---

(al The lowest recommended temperatures tor installation Shalt be 0°C but care should be taken to ensure that the cable temperature has been above 0^€C for the preceding 24 hours.

(bl Loaded cables, especially single core cables, may have surface temperatures which require protection against accidental contact.

The maximum pulling load shell not exceed the fottowrng values:

For copper conductors 50N/mm* of CSA For aluminium conductors 30W/mm“ of CSA

CSA refers only to the conductor! el

Where long lengths of cable are to be pulled along difficult routes, where tension increases sharply due to bends, cognizance shall be taken of the values for maximum side wall pressure (Tension divided by Bending Radius} recommended by the supplier.6,4 Bending radti

During installation. no cable shall be bent to a smaKer radius than those listed below:

(al Armoured circular copper conductor 6x0

(Ы All other cables 3x0

Where 0 = Tabulated over al diameter.

la) Thera shall be a significant measure of compatibility between the way in which cables are installed for the test for fire propagation and the actual installations,

2. There shall be compatibility between all Jointing materials and components of the cable.

3. Al bonds for earthing shall have adequate conductance, be as short and as straight as

possible and be protected a gainst corrosion, especially where dissimilar metals are involved.

5. Тцц after instafatnw

These are not mandatory, but when required, shall consist of:

fa)

QGd

j-Ofl cables

3600V between each conductor and between each conductor and metallic covering, The voltage shall be maintained for 15 minutes. Repeated de voltage test may damage the insulation.'BLANK PAGE

SECTION F i CABLES WITH COPPER OR ALUMINIUM CONDUCTORS EITHER SOLID OR STRANDED

CONTENTS

Рада

1. Scope &*R2

2. Additional general requirements

   1. Identification of cores 5F*2

   2. Thickness of inner covering 5*F*3

   3. Cable marking 5-F-3

2Л Additional test requirements 5«F*3

3. Cables without concentric conductor

3-і Code designation (Provisional] 5-F4

1. 1. Rated voltage CrRS

   2. Construction 5*F-5

   3. Testa 5-R6

2. (Not applicable! 6-F-6

Tables 1-3 5-F-7

Appendices: A; Guide to use 5*F*15

8. Current rating S-F-19

REFERENCES

References are made, in this Section F of Part 5 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 22 Rubber insulated cables of rated voltages up to and including 450/75OV

HD 186 Marking by inscription for the identification of cores of electric cables having more than five

cores

HO 383 Conductors of insulated cables (Endorsing IEC 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 602 Test on gases evolved during the combustion of materials from cables : Determination of

degree of acidity (corrosivity) of gases by measuring pH and conductivity

HD 605 Electric cables ; Additional test methods

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

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

IEC 502 Extruded solid dielectric insulated power cables for rated voltages from 1 kV to 30kV

IEC 7Б4-1 Test on gases evolved during combustion of electric cables ; Pan 1 : Determination of the

amount of halogen acid gas evolved during the combustion of polymeric materials taken from cables

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

SECTION F

1. . ScDDg

Thia section of the HD specifies requirements for and dimensions of single core and multi-core halogen* free cables with crosslinked polyethylene IXLPE) or crosslinked silicone rubber tQ) insulation and thermoplastic inner covering and sheath compound having reduced fire propagation performance. In a fire situation the cables further exhibit reduced smoke generation properties.

The cables considered are intended for use for fixed installations in buildings, in channels, in open a к or directly buried in the ground-

The cables are without concentric conductor.

The maximum continuous conductor temperature shall not exceed 90°С and 250°C during short-circuit for maximum one second-

This section covers the following classes of cables:

1. Single core cables having solid or stranded conductors, which when based upon copper may be tinned or plain depending upon type of inautating compound.

2. Multicore cables having solid or stranded conductors which when based upon copper may be tinned or plain depending upon type of insulating compound.

2. . Addition* funeral rtoutfwntntt

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

Each cable shall furthermore comply with the appropriate requirements given in IEC 602, HD 22.1 and HD 21.1.

The cores of up to and including five core cables shall be identified by colours in accordance with the below given order of rotation:

Seven core up to 40 core cables shaN have cores identified by number marking. The numbering •haO start with one in the inner layer and the arrangement shall comply with HD 1136 and shall be durable.

The minimum thickness of the extruded inner covering she! not be Ie» than the specified value for each type and tire ol cable shown in Table 3, by more than 0.1 mm ♦ 15% of the specified value. Compliance shall be checked by the test given in Sub-douse 2Л.2 of HD 605-

The method of cable marking shall comply with clause 3 of Part 1 of thia HD and the following requirements.

(П Manufacturer's identification XY2

(21 Code designation as stated In 3.1

□1 Number of cores and area of conductor

|4} Voltage designation IkV

15) Standard number HD504 5 F

46) Year of manufacture

The marking of Elements 1 -6 shall be by embossing or indenting or printing on the oversheath.

Compliarxe shall be checked by visual examination.

2.3.2 The mark of an Approval OrqyriHflon

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 ths symbolU) specified by the Approval Organisation.

As an alternative to the mark of the Approval Organisation on 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. Whore such marking is made it 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 conrbination of these methods. If the additional marking t* applied to the surface of the cable it shaN not render illegible the marking specified In Sub-of a use 2.3.1 2.3.2.

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

2.4 Additional last requirements

Make the measurement of thickness of insulation, extruded inner covering and oversheath listed 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.

tt any of the thicknesses measured does not comply with sub-clauses 3,3,2, 3,3.4 and 3.3,5 of this Pan, then two further samples shall be checked for the non-compiUmt hems. If both temples meet the «peeked requirement* the cable ■* deemed to comply, but If either does not meet the requirements the cable is deemed not to comply.

The measuring procedure is carried out according to HD 21.2 sub-clause 19.

Type approval for the complete range of cables specified for this type is obtained by carrying out the test given in tub-clause 4.1.6 of HD 60Б and HD 406.3,

When the cable sample is tested according to sub clause 4,1.6 of HD 605 the homing shall cease within 30 second* after removing the flame.

When a sample of the completed cable is tested in accordance with HD 606 it shall comply with the foHowing requirements;

1. cable Lght transmittance shad exceed 70%

2. cables Light transmittance shad exceed 60%

3. cables Light transmittance shad exceed 60%

N cables Light transmittance shaN exceed 50%

Th* non'metallic components used in the cable construction shall comply with ths requirement given in IEC 754-1 when tested in accordance with the method given in IEC 754-1,

The non-metal lie components used in Iha cable construction shall be tested according to method given in HD 602 and shall comply with the requirement given In HO 602,

The surface resistivity of the sheath of the cable shall be tested according to and comply with the requirement given in HD22 Pan 1₁ clause 7,

3. Cable* without concentric conductor

   1. Code designation (Provisional!

(Under consideration by TC20I

For cables with XLPE-insulation

• PVIK-LS-HF for cables up to and including 6mm*

• PVIKS LS-HF

F

- PVIKJ-LS-HF

■ PVIKSJ-LS-HF

for cables with a yellow/green core

or cables with silicone rubber insulation:

• BSK

• BSKJ for cables with a yellow/groen core

0.6/1 kV

The conductors shall comply with the requirements of HD 383 Dass 1 for solid conductors and Class 2 for stranded conductors.

The conductors may be plain copper or tinned copper or aluminium.

The insulation shall consist of extruded crosslinked polyethylene (XLPE1 or crosslinked silicone rubber (Oh applied around each conductor, complying with the non electncal requirements specified in Table 1A and the minimum insulation resistance requirements specified in IEC 502.

The insulation thickness shall comply with the specified values given in Table 3 up to and including five core cables. Above five core cables the specified values stated in IEC 502 shall be used for 0.6/1 kV cables.

However, the thickness at any place may be less than the specified value provided that the difference does not exceed 0 J mm + 10% of the specified value.

In mufthcore cables the cores shall be cabled helically.

A tape may be applied over the cabled cores.

33 4 Inner covering

The corals) shaI be covered by an extruded inner covering.

There shall be no harmful interaction between its constituents and ths insulation and/or sheath.

Compliance with this requtroment shad be checked by the test specified in sub-clause 8.1.4 of HD 505.1.2«

3 3.4,2 Application

The extruded inner covering shall surround the core[&) and may in mufti-core cables penetrate the space between them, giving the assembly a practically circular shape. The extruded inner covering shaN not adhere to the cores.

334.3 Inner cove ri no thckness

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

3.3.5 Non-meielic oversheath

3,35.1 Material

The sheath shall consist of an extruded halogen-free flame retarded compound applied around the covering, complying with the nonelectrical requirements given in Table IB.

3.3.5.2 AdqI cation

The sheath shall be extruded in a single layer.

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

3.3. Б.З Sheath thickness

The sheath 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 * 15% of the specified value.

Compliance shall be checked by the test given In HD 21 Pan 2_f sub­clause 1.10,

3.3.5.4 Additional requirements

The colour of the outer sheath shall be grey or any colour agreed upon.

3.4 Testa

Compliance with the requirements of sub-clause 3,3 shall be choked by inspection end by the tests specified In Table 1A, IB and 2.

4. Cables with concentric conductor

Not appbcabfeTable 1A - Requirements for the non-electrical test for crosslinked polyethylene {XLPEI and crois-liriked eiicone rubber IQ) insulation