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Table 6 : Outer sheath waN thickness

SECTION I : ONE TO FOUR CORE CABLES HAVING ALUMINIUM OR
COPPER CONDUCTORS

CONTENTS

Pane

1. Scooe Б+2

2. Additional general requirement*

   1. Identification of cores 5-1-2

   2. Thickness of inner covering 5-1-2

   3. Cable marking Б-І-2

   4. 4 Additional teat requirement* 5-1-3

3. Cable* without or with metallic covering

   1. Code designation <Ртоті&юпаі} 54-4

   2. Rated voltage 5-I-4

   3. Construction 54*5

4. Test*

   1. General 5-1-6

   2. Insinuation test 51-6

   3. Cable bending teat at tow temperature 5-1-6

Т»Ы«: 1-5 5-1-7

1. Current rating information 54-16

2. Guide to use S-l-24

REFERENCES

Reference* are made, ip this Section I of Part 5 of HD 604_r to other Pans of thia HD and to other Harmonisation Documents and International Standards as follows:

In al саде* reference to another HD or International Standard implies the latest edition of that document.SECTION I

1. Siaizfi

Thia section specifies requirements for end dimensions of single and mufti-core cables having reduced fire propagation performance. These cables are insulated with either cross-linked polyethylene, <XLPE), or vulcanised EPR rubber compound. extruded directly on the conductor in halogen free fire retardant cables.

The maximum continuous conductor temperature shall not exceed 70°C. The maximum temperature for abort -circuit condition for not more than Sa is 160²⁹³⁰Сь

This section covers from V to 4-cors halogen free fire retardant cables having aluminium or copper conductor.

2. Additional general requirements

The folowing general requirements shall be read in conjunction with those given in Part 1

2 J Identification of cores

Cable core identification shall be made by using colours, or for phase cores with numbers on black cores,

W

Number of
cores

3

4

Numbers on black cores

1-2-3

1-2-3

Colour identification

hen using the colour identify abort the cores shall be identified as follows:

2.3,1 External marking

The external surface of ell cobles ehell be legibly marked with the foMowteg element» of marking:

E

Example

XYZ

AXCMK-HF 3к35 +16AI +lOCu

S

О.бЛкУ

HD604-54

lement»

1. Manufacturer's identification

2. Type detonation

3. Number and nominal cross-section of conductors

4. Letter N or $ tH needed)

5. Rated voltage

6. Standard

fri element 3 the conductor metal shak be indicated, If there are conductors of differing metals in the cable.

Element 4 Is used to indicate the presence or absence of a protective conductor. The tetter N indicates no protective conductor in the cable and the better S indicates a protective conductor in the cable. No tetter is used H the cable can be used a* either ■n N or an S type.

The external marking shall be embossed or indented on the oversheath.

The group of external marking elements shall be repeated after not more than Im.

A means of identifying the year of manufacture of the cable shall be provided throughout the length of the cable.

If the identification « made by marking on the surface, it shall comply with the requirement a given in sub-clause 2.3.1 in respect with the maximum distance for repeating the marking,

If the mark of an Approval Organisation is used it shall be provided throughout the length of the cable and it shall comply with the marking requirements of Subcteute 2,3.1.

The use of optional marking і» permitted. Where such marking is made it shaH be throughout the length of the cable.

2.4 Additional tsst reauiremants

The test is carried out as a dry test for the complete cables. The test voltapa is connected between the ewer conductor to be rested, end the other conductors including the concentric conductor connected together. АП the tenner conductors shal be tested.hot 54-4

HD 604 51:1994

Part 6 Section I

The teat voltage shall be either 4kV &OHz AC or 16 kV DC- The testing time h five minutes for AC end one minute for DC- The voltage is increased gradually to the specified value.

For throe phase cables the test may be carried out as a three phase test when the voltage between phase* Is V3 times the single phase test value given above.

The test method is given in HD 605 sub-clause 3*3.1, and the requirement at the test temperature of + 90^eC is 10** Dm,

2.4,3,1 Range of approval for single core cables

Type approval for the complete range of cables for single core type Is obtained by carrying out the tests given in Table 1, on minimum of one cable size.

2 4,3.2 Ranos of approval for mJtt-core cables

Type approval for the complete range of cables specified for miJti-cora typo ts obtained by carrying out the tests given in Table 1. on minimum of on* cable size.

3.

2*4*3*3

Test reauir

ЧЇЇІ-ЇЇ

II

According to Table 1.

Cablea without or with metallic coverirw

3.1

Code designations (Provisional) (Under consideration by TC20)

Cods designations (as given in Table 51 indicate the following:

A XMK-HF

AXCMKHF t

Ai/XLPE/No concentric conductor Al/XLPEJConcentnc Cu-condutor

3.2

XMK-HF XCMK HF BCMK-HF

Cu/XLPE4Mo concentric conductor

Cu/XLPE/Concentric Си-con ductor Cu/EPR/Concentric Cu-conductoc

Rated vottaoe

0.6/1 kV.

Part 5 Section I

3-3 Construction

The inner conductors are made of afuminium or anneaUd copper according to HD 383,

(a) croes-aection < 16mm* Сіам I sokd round (bl cross-section 16mm¹ сіма 1 solid or сіма 2 stranded compacted round (cl other cross-sections dess 2 stranded compacted round or sector-shaped.

Aluminium conductor may be also solid-

3-3X1 Mitral

The insulation shall ba crosslinked polyethylene, I XL PET or vulcanised EPR rubber compound- The msuiation ahal not hove a damaging effect on the conductor. The material shal meet the test requirements given in Table 1.

3 3 2.2 Insulation thictam»

The insulation shall be intact. The nominal thickness of the insulation Is specified In Table 4« The average value shall bo not lass than the specified nominal value. The thickness at any place shall not faJ below the specified nomine! value by more than 0.1 mm * 10%.

3 3.2.3 AttixnMv erf сомі, innti coverings and filter»

In mutticore cables the laid-up cores shaM have a lapped or extruded inner covering. The cables with round inner conductors shall have an extruded inner covering. The spaces between the conductors may be tilled by yams of proper material. Alternatively other means may be used to ensure Chat the construction becomes compact The materials of the filing construction she* be suitable for the permitted operating temperature of the cable and compatible with other materials of the саЫе. They shall be removable without damaging the insulation.

In case of need, a separation layer made of • suitable material may be used to prevent harmful interactions. The approximate thickness of the inner covering ia given fri Table 5.

3.3 4 Concentric conductor

The concentric conductor shall be made of annealed copper.

The concentric conductor shall be applied over the inner covering, h shall consist of one layer of round copper wires and a copper contact tips touching the wires.

The lay length of the wires shaM not be more than 50 times the diameter measured under the wires. If the copper wires have been laid in waveform, the angle of lay has to be such that the length of the wire is the same os calculated from die condition above-

The contact tape may be solid copper or a flat bundie of copper wires.

The concentric conductor has to be made so that the space between the single wire does not exceed 4mm. A maximum of 5% of the spaces may exceed 4mm, but shall not be more than 8mm.

The thickness of the contact tape shall ba 0.1 • 0.3mm and the width at least 3mm.

On the concentric conductor there shall be a separation layer made of a suitable material.

The nominal сгоы-мсЪол and the maximum resistance of the concentric conductor is specified in Tables 2 and 3.

3.3,5 Outer sheath

3-3.6.1 Material

The sheath than ba green weather-re sista nt extruded halogen free thermoplastic polymer compounds

The sheath shall meet the test requ<emants of Table 1, of this document.

The sheath material ah al be compatible with the other component materials of the cable. The sheath shall be removable without damaging the other elements of the c*We

3.3.5.2 Thickness of the sheath

The nominal thickness of the sheath ts specced in Table 5. The average value of the sheath thickness shall not bo less than the specified nominal value. The thickness of the sheath shall not at any point tall under the given nominal value by more than 0.1mm * 15%.

4. Tern

   1. GBDfiUl

Compliance with the requkemonts of sub-clause 3 3 shall be checked by inspection and by tests specified in Tables 1 and 2.

If the electrical strength of the cable installation has to be checked, the measurement is carried out either by 10 kV DC for 15 min or 3kV AC for 5 min.

The test shall be carried out completely <1 the test room for aN the cables of dause 3 according to HD 605 sub-clause 2.4 J .3.HD 604 $1:1994

Part $ Section I

ТвЫе 1 - Type mu

ТаЬй 1I continued)