Powertrack systems - Part 22: Particular requirements for powertrack systems intended for onfloor or underfloor installation

IEC 61534-22:2014 specifies the particular requirements and tests for PT systems intended for mounting on, or under the floor level and floor service units which are mounted on the floor, under the floor or flush with the floor. This second edition cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Clauses 18 to 22 have been adapted to IEC 61534-1:2011 and include short-circuit test requirements;
- addition of a new (500 N) classification for the resistance to traffic load applied to small surface areas on a flushfloor service unit;
- addition of a new classification for the non-automatic closing of the lid on flushfloor service units and appropriate tests;
- addition of tests for floor service units declared for use when a floor is wet treated.
This publication is to be read in conjunction with IEC 61534-1:2011.

Systèmes de conducteurs préfabriqués - Partie 22: Exigences particulières pour les systèmes de conducteurs préfabriqués destinés au montage sur le sol ou sous le sol

L'IEC 61534-22:2014 spécifie les exigences particulières et les essais des systèmes de conducteurs préfabriqués destinés au montage sur ou sous le sol et aux unités de service au sol qui sont montées sur le sol, sous le sol ou encastrées dans le sol. Cette deuxième édition annule et remplace la première édition parue en 2009. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- les Articles 18 à 22 ont été adaptés par rapport à l'IEC 61534-1:2011 et comprennent des exigences d'essai de court-circuit;
- ajout d'une nouvelle classification (500 N) pour la résistance à une charge de passage appliquée au travers d'une zone de petite surface sur une unité de service pour montage encastré dans le sol;
- ajout d'une nouvelle classification pour la fermeture non automatique du couvercle sur les unités de service pour montage encastré dans le sol et des essais appropriés;
- ajout d'essais pour les unités de service au sol déclarées appropriées pour un usage en cas de sol soumis à un traitement humide. 61534-21
This publication is to be read in conjunction with IEC 61534-1:2011.
Cette publication doit être lue conjointement avec l'IEC 61534-1:2011.

General Information

Status
Published
Publication Date
18-Jun-2014
Current Stage
PPUB - Publication issued
Start Date
19-Jun-2014
Completion Date
19-Jun-2014
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IEC 61534-22
Edition 2.0 2014-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Powertrack systems –
Part 22: Particular requirements for powertrack systems intended for onfloor or
underfloor installation
Systèmes de conducteurs préfabriqués –
Partie 22: Exigences particulières pour les systèmes de conducteurs
préfabriqués destinés au montage sur le sol ou sous le sol
IEC 61534-22:2014-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61534-22
Edition 2.0 2014-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Powertrack systems –
Part 22: Particular requirements for powertrack systems intended for onfloor or
underfloor installation
Systèmes de conducteurs préfabriqués –
Partie 22: Exigences particulières pour les systèmes de conducteurs
préfabriqués destinés au montage sur le sol ou sous le sol
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 29.060.10, 29.120.20 ISBN 978-2-8322-1656-9

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61534-22:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

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

3 Terms and definitions ...................................................................................................... 5

4 General requirements ...................................................................................................... 6

5 General notes on tests .................................................................................................... 6

6 Ratings ............................................................................................................................ 6

7 Classification ................................................................................................................... 6

8 Marking and documentation ............................................................................................. 7

9 Construction .................................................................................................................... 8

10 Clearances, creepage distances and solid insulation ....................................................... 9

11 Protection against electric shock ..................................................................................... 9

12 Terminals and terminations .............................................................................................. 9

13 Screws, current-carrying parts and connections ............................................................... 9

14 Mechanical strength ........................................................................................................ 9

15 Insulation resistance test and dielectric strength test ..................................................... 17

16 Normal operation ........................................................................................................... 17

17 Temperature rise ........................................................................................................... 17

18 Short-circuit protection and short-circuit withstand strength ........................................... 17

19 Resistance to heat ......................................................................................................... 17

20 Fire hazard .................................................................................................................... 17

21 External influences ........................................................................................................ 18

22 Electromagnetic compatibility ........................................................................................ 18

Annex AA (informative) Illustrations of underfloor and onfloor installations........................... 19

Annex BB (normative) Additional test requirements for PT systems already complying

with IEC 61534-22: 2009 ....................................................................................................... 21

Figure 101 – External load test ............................................................................................. 10

Figure 102 – Traffic load test for flushfloor service units applied to a small surface

area 13

Figure 103 – Traffic load test for flushfloor service units applied to a large surface

area 15
Figure 104 – Test arrangement for fixing apparatus mounting device according to

14.101.6.1 ............................................................................................................................ 16

Figure AA.1 – Illustrations of underfloor installations ............................................................. 19

Figure AA.2 – Example of installation onfloor ........................................................................ 20

---------------------- Page: 4 ----------------------
IEC 61534-22:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWERTRACK SYSTEMS –
Part 22: Particular requirements for powertrack
systems intended for onfloor or underfloor installation
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61534-22 has been prepared by subcommittee 23A: Cable
management systems, of IEC Technical Committee 23: Electrical accessories.

This second edition cancels and replaces the first edition published in 2009. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

• Clauses 18 to 22 have been adapted to IEC 61534-1:2011 and include short-circuit test

requirements;

• addition of a new (500 N) classification for the resistance to traffic load applied to small

surface areas on a flushfloor service unit;
---------------------- Page: 5 ----------------------
– 4 – IEC 61534-22:2014 © IEC 2014

• addition of a new classification for the non-automatic closing of the lid on flushfloor service

units and appropriate tests;

• addition of tests for floor service units declared for use when a floor is wet-treated.

The text of this standard is based on the following documents:
FDIS Report on voting
23A/702/FDIS 23A/708/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

This standard is to be used in conjunction with IEC 61534-1:2011, Powertrack systems –

Part 1: General requirements.

This Part 22 supplements or modifies the corresponding clauses of IEC 61534-1. Where a

particular clause or subclause of IEC 61534-1:2011 is not mentioned in this Part 22, that

clause or subclause applies as far as is reasonable. Where this Part 22 states "addition" or

"replacement", the relevant text of IEC 61534-1:2011 is to be adapted accordingly.

Subclauses, tables and figures which are in addition to those in IEC 61534-1:2011 are

numbered starting with 101.

A list of all parts of IEC 61534 series, published under the general title Powertrack systems,

can be found on the IEC website.
The following differences exist in the countries indicated below:
Subclause 7.105.2: In the United Kingdom, this classification is not permitted.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 61534-22:2014 © IEC 2014 – 5 –
POWERTRACK SYSTEMS –
Part 22: Particular requirements for powertrack
systems intended for onfloor or underfloor installation
1 Scope

Clause 1 of IEC 61534-1:2011 and IEC 61534-1:2011/AMD1:2014 is applicable except as

follows:
1.1 Addition:

This part of IEC 61534 specifies the particular requirements and tests for PT systems

intended for mounting on, or under the floor level and floor service units which are mounted

on the floor, under the floor or flush with the floor.
NOTE 1 Types and applications are shown in Figures AA.1a, AA.1b and AA.2

NOTE 2 Flushfloor PT systems, with the exception of flushfloor service units, are not covered by this standard.

2 Normative references
Clause 2 of IEC 61534-1:2011 is applicable except as follows:
Addition:
IEC 61534-1:2011, Powertrack systems – Part 1: General requirements
IEC 61534-1:2011/AMD1:2014
3 Terms and definitions

Clause 3 of IEC 61534-1:2011 and IEC 61534-1:2011/AMD1:2014 is applicable except as

follows:
Additional terms and definitions:
3.101
underfloor PT system

PT system whose components, except flushfloor service units, are intended for installation

beneath the finished floor and in normal use are not exposed to traffic loads
Examples are shown in Figures AA.1a and AA.1b
3.102
onfloor PT system
PT system whose components are mounted on the floor surface
An example is shown in Figure AA.2.
---------------------- Page: 7 ----------------------
– 6 – IEC 61534-22:2014 © IEC 2014
3.103
finished floor

floor which carries the traffic load and which may be made of concrete, wood, or the like and

which may or may not be completed with floor covering material such as carpet, tile, paint,

parquet or similar means
3.104
apparatus mounting device

system component to accommodate electrical apparatus, for example switches, socket-

outlets, circuit-breakers
3.105
floor service unit

system component used with a floor system and intended to accommodate one or more

electrical apparatus such as switches, socket-outlets, circuit-breakers either directly or by use

of mounting devices
3.106
flushfloor service unit

floor service unit that is flush with the finished floor when the unit is not in use’

3.107
in-use floor service unit

floor service unit which has cables and/or cords connected to external electrical appliances

3.108
not in-use floor service unit

floor service unit which has no cables and/or cords connected to external electrical appliances

4 General requirements
Clause 4 of IEC 61534-1:2011 is applicable.
5 General notes on tests
Clause 5 of IEC 61534-1:2011 is applicable.
6 Ratings
Clause 6 of IEC 61534-1:2011 is applicable.
7 Classification
Clause 7 of IEC 61534-1:2011 is applicable except as follows:
Replacement:
7.1 According to resistance to impact for installation and application
7.1.1 PT system for 5 J impact
7.1.2 PT system for 20 J impact
Additional subclauses:
---------------------- Page: 8 ----------------------
IEC 61534-22:2014 © IEC 2014 – 7 –
7.101 According to floor treatment
7.101.1 Dry-treatment of floor
7.101.2 Wet-treatment of floor for not in-use floor service unit
7.101.3 Wet-treatment of floor for in-use floor service unit
7.102 According to the intended location
7.102.1 Underfloor PT system
7.102.2 Onfloor PT system
7.103 According to resistance to traffic load applied to small surface area on a
flushfloor service unit
7.103.1 500 N
7.103.2 750 N
7.103.3 1 000 N
7.103.4 1 500 N
7.103.5 2 000 N
7.103.6 2 500 N
7.103.7 3 000 N

7.104 Optional classification according to resistance to traffic load applied to large

surface area on a flushfloor service unit
7.104.1 2 000 N
7.104.2 3 000 N
7.104.3 5 000 N
7.104.4 10 000 N
7.104.5 15 000 N
7.105 According to the type of lid used on flushfloor service units
7.105.1 Automatic closing of the lid
7.105.2 Non-automatic closing of the lid
NOTE In the United Kingdom, classification 7.105.2 is not permitted.
8 Marking and documentation
Clause 8 of IEC 61534-1:2011 and IEC 61534-1:2011/AMD1:2014 is applicable.
---------------------- Page: 9 ----------------------
– 8 – IEC 61534-22:2014 © IEC 2014
9 Construction
Clause 9 of IEC 61534-1:2011 is applicable except as follows:
Additional subclauses:

9.101 Underfloor powertrack system components shall withstand external loads during

transport and installation but are not subjected to traffic loads in normal use.
Compliance is checked by the tests specified in 14.101.2.
9.102 Onfloor powertrack system components shall withstand external loads.
Compliance is checked by the tests specified in 14.101.3.

9.103 Flushfloor service units shall withstand traffic loads in accordance with 7.103 and

7.104.
Compliance is checked by the tests specified in 14.101.4.

9.104 Lids of flush floor service units shall be so designed that in normal use they cannot be

detached without an intentional action and also resist movement or unintentional opening

when subject to external load.

Compliance is checked by inspection and the test of 14.101.4 and 14.101.5 as appropriate.

Lids of flush floor service units declared according to 7.105.1 shall be so designed that in

normal use they will close automatically.
Compliance is checked by inspection and manual test.

9.105 Floor service units declared according to 7.101.2 and 7.101.3 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 21.2.3.101. For method 3, compliance is checked by inspection.

9.106 Flushfloor service units shall be so constructed that when installed with the lid closed

they shall not present a trip hazard. Any protrusion above the finished floor shall not be

greater than 4 mm, or 8 mm in the case of a chamfered step with an angle not exceeding 45º

with the horizontal surface. When the service unit is in use this requirement does not apply.

Compliance is checked by inspection.
---------------------- Page: 10 ----------------------
IEC 61534-22:2014 © IEC 2014 – 9 –
10 Clearances, creepage distances and solid insulation
Clause 10 of IEC 61534-1:2011 is applicable.
11 Protection against electric shock
Clause 11 of IEC 61534-1:2011 is applicable except as follows:
Additional subclause:

11.1.101 The minimum IP rating for powertrack system components accessible to ordinary

persons during normal use shall be IP 3XD. This requirement does not apply to accessories.

12 Terminals and terminations
Clause 12 of IEC 61534-1:2011 is applicable.
13 Screws, current-carrying parts and connections
Clause 13 of IEC 61534-1:2011 is applicable.
14 Mechanical strength
Clause 14 of IEC 61534-1:2011 is applicable except as follows:
14.2 Impact test
Delete 14.2.
Additional subclauses:
14.101 External mechanical load test
14.101.1 General

Underfloor and onfloor PT systems and PT flushfloor service units, shall have sufficient

mechanical strength against external mechanical loads likely to occur during normal use:

– underfloor PT system components by the test of 14.101.2;
– onfloor PT system components by the tests of 14.101.3;
– flushfloor service units by the test of 14.101.4 and 14.101.5 as appropriate.

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 to allow compliance of other parts.
14.101.2 Load test for underfloor powertrack system components
14.101.2.1 General

Powertrack (PT) systems including tap-off units shall have sufficient mechanical strength

against external loads likely to occur during installation and use.
---------------------- Page: 11 ----------------------
– 10 – IEC 61534-22:2014 © IEC 2014
14.101.2.2 Powertrack

The test shall be performed on a sample consisting of two lengths of powertrack each with a

minimum length of 0,5 m which are connected together with the necessary connectors and

with a supply connector at each end of the sample.

The sample is positioned on a horizontal rigid support. A steel cube of (50 ± 0,5) mm with an

edge radius of approximately 1 mm is placed centrally on the joint. In the case of multi-

compartment powertrack whose partition walls provide support, the middle of the largest

compartment is selected, see Figure 101.
L/2
b/2
d < b
IEC 2134/08
Key
b width of the largest compartment
d width of the smallest compartment
L length of sample
F applied vertical force
Figure 101 – External load test

A vertical force of (750 ± 10) N is gradually applied over (60 ± 1) s and maintained for a

further (120 ± 5) s centrally to the cube.
During the test, there shall be no deformation that impairs electrical safety.
In case of doubt, the sample shall conform to Clause 10 and 11.1.1.1.

After the test, the sample shall show no signs of damage, nor any cracks visible to normal or

corrected vision without additional magnification.
---------------------- Page: 12 ----------------------
IEC 61534-22:2014 © IEC 2014 – 11 –

After removal of the external load, the continuity of the protective circuit shall remain

unaffected.

A current of (25 ± 1) A a.c. having a nominal frequency of 50 Hz or 60 Hz supplied by a

source with a no-load voltage not exceeding 12 V shall be passed between the earthing

terminals at each end of the sample. Measurement of the voltage drop shall be made within

120 s after the initiation of the current flow. The impedance per metre, calculated from the

measurement of the voltage drop between the two supply connectors, shall not exceed the

value declared by the manufacturer or 0,05 Ω/m whichever is the lower.
14.101.2.3 Tap-off units

A tap-off unit shall be centrally installed on a length of powertrack which has a minimum

length of 0,5 m.

The powertrack is positioned on a horizontal rigid support. A steel cube of (50 ± 0,5) mm with

an edge radius of approximately 1 mm is placed centrally on the tap-off unit.

A vertical force of (750 ± 10) N is gradually applied over (60 ± 1) s and maintained for a

further (120 ± 5) s centrally to the cube.
During the test, there shall be no deformation that impairs electrical safety.
In case of doubt, the sample shall conform to Clause 10 and 11.1.1.1.

After the test, the sample shall show no signs of damage, nor any cracks visible to normal or

corrected vision without additional magnification.

After removal of the external load, the continuity of the protective circuit shall remain

unaffected.

A current of (25 ± 1) A a.c. having a nominal frequency of 50 Hz or 60 Hz supplied by a

source with a no-load voltage not exceeding 12 V shall be passed between the earthing

terminal or contact of the tap-off unit and the nearest point on the protective earth busbar with

the tap-off unit fully engaged as in normal use. Measurement of the voltage drop shall be

made within 120 s after the initiation of the current flow. The impedance calculated from the

measurement of the voltage drop between the two points stated shall not exceed the value

declared by the manufacturer or 0,05 Ω/m whichever is the lower.
14.101.3 Load test for onfloor PT system components
14.101.3.1 General

PT systems including tap-off units shall have sufficient mechanical strength against external

loads likely to occur during installation and use.
14.101.3.2 Powertrack

The test shall be performed on a sample consisting of two lengths of powertrack each with a

minimum length of 0,5 m which are connected together with the necessary connectors and

with a supply connector at each end of the sample.

The sample is positioned on a horizontal rigid support. A steel cube of (50 ± 0,5) mm with an

edge radius of approximately 1 mm is placed centrally on the joint. In the case of multi-

compartment powertrack whose partition walls provide support, the middle of the largest

compartment is selected, see Figure 101.
---------------------- Page: 13 ----------------------
– 12 – IEC 61534-22:2014 © IEC 2014

A vertical force of (1 000 ± 10) N is gradually applied over (60 ± 1) s and maintained for a

...

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