SIST HD 604 S1:1998/A3:2005

0,6/1 kV and 1,9/3,3 kV power cables with special fire performance for use in power stations

Starkstromkabel mit besonderen Eigenschaften im Falle eines Brandes für Kraftwerke und einer Nennspannung von 0,6/1 kV und 1,9/3,3 kV

Câbles d'énergie 0,6/1 kV et 1,9/3,3 kV ayant un comportement au feu particulier et destinés aux centrales électriques

Elektroenergetski kabli za napetosti 0,6/1 kV in 1,9/3,3 kV s posebnimi ognjevzdržnimi lastnostmi za uporabo v elektrarnah

General Information

• Status: Published
• Publication Date: 30-Nov-2005
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.060.20 - Cables
• Technical Committee: IEKA - Electric cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2005
• Due Date: 01-Dec-2005
• Completion Date: 01-Dec-2005
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: HD 604 S1:1994/A3:2005 - 0,6/1 kV and 1,9/3,3 kV power cables with special fire performance for use in power stations

Relations

• Amends: SIST HD 604 S1:1998 - 0,6/1 kV and 1,9/3,3 kV power cables with special fire performance for use in power stations
• Effective Date: 01-Dec-2005
• Revised: oSIST prHD 604-S2:2021 - 0,6/1,0 kV power cables with special fire performance for use in power stations and similar installations
• Effective Date: 24-Sep-2019

Overview

HD 604 S1:1994/A3:2005 (CENELEC) is a harmonized European document for 0,6/1 kV and 1,9/3,3 kV power cables with special fire performance for use in power stations. Amendment A3 (2005) updates Part 1 - General requirements - and clarifies cross‑references. The standard covers fixed installation cables (rigid and flexible conductors) intended primarily for power generating plants and substations, specifying construction, marking, core identification and mandatory fire‑performance testing. Cables for nuclear containment (LOCA) or radiation‑resistant designs are explicitly excluded.

Key topics and technical requirements

• Rated voltages: 0,6/1,0 kV and 1,9/3,3 kV cables.
• Insulation and sheath types: thermoplastic (e.g., PVC), thermosetting (e.g., XLPE, EPR), halogenated or halogen‑free compounds.
• Cable constructions: single‑core and multicore power and control cables (control cables included from 1 mm² conductor size up to 61 cores). Sections cover conductors, insulation, fillers, bedding, inner sheath, metallic coverings, oversheath and non‑metallic components for halogen‑free types.
• Fire performance: Special fire behavior requirements applying to materials and completed cables (flame propagation, smoke, corrosivity, toxic emissions).
• Marking and identification: Requirements for origin, additional marking, durability and legibility; core identification rules referenced.
• Testing and conformity: Type, sample and routine tests referenced. Test methods are specified via related standards (see Related Standards).
• Guidance: Part 1 contains a guide for selection and use of cables in power stations.

Practical applications and users

Who uses HD 604 S1:1994/A3:2005:

• Cable manufacturers designing and certifying power station cables to meet harmonized fire‑performance criteria.
• Specifiers, procurement and OEMs selecting cables for power plants, substations and critical electrical installations.
• Power station electrical engineers and asset owners seeking compliant cabling solutions for safe operation under fire conditions.
• Test laboratories and conformity assessors performing EN/IEC referenced fire and material tests.
• Installers and contractors ensuring correct marking, core identification and adherence to installation requirements.

Practical value:

• Ensures safer, more reliable cable performance in fire scenarios in power generation environments.
• Provides a common technical language for procurement, testing and national standard implementation across CENELEC members.

Related standards (selected)

Standards referenced in Part 1 include:

• EN 50266, EN 50267, EN 50268 (cable fire test methods: flame, gases, smoke)
• EN 60332‑1 series (vertical flame propagation tests)
• EN 60811 series (insulating and sheathing material tests)
• EN 60228 (conductors)
• HD 21 / HD 22 series (cable construction basics)
• HD 605 S2, IEC 60096‑1

For procurement or technical specification, cite HD 604 S1:1994/A3:2005 together with the applicable particular part (Parts 3–5) to capture construction‑specific requirements.

Standards Content (Sample)

SLOVENSKI SIST HD 604 S1:1998/A3:2005

STANDARD
december 2005
Elektroenergetski kabli za napetosti 0,6/1 kV in 1,9/3,3 kV s posebnimi
ognjevzdržnimi lastnostmi za uporabo v elektrarnah
0.6/1 kV and 1,9/3,3 kV power cables with special fire performance for use in power
stations
ICS 29.060.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

HARMONIZATION DOCUMENT HD 604 S1/A3
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT October 2005

ICS 29.060.20; 13.220.40
English version
0,6/1 kV and 1,9/3,3 kV power cables with special fire performance
for use in power stations
Câbles d'énergie 0,6/1 kV et 1,9/3,3 kV Starkstromkabel mit besonderen
ayant un comportement au feu particulier Eigenschaften im Falle eines Brandes
et destinés aux centrales électriques für Kraftwerke und einer Nennspannung
von 0,6/1 kV und 1,9/3,3 kV
This amendment A3 modifies the Harmonization Document HD 604 S1:1994; it was approved by
CENELEC on 2005-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for implementation of this amendment on a national level.

Up-to-date lists and bibliographical references concerning such national implementation may be obtained on
application to the Central Secretariat or to any CENELEC member.

This amendment exists in one official version (English).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. HD 604 S1:1994/A3:2005 E

Page 0-2
Foreword
This amendment to the Harmonization Document HD 604 S1:1994 was prepared by WG 9 of the
Technical Committee CENELEC TC 20, Electric Cables. As confirmed by CENELEC TC 20 at its
Setubal meeting (June 2004), it was submitted to the Unique Acceptance Procedure.

Users of HD 604 should note that, in the particular sections, cross-references have only been
updated where the complete section has been re-issued. This Part 0 of HD 604 contains a list of
relevant changes to cross-references, which should be consulted in conjunction with the particular
section. National standards implementing one or more particular sections of HD 604 may update
cross-references in advance of changes to the published version of the HD.

The text of the draft was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as amendment A3 to HD 604 S1 on 2005-06-01.

By decision of the Technical Board (D81/139 extended by D104/118 & D114/076) this HD exists only
in English.
The following dates were fixed:

– latest date by which the existence of the amendment
has to be announced at national level (doa) 2005-12-01
– latest date by which the amendment has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2006-06-01

– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2008-06-01

Page 0-3
CONTENTS
(HD 604 S1:1994 plus A1, A2 and A3)

1), 5), 7)
PART 1 General requirements
PART 3 Single core and multicore PVC insulated and sheathed cables

3-A Cables with copper and aluminium concentric conductors
1)
3-B Cables with copper or aluminium conductors, with or without metallic armour or screen
1), 7)
3-C Cables with circular copper conductors, with or without metallic covering
1), 5), 7)
3-D Cables with copper or aluminium round or sector-shaped conductors and a concentric
conductor
2), 6)
3-E Cables with copper or aluminium conductors and wire or strip armour
3-F Cables with additional or amended requirements for oxygen index testing of materials

PART 4 Single core and multicore XLPE or EPR insulated, PVC or chlorinated elastomer sheathed
cables
4-A Cables with copper and aluminium solid or stranded conductors
1)
4-B Cables with copper or aluminium conductors and tape armour
1), 7)
4-C Cables without metallic covering, having circular copper conductors
1), 5), 6)
4-D Cables with copper and aluminium conductors; unarmoured, armoured or double-screened
2), 6)
4-E Cables with copper and aluminium conductors, and wire or strip armour
4-F Cables with additional or amended requirements for oxygen index testing of materials
8)
4-G Cables with copper conductors; unarmoured or armoured

PART 5 Single core and multicore halogen free cables

1)
5-A Cables with copper or aluminium conductors with or without metallic covering or screen
1), 7)
5-B Unarmoured cables with copper conductors
1), 5), 6)
5-C Cables with copper or aluminium conductors: unarmoured, armoured or double screened
5-D Cables with copper and aluminium conductors and a metallic covering
2), 6)
5-E Cables with copper or aluminium conductors and wire armour
5-F Cables with copper or aluminium conductors either solid or stranded
1), 5), 6)
5-G Cables with copper conductors and optional copper concentric conductor
1), 7)
5-H Cables with copper conductors, with and without concentric copper conductors, and with
optional armouring
4), 7)
5-I  One to four core cables having aluminium or copper conductors
5-J Cables with additional or amended requirements for oxygen index testing of materials
3), 7)
5-K Cables with copper or aluminium conductors and with or without concentric copper
conductor or screen
8)
5-L  Cables with copper conductors; unarmoured or armoured

1)
Amendment no. 1 introduces some changes to the text.
2)
Amendment no. 1 completely revises the particular section.
3)
New section introduced by Amendment no. 1.
4)
Amendment no. 2 introduces some changes to the text.
5)
Amendment no. 2 completely revises the particular part or section.
6)
Amendment no. 3 introduces some changes to the text.
7)
Amendment no. 3 completely revises the particular part or section.
8)
New section introduced by Amendment no. 3

Page 0-4
List of updated cross-references
Original ref Original title New ref New title
HD 186 Marking by inscription for the identification of EN 50334 Marking by inscription for the identification of cores
cores of electric cables having more than 5 of electric cables
cores
HD 383 Conductors of electric cables EN 60228 Conductors of electric cables
HD 405.1 Tests on electric cables under fire conditions EN 60332-1-2 Tests on electric and optical fibre cables under fire
Part 1: Test on a single vertical insulated wire or conditions – Part 1-2: Test for vertical flame
cable propagation for a single insulated wire or cable –
Procedure for 1 kW pre-mixed flame
HD 405.3 Tests on electric cables under fire conditions EN 50266 series Common test methods for cables under fire
Part 3: Tests on bunched wires or cables conditions – Test for vertical flame spread of
vertically-mounted bunched wires or cables
HD 505 series Common test methods for insulating and EN 60811 series Insulating and sheathing materials of electric and
sheathing materials of electric cables optical cables – Common test methods
(IEC 60811 series)
HD 602 Test on gases evolved during combustion of EN 50267-2-2 Common test methods for cables under fire
materials from cables – Determination of degree conditions – Test on gases evolved during
of acidity (corrosivity) of gases by measuring pH combustion of materials from cables
and conductivity Part 2-2: Procedures – Determination of degree of
acidity of gases for materials by measuring pH and
conductivity
HD 606 series Measurement of smoke density of electric EN 50268 series Common test methods for cables under fire
cables burning under defined conditions conditions – Measurement of smoke density of
cables burning under defined conditions
EN 50265-2-1 Common test methods for cables under fire EN 60332-1-2 Tests on electric and optical fibre cables under fire
conditions – Test for resistance to vertical flame conditions - Part 1-2: Test for vertical flame
propagation for a single insulated conductor or propagation for a single insulated wire or cable –
cable Procedure for 1 kW pre-mixed flame
Part 2-1: Procedures – 1 kW pre-mixed flame
IEC 60502 Extruded solid dielectric insulated power cables IEC 60502-1 Power cables with extruded insulation and their
for rated voltages from 1 kV to 30 kV accessories for rated voltages from 1 kV
(U = 1,2 kV) up to 30 kV (U = 36 kV)
m m
Part 1: Cables for rated voltages of 1 kV
(U = 1,2 kV) and 3 kV (U = 3,6 kV)
m m
IEC 60754-1 Test on gases evolved during combustion of EN 50267-2-1 Common test methods for cables under fire
electric cables conditions – Tests on gases evolved during
Part 1: determination of the amount of halogen combustion of materials from cables
acid gas evolved during the combustion of Part 2-1: Procedures – Determination of the
polymeric materials taken from cables amount of halogen acid gas

Page 1-0
Part 1
PART 1: GENERAL REQUIREMENTS
Replace the complete part by the following.

Page 1-1
Part 1
0,6/1 kV AND 1,9/3,3 kV POWER CABLES WITH SPECIAL FIRE PERFORMANCE
FOR USE IN POWER STATIONS
PART 1: GENERAL REQUIREMENTS
Page 1-2
Part 1
REFERENCES
References are made in this Part 1, and in other parts of HD 604, to other CENELEC standards, Harmonization
Documents and International Standards as follows:

EN 50266 series Common test methods for cables under fire conditions – Test for vertical flame
spread of vertically-mounted bunched wires or cables
EN 50267 series Common test methods for cables under fire conditions - Tests on gases evolved
during combustion of materials from cables
EN 50268 series Common test methods for cables under fire conditions - Measurement of smoke
density of cables burning under defined conditions
EN 50334 Marking by inscription for the identification of cores of electric cables
EN 60228 Conductors of insulated cables
Tests on electric and optical fibre cables under fire conditions - Part 1: Test for
EN 60332-1 series
vertical flame propagation for a single insulated wire or cable
EN 60811 series Insulating and sheathing materials of electric and optical cables – Common test
methods (IEC 60811 series)
HD 21 series Cables of rated voltages up to and including 450/750 V and having thermoplastic
insulation
HD 22 series Cables of rated voltages up to and including 450/750 V and having crosslinked
insulation
HD 308 S2:2001 Identification of cores in cables and flexible cords
HD 605 S2 Electric cables – Additional test methods
IEC 60096-1 Radio-frequency cables - Part 1: General requirements and measuring methods

Page 1-3
Part 1
CONTENTS
1 General. 4
1.1 Scope. 4
1.2 Object. 4
2 Definitions . 4
2.1 Definitions relating to insulating and sheathing compounds. 4
2.2 Definitions relating to the tests. 5
2.3 Rated voltage. 5
3 Marking. 5
3.1 Indication of origin . 5
3.2 Additional marking. 6
3.3 Durability. 6
3.4 Legibility. 6
3.5 Common marking. 6
3.6 Use of the name CENELEC.6
4 Core identification . 6
5 General requirements for the construction of cables . 7
5.1 Conductors. 7
5.2 Insulation. 7
5.3 Fillers and tapes. 8
5.4 Inner covering (bedding) . 8
5.5 Inner sheath. 8
5.6 Metallic coverings. 9
5.7 Oversheath. 9
5.8 Non-metallic components of halogen free cables . 9
6 Tests on complete cables. 9
7 (spare). 10
8 (spare). 10
9 Guide to use and selection of cables . 10

Page 1-4
Part 1
0,6/1,0 kV and 1,9/3,3 kV power cables with special fire performance
for use in power stations
Part 1 - General requirements
1 General
1.1 Scope
HD 604 applies to rigid and flexible conductor cables for fixed installations having a rated voltage U /U of
o
0,6/1,0 kV or 1,9/3,3 kV. The insulation and sheaths may be either thermoplastic or thermosetting, halogenated
or halogen free. The cables are mainly intended for use in power generating plants and sub-stations. All cables
have specific fire performance requirements. Cables designed to be installed within the containment area of
nuclear power plants (LOCA cables), or cables specifically designed to be radiation resistant are not included in
this HD.
Control cables having a minimum conductor size of 1 mm² up to 61 cores are included in addition to the range
of power supply cables.
This Part 1 specifies the General requirements applicable to these cables; additional or deviating requirements
are given in the particular sections of this HD.

Test methods are specified in EN 50266, EN 50267, EN 50268, EN 60811, HD 21, HD 22, EN 60228,
EN 60332-1, HD 605 and IEC 60096-1.

The particular types of cables are specified in Parts 3, 4 and 5.
1.2 Object
The objects of this Harmonization Document are:

- to standardise cables that are safe and reliable when properly used, in relation to the technical
requirements of the system of which they form a part;
- to state the characteristics and manufacturing requirements directly or indirectly bearing on safety,
- and to specify methods for checking conformity with those requirements.
2 Definitions
2.1 Definitions relating to insulating and sheathing compounds
2.1.1 Insulating and sheathing compounds
The types of insulating and sheathing compounds covered in this HD are listed below, together with their
abbreviated designations.
2.1.1.1 Thermoplastic Polyvinyl Chloride compound (PVC)
Combinations of materials suitably selected, proportioned and treated, of which the characteristic constituent is
polyvinyl chloride or one of its copolymers. The same term also designates compounds containing both
polyvinyl chloride and certain of its copolymers.
2.1.1.2 Cross-linked Ethylene Propylene Rubber (EPR)
A compound based on ethylene propylene rubber or similar (EPM or EPDM) which when cross-linked complies
with the requirements given in the particular sections.
2.1.1.3 Cross-linked Polyethylene (XLPE)
A thermosetting material formed by the cross-linking of thermoplastic polyethylene compound either by
chemical or irradiation methods so as to comply with the requirements given in the particular sections.
2.1.1.4 Ethylene copolymers
Thermoplastic or cross-linked materials in which the characteristic constituent is a copolymer of ethylene such
as EVA, EEA, EMA, compounded so as to comply with the requirements given in the particular sections.

Page 1-5
Part 1
2.1.1.5 Chlorinated synthetic elastomeric compound
A vulcanised compound in which the characteristic constituent is polychloroprene rubber (PCP) or other
chlorinated synthetic elastomer, such as CSP, CPE or NBR/PVC, compounded so as to comply with the
requirements given in the particular sections.

NOTE  The abbreviations PCP, CSP and CPE are those in common use. Equivalent codings according to ASTM are CR, CSM and CM.
2.2.1 Type of compound
The category in which a compound is placed according to its properties, is determined by specific tests. The
type designation is not directly related to the composition of the compound.
2.2 Definitions relating to the tests
NOTE  Tests classified as Sample (S) or Routine (R) may be required as part of any Type Approval Schemes.
2.2.1 Type tests (Symbol T)
Tests required to be made before supplying a type of cable covered by this HD on a general commercial basis
in order to demonstrate satisfactory performance characteristics to meet the intended application. These tests
are of such a nature that, after they have been made, they need not be repeated unless changes are made in
the cable material, design or type of manufacturing process which might change the performance
characteristics.
2.2.2 Sample tests (Symbol S)
Tests made on selected lengths of completed cable, on samples of completed cable, or components taken
from a completed cable adequate to verify that the finished product meets the design specifications.
2.2.3 Routine test (Symbol R)
Tests made on all production cable lengths to demonstrate their integrity.
2.2.4 Tests after installation
Tests intended to demonstrate the integrity of the cable and its accessories as installed.
2.3 Rated voltage
The rated voltage of a cable is the reference voltage for which the cable is designed, and which serves to
define the electrical tests.
The rated voltage is expressed by the combination of the following values U /U (U ) expressed in kV:
o m
− U is the r.m.s value between any insulated conductor and earth (metallic covering of the cable or the
o
surrounding medium); U = 0,6 kV or 1,9 kV;
o
− U is the r.m.s. value between any two phase -conductors of a multicore cable or of a system of single-core
cables;  U = 1,0 kV or 3,3 kV;
− U is the maximum r.m.s. value of the highest system voltage for which the equipment may be used;
m
U = 1,2 kV or 3,6 kV.
m
In an alternating current system, the rated voltage of a cable shall be at least equal to the nominal voltage of
the system for which it is intended.

If used in d.c. systems, the 0,6/1,0 kV cables of this HD shall have a maximum voltage against earth not
exceeding 1,9 kV.
NOTE  The suitability of cables rated 1,9/3,3 kV for use in d.c. systems should be confirmed with the manufacturer before installation.
3 Marking
3.1 Indication of origin
Cables shall be provided with an identification of origin consisting of:

2. Either the manufacturer's identification thread, or

3. The continuous marking of the manufacturer's name or trademark, or (if legally protected) identification
number by one of the three following methods:

Page 1-6
Part 1
a) printed tape within the cable;
b) printing in a contrasting colour on the insulation of at least one core;
c) printing, indenting or embossing on the outer surface of the cable.
3.1.1 Continuity of marks
Unless otherwise specified in the particular section, each specified mark shall be regarded as continuous if the
distance between the end of the mark and the beginning of the next identical mark does not exceed:

550 mm if the marking is on the outer surface of the cable.

275 mm if the marking is
i) on the insulation of a sheathed cable
ii) on a tape within a sheathed cable
NOTE A "Specified Mark" is any mandatory mark covered by this Part of the HD or by the particular requirements of Part 3 onwards
of this HD.
The diagram below shows an example of the marking as used on the outer surface of the cable, where the
word "ORIGIN" is for the mandatory information required for 3.1, and "XYZ" is one of any other mandatory
marks.
3.2 Additional marking
Additional marking requirements may be specified in the particular sections.
3.3 Durability
Printed markings shall be durable. Compliance with this requirement shall be checked by the test given in
Subclause 2.5.4 of HD 605.
The printed legend shall be legible after carrying out the test.
3.4 Legibility
All markings shall be legible. Printed markings shall be in contrasting colours.

All colours of the identification thread shall be easy to recognise or easily be made recognisable, if necessary,
by cleaning with a suitable solvent.
3.5 Common marking
Under consideration.
3.6 Use of the name CENELEC
The name CENELEC, in full or abbreviated, shall not be directly marked on, or in, the cables.
4 Core identification
The cores shall be identified by colours or numbers when specified in the particular sections. Colouring shall be
achieved by the use of coloured insulation or by a coloured surface.

If the core identification is by colours it shall comply with HD 308 S2, unless otherwise specified in the particular
sections.
When identification is by numbers, they shall be printed in a colour which contrasts with the core colours.

Marking shall comply with EN 50334 unless otherwise specified.

Page 1-7
Part 1
The colours shall be clearly identifiable and durable. Durability shall be checked by the test given in
Subclause 2.5.4 of HD 605.
Compliance with these requirements shall be verified by visual examination.

5 General requirements for the construction of cables
5.1 Conductors
5.1.1 Material
Conductors shall be either plain or metal-coated annealed copper or plain aluminium in accordance with
EN 60228, and with particular requirements in particular sections.
5.1.2 Construction
The maximum diameters of the wires of flexible conductors, and the minimum number of the wires of rigid
conductors, shall be in accordance with EN 60228, unless otherwise specified in the particular sections.

The classes of the conductors relevant to the various types of cables are given in the particular sections.
Conductors shall be either circular or sector in shape, and of solid metal or stranded.
5.1.3 Check of construction
Compliance with the requirements of 5.1.1 and 5.1.2 including the requirements of EN 60228, shall be checked
by inspection and by measurement.
5.1.4 Electrical resistance
The resistance of each conductor at 20 °C shall be in accordance with the requirements of EN 60228 for the
given class of conductor.
Compliance shall be checked by the test given in Subclause 3.1.1 of HD 605.
5.1.5 Separator layer
A separator layer may be placed between the conductor and insulation. Unless otherwise specified, it shall
be non-hygroscopic.
It shall be easily removable from the conductor.
5.2 Insulation
5.2.1 Material
The insulation shall 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 temperature for each
insulation are specified in the particular sections.
5.2.2 Application
The insulation may consist of one or more bonded layers. It shall be so applied that it fits closely on the
conductor or over the separator tape, and it shall be possible to remove it without damage to the insulation
itself, 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 shall 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 value 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 difference
does not exceed 0,1 mm + 10 % of the specified value.

Compliance shall be checked by the test given in Subclause 2.1.1 of HD 605.

Page 1-8
Part 1
5.3 Fillers and tapes
For each type of cable, the particular sections specify whether that cable includes fillers or tapes or whether
the sheath or inner covering may penetrate between the cores, thus forming a filling.

Tapes may be applied as separators over the insulation of an individual core or as a binder over the core
assembly.
5.3.1 Material
The fillers and tapes, if any, shall be composed of a suitable material.

When fillers or tapes are employed, there shall be no harmful interactions between their constituents and the
insulation and/or the sheath.
Compliance with this requirement shall be checked by the test specified in the particular section.
5.3.2 Application
Where fillers are used these may be applied either separately or as part of the inner covering or the inner
sheath to form a compact and reasonably circular cable. It shall be possible to strip the fillers, if any, from the
cable without damaging the insulation of cores.
5.4 Inner covering (bedding)
The inner covering, if any, may be extruded or lapped or a combination of the two.
5.4.1 Material
The material used for inner coverings 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.

Compliance with this requirement shall be checked by the test specified in the 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 inner covering shall be easily
separable from the cores.
Lapped beddings shall consist of one or more layers of tape 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 bedding or a combination of these.
5.4.3 Thickness
Unless otherwise stated in the particular sections no measurement is required for the extruded or lapped
inner covering.
5.5 Inner sheath
An inner sheath may be specified in the particular sections.
5.5.1 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 test 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. The sheath shall not adhere to the cores.
5.5.3 Thickness
The thickness of the extruded inner sheath shall be as specified in the particular sections.

Page 1-9
Part 1
5.6 Metallic coverings
5.6.1 Type of metallic layers
The following types of metallic layers may be specified in particular sections:

a) metallic screen
b) concentric conductor
c) metallic armour
d) a combination of the above
Detailed constructions of metallic coverings, together with test methods and requirements, are specified in
the particular sections.
5.6.2 Application
The metallic layers may be applied over an inner covering or inner sheath, as specified in the particular
sections.
5.7 Oversheath
5.7.1 Material
The oversheath shall be a compound suitable for use at the maximum conductor temperature of the 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
sections.
5.7.2 Application
The oversheath shall be extruded and may consist of one or more layers.

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

A separator, consisting of a film or tape, may be placed under the oversheath.
5.7.3 Thickness
Unless otherwise specified in the particular section the following requirements shall apply.
5.7.3.1 Sheath applied over smooth surface
For a sheath applied on a smooth cylindrical 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 type and size of cable shown in the tables of the particular section.

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.

Test methods are specified in Subclause 2.1.2 of HD 605.
5.7.3.2 Sheath applied over uneven surface
For a sheath applied on an irregular cylindrical surface, such as a penetrating sheath on an unarmoured
cable without inner covering or a sheath applied directly over armour, metallic screen or concentric
conductor, the smallest thickness at any point of the oversheath shall not fall below the value given in the
appropriate particular sections by more than 0,2 mm + 20 % of the specified value.

Test methods are specified in Subclause 2.1.2 of HD 605.
5.8 Non-metallic components of halogen free cables
All non-metallic components shall be halogen free. This shall be checked by one of the tests specified in
EN 50267 unless otherwise specified in the particular section.
6 Tests on complete cables
All cables shall comply with the requirements given in the particular sections.

Page 1-10
Part 1
7 (spare)
8 (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, e.g.
climatic conditions or installation requirements, may exist. These should therefore be followed in conjunction
with this HD.
Page 3-C-0
Part 3 Section C
SECTION 3-C: CABLES WITH CIRCULAR COPPER CONDUCTORS
WITH OR WITHOUT METALLIC COVERING

Replace the complete section by the following.

Page 3-C-1
Part 3 Section C
SECTION C: CABLES WITH CIRCULAR COPPER CONDUCTORS
WITH OR WITHOUT METALLIC COVERING

CONTENTS
1 Scope.3
2 Additional general requirements .3
2.1 Identification of cores .3
2.2 Cable marking.3
2.2.1 External marking.4
2.3 Additional test requirements .4
2.3.1 Sampling for special sample tests .4
2.3.2 Measurement of cable dimensions.6
2.3.3 Bend test an complete cable .7
2.3.4 Voltage test on complete cable .7
2.3.5 Insulation resistance test .7
2.3.6 Compatibility test .8
2.3.7 Fire propagation test on bunched cables .8
3 Cables without metallic covering .9
3.1 Code designation .9
3.2 Rated voltage.9
3.3 Construction.9
3.3.1 Conductor.9
3.3.2 Insulation.9
3.3.3 Inner covering.9
3.3.4 Oversheath.9
3.4 Tests.9
4 Cables with metallic covering.10
4.1 Code designation .10
4.2 Rated voltage.10
4.3 Construction.10
4.3.1 Conductor.10
4.3.2 Insulation.10
4.3.3 Inner covering.10
4.3.4 Metallic covering (screen).10
4.3.5 Oversheath.10
4.4 Tests.11
Appendix - Guide to use.22

Page 3-C-2
Part 3 Section C
REFERENCES
References are made, in this Section C of Part 3 of HD 604, to other Parts of this HD and to
other Harmonization Documents and International Standards as follows:
EN 50267-2-1 Common test methods for cables under fire conditions – Tests on gases
evolved during combustion of material from cables – Part 2-1: Procedures –
Determination of the amount of halogen acid gas
EN 50334 Marking by inscription for the identification of cores of electric cables
EN 60228 Conductors of insulated cables
EN 60332-1-2 Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test
for vertical flame propagation for a single insulated wire or cable – Procedure
for 1 kW pre-mixed flame
EN 60811 Common test methods for insulating and sheathing materials of electric cables
HD 308 Identification of cores in cables and flexible cords
HD 605 Electric cables - Additional test methods
ISO 2859 Sampling procedures for inspection by attributes
In all cases reference to another HD or International Standard implies the latest edition of that
document.
Page 3-C-3
Part 3 Section C
SECTION 3-C
1 Scope
This section specifies requirements for and dimensions of single-core and multi-core PVC
insulated and sheathed cables having reduced fire propagation performance.
The maximum continuous conductor temperature shall not exceed 70 °C. The maximum
temperature for short-circuit condition is 160 °C (for max. 5 s).
This section covers the following types of cable:
(i) single core cables having circular plain annealed copper conductor, insulated,
without metallic covering and sheathed,
(ii) 2, 3, 4, 5,7,10,12,16,19 and 24 cores cables having circular plain annealed copper
conductor, insulated, without metallic covering and sheathed,
(iii) 2, 3, 4, 5, 7,10,12,16,19 and 24 cores cables having circular plain annealed copper
conductor, insulated, with metallic covering and sheathed.
2 Additional general requirements
The following general requirements shall be read in conjunction with those given in Part 1.
2.1 Identification of cores
The cores of all cables shall be identified as fallows:
For single core cables with whichever mono colour, except for the protection core that shall
be green-yellow.
For multicore cables up to and including 5 cores, according HD 308 S2.
For cables having 2 black cores, these must be identified by their position with respect to the
non black cores.
For cables having 5 or more cores, these shall be identified as follow: with the exception of
any green-and-yellow earth core, which if included shall be placed in the outer layer, all cores
in the cable shall be marked b y inscription according to EN 50334. The base colour shall be
black and the inscription colour shall be white or yellow.
2.2 Cable marking
The method of cable marking shall comply with Clause 3 of Part 1 and the following additional
requirements.
Page 3-C-4
Part 3 Section C
2.2.1 External marking
The external surface of all cables shall also bare a legibly marked as follows:
(a) cables without metallic covering
N1VV-K 1 x cross-section or
N1VV-K n x cross-section or
N1VV-R n x cross-section.
(b) cables with metallic covering
N1VC7V-K n x cross-section or
N1VC7V-R n x cross-section.
The marking shall be along one or more lines, and in the latter case approximately equally
spaced around the circumference.
A meter marking in form of sequential marking may be provided on the surface of the cable to
enable an approximate determination of any drum length.
The space between the end of one marking and the beginning of the next one shall be as
from Part 1, Clause 3 but if a meter marking is applied then the clearance between adjacent
marks may be increased up to 1 000 mm.
The printing shall be in a colour which contrasts with the oversheath colour.
Compliance shall be checked by visual examination and measurement according to Table 3.
2.3 Additional test requirements
2.3.1 Sampling for special sample tests
The acceptance tests are gathered in the "routine" and "sample" tests lists.
1. Type tests
The type tests can be carried out by a Certification Body and, in this case, the manufacturer
can mark the cable with the relevant CB marking. Alternatively, the tests can be carried out in
the manufacturer's laboratories (supervised by a customer's representative) or in an
independent laboratory.
A declaration of conformity to the type tests by a recognised Certification Body can avoid the
repetition of the tests.
To verify the conformity of the product to the relevant requirements, by agreement between
manufacturer and customer, type tests can be totally or partially repeated, in the
manufacturer's laboratories or in an another laboratory, agreed by customer and
manufacturer.
In this case the tests shall be repeated on cable lengths only chosen in a lot.
Tests carried out on samples taken away from this cable length shall give positive result.

Page 3-C-5
Part 3 Section C
2. Acceptance tests
By agreement between manufacturer and customer, the acceptance tests are carried out in
the manufacturer's laboratories, which must be suitably equipped.
When the customer does not specify the tests in the order, or when he does not ask to carry
out the tests, the manufacturer shall certify to the customer that all tests have been
successfully passed during cable manufacturing.
When the cable is allowed to be marketed by the CB marking, the acceptance tests can be
totally avoided.
During the acceptance tests, the compliance with the cable requirements shall be verified,
unless otherwise specified, by a statistical control by attributes according to ISO 2859
standards, with the following notes:
(a) Sampling plan: single plan reduced inspection with AQL = 2,5% to define the number
of samples from each lot; reference to level
...