www bzfxw com Copyright British Standard Reproduced by IHS under No reproduction or network ` , , ` , , , ` ` , , ` , , ` , ` , , ` BRITISH STANDARD BS EN 50086 2 2 1996 Incorporating Amendment No 1 a[.]
Trang 1BRITISH STANDARD BS EN
50086-2-2:1996
Incorporating Amendment No 1 and Corrigendum No 1
Specification for
Conduit systems for cable management —
Part 2: Particular requirements — Section 2.2: Pliable conduit systems
The European Standard EN 50086-2-2:1995 with the incorporation of amendment A11:1998 has the status of a British Standard
This British Standard should be read in conjunction with
BS EN 50086-1:1994
ICS 29.120.10
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
Copyright British Standards Institution
Reproduced by IHS under license with BSI - Uncontrolled Copy
Trang 2`,,`,,,-`-`,,`,,`,`,,` -This British Standard, having
been prepared under the
direction of the
Electrotechnical Sector Board,
was published under the
authority of the Standards
Board and comes into effect on
15 April 1996
© BSI 26 February 2002
The following BSI references
relate to the work on this
standard:
Committee reference PEL/113
Draft for comment 92/04072 DC
ISBN 0 580 25528 X
Committees responsible for this British Standard
The preparation of this British Standard was entrusted to Technical Committee PEL/113, Cable management, upon which the following bodies were represented:
ASTA Certification Services British Electrical Systems Association (BEAMA Ltd.) British Telecommunications plc
Electrical Installation Equipment Manufacturers’ Association Electricity Association
Gland Manufacturers’ Technical Committee Institution of Electrical Engineers
Institution of Incorporated Executive Engineers
Amendments issued since publication
10514 January 2000 Deletion from Annex AA of
A-deviations for Finland
13546
Corrigendum No 1 26 February 2002 Correction to title of standard
Trang 3`,,`,,,-`-`,,`,,`,`,,` -BS EN 50086-2-2:1996
Contents
Page Committees responsible Inside front cover
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Trang 4
`,,`,,,-`-`,,`,,`,`,,` -National foreword
This British Standard has been prepared by Technical Committee PEL/113 and
is the English language version of EN 50086-2-2:1995, Conduit systems for cable
management — Part 2-2 Particular requirements for pliable conduit systems,
including amendment A11:1998 and corrigendum February 2001, published by the European Committee for Electrotechnical Standardization (CENELEC)
This British Standard is to be read in conjunction with BS EN 50086-1:1994
Specification for conduit systems for cable management — Part 1: General requirements The references to Part 1 should be read as references to
BS EN 50086-1:1994 which is the English language version of EN 50086-1:1993
A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application
Compliance with a British Standard does not of itself confer immunity from legal obligations.
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 9 and a back cover
The BSI copyright notice displayed in this document indicates when the document was last issued
Trang 5EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 50086-2-2
May 1995
+ A11
December 1998
ICS 29.120.10 Incorporating corrigendum February 2001
Descriptors: Electric wiring system, pliable conduit, mechanical characteristics, electrical characteristics, test
English version
Conduit systems for cable management — Part 2-2: Particular requirements for pliable conduit
systems
(includes amendment A11:1998)
Systèmes de conduits pour la gestion du
câblage —
Partie 2-2: Règles particulières pour systèmes
de conduits cintrables
(inclut l’amendement A11:1998)
Installationsrohrsysteme zum Führen von Leitungen für elektrische Energie und für Information —
Teil 2-2: Besondere Anforderungen für biegsame Elektroinstallationsrohrsysteme (enthält Änderung A11:1998)
This European Standard was approved by CENELEC on 1994-12-06 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
CENELEC
European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B-1050 Brussels
© 1995 Copyright reserved to CENELEC members
Ref No EN 50086-2-2:1995 + A11:1998 E
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Trang 6Foreword
This European Standard has been prepared by
CENELEC Technical Committee TC 113, Cable
management systems
The text of the draft was submitted to the formal
vote and was approved by CENELEC as
EN 50086-2-2 on 1994-12-06
This Part 2-2 specifies particular requirements for
pliable conduit systems
A conduit system which complies with this standard
is deemed safe for use
The following dates were fixed:
For products which have complied with the relevant
national standard before 1996-12-01, as shown by
the manufacturer or by a certification body, this
previous standard may continue to apply for
production until 2001-12-01
This Part 2-2 supplements or modifies the
corresponding clauses of EN 50086-1:1993, Conduit
systems for cable management — Part 1: General
requirements.
Where a particular clause or subclause of Part 1 is
not mentioned in this Part 2-2, that clause or
subclause applies as far as is reasonable Where this
Part 2-2 states “addition”, “modification” or
“replacement”, the relevant text of Part 1 is to be
adapted accordingly
Subclauses, tables and figures which are in addition
to those in Part 1 are numbered starting with 101
Annexes which are in addition to those in Part 1 are
labelled AA, BB, etc
Foreword to amendment A11
At the request of the Finnish electrotechnical
committee, a draft for an amendment to
EN 50086-2-2:1995 was submitted to the
CENELEC members for acceptance in
October 1998
The text of the draft was accepted by CENELEC as
amendment A11 to EN 50086-2-2:1995 on
1998-12-16
The following dates were fixed:
Contents
Page
2 Normative references 3
4 General requirements 3
5 General conditions for tests 3
7 Marking and documentation 3
10 Mechanical properties 4
11 Electrical properties 5
14 External influences 6
15 Electromagnetic compatibility 7
Annex AA (informative) A-deviations 7 Figure 101 — Bending test apparatus 7 Figure 102 — Gauge for checking the
minimum inside diameter after bending and resistance to heat tests 8 Figure 103 — Assembly of conduit and
terminating fitting for bonding test 8 Table 101 — Thread lengths 4 Table 102 — Maximum entry diameter
and minimum entry length details 4
— latest date by which the
EN has to be implemented
at national level by
publication of an identical
national standard or by
endorsement (dop) 1995-12-01
— latest date by which the
national standards
conflicting with the EN
have to be withdrawn (dow) 1996-12-01
— latest date by which the existence of the
amendment has to be announced at national
— latest date by which the amendment has to be implemented at national level by publication of an identical national
standard or by endorsement (dop) 1999-06-16
Trang 7EN 50086-2-2:1995
1 Scope
This clause of Part 1 is applicable, except as follows
Addition:
This standard specifies the requirements for pliable conduit systems including self-recovering conduit systems
Conduit systems which are used as an integral part of other equipment also have to be tested according to the relevant standard for that equipment
2 Normative references
This clause of Part 1 is applicable
3 Definitions
This clause of Part 1 is applicable
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 6.1.1.1, 6.1.2.1, 6.1.3.1, 6.1.3.4, 6.1.4.1 and 6.1.5.1 are
not applicable
7 Marking and documentation
This clause of Part 1 is applicable, except as follows
Addition:
7.1.101 The conduit shall be marked in accordance with 7.1 at regular intervals along its length of
preferably 1 m but not longer than 3 m Where this is technically impractical, the mark shall be on a label attached to the product at each end
Compliance is checked by inspection.
7.1.102 The manufacturer shall document for the system the minimum inside diameter and the
classification in accordance with clause 6.
Compliance is checked by inspection.
8 Dimensions
Replacement:
8.1 Threads shall comply with EN 60423.
Outside diameters of non-metallic conduits shall comply with EN 60423
Outside diameters of metallic and composite conduits need not comply with EN 60423, providing they are used with terminating fittings with threads complying with EN 60423
Compliance is checked by means of the gauges specified in EN 60423.
8.2 Threadable conduits and threadable conduit fittings shall comply with Table 101 Non-threadable
conduit fittings shall comply with Table 102 The minimum inside diameter of the conduit system shall be declared by the manufacturer
Compliance is checked by measurement.
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Trang 8Table 101 — Thread lengths
Table 102 — Maximum entry diameter and minimum entry length details
9 Construction
This clause of Part 1 is applicable
10 Mechanical properties
This clause of Part 1 is applicable, except as follows
10.2 Compression test
For self-recovering conduits, instead of 10.2.4, 10.2.5, 10.2.6, 10.2.7 and 10.2.8, the following applies.
10.2.101 The intermediate piece shall be submitted to a constantly increasing compression force (N)
determined in such a way as to flatten the sample by an amount exceeding 25 % but not exceeding 50 % of
its initial outside diameter within 30 s The compression force shall not be less than the values given
in Table 4
The force and the intermediate piece shall then be removed Fifteen minutes after removal, the outside
diameter of the sample, where it has flattened, shall be measured again
After the test, the difference between the initial outside diameter and the outside diameter of the flattened
sample shall not exceed 10 % of the outside diameter, as measured before the test and the sample shall
show no cracks visible to normal or corrected vision without magnification
Size External thread Internal thread
Minimum length
(mm) Minimum length (mm)
6
8
10
12
16
20
25
32
40
50
63
75
05,5 06,5 08,5 10,5 12,5 14,0 17,0 19,0 19,0 19,0 19,0 19,0
06,5 07,5 09,5 11,5 13,5 15,0 18,0 20,0 20,0 20,0 20,0 20,0
Size Maximum entry diameter
(mm)
Minimum entry length
(mm)
6
8
10
12
16
20
25
32
40
50
63
75
06,5 08,5 10,5 12,5 16,5 20,5 25,5 32,6 40,7 50,8 63,9 75,9
06,0 08,0 10,0 12,0 16,0 20,0 25,0 30,0 32,0 42,0 50,0 50,0
Trang 9EN 50086-2-2:1995
10.4 Bending test 10.4.101 Conduits shall be subjected to a bending test by means of the apparatus shown in Figure 101.
10.4.102 The test shall be made on six samples of conduit, the length of each sample being at least:
a) 30 times the nominal outside diameter for plain conduits;
b) 12 times the nominal outside diameter for corrugated conduits
Three of the samples shall be tested at the ambient temperature; the other three shall be tested at the declared transport, permanent application and installation temperature in accordance with Table 1 with a tolerance of ±2 °C
10.4.103 For the test at ambient temperature, the sample shall be clamped vertically in the bending
apparatus in accordance with Figure 101 The sample shall be slowly bent by hand to the left through approximately 90°, back to the vertical position, to the right through approximately 90°, and back to the vertical position This sequence of operations shall be repeated three more times but at the end the sample shall not be bent back to the vertical position The sample shall be maintained in the bent position for 5 min, after which it shall be placed in such a position that the straight portions are at 45° to the vertical, one end of the sample pointing upwards and the other downwards
For the test at the declared transport, permanent application and installation temperature, the sample clamped in the bending apparatus as shown in Figure 101 shall be conditioned for 2 h in a cold chamber at this temperature ±2 °C
After the test, the sample shall show no cracks visible to normal or corrected vision without magnification and it shall be possible to pass the appropriate gauge, in accordance with Figure 102, through the sample under its own weight and without any initial speed
10.5 Flexing test
This subclause of Part 1 is not applicable
10.6 Collapse test
This subclause of Part 1 is not applicable
10.7 Tensile strength
This subclause of Part 1 is applicable, except as follows
10.7.3 is not applicable.
11 Electrical properties
This clause of Part 1 is applicable, except as follows
11.5 Bonding test Replacement:
A sample of conduit and terminating fitting shall be assembled in accordance with the manufacturer’s instructions and Figure 103 A current of 25 A, having a frequency of 50 Hz to 60 Hz, derived from an a.c source having a no-load voltage not exceeding 12 V, shall be passed through the assembly for 1 min s, after which the voltage drop shall be measured between the points shown in Figure 103 and the resistance calculated from the current and this voltage drop
The resistance shall not exceed 0,05 %
Where special devices are required for the coupling of conduit and terminating fitting, it shall be sufficient
to remove the protective coating from the conduit, or the protective finish shall be removed in accordance with the manufacturer’s instructions before the voltage is applied
+5 0
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Trang 1012 Thermal properties
This clause of Part 1 is applicable, except as follows
12.2.4 Replacement:
The load is then removed and immediately after its removal it shall be possible to pass the appropriate
gauge, in accordance with Figure 102, through the conduit under its own weight and without any initial
speed, with the sample in the vertical position
13 Fire effects
This clause of Part 1 is applicable
14 External influences
This clause of Part 1 is applicable, except as follows
14.1.1.2 Addition:
When tested for first numeral 5 or 6, the assembly shall be tested as a category 2 enclosure
14.1.2.2 Addition:
When tested for second numeral 3 or 4, the assembly shall be tested using the oscillating tube