IEC 60227-5:2011

IEC 60227-5 ®
Edition 3.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 5: Flexible cables (cords)

Conducteurs et câbles isolés au polychlorure de vinyle, de tension assignée au
plus égale à 450/750 V –
Partie 5: Câbles souples
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IEC 60227-5 ®
Edition 3.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 5: Flexible cables (cords)

Conducteurs et câbles isolés au polychlorure de vinyle, de tension assignée au
plus égale à 450/750 V –
Partie 5: Câbles souples
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 29.060.20 ISBN 978-2-88912-701-6

– 2 – 60227-5 © IEC:2011
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Flat tinsel cord . 7
2.1 Code designation . 7
2.2 Rated voltage . 7
2.3 Construction . 7
2.3.1 Conductor . 7
2.3.2 Insulation . 7
2.3.3 Assembly of cores . 7
2.3.4 Overall dimensions . 7
2.4 Tests . 8
2.5 Guide to use . 8
3 (Vacant) . 9
4 Cord for indoor decorative lighting chains . 9
4.1 Code designation . 9
4.2 Rated voltage . 9
4.3 Construction . 9
4.3.1 Conductor . 9
4.3.2 Insulation . 9
4.3.3 Cord identification . 9
4.3.4 Overall diameter . 9
4.4 Tests . 9
4.4.1 General . 9
4.4.2 Long term resistance of insulation to d.c. . 9
4.4.3 (Vacant). 10
4.5 Guide to use . 10
5 Light polyvinyl chloride sheathed cord . 11
5.1 Code designation . 11
5.2 Rated voltage . 11
5.3 Construction . 11
5.3.1 Conductor . 11
5.3.2 Insulation . 12
5.3.3 Assembly of cores . 12
5.3.4 Sheath . 12
5.3.5 Overall dimensions . 12
5.4 Tests . 12
5.5 Guide to use . 12
6 Ordinary polyvinyl chloride sheathed cord . 14
6.1 Code designation . 14
6.2 Rated voltage . 14
6.3 Construction . 14
6.3.1 Conductor . 14
6.3.2 Insulation . 14
6.3.3 Assembly of cores and fillers, if any . 14

60227-5 © IEC:2011 – 3 –
6.3.4 Sheath . 15
6.3.5 Overall dimensions . 15
6.4 Tests . 16
6.5 Guide to use . 16
7 Heat-resistant light PVC-sheathed cord for a maximum conductor temperature of
90 °C . 17
7.1 Code designation . 17
7.2 Rated voltage . 17
7.3 Construction . 17
7.3.1 Conductor . 17
7.3.2 Insulation . 17
7.3.3 Assembly of cores . 17
7.3.4 Sheath . 17
7.3.5 Overall dimensions . 18
7.4 Tests . 18
7.5 Guide to use . 18
8 Heat-resistant ordinary PVC-sheathed cord for a maximum conductor temperature
of 90 °C . 20
8.1 Code designation . 20
8.2 Rated voltage . 20
8.3 Construction . 20
8.3.1 Conductor . 20
8.3.2 Insulation . 20
8.3.3 Assembly of cores and fillers, if any . 20
8.3.4 Sheath . 20
8.3.5 Overall dimensions . 20
8.4 Tests . 21
8.5 Guide to use . 21
Bibliography . 24

Table 1 – General data for type 60227 IEC 41 . 8
Table 2 – Tests for type 60227 IEC 41 . 8
Table 3 – General data for type 60227 IEC 43 . 10
Table 4 – Tests for type 60227 IEC 43 . 11
Table 5 – General data for type 60227 IEC 52 . 13
Table 6 – Tests for type 60227 IEC 52 . 13
Table 7 – General data for type 60227 IEC 53 . 15
Table 8 – Tests for type 60227 IEC 53 . 16
Table 9 – General data for type 60227 IEC 56 . 18
Table 10 – Tests for type 60227 IEC 56 . 19
Table 11 – General data for type 60227 IEC 57 . 21
Table 12 – Tests for type 60227 IEC 57 . 22

– 4 – 60227-5 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 5: Flexible cables (cords)

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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agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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Publications.
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 60227-5 has been prepared by IEC technical committee 20: Electric
cables.
This third edition of IEC 60227-5 cancels and replaces the second edition published in 1997,
Amendment 1 (1997) and Amendment 2 (2003). The document 20/1263/FDIS, circulated to the
National Committees as Amendment 3, led to the publication of this new edition.
The main change with respect to the previous edition is as follows:
– Inclusion of a test for long term resistance of insulation to d.c in 4.4.

60227-5 © IEC:2011 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
20/1263/FDIS 20/1273/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.
A list of all the parts in the IEC 60227 series, published under the general title Polyvinyl
chloride insulated cables of 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 – 60227-5 © IEC:2011
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 5: Flexible cables (cords)

1 General
1.1 Scope
This part of IEC 60227 details the particular specifications for polyvinyl chloride insulated
flexible cables (cords), of rated voltages up to and including 300/500 V.
All cables comply with the appropriate requirements given in IEC 60227-1 and each individual
type of cable complies 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 60227-1:2007, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 1: General requirements
IEC 60227-2:1997, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 2: Test methods
Amendment 1 (2003)
IEC 60228, Conductors of insulated cables
IEC 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 60811-1-1:1993, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section 1: 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)
60227-5 © IEC:2011 – 7 –
IEC 60811-3-1:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 3: Methods specific to PVC compounds – Section One: Pressure test at high
temperature – Tests for resistance to cracking
Amendment 1 (1994)
Amendment 2 (2001)
IEC 60811-3-2:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 3: Methods specific to PVC compounds – Section Two: Loss of mass test –
Thermal stability test
Amendment 1 (1993)
Amendment 2 (2003)
2 Flat tinsel cord
2.1 Code designation
60227 IEC 41.
2.2 Rated voltage
300/300 V.
2.3 Construction
2.3.1 Conductor
Number of conductors: 2.
Each conductor shall comprise a number of strands or groups of strands, twisted together,
each strand being composed of one or more flattened wires of copper or copper alloy, helically
wound on a thread of cotton, polyamide or similar material.
The conductor resistance shall not exceed the value given in Table 1, column 5.
2.3.2 Insulation
The insulation shall be polyvinyl chloride compound of type PVC/D applied around each
conductor.
The insulation thickness shall comply with the specified value given in Table 1, column 1.
The insulation resistance shall be not less than the value given in Table 1, column 4.
2.3.3 Assembly of cores
The conductors shall be laid parallel and covered with the insulation.
The insulation shall be provided with a groove on both sides, between the conductors, to
facilitate separation of the cores.
2.3.4 Overall dimensions
The mean overall dimensions shall be within the limits given in Table 1, columns 2 and 3.

– 8 – 60227-5 © IEC:2011
2.4 Tests
Compliance with the requirements of 2.3 shall be checked by inspection and by the tests given
in Table 2.
2.5 Guide to use
Maximum conductor temperature in normal use: 70 °C.
NOTE Other guidelines are under consideration.
Table 1 – General data for type 60227 IEC 41
1 2 3 4 5
a
Insulation thickness Minimum insulation Maximum conductor
Mean overall dimensions
resistance at 70 °C resistance at 20 °C

Specified value Lower limits Upper limits
MΩ × km Ω/km
mm mm mm
0,8 0,019 270
2,2 × 4,4 3,5 × 7,0
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

Table 2 – Tests for type 60227 IEC 41
1 2 3 4
Test method described in:
Category
Ref. No. Test
a
of test
IEC Standard Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60227-2 2.1
1.2 Voltage test on completed cable at 2 000 V T, S 60227-2 2.2
1.3 Insulation resistance at 70 °C T 60227-2 2.4
2 Provisions covering constructional  60227-1
and dimensional characteristics 60227-2
2.1 Checking of compliance with constructional T, S 60227-1 Inspection and
provisions manual test
2.2 Measurement of insulation thickness T, S 60227-2 1.9
2.3 Measurement of overall dimensions T, S 60227-2 1.11
3 Mechanical properties of insulation
3.1 Tensile test before and after ageing T 60811-1-1 9.1
60811-1-2 8.1
3.2 Loss of mass test T 60811-3-2 8.1
4 Pressure test at high temperature T 60811-3-1 8.1
5 Elasticity at low temperature
5.1 Bending test for insulation at low temperature T 60811-1-4 8.1
6 Heat shock test T 60811-3-1 9.1
Mechanical strength of completed cable
7.1 Bending test T 60227-2 3.2
7.2 Snatch test T 60227-2 3.3
8 Test of flame retardance T 60332-1
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.

60227-5 © IEC:2011 – 9 –
3 (Vacant)
4 Cord for indoor decorative lighting chains
4.1 Code designation
60227 IEC 43.
4.2 Rated voltage
300/300 V.
4.3 Construction
4.3.1 Conductor
Number of conductors: 1.
The conductor shall comply with the requirements given in IEC 60228 for Class 6 conductors.
4.3.2 Insulation
The insulation shall be polyvinyl chloride of the type PVC/D, it shall consist of two layers and
applied by dual extrusion around the conductor.
The outer layer of insulation shall be of a colour contrasting with that of the inner layer but shall
adhere to the inner layer.
The combined thickness of the inner and outer layer of insulation shall comply with the overall
thickness specified in Table 5, columns 3 and 4, but at no point the thickness of either layer
shall be less than the value specified in column 2.
The insulation resistance at 70 °C shall be not less than the values given in Table 5, column 7.
4.3.3 Cord identification
Preferred colour of outer layer: green.
4.3.4 Overall diameter
The mean overall diameter shall be within the limits given in Table 5, columns 5 and 6.
4.4 Tests
4.4.1 General
Compliance with the requirements of 4.3 shall be checked by inspection and by the tests given
in Table 6, and additionally by the test for long term resistance of insulation to d.c., as given in
4.4.2.
4.4.2 Long term resistance of insulation to d.c.
a) Test sample
Carry out the test on a sample of cable of 5 m length from which all coverings have been
removed. The cores of flat unsheathed cords shall not be separated.

– 10 – 60227-5 © IEC:2011
For cables having up to five cores, each core shall be tested. For multicore cables having more
than five cores, one core of each colour in the cable shall be tested, and where the number of
colours is less than 5, duplicate coloured cores shall be tested as necessary to bring the
number of cores tested up to a minimum of 5.
Take care to avoid damage to the core(s) during removal of the coverings.
b) Procedure
Immerse the sample in an aqueous solution of sodium chloride having a concentration of 10 g/l
and a temperature of (60 ± 5) °C, with a length of about 250 mm at each end of the sample
projecting above the solution. Connect the negative pole of a 220 V d.c. supply to the
conductor(s) of the sample and the positive pole to a copper electrode immersed in the
solution, for a period of 240 h.
c) Requirement
No breakdown of the insulation shall occur during the test and, after the test, the exterior of the
insulation shall show no sign of damage.
Discoloration of the insulation should be ignored.
4.4.3 (Vacant)
4.5 Guide to use
Maximum conductor temperature in normal use: 70 °C.
Table 3 – General data for type 60227 IEC 43
1 2 3 4 5 6 7
Nominal
Thickness of Overall Overall Minimum
cross-
a
each layer of insulation insulation insulation
Mean overall diameter
sectional area
insulation thickness thickness resistance at 70 °C
of conductor
Mininum Minimum Mean Lower Upper
value value value limit limit
mm mm mm mm mm MΩ × km
mm
0,5 0,2 0,6 0,7 2,3 2,7 0,014
0,75 0,2 0,6 0,7 2,4 2,9 0,012
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

60227-5 © IEC:2011 – 11 –
Table 4 – Tests for type 60227 IEC 43
1 2 3 4
Test method described in:
Category
Ref. No. Tests
a
of test
IEC Standard Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60227-2 2.1
1.2 Voltage test on completed cable at 2 000 V T, S 60227-2 2.3
1.3 Insulation resistance at 70 °C T 60227-2 2.4
1.4 Long term resistance of insulation to d.c. T 60227-5 4.4.2
2 Constructional/dimensional characteristics 60227-1
60227-2
2.1 Compliance with constructional provisions T, S 60227-1 Inspection and
manual tests
60227-5 4.3
2.2 Measurement of insulation thickness of inner layer T, S 60227-2 1.9
(minimum thickness only)
2.3 Measurement of insulation thickness of outer layer T, S 60227-2 1.9
(minimum thickness only)
b
2.4 Measurement of overall thickness T, S 60227-2 1.9
2.5 Measurement of overall diameter T, S 60227-2 1.11
Mechanical properties of insulation
b
3.1 Tensile test before ageing T 60811-1-1 9.1
b
3.2 Tensile test after ageing T 60811-1-2 8.1.3.1
b
3.3 Loss of mass test T 60811-3-2 8.1
b
4 Pressure test at high temperature T 60811-3-1 8
5 Elasticity at low temperature
b
5.1 Bend test for insulation T 60811-1-4 8.1
b
6 Heat shock test T 60811-3-1 9.1
7 Test of flame retardance T 60332-1 –
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.
b
Because of the simultaneous extrusion of the same compound for both layers of insulation, the composite layer

shall be tested as one layer and evaluated accordingly.

5 Light polyvinyl chloride sheathed cord
5.1 Code designation
60227 IEC 52.
5.2 Rated voltage
300/300 V.
5.3 Construction
5.3.1 Conductor
Number of conductors: 2 and 3.

– 12 – 60227-5 © IEC:2011
The conductors shall comply with the requirement given in IEC 60228 for class 5.
5.3.2 Insulation
The insulation shall be polyvinyl chloride compound of type PVC/D applied around each
conductor.
The insulation thickness shall comply with the specified value given in Table 5, column 2.
The insulation resistance shall be not less than the values given in Table 5, column 6.
5.3.3 Assembly of cores
Circular cord: the cores shall be twisted together.
Flat cord: the cores shall be laid parallel.
5.3.4 Sheath
The sheath shall be polyvinyl chloride compound of type PVC/ST 5 applied around the cores.
The sheath thickness shall comply with the specified value given in Table 5, column 3.
The sheath may fill the spaces between the cores, thus forming a filling, but it shall not
adhere to the cores. The assembly of cores may be surrounded by a separator, which shall
not adhere to the cores.
The assembly of circular cord shall have a practically circular cross-section.
5.3.5 Overall dimensions
The mean overall diameter of circular cords and the mean overall dimensions of flat cords shall
be within the limits given in Table 5, columns 4 and 5.
5.4 Tests
Compliance with the requirements of 5.3 shall be checked by inspection and by the tests given
in Table 6.
5.5 Guide to use
Maximum conductor temperature in normal use: 70 °C.
NOTE Other guidelines are under consideration.

60227-5 © IEC:2011 – 13 –
Table 5 – General data for type 60227 IEC 52
1 2 3 4 5 6
Number and nominal Thickness of Thickness of Mean overall Minimum insulation
a
cross-sectional area insulation sheath resistance at 70 °C
dimensions
of conductors
Specified value Specified value Lower Upper
limit limit
mm mm
mm mm mm
0,5 0,6 4,6 5,9 0,012
2 × 0,5
or or
3,0 × 4,9 3,7 × 5,9
0,5 0,6 4,9 6,3 0,010
2 × 0,75
or or
3,2 × 5,2 3,8 × 6,3
3 × 0,5 0,5 0,6 4,9 6,3 0,012
0,5 0,6 5,2 6,7 0,010
3 × 0,75
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

Table 6 – Tests for type 60227 IEC 52
1 2 3 4
Test method described in
Category
Ref. No. Test
a
of test
IEC Standard Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60227-2 2.1
1.2 Voltage test on cores at 1 500 V T, S 60227-2 2.3
1.3 Voltage test on completed cable at 2 000 V T, S 60227-2 2.2
1.4 Insulation resistance at 70 °C T 60227-2 2.4
2 Provisions covering constructional 60227-1
60227-2
and dimensional characteristics
2.1 Checking of compliance with constructional T, S 60227-1 Inspection and
provisions manual tests
2.2 Measurement of insulation thickness T, S 60227-2 1.9
2.3 Measurement of sheath thickness T, S 60227-2 1.10
2.4 Measurement of overall dimensions:
2.4.1 – mean value T, S 60227-2 1.11
2.4.2 – ovality T, S 60227-2 1.11
Mechanical properties of insulation
3.1 Tensile test before and after ageing T 60811-1-2 9.1
8.1
3.2 Loss of mass test T 60811-3-2 8.1
4 Mechanical properties of sheath
4.1 Tensile test before and after ageing T 60811-1-2 9.2
8.1
4.2 Loss of mass test T 60811-3-2 8.2
5 Pressure test at high temperature
5.1 Insulation T 60811-3-1 8.1
5.2 Sheath T 60811-3-1 8.2
Elasticity and impact strength at low temperature

– 14 – 60227-5 © IEC:2011
1 2 3 4
Test method described in
Category
Ref. No. Test
a
of test
IEC Standard Subclause
6.1 Bending test for insulation at low temperature T 60811-1-4 8.1
6.2 Bending test for sheath at low temperature T 60811-1-4 8.2
6.3 Impact test on completed cable at low temperature T 60811-1-4 8.5
Heat shock test
7.1 Insulation T 60811-3-1 9.1
7.2 Sheath T 60811-3-1 9.2
8 Mechanical strength of completed cable
8.1 Flexing test T 60227-2 3.1
9 Test of flame retardance T 60332-1
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.

6 Ordinary polyvinyl chloride sheathed cord
6.1 Code designation
60227 IEC 53.
6.2 Rated voltage
300/500 V.
6.3 Construction
6.3.1 Conductor
Number of conductors: 2, 3, 4 or 5.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
6.3.2 Insulation
The insulation shall be polyvinyl chloride compound of type PVC/D applied around each
conductor.
The insulation thickness shall comply with the specified value given in Table 7, column 2.
The insulation resistance shall be not less than the value given in Table 7, column 6.
6.3.3 Assembly of cores and fillers, if any
Circular cord: the cores and the fillers, shall be twisted together.
Flat cord: the cores shall be laid parallel.
For circular cord having two cores, the space between the cores shall be filled either by
separate fillers or by the sheath filling the interstices.
Any filler shall not adhere to the cores.

60227-5 © IEC:2011 – 15 –
6.3.4 Sheath
The sheath shall be polyvinyl chloride compound of type PVC/ST 5 applied around the cores.
The sheath thickness shall comply with the specified value given in Table 7, column 3.
The sheath may fill the spaces between the cores, thus forming a filling, but it shall not
adhere to the cores. The assembly of cores may be surrounded by a separator, which shall
not adhere to the cores.
The assembly of circular cords shall have a practically circular cross-section.
6.3.5 Overall dimensions
The mean overall diameter of circular cords and the mean overall dimensions of flat cords shall
be within the limits given in Table 7, columns 4 and 5.
Table 7 – General data for type 60227 IEC 53
1 2 3 4 5 6
Number and Minimum
nominal cross- Thickness of Thickness of Mean overall insulation
a
sectional area of insulation sheath dimensions resistance
conductors at 70 °C
Specified Specified
Lower limit Upper limit
value value MΩ × km
mm
mm mm
mm mm
0,6 0,8 5,7 7,2 0,011
2 × 0,75
or or
3,7 × 6,0 4,5 × 7,2
2 × 1 0,6 0,8 5,9 7,5 0,010
or or
3,9 × 6,2 4,7 × 7,5
0,7 0,8 6,8 8,6 0,010
2 × 1,5
2 × 2,5 0,8 1,0 8,4 10,6 0,009
2 × 4 0,8 1,1 9,7 12,1 0,007
0,6 0,8 6,0 7,6 0,011
3 × 0,75
0,6 0,8 6,3 8,0 0,010
3 × 1
0,7 0,9 7,4 9,4 0,010
3 × 1,5
0,8 1,1 9,2 11,4 0,009
3 × 2,5
3 × 4 0,8 1,1 10,3 12,8 0,007
4 × 0,75 0,6 0,8 6,6 8,3 0,011
0,6 0,9 7,1 9,0 0,010
4 × 1
0,7 1,0 8,4 10,5 0,010
4 × 1,5
0,8 1,1 10,1 12,5 0,009
4 × 2,5
0,8 1,2 11,5 14,3 0,007
4 × 4
5 × 0,75 0,6 0,9 7,4 9,3 0,011
5 × 1 0,6 0,9 7,8 9,8 0,010
5 × 1,5 0,7 1,1 9,3 11,6 0,010
0,8 1,2 11,2 13,9 0,009
5 × 2,5
0,8 1,3 12,8 15,9 0,007
5 × 4
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

– 16 – 60227-5 © IEC:2011
6.4 Tests
Compliance with the requirements of 6.3 shall be checked by inspection and by the tests given
in Table 8.
6.5 Guide to use
Maximum conductor temperature in normal use: 70 °C.
NOTE Other guidelines are under consideration.
Table 8 – Tests for type 60227 IEC 53
1 2 3 4
Test method described in
Category of
Ref. No. Test
test a
IEC standard Subclause
1 Electrical tests
1.1 Resistance of conductors T, S 60227-2 2.1
1.2 Voltage test on cores according to specified T, S 60227-2 2.3
insulation thickness:
1.2.1 – at 1 500 V up to and including 0,6 mm T 60227-2 2.3
1.2.2 – at 2 000 V exceeding 0,6 m T 60227-2 2.3
1.3 Voltage test on complete cable at 2 000 V T 60227-2 2.2
1.4 Insulation resistance at 70 °C T 60227-2 2.4
2 Provisions covering constructional  60227-1
and dimensional characteristics 60227-2
2.1 Checking of compliance with constructional T, S 60227-1 Inspection and
provisions manual tests
60227-2
2.2 Measurement of insulation thickness T, S 60227-2 1.9
2.3 Measurement of overall dimensions T, S 60227-2 1.10
2.4 Measurement of overall dimensions:
2.4.1 – mean value T, S 60227-2 1.11
2.4.2 – ovality T, S 60227-2 1.11
Mechanical properties of insulation
3.1 Tensile test before and after ageing T 60811-1-2 9.1
8.1
3.2 Loss of mass test T 60811-3-2 8.1
Mechanical properties of sheath
4.1 Tensile test before and after ageing T 60811-1-2 9.2
8.1
4.2 Loss of mass test T 60811-3-2 8.2
5 Test of non-contamination T 60811-1-2 8.1.4
6 Pressure test at high temperature
6.1 Insulation T 60811-3-1 8.1
6.2 Sheath T 60811-3-1 8.2
7 Elasticity and impact strength at low temperature
7.1 Bending test for insulation at low temperature T 60811-1-4 8.1
7.2 Bending test for sheath at low temperature T 60811-1-4 8.2
7.3 Impact test on completed cable at low temperature T 60811-1-4 8.5
8 Heat shock test
60227-5 © IEC:2011 – 17 –
1 2 3 4
Test method described in
Category of
Ref. No. Test
test a
IEC standard Subclause
8.1 Insulation T 60811-3-1 9.1
8.2 Sheath T 60811-3-1 9.2
9 Mechanical strength of completed cable
9.1 Flexing test T 60227-2 3.1
10 Test of flame retardance T 60332-1
a
All documents cited in this table refer to the dated editions that are listed in the normative references clause.

7 Heat-resistant light PVC-sheathed cord for a maximum conductor
temperature of 90 °C
7.1 Code designation
60227 IEC 56.
7.2 Rated voltage
300/300 V.
7.3 Construction
7.3.1 Conductor
Number of conductors: 2 and 3.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
7.3.2 Insulation
The insulation shall be polyvinyl chloride compound of type PVC/E applied around each
conductor.
The insulation thickness shall comply with the specified value given in Table 9, column 2.
The insulation resistance shall be not less than the values given in Table 9, column 6.
7.3.3 Assembly of cores
Circular cord: the cores shall be twisted together.
Flat cord: the cores shall be laid parallel.
7.3.4 Sheath
The sheath shall be polyvinyl chloride compound of type PVC/ST10, applied around the cores.
The sheath thickness shall comply with the specified value given in Table 9, column 3.
The sheath may fill the spaces between the cores, thus forming a filling, but it shall not adhere
to the cores. The assembly of cores may be surrounded by a separator, which shall not adhere
to the cores.
– 18 – 60227-5 © IEC:2011
The assembly of circular cord shall have a practically circular cross-section.
7.3.5 Overall dimensions
The mean overall diameter of circular cords and the mean overall dimensions of flat cords shall
be within the limits given in Table 9, columns 4 and 5.
7.4 Tests
Compliance with the requirements of 7.3 shall be checked by inspection and by the tests given
in Table 10.
7.5 Guide to use
Maximum conductor temperature in normal use: 90 °C.
NOTE Other guidelines are under consideration.
Table 9 – General data for type 60227 IEC 56
1 2 3 4 5 6
Number and Insulation Sheath Minimum
a
Mean overall dimensions
nominal cross- thickness thickness insulation
sectional area of
resistance at 90 °C
Specified value Specified value Lower limits Upper limits
conductors
mm mm mm mm MΩ × km
mm
2 × 0,5 0,5 0,6 4,6 5,9 0,012
or or
3,0 × 4,9 3,7 × 5,9
2 × 0,75 0,5 0,6 0,010
4,9 6,3
or or
3,2 × 5,2 3,8 × 6,3
3 × 0,5
4,9 6,3
0,5 0,6
0,012
3 × 0,75
5,2 6,7
0,010
0,5 0,6
a
The mean overall dimensions have been calculated in accordance with IEC 60719.

60227-5 © IEC:2011 – 19 –
Table 10 – Tests for type 60227 IEC 56
1 2 3 4 5
Test methods described in
Reference Category
Test
IEC
No. of test
Subclause
a
standard
Electrical tests
1.1 Resistance of conductors T,S 60227-2 2.1
1.2 Voltage test on completed cable at 2 000 V T,S 60227-2 2.2
1.3 Voltage test on cores at 1 500 V T 60227-2 2.3
1.4 lnsulation resistance at 90 °C T 60227-2 2.4
2 Provisions covering constructional and
dimensional characteristics
2.1 Checking of compliance with constructional T,S 60227-1 Inspection and
provisions  manual tests
2.2 Measurement of thickness of insulation T,S 60227-2 1.9
...