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GUJDE TO _USE

1. Seooe

This specification covers the application of 0.6/1 kV power cables according to HD 604 Part 4 Section C.

2. Object

The object of this document is to provide recommendations for the selection, storage, transport and installation of the cables specified under hem 1, Scope

Note: Safety requirements are not considered in this guide, a* they are covered by the relevant regulations and laws.

3. R^conwwndations for use

   1. РегггемІЫв apulkation

Specified cables according to HD 604 Part 4 Section C may be used indoors, also in wet locations, and outdoors for tiiced installations on wails and metallic structures. Direct burial in soil is allowed as specified in sub-clause 5,1.2.

Cables rated 0.6/1 kV may be used ^ir> DC systems having a rated operating volcage between conductors not higher than 1.5 kV and between conductors and eanh not higher than 0.9 kV.

4. Recommendations for storeoe and transport

   1. Delivery

The cables whose normal delivery length has a weight not exceeding 50 kg are usually supplied in coiU The cables having a higher weight are supplied in drums.

The cables either in co4s or drums shall be protected in order to avoid any damage.

The inner diameter of the coil or the diameter ert the drum core shall not be less than twice the controlted bending radius given in sub-clause 5.4.

The cable ends have to be sealed water-proof during transport, storage and laying.

Each coil or drum shall be marked on the outside with a durable label or inscription bearing the following instructions:

.. name or trade-mark of the manutscrurer

.. cable design a two (construction, nominal cross section, rated voltage, etc.. J by means of harmonised symbols whenever possible

.. reference to the HD number, whenever possible

.. actual cable length

6. Recommendations lorxablft laying and installation

   1. General recommendations

      1. Cables shall be installed and operated In such a way that their properties ore not endangered.

In this connection, the following points shad be taken into account:

(a) service conditions, such a* concentration of cables installed, influence of external heat* soil thermal resistivity, solar radiation, etc....

{bl chemical and electrochemical corrosion risks

(cj movements of wi and vibrations

Id) potential enact by fauna and flora

H the cables are provided with a metallic covering (screen], the additional shielding can be omitted.

In any case, the minimum laying depth shall be 0.5m.

The metallic covering (screen) is considered to be adequate under the following provisions:

1. its longitudinal continuity is ensured throughout the cable route

2. rt Is efficiently grounded

3. It is designed to withstand fault currents, it any.

Note: In case of cables being laid <rtstead of pulled in a duct this condition does not apply.

The number, position and shape of the bends in a pipe or duct must allow an easy pulling in and out of the cable, i.e. without exceeding Che maximum allowed puMng force.

H it is planned to lay single core cables of three phase systems through steel pipes, all cables belonging to the same system have to pass through the same pipe-

Thia distance also applies between points of support of cable racks or cable tray*.

The minimum admissible temperature of cables during mstallatiori or handling is 0°C

For poking in of cables by means of a pulling head at the conductor, the maximum value for the pulling force is 50 N/mm* of total cross sectional area for cables with copper conductor.

Note: Cables wtth aluminum conductor are not considered in this guide5*4 Bendina radius

During inauHation, the bending radius measured at die inner cable generatrix shell not fall below the values shown in the following table I where D is the overall diameter of the cables! ■

И the case of laying operation with controlled bending, i.e. bending over a shape, at a temperature net lower than 15 °С, the above specified radii may be halved

.'BLANK PAGE

SECTION D: CAfilfS.Wt.TH COPPER AND ALUMINIUM CONDUCTORS;
UNARMQUftED. ARMOURED OR DOUBLES OR EE NED

CONTENTS Еши

1. Scope 4-D-2

2. Additional general requirements

   1. Identification of core* and cable marking 4 0-2

   2. Conductor* 4-0-3

   3. Thickness of sheath 4D-3

   4. Additional test requirements 4-D-3

3. Cables without metallic layers

   1. Code designation I Provisional I 4-D-6

   2. Rated voltage 4-D-5

   3. Construction 4*D-5

   4. Tests 4 DB

4. Cables with metallic layers

   1. Armoured cable

4 1.1 Code designation (Provisional) 4*0'6

Tables: I - VIII 4 D12

Appendix: Guide 10 use 4-D-34

REFERENCES

References are made, in this Section 0 of Part 4 HO 604. to other Parts of this HD and to other Harmonisation Documents and International Standards as follows:

HO 306 Identification and use of cores of flexible cables

HD 383 Conductors of insulated cables (Endorsing IEC 223 and 228A1

HD 405 Tests on electric cables under fire conditions

HD 505 Common test methods for insulating and sheathing materials of electric cables

HD 606 Electric cables : Additional test methods

IEC 96-1 Radio frequency cables : Part 1 ’ General requirements and measuring methods

(EC 287 Calculation of the contKtuous current rating o< cables И00% load factotl

|n all cases reference to another HD <x International Standard implies the latest edition of that document*

SECTION D

1. Scope

This section specifies requirements for and dimensions of single core and multicore XL PE insulated end PVC sheathed cables having reduced fire propagation performance.

The maximum continuous conductor temperature shall not exceed 90°C. The maximum temperature for short -circuit condition is 25O*C (max. allowable time 6sl.

This section covers the foil Owing classes of cable:

(II single and multicore unarm cured cables (including multicore control cables)

(21 single and multicore armoured cables (including muhicore control cables)

(31 single and multicore double screened cables.

2. Additional general requirements

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

The cores of *4 cables shall be identified either by numbers or by colours.

Each core of al cables shal be identified as follows:

The colours red, grey, white and when not in combination, green and yellow, shall not be used for any multicore cable. Cables with a combined armour/protec live 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:

n

single core cable: two core cable: three core cable: four core cable:

five core cable:

o preferred colour scheme

black, fight blue;

either greervyetiow, black, light blue or black, fight blue, brown; either green/ yellow, black, light blue, brown or black, light blue, brown, black;

either green/yelow, black, tight blue, brown, black, or Ыеск, light blue, brown, black, black.

The distribution of the colours for the core coloured green/yeflow shall comply whh the fo4owing condition (which is in accordance with HD 3081:

for every 15mm length of core* one of these colours shall cover at least 30% and not more than 70% of the surface of the core, the other colour covering the remainder.Note: Information on the use of the colours green/yellow and light blue,

Il is understood that the colours green and yellow, when they are combined as specified above, are 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 tor the identification of the core intended to be connected to neutral If, however, there is no neutral, light blue can be used to identify any core except the earthing or protective conductor.

C

2.1.3

ore identification bv numbers

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

The green/yellow core, if any, shall comply with the requirement of sub-clause 2.1,2 and shall be In the outer layer.

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

The cable marking shall comely with clause 3 of Pan 1 *

The conductors shall consist of annealed copper; the wires may be plain or tinned. Conductors having a crowsoctional area of 10mrrH and above may consist of aluminium instead of copper.

2-3 Thickness of sheath

For all types of sheath, the mean thickness shall not be less than the specified value given in clauses 3 and 4.

However, for bH sheaths, the thickness at any place may be less 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.

lai Test conditions:

• m

  20

  1

  20 ± 5

  inimum length of sample m

• minimum period of immersion h in water for unarmoured and unscreened cables only.

• temperature of the water °С

(bl Voltage a poked lac)

V 3500

(c> Duration of each application min 15
of voltage (minimum)

I

No breakdown

d) Results to be obtained

(e) Test method

HD 605 sub-clause Э.2.1

2.4.1.2 Voltaoe test on cores

(a) Test conditions:

» minimum length of sample m &

• minimum period of immersion h 1

in water

* temperature of the water ^DC 20 t Б

(bl Voltage applied ta.c.l V 3500

(c) Duration of each application of min 16

voltage, (minimum!.

t

No breakdown

d) Results to be obtained

H

(el Test method

D 606 $ub<lausa 3.2,2.2

2.4.2 pend test

Cables shall be capable of withstanding bending and other mechanical stresses occurring during installaiion.

When specified in clauses 3 and 4 compliance shal 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 і 3

Test temperature : 10-16°C

Mandrel diameter

8 x the mean outer diameter for cables with a number of cores not enceerfrng fwe and with a cross-sectional area not exceeding 6 mm’;

10 x the mean outer diameter for all other cables.

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

After the bend test, the sample shafl withstand the voltage test on complete cable earned out in accordance with suto*clause 3.2.1 of HD 605 and with test conditions specified in sub-clause 2.4J 1 above. Further the sample shal not show any damage as a result of the bending when dismantled.

2.4.3 ОуЄ[Д]і dimensions and о veto

The mean overal dimensions of the cables, if specified, shall be within the limits given in the tables in the particular specifications.

The difference between any two values of the overall diameter of the cabiea at the same cross'section (ovality) shall not exceed 1mm + 10% of the nominal diameter or pt the upper limit specified for the mean overall diameter.

Comptiance shall be checked by the tests given in subclauses 2J .3.1 and 2.1.3.2 of HD 605

.2.4 4 Test related to fir* conditions

Bffllyced flame propagation

AH cables shaN comply with the test specified in pr HD 405-3 Category C.

Зь Cables without metallic layers;

Cross linked Dotvethytoe insulated, and polyvinyl chloride sheathed ejble

(under consideration by TC20I

YMvK mb

0 6/1 kV

33 1 Conductors

Number of conductors 1, 2j 3, 4 or 5 and for the crois sactions 1.5 and 2.5 mm¹ up to and including 61. Conductors of three and four cars cables with a cross-sectional area of 50 mm‘ and above may be circular or shaped.

Conductors shall comply with the requirements of HD 383. For each size 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 reqiared. tapes may be applied to comply with fire resistant requirements.

The insulation shall be XLPE compound complying wdh the non-electrical requirements given in Table I- The «isolation Thickness shall comply with the value specified in Tables III or IV,

The cores shaM be twisted together.

3-3-S loper covering

The twisted cores shall be covered by an extruded inner covering consisting of an unvulcanised 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*hygroscoplc tape wrapping.

It shafl he possible to separate the cores easily.33 6 Sheath

The eheath Shan be pctyvinyi chloride compound of Type PVC/ST complying with the non* electrical requirements given In Table L The sheaths shaM be applied around the inner covering or tape wrapping. It shall fit closely but not adhere to the inner covering.

The sheath thickness lor cables with a number of cores not exceeding live shaft comply with the specified value given in Tables III or IV. For саЫев with more than five cores the specified value for the thickness of the sheath is 1.8mm for cables with a number ot cores up to and including 40 and 2.1mm for cables with more than 40 cores.

3 3 7 Overall diameter

For cables with a number of cores not exceeding five and with circular solid or circular stranded non-compacted conductors, the mean overall diameter than be within the limits given in Tabla UL For other cables no limits for the mean overaN diameter are prescribed.

Compliance with the requirecnents of Subchuse 3.3 and the appropriate requirements of Part 1 shall be checked by inspection and by the tests specified in Table ll*A.

4, Cables with metallic layers

(Under consideration by TC20)

VO-YMvKae mb for cables with a braided armour/protective earth conductor VG’YMvKas mb for cables with a helically applied armour/proiective earth conductor.

0.6/1 kV

Number of conductors 1. 2, 3. 4 or 6 and for the cross-sections 1.5 and 2.5<nm^J up to and including 61. Conductors of three sod four core cables with a cross-sectional area of 50 mm* and above may be circular or shaped Conductors shall comply with the requirements of HD 383 For each sire of cable the class of conductor is given in Tables V and VI.

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

The insulation ehall ba XLPE compound complying with the non-etecuical requirements given m Table L The insulation thickness shall comply with the value specified in Tables V and VI.

The cores of muhicore cables shall be twisted together.

Ths twisted cores shall be covered by an extruded inner covering consisting of an unvulcanised 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.