IEC 60245-4:2011

IEC 60245-4 ®
Edition 3.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 4: Cords and flexible cables

Conducteurs et câbles isolés au caoutchouc – Tension assignée au plus égale à
450/750 V –
Partie 4: Câbles souples
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IEC 60245-4 ®
Edition 3.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 4: Cords and flexible cables

Conducteurs et câbles isolés au caoutchouc – Tension assignée au plus égale à
450/750 V –
Partie 4: Câbles souples
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 29.060.20 ISBN 978-2-88912-703-0

– 2 – 60245-4  IEC:2011
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Braided cord . 7
3 Ordinary tough rubber sheathed cord . 7
3.1 Code designation . 7
3.2 Rated voltage . 7
3.3 Construction . 7
3.3.1 Conductor . 7
3.3.2 Separator . 7
3.3.3 Insulation. 7
3.3.4 Assembly of cores and filler, if any . 7
3.3.5 Sheath . 7
3.3.6 Overall diameter . 8
3.4 Tests . 8
3.5 Guide to use . 8
4 Ordinary polychloroprene or other equivalent synthetic elastomer sheathed cord . 10
4.1 Code designation . 10
4.2 Rated voltage . 10
4.3 Construction . 10
4.3.1 Conductor . 10
4.3.2 Separator . 10
4.3.3 Insulation. 10
4.3.4 Assembly of cores and filler, if any . 10
4.3.5 Sheath . 10
4.3.6 Overall diameter . 10
4.4 Tests . 11
4.5 Guide to use . 11
5 Heavy polychloroprene or other equivalent synthetic elastomer sheathed flexible
cable . 13
5.1 Code designation . 13
5.2 Rated voltage . 13
5.3 Construction . 13
5.3.1 Conductor . 13
5.3.2 Separator . 13
5.3.3 Insulation. 13
5.3.4 Proofed textile tape . 13
5.3.5 Assembly of cores and filler, if any . 13
5.3.6 Sheath . 13
5.3.7 Overall diameter . 14
5.4 Tests . 14
5.5 Guide to use . 14
6 Polychloroprene or equivalent synthetic elastomer sheathed cable for decorative
chains . 18
6.1 Code designation . 18

60245-4  IEC:2011 – 3 –
6.2 Rated voltage . 18
6.3 Construction . 18
6.3.1 Conductor . 18
6.3.2 Separator . 18
6.3.3 Insulation. 18
6.3.4 Assembly of cores . 18
6.3.5 Sheath . 18
6.3.6 Overall dimensions . 18
6.4 Tests . 19
6.5 Guide to use . 19
Bibliography . 21

Table 1 – Dimensions of type 60245 IEC 53. 8
Table 2 – Tests for type 60245 IEC 53 . 9
Table 3 – Dimensions of type 60245 IEC 57. 11
Table 4 – Tests for type 60245 IEC 57 . 12
Table 5 – Dimensions of type 60245 IEC 66. 15
Table 6 – Tests for type 60245 IEC 66 . 17
Table 7 – Dimensions of type 60245 IEC 58 and 58f . 19
Table 8 – Tests for the types 60245 IEC 58 and 58f . 20

– 4 – 60245-4  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RUBBER INSULATED CABLES –
RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 4: Cords and flexible cables

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60245-4 has been prepared by IEC technical committee 20:
Electric cables.
This third edition of IEC 60245-4 cancels and replaces the second edition published in 1994,
amendment 1 (1997) and amendment 2 (2003). The document 20/1262/FDIS, circulated to the
National Committees as amendment 3, led to the publication of this new edition.
The main changes with respect to the previous edition are as follows:
– updating of the normative references;
– updating of Table 3 and Table 5 on dimensions for type 53 and type 57.

60245-4  IEC:2011 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
20/1262/FDIS 20/1272/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This standard should be read in conjunction with parts 1 and 2.
A list of all the parts in the IEC 60245 series, published under the general title Rubber
insulated cables – Rated voltages up to and including 450/750 V, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – 60245-4  IEC:2011
RUBBER INSULATED CABLES –
RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 4: Cords and flexible cables

1 General
1.1 Scope
This part of IEC 60245 details the particular specifications for rubber insulated and braided
cords and for rubber insulated and rubber or polychloroprene or other equivalent synthetic
elastomer sheathed cords and flexible cables of rated voltages up to and including 450/750 V.
All cables should comply with the appropriate requirements given in IEC 60245-1 and the
individual types of cables should each comply with the particular requirements of this part.
1.2 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.
NOTE The IEC 60811 series is currently undergoing a revision, which will lead to a restructuring of its parts. A
description of this, as well as a cross-reference table between the current and planned parts will be given in
IEC 60811-100.
IEC 60228, Conductors of insulated cables
IEC 60245-1:2003, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 1: General requirements
Amendment 1:2007
IEC 60245-2:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 2: Test methods
Amendment 1:1997
Amendment 2:1997
IEC 60245-8:1998, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 8: Cords for applications requiring high flexibility
Amendment 1:2004
Amendment 2:2011
IEC 60811-1-1:1993, Common test methods for insulating and sheathing materials of electric
cables and optical cables – Part 1-1: Methods for general application – Measurement of
thickness and overall dimensions – Tests for determining the mechanical properties
Amendment 1:2001
IEC 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section Two: Thermal ageing methods
Amendment 1:1989
Amendment 2:2000
IEC 60811-1-4:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section Four: Tests at low temperature
Amendment 1:1993
Amendment 2:2001
60245-4  IEC:2011 – 7 –
IEC 60811-2-1:1998, Insulating and sheathing materials of electric and optical cables –
Common test methods – Part 2-1: Methods specific to elastomeric compounds – Ozone
resistance, hot set and mineral  oil immersion tests
Amendment 1:2001
2 Braided cord
See Clause 5 of IEC 60245-8:1998, as introduced in Amendment 1 (2004).
3 Ordinary tough rubber sheathed cord
3.1 Code designation
60245 IEC 53.
3.2 Rated voltage
300/500 V.
3.3 Construction
3.3.1 Conductor
Number of conductors: 2, 3, 4 or 5.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
The wires may be plain or tinned.
3.3.2 Separator
A separator of suitable material may be applied around each conductor.
3.3.3 Insulation
The insulation shall be a rubber compound of type IE4 applied around each conductor.
The insulation shall be applied by extrusion.
The insulation thickness shall comply with the specified value given in Table 1, column 2.
3.3.4 Assembly of cores and filler, if any
The cores shall be twisted together.
A centre filler may be used.
3.3.5 Sheath
The sheath shall be rubber compound of type SE3, applied around the cores.
The thickness of sheath shall comply with the specified value given in Table 1, column 3.
The sheath shall be extruded in a single layer and applied in such a way that it fills the spaces
between the cores.
The sheath shall be capable of being removed without damage to the cores.

– 8 – 60245-4  IEC:2011
3.3.6 Overall diameter
The mean overall diameter shall be within the limits given in Table 1, columns 4 and 5.
3.4 Tests
Compliance with the requirements of 3.3 shall be checked by inspection and by the tests
given in Table 2.
3.5 Guide to use
Maximum conductor temperature in normal use: 60 °C.
NOTE Other guidelines are under consideration.
Table 1 – Dimensions of type 60245 IEC 53
1 2 3 4 5
Number and nominal Thickness Thickness
a
cross-sectional area of of insulation of sheath Mean overall dimensions
conductors
Specified value Specified value Lower limit Upper limit
mm
mm mm mm mm
2 × 0,75 0,6 0,8 5,7 7,4
0,6 0,9 6,1 8,0
2 × 1
0,8 1,0 7,6 9,8
2 × 1,5
2 × 2,5 0,9 1,1 9,0 11,6
2 × 4 1,0 1,2 10,6 13,7
3 × 0,75 0,6 0,9 6,2 8,1
3 × 1 0,6 0,9 6,5 8,5
0,8 1,0 8,0 10,4
3 × 1,5
3 × 2,5 0,9 1,1 9,6 12,4
3 × 4 1,0 1,2 11,3 14,5
4 × 0,75 0,6 0,9 6,8 8,8
4 × 1 0,6 0,9 7,1 9,3
4 × 1,5 0,8 1,1 9,0 11,6
0,9 1,2 10,7 13,8
4 × 2,5
1,0 1,3 12,7 16,2
4 × 4
5 × 0,75 0,6 1,0 7,6 9,9
5 × 1 0,6 1,0 8,0 10,3
5 × 1,5 0,8 1,1 9,8 12,7
5 × 2,5 0,9 1,3 11,9 15,3
1,0 1,4 14,1 17,9
5 × 4
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

60245-4  IEC:2011 – 9 –
Table 2 – Tests for type 60245 IEC 53
1 2 3 4
Test method described in
Category
Ref. No. Test
of test a
IEC Subclause
1 Electric tests
1.1 Resistance of conductors T, S 60245-2 2.1
1.2 Voltage test on cores according to specified
insulation thickness:
1.2.1 at 1 500 V up to and including 0,6 mm T 60245-2 2.3
1.2.2 at 2 000 V exceeding 0,6 mm T 60245.2 2.3
1.3 Voltage test on completed cable at 2 000 V T, S 60245-2 2.2
2 Provisions covering constructional and 60245-1 and
dimensional characteristics 60245-2
2.1 Checking of compliance with constructional provisions T, S 60245-1 Inspection and
manual tests
2.2 Measurement of thickness of insulation T, S 60245-2 1.9
2.3 Measurement of thickness of sheath T, S 60245-2 1.10
2.4 Measurement of overall diameter
2.4.1 mean value T, S 60245-2 1.11
2.4.2 ovality T, S 60245-2 1.11
3 Mechanical properties of insulation
3.1 Tensile test before ageing T 60811-1-1 9.1
3.2 Tensile test after ageing in the air oven T 60245-2 Clause 4
3.3 Tensile test after ageing in the air bomb T 60811-1-2 8.2
3.4 Hot set test T 60811-2-1 Clause 9
3.5 Ozone resistance test T 60811-2-1 Clause 8
4 Mechanical properties of sheath
4.1 Tensile test before ageing T 60811-1-1 9.2
4.2 Tensile test after ageing in the air oven T 60811-1-2 8.1.3.1
4.3 Hot set test T 60811-2-1 Clause 9
5 Mechanical strength of completed cable
5.1 Flexing test followed, after immersion in water,
by a voltage test:
at 2 000 V on completed cable having two cores T 60245-2 3.1 and 2.2
For cables having more than two cores:
at 1 500 V on cores with specified insulation T 60245-2 3.1 and 2.3
thickness up to and including 0,6 mm
at 2 000 V on cores with specified insulation T 60245-2 3.1 and 2.3
thickness exceeding 0,6 mm
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.

– 10 – 60245-4  IEC:2011
4 Ordinary polychloroprene or other equivalent synthetic elastomer
sheathed cord
4.1 Code designation
60245 IEC 57.
4.2 Rated voltage
300/500 V.
4.3 Construction
4.3.1 Conductor
Number of conductors: 2, 3, 4 or 5.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
The wires may be plain or tinned.
4.3.2 Separator
A separator of suitable material may be applied around each conductor.
4.3.3 Insulation
The insulation shall be rubber compound of type IE4 applied around each conductor.
The insulation shall be applied by extrusion.
The insulation thickness shall comply with the specified value given in Table 3, column 2.

4.3.4 Assembly of cores and filler, if any
The cores shall be twisted together.
A centre filler may be used.
4.3.5 Sheath
The sheath shall be rubber compound of type SE4 applied around the cores.
The thickness of sheath shall comply with the specified value given in Table 5, column 3.
The sheath shall be extruded in a single layer and applied in such a way that it fills the spaces
between the cores.
The sheath shall be capable of being removed without damage to the cores.
4.3.6 Overall diameter
The mean overall diameter shall be within the limits given in Table 3, columns 4 and 5.

60245-4  IEC:2011 – 11 –
4.4 Tests
Compliance with the requirements of 4.3 shall be checked by inspection and by the tests
given in Table 4.
4.5 Guide to use
Maximum conductor temperature in normal use: 60 °C.
NOTE Other guidelines are under consideration.
Table 3 – Dimensions of type 60245 IEC 57
1 2 3 4 5
Number and nominal
Thickness Thickness
a
cross-sectional area of Mean overall dimensions
of insulation of sheath
conductors
Specified value Specified value Lower limit Upper limit
mm
mm mm mm mm
2 × 0,75 0,6 0,8 5,7 7,4
0,6 0,9 6,1 8,0
2 × 1
0,8 1,0 7,6 9,8
2 × 1,5
2 × 2,5 0,9 1,1 9,0 11,6
2 × 4 1,0 1,2 10,6 13,7
3 × 0,75 0,6 0,9 6,2 8,1
3 × 1 0,6 0,9 6,5 8,5
0,8 1,0 8,0 10,4
3 × 1,5
3 × 2,5 0,9 1,1 9,6 12,4
3 × 4 1,0 1,2 11,3 14,5
4 × 0,75 0,6 0,9 6,8 8,8
4 × 1 0,6 0,9 7,1 9,3
4 × 1,5 0,8 1,1 9,0 11,6
0,9 1,2 10,7 13,8
4 × 2,5
1,0 1,3 12,7 16,2
4 × 4
5 × 0,75 0,6 1,0 7,6 9,9
5 × 1 0,6 1,0 8,0 10,3
5 × 1,5 0,8 1,1 9,8 12,7
5 × 2,5 0,9 1,3 11,9 15,3
1,0 1,4 14,1 17,9
5 × 4
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

– 12 – 60245-4  IEC:2011
Table 4 – Tests for type 60245 IEC 57
1 2 3 4
Test method described in
Category
Ref. No. Test
of test a
IEC Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60245-2 2.1
1.2 Voltage test on cores according to specified
insulation thickness:
1.2.1 at 1 500 V up to and including 0,6 mm T 60245-2 2.3
1.2.2 at 2 000 V exceeding 0,6 mm T 60245-2 2.3
1.3 Voltage test on completed cable at 2 000 V T, S 60245-2 2.2

2 Provisions covering constructional and 60245-1 and
dimensional characteristics 60245-2
2.1 Checking of compliance with constructional provisions T, S 60245-1 Inspection and
manual tests
2.2 Measurement of thickness of insulation T, S 60245-2 1.9
2.3 Measurement of thickness of sheath T, S 60245-2 1.10
2.4 Measurement of overall diameter:
2.4.1 mean value T, S 60245-2 1.11
2.4.2 ovality T, S 60245-2 1.11

3 Mechanical properties of insulation
3.1 Tensile test before ageing T 60811-1-1 9.1
3.2 Tensile test after ageing in the air oven T 60245-2 Clause 4
3.3 Tensile test after ageing in the air bomb T 60811-1-2 8.2
3.4 Hot set test T 60811-2-1 Clause 9
3.5 Ozone resistance test T 60811-2-1 Clause 8

4 Mechanical properties of sheath
4.1 Tensile test before ageing T 60811-1-1 9.2
4.2 Tensile test after ageing in the air oven T 60811-1-2 8.1.3.1
4.3 Tensile test after immersion in oil T 60811-2-1 Clause 10
4.4 Hot set test T 60811-2-1 Clause 9

5 Mechanical strength of completed cable
5.1 Flexing test followed, after immersion in water,
by a voltage test:
- at 2 000 V on completed cable having two cores T 60245-2 3.1 and 2.2
For cables having more than two cores:
- at 1 500 V on cores with specified insulation T 60245-2 3.1 and 2.3
thickness up to and including 0,6 mm
at 2 000 V on cores with specified insulation T 60245-2 3.1 and 2.3
thickness exceeding 0,6 mm
6 Test at low temperature
6.1 Bending test for sheath T 60811-1-4 8.2
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.

60245-4  IEC:2011 – 13 –
5 Heavy polychloroprene or other equivalent synthetic elastomer sheathed
flexible cable
5.1 Code designation
60245 IEC 66.
5.2 Rated voltage
450/750 V.
5.3 Construction
5.3.1 Conductor
Number of conductors: 1, 2, 3, 4 or 5.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
The wires may be plain or tinned.
5.3.2 Separator
A separator of suitable material may be applied around each conductor.
5.3.3 Insulation
The insulation shall be rubber compound of type IE4 applied around each conductor.
The insulation shall be applied by extrusion.
The thickness of insulation shall comply with the specified value given in Table 5, column 2.
5.3.4 Proofed textile tape
An optional proofed textile tape may be applied on each core for cables with conductors
having a nominal cross-section in excess of 4 mm and it shall be applied helically wound with
an overlap of at least 1 mm.
The tape shall be applied to the insulation in such a manner that it can be removed without
damage to the insulation.
5.3.5 Assembly of cores and filler, if any
The cores shall be twisted together.
A centre filler may be used.
In the case of cores having conductors of large cross-section, a textile tape may be applied
around the core assembly before application of the sheath, provided that the finished cables
shall not have any substantial cavity in outer interstices between the cores.
5.3.6 Sheath
The cores shall be covered with a sheath.
The thickness of sheath shall comply with the specified value given in Table 5, columns 3, 4
and 5.
– 14 – 60245-4  IEC:2011
The sheath shall be made up as follows:
5.3.6.1 For single-core cables
– sheath in a single layer, rubber compound of type SE4.
5.3.6.2 For multicore cables
a) Cross-sections not exceeding 10 mm :
– in a single layer, rubber compound of type SE4.
b) Cross-sections in excess of 10 mm :
– either in a single layer, rubber compound of type SE4;
– or in two layers, with the inner layer made of rubber compound of type SE3 and the
outer layer of rubber compound of type SE4.
c) Sheath penetration:
In cases a) and b), the sheath in a single layer or the inner layer of the sheath in two layers
shall fill the spaces between the cores.
The sheath shall be capable of being removed without damage to the laid-up cores.
5.3.7 Overall diameter
The mean overall diameter shall be within the limits given in Table 5, columns 6 and 7.
5.4 Tests
Compliance with the requirements of 5.3 shall be checked by inspection and by the tests
given in Table 6.
The tests at low temperature shall be restricted to cables with conductor(s) having a nominal
cross-sectional area not exceeding 16 mm .
5.5 Guide to use
Maximum conductor temperature in normal use: 60 °C.
NOTE Other guidelines are under consideration.

60245-4  IEC:2011 – 15 –
Table 5 – Dimensions of type 60245 IEC 66
1 2 3 4 5 6 7
Thickness of Thickness of sheath – Mean overall
a
Number and
insulation Specified value diameter
nominal cross-
sectional area Two layers
Specified
One layer Lower limit Upper limit
of conductors
value
Inner layer Outer layer
mm mm mm mm mm mm mm
0,8 1,4 – – 5,7 7,1
1 × 1,5
0,9 1,4 – – 6,3 7,9
1 × 2,5
1,0 1,5 – – 7,2 9,0
1 × 4
1,0 1,6 – – 7,9 9,8
1 × 6
1,2 1,8 – – 9,5 11,9
1 × 10
1,2 1,9 – – 10,8 13,4
1 × 16
1 × 25 1,4 2,0 – – 12,7 15,8
1,4 2,2 – – 14,3 17,9
1 × 35
1,6 2,4 – – 16,5 20,6
1 × 50
1,6 2,6 – – 18,6 23,3
1 × 70
1,8 2,8 – – 20,8 26,0
1 × 95
1,8 3,0 – – 22,8 28,6
1 × 120
2,0 3,2 – – 25,2 31,4
1 × 150
2,2 3,4 – – 27,6 34,4
1 × 185
2,4 3,5 – – 30,6 38,3
1 × 240
1 × 300 2,6 3,6 – – 33,5 41,9
2,8 3,8 – – 37,4 46,8
1 × 400
0,8 1,3 – – 7,7 10,0
2 × 1
0,8 1,5 – – 8,5 11,0
2 × 1,5
0,9 1,7  10,2 13,1
2 × 2,5
1,0 1,8 – – 11,8 15,1
2 × 4
1,0 2,0 – – 13,1 16,8
2 × 6
1,2 3,1 – – 17,7 22,6
2 × 10
1,2 3,3 1,3 2,0 20,2 25,7
2 × 16
1,4 3,6 1,4 2,2 24,3 30,7
2 × 25
0,8 1,4 – – 8,3 10,7
3 × 1
0,8 1,6 – – 9,2 11,9
3 × 1,5
0,9 1,8 – – 10,9 14,0
3 × 2,5
1,0 1,9 – – 12,7 16,2
3 × 4
1,0 2,1 – – 14,1 18,0
3 × 6
1,2 3,3 – – 19,1 24,2
3 × 10
3 × 16 1,2 3,5 1,4 2,1 21,8 27,6
1,4 3,8 1,5 2,3 26,1 33,0
3 × 25
1,4 4,1 1,6 2,5 29,3 37,1
3 × 35
– 16 – 60245-4  IEC:2011
Table 5 (continued)
1 2 3 4 5 6 7
Thickness of sheath
Thickness of Mean overall
Number and a
insulation diameter
Specified value
nominal cross-
sectional area
Two layers
Specified
of conductors
One layer Lower limit Upper limit
value
Inner layer Outer layer
mm mm mm mm mmm mm mm
1,6 4,5 1,8 2,7 34,1 42,9
3 × 50
1,6 4,8 1,9 2,9 38,4 48,3
3 × 70
1,8 5,3 2,1 3,2 43,3 54,0
3 × 95
0,8 1,5 – – 9,2 11,9
4 × 1
0,8 1,7 – – 10,2 13,1
4 × 1,5
0,9 1,9 – – 12,1 15,5
4 × 2,5
1,0 2,0 – – 14,0 17,9
4 × 4
1,0 2,3 – – 15,7 20,0
4 × 6
1,2 3,4 – – 20,9 26,5
4 × 10
4 × 16 1,2 3,6 1,4 2,2 23,8 30,1
1,4 4,1 1,6 2,5 28,9 36,6
4 × 25
1,4 4,4 1,7 2,7 32,5 41,1
4 × 35
1,6 4,8 1,9 2,9 37,7 47,5
4 × 50
1,6 5,2 2,0 3,2 42,7 54,0
4 × 70
1,8 5,9 2,3 3,6 48,4 61,0
4 × 95
1,8 6,0 2,4 3,6 53,0 66,0
4 × 120
2,0 6,5 2,6 3,9 58,0 73,0
4 × 150
0,8 1,6 – – 10,2 13,1
5 × 1
0,8 1,8 – – 11,2 14,4
5 × 1,5
0,9 2,0 – – 13,3 17,0
5 × 2,5
5 × 4 1,0 2,2 – – 15,6 19,9
1,0 2,5 – – 17,5 22,2
5 × 6
1,2 3,6 – – 22,9 29,1
5 × 10
1,2 3,9 1,5 2,4 26,4 33,3
5 × 16
1,4 4,4 1,7 2,7 32,0 40,4
5 × 25
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

60245-4  IEC:2011 – 17 –
Table 6 – Tests for type 60245 IEC 66
1 2 3 4
Test method described in
Category
Ref. No. Test
a
of test
IEC Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60245-2 2.1
1.2 Voltage test on cores at 2 500 V T 60245-2 2.3
1.3 Voltage test on completed cable at 2 500 V T, S 60245-2 2.2
2 Provisions covering constructional and 60245-1 and
dimensional characteristics 60245-2
2.1 Checking of compliance with constructional provisions T, S 60245-1 Inspection and
manual tests
2.2 Measurement of thickness of insulation T, S 60245-2 1.9
2.3 Measurement of thickness of sheath T, S 60245-2 1.10
2.4 Measurement of overall diameter:
2.4.1 mean value T, S 60245-2 1.11
2.4.2 ovality T, S 60245-2 1.11

3 Mechanical properties of insulation
3.1 Tensile test before ageing T 60811-1-1 9.1
3.2 Tensile test after ageing in the air oven T 60245-2 Clause 4
3.3 Tensile test after ageing in the air bomb T 60811-1-2 8.2
3.4 Hot set test T 60811-2-1 Clause 9
3.5 Ozone resistance test T 60811-2-1 Clause 8

4 Mechanical properties of sheath
4.1 Tensile test before ageing T 60811-1-1 9.2
4.2 Tensile test after ageing in the air oven T 60811-1-2 8.1.3.1
4.3 Tensile test after immersion in oil T 60811-2-1 Clause 10
4.4 Hot set test T 60811-2-1 Clause 9

5 Mechanical strength of completed cable
5.1 Flexing test followed, after immersion in water, by a
voltage test:
at 2 000 V on completed cable having not more T 60245-2 3.1 and 2.2
than two cores
For cables having more than two cores:
at 2 000 V on cores T 60245-2 3.1 and 2.3

6 Tests at low temperature (see also 5.4)

6.1 Bending test for sheath T 60811-1-4 8.2
b
6.2 Elongation test for sheath T 60811-1-4 8.4
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.
b
Only applicable if the outer diameter of the cable exceeds the limits specified in the test method.

– 18 – 60245-4  IEC:2011
6 Polychloroprene or equivalent synthetic elastomer sheathed cable
for decorative chains
6.1 Code designation
60245 IEC 58 for circular cable;
60245 IEC 58f for flat cable.
6.2 Rated voltage
300/500 V.
6.3 Construction
6.3.1 Conductor
Number of conductors: 1 or 2.
The conductor(s) shall comply with the requirements given in IEC 60228 for class 5
conductors. The wires may be plain or tinned.
6.3.2 Separator
A separator of suitable material may be applied around each conductor.
6.3.3 Insulation
The insulation shall be rubber compound of type IE4 applied around each conductor.
The insulation shall be applied by extrusion.
The insulation thickness shall comply with the specified value given in column 2 of Table 7.
6.3.4 Assembly of cores
The two cores of the two-core cables shall be laid in parallel. The distance between the centre
of conductors shall comply with the mean value given in columns 3 and 4 of Table 7.
6.3.5 Sheath
The sheath shall be rubber compound of type SE4 applied around the cores.
For the flat two-core cable the sheath shall fill the spaces between the cores, thus forming a
filling.
The sheath thickness shall comply with the specified value given in column 5 of Table 7.
The sheath shall be capable of being removed without damage to the core(s).
The preferred sheath colours are green and black.
6.3.6 Overall dimensions
The mean overall diameter of circular cable and the mean overall dimensions of flat cable
shall be within the limits given in columns 6 and 7 of Table 7.

60245-4  IEC:2011 – 19 –
6.4 Tests
Compliance with the requirements of 6.3 shall be checked by inspection and by the tests
given in Table 8.
For the requirements of 6.3.5, the procedure to be followed is generally as specified in 1.11 of
IEC 60245-2 except that the measured value is the distance between the centres of
conductors. The mean of the values obtained from the three samples shall be taken as the
mean distance.
6.5 Guide to use
For decorative chains for indoor and outdoor use.
Maximum conductor temperature in normal use: 60 °C.
Table 7 – Dimensions of type 60245 IEC 58 and 58f
1 2 3 4 5 6 7
Number and Thickness of Distance between centres Thickness Mean overall
a
nominal cross- insulation of conductors of sheath dimensions
sectional area
Mean lower Mean upper Specified
of conductors
Specified value Lower limits Upper limits
limit limit value
mm mm mm mm mm mm mm
1 × 0,75 0,8 – – 0,8 4,1 5,2
0,8 – – 0,8 4,5 5,6
1 × 1,5
0,8 6,7 7,0 0,8
5,0 × 13,0 6,0 × 14,0
2 × 1,5
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

– 20 – 60245-4  IEC:2011
Table 8 – Tests for the types 60245 IEC 58 and 58f
1 2 3 4
Test method described in
Category
Ref. No. Test
a
of test
IEC Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60245-2 2.1
1.2 Voltage test on cores at 2 000 V T 60245-2 2.3
1.3 Voltage test on completed cable at 2 000 V T, S 60245-2 2.2

2 Provisions covering constructional and 60245-1 and
dimensional characteristics 60245-2
2.1 Checking of compliance with constructional provisions T, S 60245-1 Inspection and
manual tests
2.2 Measurement of thickness of insulation T, S 60245-2 1.9
2.3 Measurement of thickness of sheath T, S 60245-2 1.10
2.4 Measurement of overall dimensions:
2.4.1 mean value T, S 60245-2 1.11
2.4.2 ovality T, S 60245-2 1.11
2.5 Distance between centres of conductors T, S 60245-2 1.11
(see also 6.4)
3 Mechanical properties of insulation
3.1 Tensile test before ageing T 60811-1-1 9.1
3.2 Tensile test after ageing in the air oven T 60245-2 Clause 4
3.3 Tensile test after ageing in the air bomb T 60811-1-2 8.2
3.4 Hot set test T 60811-2-1 Clause 9
3.5 Ozone resistance test T 60811-2-1 Clause 8
4 Mechanical properties of sheath
4.1 Tensile test before ageing T 60811-1-1 9.2
4.2 Tensile test after ageing in the air oven T 60811-1-2 8.1.3.1
4.3 Tensile test after immersion in oil T 60811-2-1 Clause 10
4.4 Hot set test T 60811-2-1 Clause 9
5 Mechanical strength of completed cable
5.1 Flexing test followed, after immersion in water, T 60245-2 3.1 and 2.2
by a voltage test on completed cable at 2 000 V
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause

60245-4  IEC:2011 – 21 –
Bibliography
IEC 60719:1992, Calculation of the lower and upper limits for the average outer dimensions of
cables with circular copper conductors and of rated voltages up to and including 450/750 V

___________
– 22 – 60245-4  CEI:2011
SOMMAIRE
AVANT-PROPOS . 24
1 Généralités . 26
1.1 Domaine d'application . 26
1.2 Références normatives . 26
2 Cordon souples sous tresse . 27
3 Câble souple sous gaine ordinaire de caoutchouc . 27
3.1 Désignation . 27
3.2 Tension assignée . 27
3.3 Constitution . 27
3.3.1 Ame . 27
3.3.2 Séparateur . 27
...