, cable ladder length and cable trunking length on a wall . 37
Figure 25 — Typical arrangements for a wall mounted cable cleat designed for use with cable tray
lengths, mesh cable tray lengths, cable ladder lengths and cable trunking lengths . 38
Figure 26 — Horizontal or inclined ceilings . 40
Figure 27 — Horizontally running fire resistant installations on vertical or inclined wall . 40
Figure 28 — Vertically running fire resistant installations on vertical or inclined walls . 41
Figure A.1 — Examples A to G for assemblies of cable tray system, mesh cable tray system and cable

ladder system supported by pendant and cantilever bracket . 43
Figure A.2 — Examples A to G for assemblies of cable trunking system supported by pendant only . 44
Figure A.3 — Examples A to G for assemblies of cable trunking system supported by pendant and
cantilever bracket . 44
Figure A.4 — Examples A to G for assemblies of cable ducting system and conduit system supported

by pendant only . 45
Figure A.5 — Examples A to G for assemblies of cable ducting system and conduit system supported
by pendant and cantilever bracket . 45
Figure B.1 — Examples A to G for assemblies of cable tray system, mesh cable tray system and cable
ladder system supported by pendant, cantilever bracket, and additional support . 46
Figure C.1 — Example for effective support methods . 51
Figure C.2 — Example for effective support methods . 52

Tables Page
Table 1 — Fire resistance classifications for CMS providing support . 10
Table 2 — Minimum test duration . 11
Table 3 — Minimum number of point loads per span . 19
Table 4 — Limiting stress values . 20
Table 5 — Extended applications of test arrangements according to Figures 11 and 13 . 25
Table A.1 — Results for extending the test results to other assemblies according to examples in
Figures A.1 to A.5 . 45

European foreword
This document (CLC/TS 50658:2025) has been prepared by CLC/TC 213 “Cable management systems”.
This document supersedes CLC/TR 50658:2022.
— New figures have been added;
— In the ‘CMS-support classification’ column, the abbreviations P 15 to P 120 have been changed to Pcms
15 - Pcms 120;
— In the ‘Classification of cables with intrinsic fire resistance which can be supported’ column, the
abbreviations P 15 to P 120 have been changed to Pca 15 - Pca 120;
— The abbreviations P changed to Pcms and Pca;
— New Annex C added.
According to the present status of EN 13501-3, the P classifications listed in Table 1 and Table 2 as well as in
the rest of the text are exclusively assigned to fire protection systems for cable systems and associated
components in accordance with EN 1366-11. Furthermore, EN 13501-3 specifies the following classes for
unprotected electrical cables and wires with their own fire protection properties:
— Pca for cables in accordance with EN 50577, EN 50582 and EN 50289-4-16;
— PHca for cables with small diameters in accordance with EN 50200, EN 50582 and EN 50289-4-16.
To clearly differentiate between the classification in EN 13501-3, the class Pcms is used in this document.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
Introduction
The purpose of the test detailed in this document is to evaluate the ability of a Cable Management System
(CMS) to support cables with intrinsic fire resistance enabling them to maintain their function for a specified time
period whilst exposed to fire. The test is conducted under conditions of a standard time/temperature curve when
the CMS is installed in a standardized representative condition.
This document for cable management products is used for electrotechnical 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 2014/35/EU through consideration of the essential requirements of this Directive.
This document is supported by separate standards to which references are made.
1 Scope
This document specifies test methods for cable management systems (CMS) intended to provide support for
intrinsic fire-resistant cables in order to determine their abilities to maintain the function of electrical power cables
and signal/control cables for a specified duration when subjected to fire under defined conditions.
This document establishes a non-hierarchical classification for this ability.
Additional devices to fix the cable management systems providing fire resistant support (CMS-support) to the
building structure for example screws, anchors etc. are not covered by this document.
CMS intended to provide support and fire protection for cables are tested according to EN 1366-11.
This document does not apply to powertrack systems.
NOTE Rules for testing CMS-support for fibre optic cables according to EN 50582 and communication cables according
to EN 50289-4-16 are under consideration.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references, the
latest edition of the referenced document (including any amendments) applies.
EN 1363-1, Fire resistance tests - Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
3.1
cable management system
CMS
assembly including different system components intended for the accommodation of insulated conductors,
cables and other electrical equipment in electrical and/or communication systems
Note 1 to entry: Examples of CMS or CMS products are cable tray systems, mesh cable tray systems, cable ladder
systems, cable trunking systems, conduit systems, cable ducting systems, cable cleats, cable ties.
3.2
cable management systems providing fire resistant support
CMS-support
cable management system providing support for cables with intrinsic fire resistance to maintain their function
for a specified time period under defined test conditions
Note 1 to entry: Support of the cables may be provided for example by suitable cable tray systems, mesh cable tray
systems, cable ladder systems, cable trunking systems, conduit systems, cable ducting systems, cable cleats, cable ties.
3.3
product type
group of system components of similar design with limited variations
Note 1 to entry: Cable tray lengths and fittings, mesh cable tray lengths and fittings and cable ladder lengths and fittings -
variation in width and/or variation in perforation of the base area of the tested product but not more than ± 5 % (e.g. if the
tested product has a perforation of 15 % the group has to be between 10 % and 20 %).
Note 2 to entry: Cable trunking lengths and fittings - variation in width.
Note 3 to entry: Cable ducting lengths and fittings - variation in width.
Note 4 to entry: Conduit lengths and fittings - variation in diameter and/or variation in material thickness but not more
than ± 20 %.
Note 5 to entry: Cable cleats (cable fixing) - variation in diameter (where a cable cleat does not have a circular opening
this allowance may be applied to the cable diameter) and/or variation in width but not more than ± 20 % and/or variation in
material thickness but not more than ± 20 %.
Note 6 to entry: Support device - cantilever brackets and centrally supported cantilever brackets having the same declared
load capacity, based on testing at ambient temperature in accordance with EN 61537, can vary in material thickness, length,
and height.
Note 7 to entry: Support device - C-shaped ceiling supports having the same declared load capacity, based on testing at
ambient temperature in accordance with EN 61537, can vary in material thickness, width, and height.
Note 8 to entry: Support device - Pendant - variation in length.
Note 9 to entry: Support device - Trapeze support - variation in width.
3.4
system component
part of the system according to its product standard
3.5
cable tray length
system component used for cable support consisting of a base with integrated side members or a base
connected to side members
[SOURCE: EN 61537:2007, 3.3]
3.6
cable ladder length
system component used for cable support consisting of supporting side members, fixed to each other by means
of rungs
[SOURCE: EN 61537:2007, 3.4]
3.7
mesh cable tray length
system component used for cable support consisting of a base with integrated side members made of wires
3.8
fitting
system component used to connect, change direction, change dimension, or terminate cable tray lengths, mesh
cable tray lengths, cable ladder lengths, trunking lengths or ducting lengths
[SOURCE: EN 61537:2007, 3.5 modified]
3.9
cable runway
assembly comprised of cable tray lengths, cable ladder lengths or mesh cable tray lengths and fittings only
[SOURCE: EN 61537:2007, 3.6 modified]
3.10
trunking length
main component of a cable trunking system comprising a base with one or more access covers which may be
opened or removed
[SOURCE: EN 50085-1:2005, 3.4]
3.11
cable trunking system
CTS
assembly comprising a trunking length and other system components to provide an enclosure for the
accommodation and laying in of insulated conductors and cables and possibly the accommodation of other
electrical equipment
[SOURCE: EN 50085-1:2005, 3.1]
3.12
pendant
vertical suspension device
3.13
cantilever bracket
horizontal supporting device fixed to the wall or to a pendant providing mechanical support
3.14
cantilever system
assembly comprising a pendant and a cantilever bracket
3.15
trapeze support
horizontal supporting device supported by two or more pendants
3.16
trapeze system
assembly comprising pendants and a trapeze support
3.17
cable cleat
device provided with a means of attachment to a mounting surface and that provides securing of cables when
installed at intervals along the length of cables
Note 1 to entry: Examples of mounting surfaces that may be specified are cable tray systems, mesh cable tray systems,
cable ladder systems, cable trunking systems, struts, or rails (see EN IEC 61914:2021, Figure A.8).
Note 2 to entry: For some examples of cable cleats see EN IEC 61914:2021, Figure A.1 to Figure A.10. These examples
do not limit the use of other cable cleat designs that conform to the requirements of EN IEC 61914.
[SOURCE: EN IEC 61914:2021, 3.1, modified — the wording of Notes 1 and 2 to entry have been adapted]
3.18
cable with intrinsic fire resistance
electric cable designed to continue to operate in a designated manner whilst subjected to a specific source of
heat for a specified period of time under specified conditions
[SOURCE: EN 50577:2015, 3.3]
4 Fire resistance classification
This classification applies to CMS as described in its product standard and does not apply to additional devices
to fix the CMS to the building structure for example screws, anchors etc.
CMS providing fire resistant support are classified with one or more of the following classifications listed in
Table 1:
Table 1 — Fire resistance classifications for CMS providing support
CMS-support classification Classification of cables
with intrinsic fire
resistance which can be
supported
Pcms 15 Pca 15
Pcms 30 Pca 30
Pcms 60 Pca 60
Pcms 90 Pca 90
Pcms 120 Pca 120
The CMS-support classification obtained by this test is non-hierarchical. For example, a CMS-support classified
Pcms 60 is not for use with Pca 15 and Pca 30 cables unless it is also tested and classified with these specific
cables.
5 Documentation
The documentation of the manufacturer of the CMS should include all information necessary for the proper and
safe installation and use related to the classification according to Clause 4. The information should include:
• Reference to the classification of the CMS-support in accordance with Clause 4:
• where a full test pass has been recorded, or, where a partial test pass has been recorded (see 6.1.4),
reference to the classification of the CMS-support in accordance with Clause 4,
• details of the cables that passed the test, and a statement that the classification is only applicable for
the specific cable(s) that passed the test;
• The voltage(s) used in the test;
• Mounting and installation instructions for use of the CMS under fire conditions;
NOTE Instructions might include sketches, figures, etc.
• Maximum distances between fixing points or supports for use under fire conditions;
• The grade (yield strength) of all materials of which the CMS-support is manufactured;
• Maximum mechanical load of cables for use under fire conditions;
• Advice to the installer that the CMS-support is to be fixed to the building structure in a way appropriate for
fire conditions;
• A recommendation to the installer to mark the finished installation with a label indicating the fire resistance
classification of the CMS-support, the year of installation, the name and address of the responsible installer
and the reference of a document establishing the resistance to fire of the CMS-support according to this
document.
NOTE Marking of the finished installation is a requirement in some countries.
6 Rules for test
6.1 Common rules
6.1.1 General
The following common rules apply to all tests according to this document:
• All components of the CMS tested according to this document shall be compliant with its product standard.
• A CMS providing fire resistant support (CMS-support) classified according to Table 1 is compliant with the
relevant test according to Clause 6.
• The CMS Classification can only be reached by using Pca classified cables of the same classification.
• Tests according to this document are type tests.
• The tests shall be carried out in accordance with EN 1363-1 in order to establish the classification according
to Table 1. The minimum test duration is defined in Table 2:
Table 2 — Minimum test duration
CMS-support classification Minimum test duration
(minutes)
Pcms 15 15
Pcms 30 30
Pcms 60 60
Pcms 90 90
Pcms 120 120
• A CMS is tested with Pca-classified cables.
NOTE The fire resistance of a Pca-classified cable is tested in accordance with the relevant standard selected
from the following list:
•  EN 50577, Electric cables - Fire resistance test for unprotected electric cables (Pca classification);
•  EN 50582, Procedure to assess the circuit integrity of optical fibres in a cable under resistance to fire testing;
•  EN 50289-4-16, Communication cables - Specifications for test methods – Part 4-16: Environmental test methods -
Circuit integrity under fire conditions.
6.1.2 Furnace
The construction of the furnace is such that it:
• is capable of accommodating the relevant test arrangement defined in 6.2.1 to 6.2.5;
• allows for the positioning of the sample to be at least 500 mm away from the centreline of the burners;
• is capable of producing the temperature and pressure conditions according to EN 1363-1 for at least
120 minutes.
The furnace walls and ceilings constructed for the purpose of this test are left to dry in ambient conditions for at
least 16 h prior to the test.
6.1.3 General arrangement for testing a CMS providing support for cables with intrinsic fire
resistance
For checking the continuity and integrity of the electrical circuit, a three-phase transformer of sufficient capacity
to maintain the required test current is connected to all of the conductors under test as shown in Figure 1 (Typical
circuit arrangement).
Each CMS-support classification declared according to Table 1 is tested using a relevant set of Pca-classified
cables. Each set consists of six Pca-classified cables of the same classification. The cables are taken from three
different manufacturers with two cables of the same type from each manufacturer.
The set of Pca-classified cables consists of the following cable types:
• Pca-classified cables with an operating voltage of 230/400 V AC are represented by either 4 × 1,5 mm or
5 × 1,5 mm conductors, and/or
• Pca-classified cables with a lower operating voltage are represented by either two pairs or four conductors
with the smallest conductor size in the family.
Indicating devices such as lamps or LEDs are used to determine the interruption of circuit continuity in the
conductors.
NOTE Figure 1 shows the connections for one cable.
The test is carried out with an operating voltage of 230/400 V AC and/or 110/190 V AC and/or the rated voltage
of the cable used for the test.
The test result is only valid for applications with an operating voltage equal to or lower than the operating voltage
used in the test.
The indicating devices are chosen to achieve a test current of approximately 0,25 A through each conductor.
Fuses used in the test procedure are 2 A Type DII complying with HD 60269-3. Alternatively, a circuit breaker
may be used. Where a circuit breaker is used, it has equivalent characteristics to the fuse in accordance with
Annex C of EN 50200:2015.
Key
L1, L2, L3 phase conductors (L2, L3 if present)
N neutral conductor (if present)
PE protective earth (if present)
1 transformer
2 fuse (2 A)
3 connection to phase L1 (or L2 or L3)
4 test conductor or group
5 load and indicating device (e.g. lamp)
6 cable
7 metal screen (if present)
8 cable management system
Figure 1 — Typical circuit arrangement
The temperature inside the furnace is measured by using thermocouples of the type specified in EN 1363-1 and
is arranged inside the furnace as shown in Figure 2.
Dimensions in mm
Key
1 thermocouple
S distance between equally spaced thermocouples
0 width of the opening
Figure 2 — Positioning of thermocouples
6.1.4 Test result
The sample passes the test if, taking into account the duration of the claimed classification, all of the following
conditions are fulfilled:
• At least 5 of the 6 cables are still functioning at the end of the duration of the claimed classification, and
th
• the 6 cable was functioning for at least 80 % of the duration of the claimed classification.
When the above conditions are fulfilled, the CMS-support can be classified according to Table 1 to support
cables with intrinsic fire resistance for any cable manufacturer.
If only both cables from one or two manufacturers are still functioning after the specified time period, the CMS-
support can be classified according to Table 1 to support cables with intrinsic fire resistance only for the cable(s)
that passed the test.
6.2 CMS-support specific rules
6.2.1 Test for cable tray systems, mesh cable tray systems and cable ladder systems
6.2.1.1 General
Cable tray systems, mesh cable tray systems and cable ladder systems classified according to Table 1 are
tested in accordance with 6.2.1.2.
The test is carried out with the maximum:
• width of cable tray length and fitting, mesh cable tray length and fitting or cable ladder length and fitting,
• length of pendant,
• length of cantilever bracket,
• width of trapeze support,
as declared by the manufacturer.
NOTE To decide which test arrangement should be used in the test, see Annex A.
The test arrangement is assembled and installed according to the manufacturer's instructions. Different jointing
methods or different jointing positions constitute different product types. Metallic cable tray systems, mesh cable
tray systems and cable ladder systems are connected to earth. Wall mounted cantilever brackets used in the
test shall be mounted direct to the furnace walls or to a rigid support construction simulating wall mounting
conditions. Cantilever brackets which are suitable for wall and pendant mounting need only be tested in the
pendant arrangement.
The cable is installed side by side in one layer uniformly distributed with the minimum bending radius as declared
by the cable manufacturer allowing a tolerance of +10 %. If a single cable tray, mesh cable tray or cable ladder
does not have enough space to accommodate all six cables, an additional identical cable tray, mesh cable tray
or cable ladder is used in the test arrangement.
6.2.1.2 Test requirements
The test arrangement comprises of a minimum length of the sample of 2,8 m with a minimum of two spans. All
spans are equal. The cable tray, mesh cable tray or cable ladder has a joint in a mid-span position of one of the
lengths and one 90° bend representing any kind of fitting in the same horizontal plane as the lengths (see
Figure 3).
NOTE 1 The 90° bend can be built using two 45° bends.
The test arrangement including cantilever brackets, trapeze supports, and pendants as shown in Figures 4, 5
and 6 are installed in the furnace in accordance with the manufacturer's instructions. Additional support for
fittings is permitted when specified in the manufacturer’s instructions and is described in the test report. The
distance “X” (see Figure 3) is stated in the test report and in the manufacturer’s instructions. All connections of
the 90° bend are inside the furnace. The location of pendants of cantilever system without additional support as
shown in Figure 6 are on the same side of the sample.
NOTE 2 If it is not possible to fix, for example, cantilever brackets to the sidewalls of the furnace, false wall or steel
constructions can be placed inside the furnace directly in contact with the side walls.
Dimensions in millimetres
Key
1 cable tray length/ mesh cable tray length/ cable ladder length
2 90° bend or two 45° bends
3 joint
a, b, c support positions
d additional support for the 90° bend or the two 45° bends if required by the manufacturer’s instructions
L distance between supports
R inside radius
X distance between support position and joint of the fitting
W width of the cable tray / mesh cable tray / cable ladder
Figure 3 — Test arrangement for cable tray system, mesh cable tray system and cable ladder system
Dimensions in millimetres
Key
1 trapeze support
2 pendant (threaded rod, profile or similar)
Figure 4 — Trapeze system
Dimensions in millimetres
Key
1 cantilever bracket
2 pendant ()
3 additional support (threaded rod, profile or similar)
Figure 5 — Cantilever system with additional support at or near the end of the cantilever bracket
Dimensions in millimetres
Key
1 cantilever bracket
2 pendant
Figure 6 — Cantilever system without additional support and location of the pendants
The furnace is provided with two openings allowing the sample to enter and exit the furnace. The openings
provide a clearance as shown in Figure 7 and 8 around the sample. The openings in the furnace are filled with
high density (95 ± 20) kg/m mineral wool insulation material and any remaining gaps are filled with lower
density (45 ± 10) kg/m mineral wool insulation material.
To prevent the test sample from moving into the furnace during the test a fixing device (e.g. right angled brackets
as shown in Figure 7 and 8 or Profile) is fixed to the sample which protrudes outside of the furnace but not fixed
to walls of the furnace in order to allow expansion of the sample.
Dimensions in millimetres
Key
1 opening in the furnace
2 fixing device (right angled brackets)
3 cable tray, mesh cable tray or cable ladder
4 lower density mineral wool
5 high density mineral wool
Figure 7 — Exit out of the furnace wall showing additional gaps and the location of mineral wool for
trapeze system (Figure 4) and cantilever system with additional support at or near the cantilever
bracket (Figure 5)
Dimensions in millimetres
Key
1 opening in the furnace
2 fixing device (right angled brackets)
3 cable tray, mesh cable tray or cable ladder
4 lower density mineral wool
5 high density mineral wool
Figure 8 — Exit out of the furnace wall showing additional gaps and the location of mineral wool for
cantilever system without additional support (Figure 6)
Unless required by manufacturer’s instructions of the CMS-support, the cables are not fixed to the cable tray,
mesh cable tray or cable ladder. For the positioning of the cables, cable ties made from plastic materials may
be used and may be removed before testing.
The load declared by the manufacturer (the sum of the P classified cables used for the test plus additional
CA
load) is applied to the sample for the duration of the test. The application of the additional load is by means of
suspending steel chains and/or plates outside of the sample as shown in Figure 9 in such a way that the
additional load does not limit the deflection of the sample. The load remains applied, and the load application
positions remain in the same area during the test.
The distance d between the outer edge and the additional load application position is 1 % to 20 % of the width
of the CMS-support with a maximum of 50 mm.
The additional loads should be applied to the sample as point loads as shown in Figure 9.
Figure 9 — Point loads
Table 3 — Minimum number of point loads per span
Span - L Minimum number “n”
m of point loads per span
L ≤ 2,0 5
2,0 < L ≤ 2,5 6
2,5 < L ≤ 3,0 7
3,0 < L ≤ 3,5 8
Additional loads are suspended and are uniformly distributed along the length of each span according to Table 3
using steel wire to fix them. The additional loads are applied in such a way that they do not interfere with lower
samples in the furnace.
For cable tray, the additional loads are attached to the existing bottom holes if any, close to both side members.
If there are no holes, holes should be drilled near both side members.
For mesh cable tray, the additional loads are attached to the wires close to both side members.
For cable ladder the additional loads are attached to the rungs close to both side members.
The method of attaching the additional loads is such that it does not limit the deflection of the sample.
The temperature inside the furnace is measured by using thermocouples of the type specified in EN 1363-1 and
are arranged inside the furnace as shown in the Figure 2.
Electrical power is applied to the transformer and the indicating devices are checked to confirm that the cables
have electrical continuity. The test is then carried out in accordance with EN 1363-1 in order to achieve a
particular classification according to Table 1.
6.2.1.3 Extended application
Test results of cable tray systems, mesh cable tray systems and cable ladder systems installed horizontally are
also valid for diagonally installed cable tray systems, mesh cable tray systems and cable ladder systems if all
of the following requirements are fulfilled:
• The inclination of the diagonal section does not exceed 45° from the horizontal;
• Distance between support and the end of the horizontal cable tray lengths, mesh cable tray lengths or cable
ladder lengths does not exceed the distance X (see Figure 3);
• For diagonally running cable tray lengths, mesh cable tray lengths or cable ladder lengths with a length
exceeding 0,7 times the tested support distance, additional supports are required.
For vertically running cable tray systems, mesh cable tray systems and cable ladder systems, extended
application of 6.2.4.4 applies.
A positive test result for a cable tray system, mesh cable tray system or cable ladder system with a cantilever
bracket fixed to a pendant also applies to a cantilever bracket fixed directly to a wall, provided the cantilever
bracket is suitable for direct wall mounting.
The tested number of cable runways according to Figure 4 and 5 can be extended and need not be tested
provided the stress in the pendant/additional support does not exceed the values in Table 4. Some examples
according to Figure 5 are given in Annex B (informative).
Pendants according to Figure 4, 5 and 6 with a welded head plate can be substituted by a bolded head plate or
vice versa provided the stress in the pendant/additional support does not exceed the values in Table 4.
Table 4 — Limiting stress values
Type of load Maximum stress
N/mm
Pcms 15, Pcms 30 and
Classification according to Table 1 Pcms 90 and Pcms 120
Pcms 60
Tensile stress in all vertically
9 6
orientated components
Shearing stress in screws of
property class 4.6 according to 15 10
EN ISO 898-1:2013
Extended application of test results to other assemblies of CMS-support according to Figure 6 is given in
Annex A.
A positive test result for a cable tray system, mesh cable tray system or cable ladder system is also applicable
when the conditions deviate from the tested conditions for one or more of the following rules:
• shorter span;
• lower load;
• cable tray systems, mesh cable tray systems or cable ladder systems of the same product type that have
narrower width;
• pendant with shorter or longer length for support systems according to Figure 4 and 5 and pendant with
shorter length for support system according to Figure 6;
• cantilever bracket with shorter length;
• system components of the same product type made of another material from similar structure, provided
that, when temperature increases up to the maximum test temperature, its yield strength remains equal or
higher than the yield strength of the tested material at the same temperature;
NOTE Material from similar structure includes, for example, from one steel to another steel but excludes from
aluminium alloy to steel.
• different galvanized finishing or different paint finishing;
• when fixing devices are used between the ceiling and suspension means, direct suspension from the ceiling
is also permitted;
• the addition of a divider.
Application of the test results can be extended to cable tray lengths and fittings, mesh cable tray lengths and
fittings or cable ladder lengths and fittings which only deviate from the tested one in a higher material thickness.
In this case the load on the support (weight of the CMS length plus cable weight) should not exceed the tested
load on the support.
The test result for a cable tray system, mesh cable tray system or cable ladder system is not applicable when
the conditions deviate from the tested conditions for one or more of the following rules:
• addition or removal of a cover;
• removal of a divider;
• additional parts in the suspension of the CMS-support from the ceiling;
• removal of a support.
A CMS with Pcms classification according to Table 1 for a given duration is deemed to be able to support PHca
classified cables for the same duration as long as the temperature does not exceed the temperature conditions
of EN 50200.
6.2.2 Test for cable trunking systems
6.2.2.1 General
Cable trunking systems classified according to Table 1 are tested in accordance with 6.2.2.2. The test is carried
out with the maximum width of cable trunking length and fitting as declared by the manufacturer.
If the test is carried out with a support system, the test is carried out with the maximum:
• length of pendant,
• length of cantilever bracket,
• length of trapeze support,
as declared by the manufacturer.
The test arrangement is assembled and installed according to the manufacturer's instructions. Different jointing
methods or different jointing positions constitute different product types. Metallic cable trunking systems are
connected to earth.
Wall mounted cantilever brackets used in the test shall be mounted direct to the furnace walls or to a rigid
support construction simulating wall mounting conditions. Cantilever brackets which are suitable for wall and
pendant mounting need only be tested in the pendant arrangement.
The cable is installed side by side in one layer uniformly distributed with the minimum bending radius in normal
use as declared by the cable manufacturer allowing a tolerance of +10 %. If the cable trunking does not have
enough space to accommodate all six cables an additional identical cable trunking is used in the test
arrangement.
NOTE To decide which test arrangement should be used in the test, see Annex A.
6.2.2.2 Test requirements
The test arrangement comprises of a minimum length of the sample of 2,8 m with a minimum of two spans. All
spans are equal. The cable trunking system has a joint in a mid-span po
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