HD 21.15 S1:2006

SLOVENSKI STANDARD
01-december-2006
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Cables of rated voltages up to and including 450/750 V and having thermoplastic
insulation - Part 15: Single core cables, insulated with halogen-free thermoplastic
compound, for fixed wiring
Starkstromleitungen mit thermoplastischer Isolierhülle fur Nennspannungen bis 450/750
V - Teil 15: Halogenfreie Aderleitungen mit thermoplastischen Werkstoffen für feste
Verlegung
Conducteurs et câbles isolés avec des matériaux thermoplastiques de tension assignée
au plus égale a 450/750 V - Partie 15: Monoconducteurs pour installation fixe, isolés
avec un mélange thermoplastique sans halogene
Ta slovenski standard je istoveten z: HD 21.15 S1:2006
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT
HD 21.15 S1
DOCUMENT D'HARMONISATION
September 2006
HARMONISIERUNGSDOKUMENT
ICS 29.060.20
English version
Cables of rated voltages up to and including 450/750 V
and having thermoplastic insulation
Part 15: Single core cables, insulated with halogen-free thermoplastic
compound, for fixed wiring
Conducteurs et câbles isolés avec des Starkstromleitungen mit thermoplastischer
matériaux thermoplastiques de tension Isolierhülle mit Nennspannungen bis
assignée au plus égale à 450/750 V 450/750 V
Partie 15: Monoconducteurs pour Teil 15: Halogenfreie Aderleitungen mit
installation fixe, isolés avec un mélange thermoplastischen Werkstoffen für feste
thermoplastique sans halogène Verlegung

This Harmonization Document was approved by CENELEC on 2006-09-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this
Harmonization Document at national level.

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

This Harmonization Document exists in three official versions (English, French, German).

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

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 21.15 S1:2006 E
Foreword
This Harmonization Document was prepared by the Technical Committee CENELEC TC 20,
Electric cables, from Vilamoura Notification BT(ES/NOT)5 and introduces a range of single
core cables equivalent to those in HD 21.3 but with halogen-free thermoplastic insulation. The
text of the draft was submitted to the formal vote and was approved by CENELEC as
HD 21.15 S1 on 2006-09-01 without any modification.
The following dates were fixed:
– latest date by which the existence of the HD
has to be announced at national level (doa) 2007-03-01
– latest date by which the HD has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2007-09-01
– latest date by which the national standards conflicting
with the HD have to be withdrawn (dow) 2008-09-01
HD 21 has the following parts:
HD 21.1 S4 General requirements
HD 21.2 S3 Test methods
HD 21.3 S3 Non-sheathed cables for fixed wiring
HD 21.4 S2 Sheathed cables for fixed wiring (Reprint)
HD 21.5 S3 Flexible cables (cords)
HD 21.6 (Spare)
HD 21.7 S2 Single core non-sheathed cables for internal wiring for a conductor
temperature of 90 °C
HD 21.8 S2 Single core non-sheathed cables for decorative chains
HD 21.9 S2 Single core non-sheathed cables for installation at low temperatures
HD 21.10 S2 Extensible leads
HD 21.11 S1 Cables for luminaires
HD 21.12 S1 Heat-resistant flexible cables (cords)
HD 21.13 S1 Oil resistant PVC sheathed cables with two or more conductors
HD 21.14 S1 Flexible cables (cords), insulated and sheathed with halogen-free
thermoplastic compounds
HD 21.15 S1 Single core cables, insulated with halogen-free thermoplastic compound, for
fixed wiring
__________
- 3 - HD 21.15 S1:2006
Contents
1 Scope.4
2 Normative references .4
3 Terms and definitions .5
4 Single-core non-sheathed cable with rigid conductor for general purposes .5
4.1 Code designation .5
4.2 Rated voltage.5
4.3 Construction.5
4.4 Tests .6
4.5 Smoke emission of cable.6
4.6 Guide to use.6
5 Single-core non-sheathed cable with flexible conductor for general purposes.8
5.1 Code designation .8
5.2 Rated voltage.8
5.3 Construction.9
5.4 Tests .9
5.5 Smoke emission of cable.9
5.6 Guide to use.9
6 Single-core non-sheathed cable with rigid conductor for internal wiring .11
6.1 Code designation .11
6.2 Rated voltage.11
6.3 Construction.12
6.4 Tests .12
6.5 Smoke emission of cable.12
6.6 Guide to use.12
7 Single-core non-sheathed cable with flexible conductor for internal wiring .14
7.1 Code designation .14
7.2 Rated voltage.14
7.3 Construction.14
7.4 Tests .14
7.5 Smoke emission of cable.14
7.6 Guide to use.14
Annex A (normative) Requirements for halogens .16
Annex B (normative) Determination of halogens – Elemental test .18
Annex C (informative) Proposed amendment to HD 516 S2 .20
Tables
Table 1 - General data for Types H07Z1-U and H07Z1-R.7
Table 2 - Tests for Types H07Z1-U and H07Z1-R .8
Table 3 - General data for Type H07Z1-K .10
Table 4 - Tests for Type H07Z1-K .11
Table 5 - General data for Types H05Z1-U and H05Z1-R.13
Table 6 - Tests for Types H05Z1-U and H05Z1-R .13
Table 7 - General data for Type H05Z1-K .15
Table 8 - Tests for Type H05Z1-K .15
Table A.1 .16
Table A.2 .17

1 Scope
This Part 15 details the particular specifications for single-core non-sheathed cables for fixed
wiring at rated voltages up to and including 450/750 V, insulated with halogen-free
thermoplastic compound and having low emission of smoke and corrosive gases when
exposed to fire. For cables rated at 450/750 V there are two types, Type 1 and Type 2.
Type 2 cables are required to meet a more severe test for resistance to flame propagation
(EN 50266-2-4) than Type 1, and have particular suitability for installation in bunches (see
also Annex C).
The maximum permissible conductor temperature is 70 °C.
All cables shall comply with the appropriate requirements given in Part 1 of HD 21 and with
the particular requirements of this Part 15.
NOTE 1  The overall dimensions of cables in HD 21.15 S1 have been calculated in accordance with EN 60719.
NOTE 2  Low emission of smoke is checked in accordance with EN 61034-2. Low emission of corrosive gases is
checked as part of the check for absence of halogens (see Annex A).
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
EN 50266 Series Common test methods for cables under fire conditions - Test for
vertical flame spread of vertically-mounted bunched wires or
cables
EN 50267-2-1 Common test methods for cables under fire conditions - Tests on
gases evolved during combustion of materials from cables -
Part 2-1: Procedures - Determination of the amount of halogen
acid gas
EN 50267-2-2 Part 2-2: Procedures - Determination of degree of acidity of gases
for materials by measuring pH and conductivity
EN 50356 Method for spark testing of cables
EN 50363-7 Insulating, sheathing and covering materials for low voltage
energy cables - Part 7: Halogen-free, thermoplastic insulating
compounds
EN 50395 Electrical test methods for low voltage energy cables
EN 50396 Non electrical test methods for low voltage energy cables
HD 21 Series Cables of rated voltages up to and including 450/750 V and having
thermoplastic insulation
HD 516 Guide to use of low voltage harmonized cables
EN 60228 Conductors of insulated cables (IEC 60228)

- 5 - HD 21.15 S1:2006
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 (IEC 60332-1-2)
EN 60684-2 Flexible insulating sleeving - Part 2: Methods of test (IEC 60684-2)
EN 60719 Calculation of the lower and upper limits for the average outer
dimensions of cables with circular copper conductors and of rated
voltage up to and including 450/750 V (IEC 60719)
EN 60811 Series Insulating and sheathing materials of electric and optical cables -
Common test methods (IEC 60811 Series)
EN 61034-2 Measurement of smoke density of cables burning under defined
conditions - Part 2: Test procedure and requirements
(IEC 61034-2)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
Type 1 cable
cable meeting the requirements for resistance to flame spread as given in EN 60332-1-2
3.2
Type 2 cable
cable meeting the requirements for resistance to flame spread as given in EN 60332-1-2 and
additionally as given in EN 50266-2-4
4 Single-core non-sheathed cable with rigid conductor for general purposes
4.1 Code designation
H07Z1-U, for cables with solid conductors;
H07Z1-R, for cables with stranded rigid conductors.
4.2 Rated voltage
450/750 V
NOTE 600/1 000 V, when this cable is used in fixed installations with mechanical protection, within switchgear and
controlgear (see HD 516).
4.3 Construction
4.3.1 Conductor
Number of conductors: 1
The conductors shall comply with the requirements given in EN 60228:
– class 1 for solid conductors;
– class 2 for stranded conductors.
4.3.2 Separator
A separator of suitable material may be applied around the conductor.

4.3.3 Insulation
The insulation shall be thermoplastic compound TI 7, to EN 50363-7, applied around the
conductor.
The insulation thickness shall comply with the specified value given in Table 1, column 3.
The insulation resistance shall be not less than the values given in Table 1, column 6.
4.3.4 Overall diameter
The mean overall diameter shall be within the limits given in Table 1, columns 4 and 5.
4.3.5 Outer marking
The cable shall have the marking H07Z1-U (or –R as appropriate) printed or embossed on, or
indented into, the insulation. The marking, which shall meet the requirements of 3.2 and 3.3 of
Part 1, shall be legible.
An additional mandatory marking, to differentiate Type 1 cable from Type 2 cable, shall be
applied as follows:
– for Type 1 cables the marking shall be TYPE 1;
– for Type 2 cable the marking shall be TYPE 2.
The additional marking shall be placed immediately after the marking of the code, and shall
meet the requirements of 3.2 and 3.3 of Part 1, and shall be legible.
NOTE Type 2 cables may have an additional voluntary marking to satisfy national requirements. Such markings
should not conflict with any of the markings required by the standard.
4.4 Tests
Compliance with the requirements of 4.3, shall be checked by inspection and by the tests
given in Table 2.
4.5 Smoke emission of cable
When tested in accordance with the method and procedure given in EN 61034-2, all sizes of
cable in HD 21.15 S1 shall exceed 60 % light transmittance throughout the test.
4.6 Guide to use
See Annex C.
- 7 - HD 21.15 S1:2006
Table 1 - General data for Types H07Z1-U and H07Z1-R
1 2 3 4 5 6
Nominal Class of Thickness of Mean overall diameter Minimum insulation
cross- conductor insulation resistance at 70 °C
Lower limit Upper limit
sectional (EN 60228)
Specified value
area of
conductors
mm mm mm mm MΩ·km
1,5 1 0,7 2,6 3,2 0,011
1,5 2 0,7 2,7 3,3 0,010
2,5 1 0,8 3,2 3,9 0,010
2,5 2 0,8 3,3 4,0 0,009 9
4 1 0,8 3,6 4,4 0,008 7
4 2 0,8 3,8 4,6 0,008 2
6 1 0,8 4,1 5,0 0,007 4
6 2 0,8 4,3 5,2 0,007 0
10 1 1,0 5,3 6,4 0,007 2
10 2 1,0 5,6 6,7 0,006 7
16 2 1,0 6,4 7,8 0,005 6
25 2 1,2 8,1 9,7 0,005 3
35 2 1,2 9,0 10,9 0,004 6
50 2 1,4 10,6 12,8 0,004 6
70 2 1,4 12,1 14,6 0,004 0
95 2 1,6 14,1 17,1 0,003 9
120 2 1,6 15,6 18,8 0,003 5
150 2 1,8 17,3 20,9 0,003 5
185 2 2,0 19,3 23,3 0,003 5
240 2 2,2 22,0 26,6 0,003 4
300 2 2,4 24,5 29,6 0,003 3
400 2 2,6 27,5 33,2 0,003 1
500 2 2,8 30,5 36,9 0,003 0
630 2 2,8 34,0 41,1 0,002 7
Table 2 - Tests for Types H07Z1-U and H07Z1-R
1 2 3 4 5
Ref Tests Category of Test Method described in
No. test
HD / EN Clause
1 Electrical tests
1.1 Resistance of conductors T, S 50395 5
1.2 Voltage test at 2 500 V T, S 50395 6
1.3 Insulation resistance at 70 °C T, S 50395 8.1
1.4 Long term resistance of insulation to d.c. T 50395 9

1.5 Absence of faults in insulation R 50395 10

2 Provisions covering constructional and
dimensional characteristics
2.1 Checking of compliance with constructional T, S 21.1 Inspection and
provisions manual tests
2.2 Measurement of thickness of insulation T, S 50396 4.1
2.3 Measurement of overall diameter T, S 50396 4.4

3 Insulation material tests
T 50363-7
4 Impact test at –15 °C T 60811-1-4 8.5

5 Test for integrity of insulation under
overload condition (Under consideration)

6 Tests under fire conditions
a
6.1 Test on single vertical cable T 60332-1-2 -
b
6.2 Test on bunched wires T 50266-2-4 -
6.3 Smoke emission T 61034-2 -
6.4 Assessment of halogens for all non-metallic T, S 21.15 Annex A
materials
a
Applicable to Type 1 and Type 2 cables.
b
Only applicable to Type 2 cables.

5 Single-core non-sheathed cable with flexible conductor for general purposes
5.1 Code designation
H07Z1-K
5.2 Rated voltage
450/750 V
NOTE 600/1 000 V, when this cable is used in fixed installations with mechanical protection, within switchgear and
controlgear (see HD 516).
- 9 - HD 21.15 S1:2006
5.3 Construction
5.3.1 Conductor
Number of conductors: 1
The conductors shall comply with the requirements given in EN 60228 for Class 5 conductors.
5.3.2 Separator
A separator of suitable material may be applied around the conductor.
5.3.3 Insulation
The insulation shall be thermoplastic compound TI 7, to EN 50363-7, applied around the
conductor.
The insulation thickness shall comply with the specified
...