IEC 60502-4:2023

Power cables with extruded insulation and their accessories for rated voltages from 1 kV (<em>U</em>_m = 1,2 kV) up to 30 kV (<em>U</em>_m = 36 kV) - Part 4: Test requirements on accessories for cables with rated voltages from 6 kV (<em>U</em>_m = 7,2 kV) up to 30 kV (<em>U</em>_m = 36 kV)

IEC 60502-4:2023 specifies the test requirements for type testing of accessories for power cables with rated voltages from 3,6/6 (7,2) kV up to 18/30 (36) kV, complying with IEC 60502‑2 or other relevant cable standards.
Accessories for special applications, such as aerial cables, submarine or ship cables or hazardous situations (explosive environments, fire-resistant cables or seismic conditions), are not included.
It is not necessary to repeat these tests, once successfully completed, unless changes are made in the materials, design or manufacturing process which can affect the performance characteristics.
Test methods are included in IEC 61442.

Câbles d'énergie à isolant extrudé et leurs accessoires pour des tensions assignées de 1 kV (U_m = 1,2 kV) à 30 kV (U_m = 36 kV) - Partie 4: Exigences d'essai pour accessoires de câbles de tensions assignées de 6 kV (U_m = 7,2 kV) à 30 kV (U_m = 36 kV)

General Information

• Status: Published
• Publication Date: 14-Nov-2023
• ICS: 29.060.20 - Cables
• Technical Committee: TC 20 - Electric cables
• Drafting Committee: WG 16 - TC 20/WG 16
• Current Stage: PPUB - Publication issued
• Start Date: 24-Nov-2023
• Completion Date: 15-Nov-2023

Relations

• Revises: IEC 60502-4:2010 - Power cables with extruded insulation and their accessories for rated voltages from 1 kV (U_m = 1,2 kV) up to 30 kV (U_m = 36 kV) - Part 4: Test requirements on accessories for cables with rated voltages from 6 kV (U_m = 7,2 kV) up to 30 kV (U_m = 36 kV)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60502-4 ®
Edition 4.0 2023-11
INTERNATIONAL
STANDARD
Power cables with extruded insulation and their accessories for rated voltages
from 1 kV (U = 1,2 kV) up to 30 kV (U = 36 kV) –
m m
Part 4: Test requirements on accessories for cables with rated voltages from
6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
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IEC 60502-4 ®
Edition 4.0 2023-11
INTERNATIONAL
STANDARD
Power cables with extruded insulation and their accessories for rated voltages

from 1 kV (U = 1,2 kV) up to 30 kV (U = 36 kV) –
m m
Part 4: Test requirements on accessories for cables with rated voltages from

6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20  ISBN 978-2-8322-7701-0

– 2 – IEC 60502-4:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Types of accessories . 9
5 Voltage designations and maximum conductor temperatures . 9
5.1 Rated voltages . 9
5.2 Maximum conductor temperatures . 9
6 Components . 9
6.1 Connectors . 9
6.2 Materials . 9
7 Assembly of accessories to be tested . 10
7.1 Identification . 10
7.1.1 Cables . 10
7.1.2 Connectors . 10
7.1.3 Accessories . 10
7.2 Installation and connections . 10
7.2.1 General . 10
7.2.2 Non-range-taking terminations, joints and stop ends . 10
7.2.3 Range-taking terminations, joints and stop ends . 11
7.2.4 Separable connectors . 11
7.2.5 Assembly . 12
7.2.6 Conditioning . 12
7.2.7 Terminations . 12
7.2.8 Terminal boxes . 12
7.2.9 Joints and stop ends . 13
7.2.10 Separable connectors . 13
7.2.11 Set-up . 13
7.2.12 Test arrangements and number of samples . 13
8 Range of approval . 13
8.1 General . 13
8.2 Cable . 14
8.3 Three-core to single-core accessory . 14
8.4 Non-range-taking terminations, joints and stop ends . 15
8.5 Range-taking terminations, joints and stop ends . 15
8.6 Terminations in terminal boxes . 16
8.7 Separable connectors . 16
9 Test sequences . 16
9.1 General . 16
9.2 Dynamic short-circuit performance . 17
10 Test results . 17
10.1 General remarks . 17
10.2 Test reports . 18
10.3 Failures . 18
10.3.1 Accessory failure . 18
10.3.2 Cable failure . 18

10.3.3 Bushing failure. 18
11 Visual examination . 19
Annex A (normative) Identification of test cable . 34
Annex B (normative) Identification of connector . 35
Annex C (normative) Visual examination . 36
C.1 Method . 36
C.2 Examination sheet . 36
Bibliography . 37

Figure 1 – Test arrangements and number of samples for terminations (see Table 9) . 29
Figure 2 – Test arrangements and number of samples for straight, branch or loop joints
(see Table 10) . 30
Figure 3 – Test arrangements and number of samples for stop ends (see Table 11) . 31
Figure 4 – Test arrangements and number of samples for screened deadbreak
separable connectors (see Table 12) . 32
Figure 5 – Test arrangements and number of samples for unscreened deadbreak
separable connectors (see Table 13) . 33

Table 1 – Compliance and qualification scheme for non-range-taking terminations,
joints and stop ends . 11
Table 2 – Compliance and qualification scheme for range-taking terminations, joints,

and stop ends . 11
Table 3 – Test cable conductor cross-sections for separable connectors . 12
Table 4 – Range of approval for cable insulation . 14
Table 5 – Extension of compliance from a three-core accessory to a single-core
accessory of the same design . 15
Table 6 – Extension of compliance and qualification scheme for non-range-taking
terminations, joints and stop ends . 15
Table 7 – Extension of compliance and qualification scheme for range-taking

terminations, joints, and stop ends . 16
Table 8 – Test sequences . 17
Table 9 – Test sequences and requirements for terminations . 20
Table 10 – Test sequences and requirements for straight, branch or loop joints . 21
Table 11 – Test sequences and requirements for stop ends . 22
Table 12 – Test sequences and requirements for screened deadbreak separable
connectors . 23
Table 13 – Test sequences and requirements for unscreened separable connectors
(excluding shrouded terminations) . 24
Table 14 – Additional tests for smaller conductor cross-sectional areas . 25
Table 15 – Additional tests for separable connector compliance extension to largest
cable cross-section . 26
Table 16 – Summary of tests . 27
Table 17 – Summary of test voltages (see Clause 9) . 28

– 4 – IEC 60502-4:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER CABLES WITH EXTRUDED INSULATION AND
THEIR ACCESSORIES FOR RATED VOLTAGES FROM
1 KV (U = 1,2 KV) UP TO 30 KV (U = 36 KV) –
m m
Part 4: Test requirements on accessories for cables with
rated voltages from 6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
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
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparatio
...