IEC 60840

Power cables with extruded insulation and their accessories for rated voltages above 30 kV (<i>U</i>_m = 36 kV) up to 150 kV (<i>U</i>_m = 170 kV) - Test methods and requirements

IEC 60840:2011 is available as IEC 60840:2011 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60840:2011 specifies test methods and requirements for power cable systems, cables alone and accessories alone, for fixed installations     and for  rated voltages above 30 kV (U_m = 36 kV) up to   and including 150 kV (U_m = 170 kV). The requirements apply to single-core cables and to individually screened three-core cables and to their accessories for usual conditions of installation          and operation, but not to special  cables and their accessories,  such as submarine cables, for which modifications to the standard tests may be necessary or special test    conditions may  need to be   devised. This standard does not cover transition joints between cables with extruded insulation and paper insulated cables. The significant technical change with respect to the previous edition is     as follows:
- introduction of a prequalification test procedure for cables with high electrical stresses and tested as a cable system including accessories.
NOTE: For a more detailed history of events leading up to this fourth edition, see the Introduction.

Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées supérieures à 30 kV (<i>U</i>_m = 36 kV) et jusqu'à 150 kV (<i>U</i>_m = 170 kV) - Méthodes et exigences d'essai

IEC 60840:2011 est disponible sous forme de IEC 60840:2011 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

IEC 60840:2011 spécifie les méthodes et les exigences d'essai applicables aux systèmes de câbles d'énergie, câbles seuls et accessoires seuls, pour installations fixes, pour des tensions assignées supérieures à 30 kV (U_m = 36 kV) et jusqu'à 150 kV (U_m = 170 kV) compris. Les exigences sont applicables aux câbles unipolaires, aux câbles tripolaires à écran individuel et à leurs accessoires, pour des conditions habituelles d'installation et de fonctionnement, mais ne le sont pas à des câbles spéciaux et à leurs accessoires, comme les câbles sous-marins,  pour lesquels il peut être nécessaire d'apporter des modifications aux essais normaux ou d'élaborer des conditions d'essai particulières. Les jonctions assurant le raccordement des câbles à isolant extrudé aux câbles isolés au papier ne sont pas couvertes par la présente norme. La modification technique principale par rapport à l'édition précédente est la suivante:
- introduction d'une procédure d'essai de préqualification pour les câbles avec de hautes tensions électriques comme un système de câble incluant des accessoires.
  NOTE: Voir l'Introduction pour un historique plus complet sur les evenements qui conduissaient à la publication de cette quatrième édition.

Elektroenergetski kabli z ekstrudirano izolacijo in njihov pribor za naznačene napetosti nad 30 kV (Um = 36 kV) do 150 kV (Um = 170 kV) - Preskusne metode in zahteve

Standard IEC 60840:2011 določa preskusne metode in zahteve za sisteme močnostnih kablov, same kable in sam pribor, za fiksne namestitve in za nazivne napetosti nad 30 kV do vključno 150 kV. Zahteve se uporabljajo za enožilne kable in za individualno zaslonjene trižilne kable ter za njihov pribor za običajne pogoje montaže in delovanja, ne pa za posebne kable in njihov pribor, kot so podvodni kabli, za katere so morda potrebne spremembe standardnih preskusov ali pa je treba zasnovati posebne preskusne pogoje. Ta standard ne zajema prehodnih spojk med kabli z ekstrudirano izolacijo in papirnato izoliranih kablov. Znatna tehnična sprememba glede na predhodno različico je naslednja: vpeljava predizbirnega preskusnega postopka za kable z visoko električno obremenitvijo, preizkušene kot kabelski sistem, vključno s priborom.
OPOMBA: Za podrobnejšo zgodovino dogodkov, na podlagi katerih je nastala ta četrta izdaja, glej poglavje Uvod.

General Information

• Status: Not Published
• ICS: 29.060.20 - Cables
• Technical Committee: TA 20 - Analogue and digital audio
• Current Stage: PPUB - Publication issued
• Start Date: 23-Nov-2011
• Ref Project: SIST IEC 60840:2018 - 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

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2018
(OHNWURHQHUJHWVNLNDEOL]HNVWUXGLUDQRL]RODFLMRLQQMLKRYSULERU]DQD]QDþHQH
QDSHWRVWLQDGN98P N9GRN98P N93UHVNXVQHPHWRGHLQ
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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
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
Ta slovenski standard je istoveten z: IEC 60840
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
®
Edition 4.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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
Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions
assignées supérieures à 30 kV (U = 36 kV) et jusqu'à 150 kV (U = 170 kV) –
m m
Méthodes et exigences d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 29.060.20 ISBN 978-2-88912-752-8

– 2 – 60840 © IEC:2011
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references. 9
3 Terms and definitions . 10
3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.) . 10
3.2 Definitions concerning tests . 11
3.3 Other definitions . 11
4 Voltage designations and materials . 12
4.1 Rated voltages . 12
4.2 Cable insulating materials . 12
4.3 Cable metal screens/sheaths . 12
4.4 Cable oversheathing materials . 12
5 Precautions against water penetration in cables . 12
6 Cable characteristics . 13
7 Accessory characteristics. 13
8 Test conditions . 14
8.1 Ambient temperature . 14
8.2 Frequency and waveform of power frequency test voltages . 14
8.3 Waveform of lightning impulse test voltages . 14
8.4 Relationship of test voltages to rated voltages . 14
8.5 Determination of the cable conductor temperature . 14
9 Routine tests on cables and on the main insulation of prefabricated accessories . 15
9.1 General . 15
9.2 Partial discharge test . 15
9.3 Voltage test . 15
9.4 Electrical test on oversheath of the cable . 15
10 Sample tests on cables . 16
10.1 General . 16
10.2 Frequency of tests . 16
10.3 Repetition of tests . 16
10.4 Conductor examination . 16
10.5 Measurement of electrical resistance of conductor and metal screen . 16
10.6 Measurement of thickness of cable insulation and oversheath . 17
10.6.1 General . 17
10.6.2 Requirements for the insulation . 17
10.6.3 Requirements for the cable oversheath . 17
10.7 Measurement of thickness of metal sheath. 18
10.7.1 Lead or lead alloy sheath . 18
10.7.2 Plain or corrugated aluminium sheath . 18
10.8 Measurement of diameters . 19
10.9 Hot set test for XLPE, EPR and HEPR insulations . 19
10.9.1 Procedure . 19
10.9.2 Requirements . 19
10.10 Measurement of capacitance. 19

60840 © IEC:2011 – 3 –
10.11 Measurement of density of HDPE insulation . 19
10.11.1 Procedure . 19
10.11.2 Requirements . 19
10.12 Lightning impulse voltage test . 19
10.13 Water penetration test. 20
10.14 Tests on components of cables with a longitudinally applied metal tape or
foil, bonded to the oversheath . 20
11 Sample tests on accessories . 20
11.1 Tests on components . 20
11.2 Tests on complete accessory . 20
12 Type tests on cable systems . 20
12.1 General . 20
12.2 Range of type approval . 21
12.3 Summary of type tests . 21
12.4 Electrical type tests on complete cable systems . 22
12.4.1 Test voltage values . 22
12.4.2 Tests and sequence of tests . 22
12.4.3 Bending test . 23
12.4.4 Partial discharge tests . 24
12.4.5 Tan δ measurement . 24
12.4.6 Heating cycle voltage test . 24
12.4.7 Lightning impulse voltage test followed by a power frequency voltage
test . 25
12.4.8 Examination . 25
12.4.9 Resistivity of semi-conducting screens . 25
12.5 Non-electrical type tests on cable components and on complete cable . 26
12.5.1 Check of cable construction . 26
12.5.2 Tests for determining the mechanical properties of insulation before
and after ageing . 26
12.5.3 Tests for determining the mechanical properties of oversheaths
before and after ageing . 27
12.5.4 Ageing tests on pieces of complete cable to check compatibility of
materials . 27
12.5.5 Loss of mass test on PVC oversheaths of type ST . 28
12.5.6 Pressure test at high temperature on oversheaths . 28
12.5.7 Test on PVC oversheaths (ST ST ) at low temperature . 28
1, 2
12.5.8 Heat shock test for PVC oversheaths (ST and ST ) . 29
1 2
12.5.9 Ozone resistance test for EPR and HEPR insulations . 29
12.5.10 Hot set test for EPR, HEPR and XLPE insulations . 29
12.5.11 Measurement of density of HDPE insulation . 29
12.5.12 Measurement of carbon black content of black PE oversheaths (ST
and ST ). 29
12.5.13 Test under fire conditions . 29
12.5.14 Water penetration test . 30
12.5.15 Tests on components of cables with a longitudinally applied metal
tape or foil, bonded to the oversheath . 30
12.5.16 Shrinkage test for PE, HDPE and XLPE insulations . 30
12.5.17 Shrinkage test for PE oversheaths (ST and ST ) . 30
3 7
12.5.18 Determination of hardness of HEPR insulation . 30
12.5.19 Determination of the elastic modulus of HEPR insulation . 31

– 4 – 60840 © IEC:2011
13 Prequalification test of the cable system. 31
13.1 General and range of prequalification test approval . 31
13.2 Prequalification test on complete system . 32
13.2.1 Summary of prequalification tests . 32
13.2.2 Test voltage values . 32
13.2.3 Test arrangement . 32
13.2.4 Heating cycle voltage test . 33
13.2.5 Lightning impulse voltage test . 34
13.2.6 Examination . 34
13.3 Tests for the extension of the prequalification of a cable system. 34
13.3.1 Summary of the extension of prequalification test . 34
13.3.2 Electrical part of the extension of prequalification tests on complete
cable system. 34
14 Type tests on cables . 36
14.1 General . 36
14.2 Range of type approval . 36
14.3 Summary of type tests . 37
14.4 Electrical type tests on completed cables . 37
15 Type tests on accessories . 38
15.1 General . 38
15.2 Range of type approval .
...