IEC 61386-23 pdf – Conduit systems for cable management – Part 23: Particular requirements – Flexible conduit systems
1 Scope
Clause 1 of IEC 61386-1:2008 is applicable, except as follows:
Addition:
This part of IEC 61386 specifies the requirements for flexible conduit systems.
2 Normative references
Clause 2 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable, except as follows:
Addition:
IEC 61386-1:2008, Conduit systems for cable management – Part 1: General requirements
IEC 61386-1:2008/AMD1:2017
3 Terms and definitions
Clause 3 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable.
4 General requirements
Clause 4 of IEC 61386-1:2008 is applicable.
5 General conditions for tests
Clause 5 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable.
6 Classification
Clause 6 of IEC 61386-1:2008 is applicable, except as follows:
Classifications 6.1.3, 1; 6.1.3, 2 and 6.1.3, 3 are not applicable.
NOTE Flexible conduit systems according to 6.1.1, 1; 6.1.1, 2; 6.1.2, 1; 6.1.2, 2 and classification 1 from 6.2.1,Table 1 are not allowed in France.
7 Marking and documentation
Clause 7 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable, except as follows:
7.1.101 The conduit shall be marked in accordance with 7.1 along its entire length at regular
intervals of preferably 1 m but not longer than 3 m. Where this is technically impractical, themark shall be on a label attached to the product at each end, or on the packaging.
Compliance is checked by inspection.
7.1.102The manufacturer shall document or include in the packaging,the minimum insidediameter, the minimum bend radius and the classification in accordance with
Clause 6 for the
conduit system.
Compliance is checked by inspection of the documentation.
8Dimensions
Replacement:
8.1 Threads shall comply with IEC 60423.
Compliance is checked by means of the gauges specified in lEC 60423.
8.2The minimum inside diameter of the conduitsystem shall be as declared by themanufacturer.
Compliance is checked by measurement.
Construction
Clause 9 of lEC 61386-1:2008 is applicable.
10 Mechanical properties
Clause 10 of IEC 61386-1:2008 and of lEC 61386-1:2008/AMD1:2017 are applicable,exceptas follows:
10.2Compression test
Subclause 10.2 is applicable with the following addition:
10.2.4 Add the following note at the end of Subclause 10.2.4:
NOTEIn order to achieve a uniformly increasing compression force，the force indicated in Table 4 is dvided bytime; this value is the required rate per second to fulfil the requirement.
Example: For a test force of 750 N an increase of the test force of 25 Ns is required (750 divided by 30 equals 25).Informative Annex AA gives detailed calculations including tolerances for time and force,
10.4 Bending test
Subclause 10.4 of lEC61386-1:2008 is not applicable.
10.5 Flexing test
Addition:
10.5.101 An assembly consisting of a conduit with a terminating conduit fitting, assembled in accordance with the manufacturer’s instructions, shall be subjected to a flexing test by means of the apparatus shown in Figure 101.
10.5.102 The test shall be made on six samples of conduit of an appropriate length. Three of the samples shall be tested at the minimum declared temperature for transport, application and installation as given in Table 1 with a tolerance of ±2 °C. The other three samples shall be tested at the maximum declared application and installation temperature as given in Table 2 with a tolerance of ±2 °C. A manufacturer may declare that a flexible conduit is suitable for transport and installation according to Table 1 but may only be suitable for flexing at ambient temperature as a minimum. In this case the test shall be carried out at (20 ± 2) °C and the third digit of the classification code shall be X. The manufacturer shall clearly declare in its literature both the minimum transport and installation temperature in accordance with Table 1, the minimum application temperature which is ambient and the maximum installation and application temperature in accordance with Table 2.
10.5.103 The sample shall be fixed to the oscillating member by means of the terminating conduit fitting as shown in Figure 101, so that when the conduit is at the middle of its travel, the axis of the conduit is vertical and passes through the axis of the oscillation. The apparatus with the sample shall be conditioned for 2 h or until the sample has attained the declared temperature, whichever period is the longer. 10.5.104 The oscillating member shall be moved backwards and forwards through a total angle of (180 ± 5)° divided equally about the vertical axis. The assembly shall be subjected to 5 000 flexings at a rate of (40 ± 5) flexings per minute. A flexing constitutes, starting from the vertical position, one continuous cycle of movement of essentially sinusoidal forms.
10.5.105 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, as shown in Figure 102, through the sample under its own weight and without any initial speed.