---

Theee cables have three cores 1i4l sire with th* tooth core hell-site: the feeteiacce of the fourth core * prop oner el to wo3-F-6
HD 604 SI: 1994
Рмі 3 Section F

'BLANK PAGE'

HD 604 $1:1994
0,6/lkV POWER CABLES WITH SPECIAL ARE PERFORMANCE FOR USE
IN POWER STATIONS

PART 4: SINGLE CORE AND MULTI CORE XLPE AND EPR INSULATED, PVC OR
CHLORINATED ELASTOMER SHEATHED CABLESHD 604 51:1954

Part 4

'BLANK PAGE'

SECTION A: CABLES WITH COPPER AND ALUMINUM SOLID OR STRANDED CONDUCTORS

CONTENTS

Pwt

1. . Scope 4-A-2

2. . Additional general requirements

2Л Identification ol cores 4A-2

3» Cables without concentric conductors

3-3 Construction 4-A-4

4. (Not applicable! 4A6

Tables: 1*3 4-A*7

Appendices:

1. Guide to use 4 A 13

2. Current rating 4-АЛ7

■ ■■■■■«*«,. I . ІЧЧ

REFERENCES References are made, in this Section A of Pan 4 of HD 604. to other Parts of this HD and to other Harmonisation Documents and International Standards as follows: HD 21 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V

HD 393 Conductors Of insulated cables I Endorsing I EC 228 and 228AI

HD 406 Tests on electric cabios under fire conditions

HD 506 Common teat method* for insulating and sheathing materials of electric cables

HD 60S Electric cables : Additional test methods

IEC 287 Calculation of ths continuous current rating of саЫе* (100% load factor)

ІЄС 602 Extruded solid dielectric insulated power cables for rated voltages from IkV to 30kV

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

SECHOfiLA

1. Scone

Thia section of the HD specifies requirements for and dimensions of single core and four core cross- linked polyethylene insulated and PVC sheathed cables having reduced fire propagation performance.

The cables are without concentric conductor and are intended for use for fixed installations in buBdings. in channels, in open air or directly buried in the ground.

The maximum continuous conductor temperature shall not exceed 90°С, and 260° C during short-circuit in в maximum of 1 second.

This section covers the following classes of cables:

(i) Single core cables with class 1 or 2 akimkivum or cooper conductor* with a cross section equal to or greater than 25 mm¹.

|ii} Four core cables with daas 1 or 2 акітіпіімті or copper conductors with a cross section equal to or greater than 25 mm¹.

2. Additional oeneral гмиігалмпм

The fol to wing general requirements shall be read in conjunctkin with those given in Part 1.

Each cable shall furthermore comply with the appropriate requirements given in ІЄС 502 -

The core* of all cables shall be identified by colours and for four core cables in accordance with the f0*0wing order of rotation:

Number of core* Identification

One Bieck or green fyellow

Four Black, light blue, brown, black with white line

or GreenZyeltow, black, light blue, brown.

The minimum thickness of the extruded inner covering shall not be less than the specified value for each type and size of cable shown to Table 3.

1} Manufacturer's identification XYZ

2) Code designation as stated in 3 J

31 Number of cores and area of conductor

41 Voltage designation IkV

5} Standard number HD 604 4-А

61 Year of manufacture

The marking of Elements 1 -6 shall be by embossing or indenting or printing on the о ver a heath

Compliance shall ba checked by visual examination,

2-3.2 The mark of an Approval Organisation

If the mark of an Approval Organisation is used it shall be provided throughout the length of the саЫе and applied on the surface of the cable in the form of the symbol(s> specified by the Approval Organisation.

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.

2.3.3 Optional marking

The use of optional marking is permitted. Where such marking is made rt shall ba 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 is applied to the surface of tho cable it shall not render illegible the marking specified in sub-clause 2.3 1 - 2,3.2.

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

2.4 Additional lest requirements

2 4.1 Samolinn for thickness measurement

Make the measurement of thickness of insulation, extruded inner covering and oversheath isted in the schedule of test requirements (Table 2) 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.

Hany of the thicknes&Bs measured does not comply with sub-c!au$ea 3,3.2, 3 3 4 and 3 3 6 of this Part, then two further samples shall be checked for the non-compkant items. If both samples meet the specified requirement* the cable is deemed to comply, but tt either does not meet the requirements ths cable is deemed not to comply.

The measuring procedure is carried out according to HD 21.2 sub clause 1,9.

2.4.2 Approval for test related to бге conditions

Type approval for the complete range of cable specified for this type is obtained by carrying out the test given in sub-clause 4,1.6 of HD 605 and HD 406,3 Category C.

When the саЫ« «ample is tested according to sutxtause 4.1.6 of HD 605 the burning «hall cease within 30 second* after removing the flame.

3. Cables without concentric conductor

   1. Code deaionation (Provisional)

(Code designations are under consideration by CENELEC ТС20Л

Provisional code designation:

■ PVIKSX

- PVIKSXJ, for cables with 1 green/ycllow core.

0.6/1 kV

33 Construction

The conductor shal compfy with the requirements of HD 363 Class 1 for sobd conductors and Class 2 for stranded conductors.

The conductors may be round or sector shaped.

The insulation shall consist of extruded crosslinked polyethylene applied around each conductor, complying with the rw-electrical requirements specified in Table 1 end the minimum insulation resistance requirements specified tn IEC 502.

The insulation thickness ehall comply with the specified values given in Table 3.

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

In multicore cables the cores shaN be cabled helically.

a tape may be applied over the cabled cores.3<3.4 Inner covering

In multiccre cables the cabled core shall ba covered by an extruded inner covering, which shal be composed of a compound based on unvulcanised rubber or plastic compound.

When an inner covering is applied there ehaM be no harmful an erection between its constituents and the insulation and/or sheath.

Compliance with this requirement shaN be checked by the test specified in sub-clause 8.1.4 of HD 505,1.2.

The extruded inner covering И any, shall surround the cores and may penetrate the space between them, giving the assembly a practically circular shape. The extruded inner covering shad not adhere to the core*.

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

3.3.5 Non-m«mU outer sMaih

The sheath shall consist of an extruded polyvinyl chloride compound of type TM 1_t applied around the core or Inner covering, complying with the non* electncal requirements given in Table I.

The sheath shal be extruded in a single layer.

The sheath shall not adhere to the insulation or inner covering. A separator, consisting of a tape or a film, may be placed under the sheath.

The sheath thickness shall comply with the specified values given in Table 3, column 5.

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.

Compkance shall be checked bv the test given in HD 21 Part 2 sub-clause 1.10.

3.3.64 Additional reoiaremants

The colour of the outer eheath shall be grey.

3.4 Tests

Compliance with the requirements cl Clausa 3-3 shal ba checked by inspection and by the teat specified in Table 1 and 2.

4- Ctfbtea with concentric conductor

Not applicableTable 1 - Requirement* for the non-aiecV»cal ta*t for cro*t4inked polyethylene 1XLPE) insulation and polyvinyl chloride IPVCI «heath

Ttblt 1 (continued^