IEC 60840:2020/AMD1:2023
(Amendment)Amendment 1 - Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um= 36 kV) up to 150 kV (Um = 170 kV) - Test methods and requirements
Amendment 1 - Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um= 36 kV) up to 150 kV (Um = 170 kV) - Test methods and requirements
Amendement 1 - Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées supérieures à 30 kV (Um = 36 kV) et jusqu'à 150 kV (Um = 170 kV) - Méthodes et exigences d'essai
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IEC 60840 ®
Edition 5.0 2023-06
INTERNATIONAL
STANDARD
AMENDMENT 1
Power cables with extruded insulation and their accessories for rated voltages
above 30 kV (U = 36 kV) up to 150 kV (U = 170 kV) – Test methods and
m m
requirements
IEC 60840:2020-05/AMD1:2023-06(en)
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IEC 60840 ®
Edition 5.0 2023-06
INTERNATIONAL
STANDARD
AMENDMENT 1
Power cables with extruded insulation and their accessories for rated voltages
above 30 kV (U = 36 kV) up to 150 kV (U = 170 kV) – Test methods and
m m
requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20 ISBN 978-2-8322-6985-5
– 2 – IEC 60840:2020/AMD1:2023
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER CABLES WITH EXTRUDED INSULATION AND THEIR
ACCESSORIES FOR RATED VOLTAGES ABOVE 30 KV (U = 36 KV)
m
UP TO 150 KV (U = 170 KV) – TEST METHODS AND REQUIREMENTS
m
AMENDMENT 1
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 this end and
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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 document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 60840:2020 has been prepared by IEC technical committee 20: Electric
cables.
The text of this Amendment is based on the following documents:
Draft Report on voting
20/2100/FDIS 20/2107/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.
© IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
___________
2 Normative references
Add the following new references:
IEC 60060-3, High-voltage test techniques – Part 3: Definitions and requirements for on-site
testing
IEC 60137, Insulated bushings for alternating voltages above 1 000 V
IEC 60332-1-3, Tests on electric and optical fibre cables under fire conditions – Part 1-3: Test
for vertical flame propagation for a single insulated wire or cable – Procedure for determination
of flaming droplets/particles
IEC 60754-3, Test on gases evolved during combustion of materials from cables – Part 3:
Measurement of low level of halogen content by ion chromatography
IEC 62155, Hollow pressurized and unpressurized ceramic and glass insulators for use in
electrical equipment with rated voltages greater than 1 000 V
3 Terms and definitions
3.2.4
prequalification test
Add "PQ test" as a second preferred term.
3.2.5
extension of prequalification test
Add "EQ test" as a second preferred term.
3.3.2
nominal electrical stress
In the existing Note 2 to entry, delete "Nominal".
– 4 – IEC 60840:2020/AMD1:2023
© IEC 2023
3.3.8
joint with screen or metal sheath interruption
Replace the existing entry 3.3.8 with the following new entry 3.3.8:
3.3.8
maximum service pressure
MSP
highest difference between the maximum absolute internal pressure, when the equipment (of
which a composite hollow insulator is a part) is carrying its rated normal current at maximum
operational temperature and the normal outside pressure
Insert, between the existing entry 3.3.9 and entry 3.3.10 the following new entry 3.3.11:
3.3.11
joint with screen or metal sheath interruption
joint, where the metal screen/sheath and insulation screen of the cable are electrically
interrupted
3.3.10
termination with sectionalizing insulation
Replace the existing entry 3.3.10 with the following new entry 3.3.10:
3.3.10
termination with an insulated screen
termination where the metal screen/sheath and insulation screen of the cable are electrically
interrupted to the ground
5 Precautions against water penetration in cables
Replace the existing first paragraph with the following new paragraph:
When cable systems are installed in water or in the ground, in locations with a risk of water
ingress or corrosion, a radial water impermeable barrier is recommended.
6 Cable characteristics
Replace the existing text of list item c), excluding the NOTE, with the following new text:
c) Fire performance: if ST , ST or ST oversheath material is used (see 4.4 and Table 2),
1 2 12
then the subclauses of 12.5.14.3, if any, to which compliance is claimed, shall be declared.
Add, in list item n), after "d is the declared nominal inner diameter of the insulation, in mm;"
ii
the following new text:
U is the value in item b) above in kV;
© IEC 2023
7 Accessories characteristics
7.2 Composite insulators for outdoor cable terminations
Replace Subclause 7.2, including its title, with the following new Subclause 7.2:
7.2 Insulators for outdoor cable terminations
Insulators for outdoor cable terminations shall comply with the requirements given in Table 10
for Level I or II maximum cantilever operating load in service (or MML in the case of composite
insulators). Level I refers to a normal load and shall be generally applied, unless a purchaser
specifies a heavy load of Level II. Alternatively, a different value of maximum cantilever
operating load or MML may be agreed between the purchaser and manufacturer. These tests
are not applicable for cable terminations which are not subjected to cantilever stresses during
operation, e.g. flexible terminations.
7.3 Accessory characteristics to be declared
Integrate the introductory sentence as part of list item a) as follows:
a) The following characteristics shall be declared by the manufacturer: cables used for testing
accessories shall be correctly identified as in Clause 6;
Add, before the first bullet point of list item e), the following two new bullet points:
• design pressure for the outside of the termination insulator (see IEC 62271-209);
• type of insulating gas to be used in the cable connection enclosure (SF6 or details of
alternative gas type).
Add, at the end of the second bullet point of list item f), after "(MSP)", the word "value" and add
the following new list item g):
g) additional requirements for ceramic outdoor termination insulators:
• the maximum cantilever operating load in service;
• for insulators which will be pressurized in service, the design pressure.
8 Test conditions
8.3 Waveform of lightning impulse test voltages
Replace the existing paragraph with the following new paragraph:
The waveforms of lightning impulse tests shall be as given in IEC 60230.
Add, at the end of the existing Subclause 8.5, the following new Subclause 8.6:
8.6 Tests on gas immersed terminations
Electrical tests on gas immersed terminations shall be carried out in a cable connection
enclosure with the diameter specified in IEC 62271-209 for the relevant value of rated voltage.
The gas pressure requirements for electrical type tests given in IEC 62271-209 shall also be
complied with.
– 6 – IEC 60840:2020/AMD1:2023
© IEC 2023
9 Routine tests on cables and accessories
9.4 Electrical test on oversheath of the cable
Replace the existing paragraph with the following new paragraph:
Subject to agreement between the purchaser and manufacturer, the cable oversheath shall be
subjected to the electrical test specified in Clause 3 of IEC 60229:2007.
10 Sample tests on cables
10.5 Measurement of electrical resistance of conductor and metal screen
Replace the existing second paragraph with the following new paragraph and bullet points:
The DC resistance of the conductor or metal screen/sheath shall be corrected to a temperature
of 20 °C and a 1 km length of cable in accordance with the formulae and factors given in
IEC 60228:
• for a conductor or metal screen/sheath of copper or aluminium, using the temperature
coefficients given in IEC 60228 or
• for a metal screen/sheath other than copper or aluminium, using the temperature
coefficients given in IEC 60287-1-1.
10.7.2.3 Ring method
Replace the first two sentences of the first paragraph with the following new sentence:
The measurements shall be made with a micrometer having ball noses of radii of approximately
3 mm.
10.12 lightning impulse voltage test
Replace the fifth paragraph beginning with "The lightning impulse voltage…" with the following
two new paragraphs:
The lightning impulse voltage shall be applied, according to the procedure given in IEC 60230,
after the compl
...
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