---

This distance also applies between points of support of cable racks or cable trays,

The minimum admissible temperature of cables during installation or handling is:

- 1O^flC for cables with thermoplastic oversheath,

25®C for cables with thermosetting oversheath.

For pulling in of cables by means of a puMIng head at the conductor the maximum value for the pulling force is 50 of total cross sectional area for cable with copper conductor.

During installation the bending radius measured at th a inner cable generatrix shall not fall below the values shown in the following table (where D is the overall diameter of the cables).

In the case of laying operation with controMed bending. I.a. bending over a shape, at a temperature not lower than 16 °С, the above specified bending radii may be halved

.'BLANK PAGE'

SECTION C : CABLES WITH COPPER OR ALUMINIUM CONDUCTORS;
UNARM OUR ED .ARMOURED OR DOUBLE SCREENED

CONTENTS

Page

1. Scope 5*C*2

2. Additional genet al requirements

   1. Identification of cores and cable marking &-C*2

   2. Conductor* 5-C-3

   3. Insulation, aheaih and other nun-metallic cable components 5-C-3

   4. Additional tost requirement* S-C-3

3. Cable* without metalic Layer*

   1. Code designation (Provisional) 505

   2. Rated voftage 5-C-5

   3. Construction 506

   4. Testa 5-C-6

4. Cables with metallic la vert

4_:1 Armoured cables

4,2 Screened cabto*

Taues; PVUl 5-СДЗ

Appendix: Guide to use 5-035

REFERENCES

References are made, in this Section C of Pan 5 of HD 604, to other Pans of this HD and to other Harmonisation Documents and International Standards as foVows:

HD 22 Rubber insulated cables of rated voltages up to and including 450/750V

HD 308 Identification and use of cores of flexible cables

HD 383 Conductors of insulated cables

HD 405 Tests on electric cables under fire conditions

HD 505 Common test methods for insulating and sheathing material* of electric cable*

HD 805 Electric cables : Additional test methods

HD 606 Measurement of smoke density of electric cables burning under defined conditions

HD 86-1 Radio frequency cable* : Part 1 : General requirements and measuring methods

IEC 287 Calculation of the continuous current rating of cables 1100% load factor)

In air cases reference to another HD or International Standard implies the latest edition of that document.

Pape &Ч>2 HD 604 SV1994 Part & Stctioo C

SEGUQfiLC

Г Scoot

This section specifies requirements for and dimensions of srngle core and multi-core XLPE Insulated and non halogenated sheathed cables having reduced fire prop*gat>on performance.

The maximum continuous conductor temperature shall not exceed 90*C. The maximum temperature for short-circuit condition is 25O°C І Мак. allowable time 6s).

This section covers the folowing classes of cable:

(1| Single and multicore unarm cured cables {including muhicore unarmoured cables).

2. Single and multicore armoured cables (including mufbcora control cables).

3. Single and multicore double screened cables.

2. Additional оепегді requirements

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

2Л Identification .of cores and cable marking

The cores of •> cables shall be identified cither by numbers or by colours.

Each core of al cables shall be identified as follows:

in cables having up to and including five cores by colours, see sub-dause 2,1.1

in cables having more than five cores by number, ие sub'da use 2.1.3.

The colours red, grey, white and when not in combination, green and yeiow, shaM not be used for any muiticore cable. Cables with a combined armour/ protective earth {PE) conductor shall not be provided with a green/yellow core,

Unless otherwise specified In clauses 3 and 4, the colour scheme for cables is:

:

single-core cable two-core cable three-core cable four-core cable

five-core cable

no preferred colour scheme

: Nack, light Nua

: either green/yofiow, black, light blue or Nack, light blue, brown

: either green/yellow, Nack, light blue, brown, or black, light bkie, brown, Nack

і either дгнеп/yellow, black, light Nue, brown, black, or black, light blue.brown, black, black

The distribution of the colours for the core coloured green/ yellow shall comply with the following condition (which is in accordance with HD 308): for every 15mm length of core, one of the» colours shat cover at least 30% and not more than 70% of the surface of the core, rhe other colour covering the remainder.

Nou: Informelion on the use of the colours green /yellow end light blue.

It Is understood that the colours green and yalow, when they are combined a* specified as above, ere recognised exclusively as a means of identification of the core intended for use as earth connection or similar protection and that the colour light blue is intended for the identification of the core intended to be connected to neutral. If, however, there is no neutral, light Ыие can be used to identify any core except the earthing or protective conductor.

The insulation of the cores shall be black and numbered sequentially, except for the core coloured green/yellow, if one is included.

The green/yeflow core, if any, ahaU comply with the requirement of Sub-clause 2.1,2 and shall be in the outer layer.

The numbering shall start at number 1 in the inner layer. For further requirements see clause 4 of Part 1.

The cable marking shall comply with clause 3 of Part 1.

The conductors shall consist of annealed copper; the wires may be plain or tinned. Conductors having a cross-sectional area of 10mm* and above may consist of aluminium instead of copper,

M non metaKc catAe components shall not contain halogenated materials. Compliance shall be checked by determination of the acidity and conductivity of any combusiwri gases as specified in Table L

For al types of sheath, the mean thickness shall not be lass than the specified value given in Clauses 3 and 4, However for all sheaths, the thickness st any place may be lass than the specified value provided that the difference does not exceed 0.1mm ♦ 15% of the specified value, unless otherwise specified in clauses 3 and 4.

2*4.1.1 УоНаое test on complete cable

|a| Teat conditions;

• mtnimum length of me sample m 20

• minimum period of immersion in water h 1

tor unarmoured and unscreened cables only

• temperature of the water «С 20 i 5

Рад S-СЧ

HD 604 SI J 994

Part 5 Section C

(Ы Vohage applied {a.Cl

3500

1c) Duration of each application of voltage, minimum

min

15

(dl Results to ba obtained

no breakdown

tel Teat method

HD 60S sub-clause 3.2.1

2.4.1.2 Vott&oe te*t on core*

(a) Teat conditions: length of the sample

* minimum period of knmersion in water * temperature of the water

m h °С

(bl Voltage appted la.cl

3500

(cl Duration of each appEcation of voltage, minimum

min

15

4. Re suits to ba obtained

5. Teat method

No breakdown

HD 605 sub-cteuse 3.2.2.2

24.1.3 Surface resistance test on sheath of unarmoured cables

(

•C 20 ± 5 h 24

HD 22*2, 2.7

10* (minimum)

a) Teat conditions: temperature duration

tb) Test method

(c) Result* to be obtained

2*4*2 fifind_Tcfit

Cables shaft be capable of withstanding banding and other mechanical strasses occurring during mstalation.

When specified in Clauses 3 and 4 compliance shaft be checked by the test given in sub* clause 2.4,1,1 of HD 605, however with the following deviations:

Number of complete turns : 3

Test temperature : 10 - 15°C

Mandrel diameter :

’ 8 к the mean outer diameter for estate* with a number of tore* not exceeding five and with a cross'sectional area not exceeding 6mm";

10 x die mean outer diameter for el other cables.

After the first bend cycle, only one more bend shall ba carried out in the reverse direction (in total one and a half cycles).

After the bend test, the sample shall withstand ch* voltage test on complete cable carried out in accordance with sub-clause 3.2.1 of HD 605 and with test conditions specified in sub-clause 2.4.1.1 above. Further, the sample shall not show any damage as a result of the banding when dismantled.РедеБС-Б HD 604 SI: 1994 Pen 6 Section C

2 4 3 Overal dimensions and ovality

The mean overal dimensions of the cables, rf specified, shai be witbin the limits given in ths tables in the particular specifications.

The ditto rance between any two vakias of the overal diameter of the cables at the time cross-lection (ovality) shal not exceed Imm 4 10% of the nominal diameter or of the upper limit specified for ths mean overall diameter.

Compliance than be checked by ths test* given in sub-clause 2-1-3.1 and 2.1.3.2 of HD 605.

2.4.4 Ttn rdated to fire conditions

2.4.4J Reduced flame propagation

All cables shall comply with the test specified in HD 406.3 Category C-

2 4.4.2 Smoke emission test

When a sample of the complete cable is tasted in accordance with HD606 Parts 1 and 2 the light transmittance shaM exceed the fokowing valuee throughout the test:

2 4.4.3 Test for acidity of combustion gases

See Table L Ref. No- 12.

2.4.5 Abrasion Test

When a sample of the complete cable is tested in accordance with HD 605 sub*ctause 2,4,5, the sheath or oversbeath shall be deemed to bo satisfactory provided that following the test, examination of sample without magnification reveals no cracks or spfets in the internal and external surfaces.

3. Cables without metallic layers ;

Cross linked polyethylene insisted and non-Mooenated ahtunhed catjfi

{under consideration by TC20)

YMi^mbzh

0,6/1 kV

Number of conductor» 1, 2, 3, 4 or 5 and for the cross-section» 1.5 and 2.5 mm¹ up to and including 61. Conductor* of three and four core cables with a cross-section al area of 50mm¹ and above may bo circular or shaped.

Conductors shall comply with the requirement* of HD 383, For each site of cable the class of conductor is given in Tables III or IV.

A separator of suitable material may be applied around each conductor. If required, tapes may be applied to comply with fire resistant requirements

The insulation shall be XLPE compound complying with the non-electrlcal requirements given in Table I.

The insulation thickness shall comply with the value specified in Tables III or IV.

The cores shall be twisted together.

The twisted cores shall ba covered by an extruded inner covering consisting of an unvulcanised rubber or plastic compound. For cable* with shaped conductors and cables with more than five cores, the extruded inner covering may be replaced by a non- hygroscopic tape wrapping

It shal be possible to separate the cores easily.

The sheath shall be non-halogenated compound of Type ZHI/ST complying with the non­electrical requirements given in Table I. The sheath* *h*N be applied around the inner covering or tape wrapping. It shall fit closely but not adhere to the inner covering.

The sheath thickness for cables with a number of cores not exceeding five shall comely with the specified value given in Table* III or IV.

For cables with more than five cores, the specified value for thickness of the sheath i* 1.8mm for cables with a number of cores up in and including 40 and 2.1mm for cable* with more than 40 core*.

For cables with a number of cores not exceeding with a ckciiar solid or circular stranded non-compacted conductors, the mean overall diameter shall be within the Hmrt* given in Table HL For other cables no limits for the mean overall diameter are prescribed.

3-4 lam

3. Compliance with ths requirements of sub-clause 3.3 and the appropriate requirements bl Part 1 shall be checked by inspection and by the tests specified in Table ILA.Cables with metallic layers

   1. Armoured cablet: Cross linked oohrathvlene insulated and nan-hatooenatod sheathed cable wrth combined агтоиг/дгоиспув earth conductor

      1. Code designation (Provisional)

(Under consideration by TC20)

ZjO-YM^Kasmbzh for cables with a braided armour/pcotactive earth conductor.

Z_tGYMz₁Kasmb2h for cables with а ЬвІІсаІіу applied armour/protective earth conductor.

4J.2 Rated voltaoe

0,6/1 kV

4 1.3 Construction

4,1,3.1 Conductor

Number of conductors 1, 2, 3, 4 or S and lor the cross-sections 1,5 and 2,5 mm* up to and including 61, Conductors of three and four core cables with a cross-sectional area of 50 mm* and above may be circufar or shaped. Conductors ehall comply with the requirements of HD 383. For each s*je of cable the class of conductor is given in Tables V and VL

4 1.3.2 Separator

A separator of suitable material may be apphod around each conductor. If required, tapes may be applied to comply with fire resistant requirements.

4ЛЛ.З Insuftation

The insulation shall be XLPE compound comp hying with the non-electrical requirements given in Table 1. Th® insulation thickness shatl comply with the value specified tn Tables V and V).

4.3.1-4 Assembly of cores

The cores of multicore cables shall be twisted together.

4.1 3.5 Intw cov^tva

The twisted cores shall be covered by an extruded inner covering consisting of unvutcanised rubber or plastic compound. For cables with shaped conductors and cables with more than five cores the extruded inner covering may be replaced by a non-hygroscopic tape wrapping.

It shall be possible to separate the cores easily.

4.13.6 inner sheath

The inner sheath shall be non'halogenated compound of Type ZH^/ST complying with the non*©!ectrical requirements given in Table 1 ■ The sheath shall be applied around The inner covering or tape wrapping. It shall fit closely but not adhere to the Inner covering.

Page 5*C-8

HD 604 Si : 1994

Part 5 Section G

The inner sheath thickness for cable* wftb a number of cores not exceeding five shaH comply with the specifies value given in Tablee V or VI.

For cables with more than five core* the specified value for thickness of the inner sheath is 0.8mm.

4.1.3.7 Cprr)bined a, mour/protect іуд earth (PE) coi

The arnwur/PE conductor shall be applied around the inner sheath •* a braid or in a helical form.

The armomTPE conductor shat comply with the following requirements.

4Л.3.7Л Composition

The armourtPE conductor shal consist of:

■ a braid erf gaNaniwd steel wwes or plain or tinned copper wk«s wlih a continuous braided flat conductor of tinned copper wires underneath, or an assembly of round or flat galvanised steel and plain or tinned copper wires, surrounded by a count er helix of galvanised steel tape or plain or tinned copper tape, or

- an assembly of round or flat plain or tinned,, copper wires surrounded by a counterheli к of plain or tinned copper tape.

The armpur/PE conductor may be covered by a separator of non- hygroscopic material

The thickness of the elements shall not be less than the specified value for each type and sire of cable shown in Tables V, VI and Vtl as appropriate

4-1.3.7.2 Copper conductor for earth connection

The connection of the armour/PE conductor, other than a complete copper armour, to earth shaN be possible by moans of one or more continuous copper conductors in contact with or forming part of the armour/РЄ conductor.

The cross sectional area of the braided conductor or of each of the latter copper conductors shall be at least 1 mm¹ and the total cross* sectional area shal not be less than 60%, with a minimum of 1 _r5mm of the nominal copper equivalent cross-sectional area of the armouiTPE conductor which is specified in Tables V, VI and VII as appropriate; the electrical resistance however being the criterion.