Страница 4: ДСТУ EN 61386-1:2014. Conduit systems for cable management — Part 1: General requirements (62273)

Under consideration.

In Australia conduits and conduit fittings classified as low acid gas emission shall be tested in accordance with IEC 60754-1, evolve not more than the equivalent of 5 mg of hydrochloride­acid per gram of sample.

In Austria conduits and conduit fittings classified as low acid gas emission shall be tested in accordance with IEC 60754-2.

Not applicable.

NOTE Required only for fire-resistant conduits for survival circuits.

14. External influences

    1. Degree of protection provided by enclosure

       1. General

Conduit systems, when assembled in accordance with the manufacturer's instructions, shall have adequate resistance to external influences according to the classification declared by the manufacturer, with a minimum requirement of IP30.

Compliance is checked by the tests given in 14.1.1 and 14.1.2.

The assembly, tested for numeral 1 and above, shall be deemed to have passed the test if there is not sufficient ingress of water to form a drop visible to normal or corrected vision without magnification

Table 10 - Resistance to corrosion classification

Compliance for painted and zinc coated steel and steel composite conduits and conduit fittings is checked by the tests in 14.2.2.

For non-ferrous metallic and composite conduit systems, the manufacturer shall provide information about its protection against corrosion.

They shall then be totally immersed in a solution of 0,75 % potassium ferricyanide [K₃Fe(CN)o] and 0,25 % ammonium persulphate [(NH₄)₂S₂0g] in water and a quantity of about 0,1 % of a suitable wetting agent, for instance a sodium salt of an alkylnaphthaline sulphonic acid, shall be added.

The solution and the samples shall be maintained at a temperature of (23 ± 2) °С.

Each sample shall be tested separately, a fresh solution being used each time.

After immersion for 5 min ⁺₀⁵ s, the samples shall be removed from the solution and left to dry at ambient temperature in air. After completion of the test as described above, the samples shall show no more than two blue coloured spots on each square centimetre of the surface, and no blue spot shall have a dimension larger than 1,5 mm. Traces of rust on sharp edges, screw threads and machined surfaces, also any yellowish film removable by rubbing, shall be ignored.

The solution and the samples shall be maintained at a temperature of (23 ± 2) °С, without stirring.

NOTE The solution is made by dissolving 360 g of crystalline copper sulphate in 1 I of distilled water and neutralising with copper carbonate or copper hydroxide (about 1 g/l). The specific gravity is then checked and adjusted as necessary.

The container shall be such that it will not react with the solution and it shall be of such a size as to provide clearance of at least 25 mm between the walls thereof and the sample.

Each sample shall be immersed four times in succession in the same solution, each time for

1 min ⁺₀⁵ s. A fresh solution shall be used for each sample. After each immersion, the sample shall immediately be cleaned in running water with a brush to remove any black deposit. The sample shall then be wiped dry with a piece of clean soft cloth, and, except after the fourth immersion, returned to the solution. Care should be taken to clean out all holes and pockets.

After the test, the sample shall show no precipitation of copper which cannot be scrubbed off in running water, if necessary after immersion for 15 s in a 10 % solution of hydrochloric acid in water.

Traces of copper precipitation on screw threads, sharp edges and machined surfaces may be ignored.

15 Electromagnetic compatibility

Products covered by this standard are, in normal use, passive in respect of electromagnetic influences (emission and immunity).

NOTE When products covered by this standard are installed as part of a wiring installation, the installation may emit, or may be influenced by, electromagnetic signals. The degree of influence will depend on the nature of the installation within its operating environment and the apparatus connected by the wiring.

Dimensions in millimetres

Figure 1 - Arrangement for compression test

Section A-A

IEC 214/08

Dimensions in millimetres

NOTE This drawing is not intended to govern design, except as regards the dimensions shown.

- Impact test apparatu

s

material

Board of insulating Conduit

fitting

Conduit




'

IEC 215/08

Protective coating to be removed to provide direct metal connection for electrodes

- Assembly of conduit and conduit fitting for bonding test

NOTE Remove sharp edges and burrs.

Figure 4 - Arrangement for dielectric strength and insulation resistance tests - Rigid conduit











ІЕС 217/08

NOTE Remove sharp edges and burrs.

Figure 5 - Arrangement for dielectric strength and insulation resistance tests -
Pliable and flexible conduit








Dimensions in millimetres

Key

1 Closed back face

NOTE This drawing is not intended to govern design except as regards the dimensions shown.

1 225 min.




6. - Steel enclosure for test for resistance to flame propagation





Width: 300 ₂₅

ІЕС 219/08

Dimensions in millimetres

NOTE This drawing is not intended to govern design except as regards the dimensions shown.

6. - Test arrangement for resistance to flame propagation

Figure 8 - Test apparatus for resistance to heatAnnex A
(normative)

Classification coding for conduit systems

NOTE Annex A shows the classification coding format for declared properties of the conduit system, which may be incorporated in the manufacturer's literature.

First digit - Resistance to compression (see 6.1.1)
Very light compression strength	1
Light compression strength	2
Medium compression strength	3
Heavy compression strength	4
Very heavy compression strength	5





Second digit - Resistance to impact (see 6.1.2)
Very light impact strength	1
Light impact strength	2
Medium impact strength	3
Heavy impact strength	4
Very heavy impact strength	5





Third digit - Lower temperature range (see 6.2.1)
+5 °С	1
-5 °С	2
-15 °С	3
-25°C	4
-45 °С	5





Fourth digit - Lipper temperature range (see 6.2.2)
+60 °С	1
+90 °С	2
+ 105 °С	3
+ 120 °С	4
+ 150 °С	5
+250 °С	6
+400 °С	7







Fifth digit - Resistance to bending (see 6.1.3)
Rigid	1
Pliable	2
Pliable 1 self recovering	3
Flexible	4





Sixth digit - Electrical characteristics (see 6.3)
None declared	0
With electrical continuity characteristics	1
With electrical insulating characteristics	2
With electrical continuity and insulating characteristics	3





Seventh digit - Protection against ingress of solid objects (see 6.4.1)
Protected against solid foreign objects of 2,5 mm diameter and greater	3
Protected against solid foreign objects of 1,0 mm diameter and greater	4
Dust protected	5
Dust-tight	6





Eighth digit - Protection against ingress of water (see 6.4.2)
None declared	0
Protected against vertically falling water drops	1
Protected against vertically falling water drops when the conduit system is tilted up to an angle of 15°	2
Protected against spraying water	3
Protected against splashing water	4
Protected against waterjets	5
Protected against powerful waterjets	6
Protected against the effects of temporary immersion in water	7





Ninth digit - Resistance against corrosion (see 6.4.3 and Table 10)
Low protection inside and outside	1
Medium protection inside and outside	2
Medium protection inside, high protection outside	3
High protection inside and outside	4

Tenth digit - Tensile strength (see 6.1.4)
None declared	0
Very light tensile strength	1
Light tensile strength	2
Medium tensile strength	3
Heavy tensile strength	4
Very heavy tensile strength	5





Eleventh digit - Resistance to flame propagation (see 6.5)
Non-flame propagating	1
Flame propagating	2





Twelfth digit - Suspended load capacity (see 6.1.5)
None declared	0
Very light suspended load capacity	1
Light suspended load capacity	2
Medium suspended load capacity	3
Heavy suspended load capacity	4
Very heavy suspended load capacity	5





Thirteenth digit - Fire effects

Under consideration.Annex В

(normative)

Determination of material thickness

1. Material thickness of plain conduit

Measurements of the material thickness are taken at four places, approximately equally spaced around 360° of the conduit, and the mean value calculated as follows:








IEC 2424/2000

= mean material thickness 4

2. Material thickness of corrugated conduit

M easurements of the material thickness are taken at the root and the crest of the corrugation at four places, approximately equally spaced, around 360° of the conduit, and the mean value calculated as follows:

= mean material thickness 8

3. Material thickness of combined plain conduit and corrugated conduit

M easurements of the material thickness are taken at the root and the crest of the corrugation and plain section at four places, approximately equally spaced, around 360° of the conduit, and the mean value calculated as follows:

£¹ [b+(a+c)]

—- = mean material thicknes

s




4. Material thickness of combined plain conduit, corrugated conduit and plain conduit

Measurements of the material thickness are taken at the root and crest of the corrugation and plain section at four places, approximately equally spaced, around 360° of the conduit and the mean value calculated as follows:

У. [(a + c) + (b + d)]
= mean material thickness

8Bibliography

IEC 60670 (all parts), Boxes and enclosures for electrical accessories for household and similar fixed electrical installations

IEC 60754-1, Test on gases evolved during combustion of materials from cables - Part 1: Determination of the amount of halogen acid gas

IEC 60754-2, Test on gases evolved during combustion of electric cables - Part 2: Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring pH and conductivity

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