---

The resistance of each conductor at 20^QC shall be in accordance with the requirements of HD 383 for the given class of conductor.

Compliance she! be checked by the test given In sub-dause 3.1.1 of HD 605.

A separator layer may be placed between the conductor end insulation. Unless otherwise specified. It shall be non-hygroscopic

It shall be easily removable from the conductor.

5.2,1 Material

The Insulation shaM be a compound as specified for each type of cable in the particular sections.

The test requirements and the references to test methods are specified in the particular sections.

The maximum conductor temperature in normal operation and the short circuit temparaiure for each insulation are specified in the particular sections.

5,2,2 ДшзЬйаіюп

The insulation may consist of one or more bonded layers. It shaN be so applied that ft fits closely on the conductor or over the separator tape, and it shall be possible to remove ft without damage to the insulation Hseif, to the conductor or to the metal coating if any. if required, compliance shall be checked by inspection and by manual test. The insulation shall be applied by a suitable extrusion process, cross-linked where required, and shal form a compact and homogeneous body.5,2,3 Thickness

The mean value of the thickness of insulation shall not be less than the specified vahje for each type and size of cable shown in the tables of the particular sections.

However, the thickness at any one place may be less than the specified value provided that the deference does not exceed 0.1mm + 10% of the specified value.

Compliance shall be checked by the test given in sub-clause 2,1.1 of HD 605

For each type of cable, the particular sections specify whether that cable includes filters or tapes or whether the sheath or inrar covering may penetrate between the cores, thus forming a filing.

Tapes may be appited as separators over the insulation of an individual core or as a binder over the core assembly

6,3-1 Material

The fillers and tapes, if any, shaB be composed of a suitable material.

When fillers or tapes are empteyad. there shaM bo no harmful interactions between the* constituents and the insulation and/or the sheath.

Compliance with this requirement shall be checked by the rest specified in the particular section,

5.3.2 АооГісаіюл

Where fillers are used these may be applied either separately or as рал of the inner covering or the inner sheath to form a compact and reasonably circular cable. It shall be possible to strip the filters, if any, from the cable without damaging the insulation of cores,

5 4 Inner covering Ibeddigfll

The inner covering, if any, may be extruded or lapped or a combinabon of the two.

1. .4 J Mai££li!

The material used for inner coverings shall be suitable for uses at the maximum conductor temperature of the cable in normal operation, and compatible with the cable components with which it is in contact.

Compliance with this requirement shall be checked by the test specified In tho particular section.

5. 4.2 Application

The extruded inner covering shall surround the core assembly completely and may penetrate the spaces between them, giving the assembly a reasonably circular shape. The extruded юл©* covering shall be easily separable from the cores.

Lapped beddings shall consist of one or more layers of tapa covering the entire outer surface of the core assembly.

For each type of cable, the particular sections indicate whether that cable includes an extruded inner covering or a lapped badding or a comb ria bon of these.Page 1-Ю

HD 604 SI: 1994

Part 1

6.4.3 Thickness

Unless otherwise stated in th* particular section» no measurement is required for the extruded or lapped inner covering.

6.5 Іпгіег sheath

An inner sheath may be specified in the particular sections.

6.6,1 Material

The material used for the extruded Inner sheath shall be suitable for use at the maximum conductor temperature of the cable in normal operation, and compatible with the cable components with which it is in contact.

The requirements and references to the teat methods are specified in the particular sections.

5.5.2 Application

The inner sheath shall be extruded in a single layer. The sheath may be applied over an inner covering, or directly over the core assembly Th* sheath shall not adhere to the cores.

6.6.3 Thickness

The thickness of the extruded inner sheath shall be as specified in the particular sections.

5.6 Metallic coverings

5.6J Type of metallic levers

The following types of metallic layers may be specified in particular sections:

al metalic screen

2. concentric conductor

3. metallic armour

4. a combination of the above

Detailed constructions of meta№c coverings, together with test methods and requirements, are specified in rite particular sections.

5.6.2 Add! .catkin

The metallic layers may be applied over an inner covering or inner sheath, as specified In th* particular sections.

6.7 Oversheath

57.1 Material

The overaheath shaN be a compound suitable for use at the maximum conductor temperature of th* cable in normal operation, and of the type specified for each type of cable in the particular sections.

The test requirements and the references to test methods for these compounds are specified in the particular sections5,7*2 Application

The ovwsheath shall be extruded and may consist of one or more layers*

For unarmoured cables IM sheath shall not adhere to the cores.

A separator, consisting of a film or tape, may be placed under the over sheath.

5.7.3 Thickness

Unless otherwise specified In the particular section the following requirements shall apply.

57.3 J Sheath aodied over smooth surface

For a sheath appbod on a smooth cylmdncai surface, such as an inner covering, a metal sheath or the insulation of a single core, the mean value of the thickness of the oversheath shall not be less than the specified value for each туре and size of cable shown in the tables of the particular sections.

However, the thickness at any piece may be less than the specified value provided that the difference does not exceed 0,1mm + 15% of the specified value.

Test methods are specified in sub-clause 2J .2 of HD 605.

5.7,3.2. Shapth ago і ad aye г u ne ye n surface

For a sheath applied on an irregular cylindrical surface, such as a penetrating sheath on an unarmourad cable without mrw covering or a sheath apptad directly over armour, men lie screen or concentric conductor, the smallest thickness at any point of the oversheath shall not fan below the value given in the appropriate particular sections by more than 0.2mm >20% of the specified value.

Test methods are specified in sub-clause 2.1.2 of HD 605.

5.8 Non-matalic

.*i*ini*

Осипа of halogen free cabtea

All non-metal lie components shall be halogen free. This shall be checked by the test specified in HD 602 unless otherwise specified in the particular section.

8. Teste on complete cables

All cables shall comply with the req инет ants given in the particular sections.

7. I spare I

8. 1 spare)

9. Guide to use and selection of cables

For guidance on the use of cables see particular sections of this HD.

When selecting cables, attention is drawn to the fact that national conditions or regulations covering, eg. climatic conditions or installation re Quire menu, may exist. These should therefore be followed in conjunction with this HD.PW 1'12

НО 604 S11994

Pert 1

'BLANK PAGE'

HD 604 S1:1994

0.6/UV POWER CABLES WITH SPECIAL FIRE PERFORMANCE
FOR USE IN POWER STATIONS

PART 3 : SINGLE CORE AND MULTICORE PVC INSULATED AND SHEATHED CABLESBLANK PAGE

SECTION A: CABLES WITH COPPER AND ALUMINIUM CONCENTRIC CONDUCTORS

CONTENTS

Paoe

1. Scope 3 A’2

2. Additional general requirements

   1. Identification of cores 3-A-2

   2. Thickness of inner covering Э-А-2

   3. Cable markmg 3-A-2

   4. Additional test requirements 3-А-Э

3. (Not applicable! 3-A-3

4. Cables with concentric conductor

   1. Code designation (Provisional! 3-A-4

   2. Rated voltage 3 A-4

   3. Construction 3-A-4

   4. Testa 3-A6

Tables: 1 - З 3-A-7

Appendices; 3-A-11

1. Guide to Use

2. Current Ratings

References яге made, tn this Section A of Fart 3 of HD 604, to other Parts of this HD end to other Harmonisation Documents and international Standards аз foflowsr

HD 21 Polyvinyl cMortde insulated cables of rated voltages up co and including 450/750V

HD 383 Conductors of insulated cables {Endorsing I EC 228 and 228A)

HD 406 Tests on electric cables under fire conditions

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

HD 605 Electric cables : Additional test methods

ІЄС 287 Calculation of the continuous current rating of cables (100% bad factor!

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

Thi* section of the HD specifies requirements for and dimensions of mufticore PVC insulated and sheathed cables having reduced fire propagation performance.

The cables have concentric conductor and are intended for use for fixed installations in buildings. In channels, in open air or directly buried in the ground.

The maximum continuous conductor temperature shall not exceed 70*C.

This section covers the following classes of cables:

UI 3 core cables with dess 2 akjminkxn-conductors with a cross section equal to or greater than 50mm^J having a concentric conductor.

(■) 3 core cables with class 2 cop per'conductors with a crass section equal to or greater than 50 mm^a having a concentric conductor.

2. Additional atntral rwuirtmantt

The following general requirements shall be read in coniunciion with those given in Pan 1. Each cable shall furthermore comply with the appropriate requirements given In HD 21 Pan 1,

The cores of all cables shall be identified by colours in accordance with the following order of rotation:

Number of cores Identification

Three: Blue. gray, red

The minimum thickness of the extruded Inner covering ehall not be leas than the specified value for each type and size of cable shown in Table 3.

The method of cable marking shal comply with Clause 3 of Pan 1 of this HD and the following requirements:

2 3.1 External marking

If Manufacturer's identificatron XYZ

21 Code designation as stated in 4.1,

31 Number of cores and area of conductor and area of concentric conductor.

4| Voltage designation 1 kV.

5> Standard number HD 604-3-A.

6) Year of manufacture.The marking of Elements 1 -6 shall be by embossing or printing o' indenting into the oversheath.

Compliance shall be checked by visual examination,

If the mark of an Approval Organisation is used it shall be provided throughout the length of the cable and applied on the surface of cable in the form of the symboits) specified by the Approval Organiaation.

As an alternative to the mark of the Approval Organisation an identification thread may be incorporated into the cable as specified by the Approval Organisation.

The use of optional marking t* permitted. Where such marking is made it shall be throughout the length of the cable, and may be on the external surface of the cable, or by means of a tape or a thread within the cable or by a combination of these methods. If the additional marking ta applied to the surface of the cable It shall not render tl legible the marking specified an sub'clause 2.3,1 - 2.3.2.

The additional marking, however, shall be repeated at intervals not exceeding 1100 mm.

2.4 Additional test requirements

1. .4.1 Sampkno for thickness measuremmt

Make the measurement of thickness of insulation, extruded Inner covering and о ver sheath listed in the schedule of test requirements (Table 21 on a sample taken from one end of each drum length of the cable selected for the test, having discarded any portion which may have suffered damage.

if any of the thicknesses measured does not comply with subleases 4.3,2, 4.3.4 and 4.3.5 of thia Fart, then two further samples shall be checked for the non*compliant items. If both samples meet the specified requirements the cable is deemed to comply, but if either does not meet the requirements the cable is deemed not to comply.

The measuring procedure shall be earned out according to HD 21.2 sub clause 1.9.

2. 4.2 Approval for test related to fire conditions

Type approval fpr the complete range of cables specified for this type is obtained by carrying out the test given in sub'dause 4.1.6 of № 605 and HD 405 3 Category C.

When the cable sample is tested according to sub-clause 4.1.6 of HD 605 the burning shall cease within 30 seconds after removing the бате.

3. Cables without con centric conductor

Not applicable.

3. Cables with cortcantric conducts

4Л Coda designation [Provisional)

Harmonised code designation has to be considered by CENELEC TC20.

Provisional code designation:

• PSP-AL, for cables with class 2 eheninium-conductors

• PSP-CLL for cables with class 2 copper-conductors

• .2 RawLvtftaoa

0.6 / 1 kV

4-3 Construction

The conductors shall be round or sector shaped

The conductors shall comply with the requirements of HD383 Class 2 for stranded conductors.

The insulation shall consist of extruded polyvinyl chloride compound of type ТІ 1, applied around each conductor complying with the по»electrical requirements given in Table 1 and the minimum insulation resistance requirements at 70 °С given in Table 3. column 7.

The insulation thickness shall comply with the specified values given in Table 3, column 3.

However, the thickness at any place may be less than the specified value provided that the difference does not exceed 0.1 mm ♦ 10% of the specified value.

The cores shall be cabled helically,

A tape may be applied over the cabled cores.

The cabled cores shall be covered by an extruded inner eovenng, which shal be composed of a compound based on unvulcarwsed rubber or plastic compound,Where the inner covering it composed of unvulcanised rubber, there shall be no harmful interactions between its constituents and the insulation and/or sheath.

Compliance with thia requirement shall be checked by the test given in sub clause 8.1.4 cf HD 505-1.2.

4 3 4.2 Application

The extruded inner covering shal surround the cores and may penetrate the spaces between them, giving the assembly a practically circular shape. The extruded inner covering shall not adhere to the cores.

4.3.4.3 inoar cowtrino th-cfcne»

The thickness of inner covering shall comply with the specilied values given in Table 3, column 4.

The concentric conductor shall be of plain annealed copper wires.

The copper wires shal be wound or SZ cabled around the cable cores.

The gap between the copper wires shall on average not be more than 4 mm,

A copper tapa helix shaN be applied over the copper wires.

The electrical resistance of the concentric conductor shal not ba more than the values specified for the equivalent class 2_tcopper conductor in HD 383.

The minimum nominal cross sectional area of Che concentric conductor is specified in Tabla 3, column 5.

The sheath shall consist of ал extruded polyvinyl chloride compound of type TM1, applied around the inner covering and concentric conductor, complying with the non electrical requirements given in Table 1

The sheath shal be extruded in a single layer.

The sheath shal not adhere to the inner covering. A separator consisting of a tape or e film may be placed under the sheath.4 3.6.3 Sheath thickne—

The shaath thickness shall comply with the specified values given in Table 3, column 6.

However, the thickness at any place may be less than the specified value provided that the difference does not exceed 0-1 mm 4 15% of the specified value.

Compliance shall be checked by the test given in HD 21 Part 2 sub-clause LIO.

4.3.6.4 Additional requirements

The colour of the outer sheath shall be grey.

4.4 Tests

Compliance with the requirements of clause 4.3 shall be checked by inspection and by the tests specified in Table 1 and 2.

Table 1 - Requirements for the поП’ШсігісаІ test for polyvinyl chloride (PVCJ insulation end sheath