IEC 60502-1:2021

IEC 60502-1 ®
Edition 3.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Power cables with extruded insulation and their accessories for rated voltages
from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) –
Part 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)

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IEC 60502-1 ®
Edition 3.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Power cables with extruded insulation and their accessories for rated voltages

from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) –

Part 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20 ISBN 978-2-8322-9427-7

– 2 – IEC 60502-1:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 9
4 Voltage designations and materials . 10
5 Conductors . 13
6 Insulation . 13
7 Assembly of multicore cables, inner coverings and fillers . 15
8 Metallic layers for single-core and multicore cables . 17
9 Metallic screen . 17
10 Concentric conductor . 18
11 Metallic sheath . 18
12 Metallic armour . 19
13 Oversheath . 22
14 Test conditions . 23
15 Routine tests . 24
16 Sample tests . 25
17 Type tests, electrical. 28
18 Type tests, non-electrical . 30
19 Electrical tests after installation . 37
Annex A (normative) Fictitious calculation method for determination of dimensions of
protective coverings . 52
Annex B (normative) Rounding of numbers . 58
Annex C (normative) Determination of hardness of HEPR insulation . 59
Bibliography . 61

Figure C.1 – Test on surfaces of large radius of curvature . 60
Figure C.2 – Test on surfaces of small radius of curvature . 60

Table 1 – Recommended rated AC voltages U . 11
Table 2 – Insulating compounds . 11
Table 3 – Maximum conductor temperatures for different types of insulating compound . 12
Table 4 – Sheathing compounds and maximum conductor temperatures for different
types of sheathing compound . 13
Table 5 – Nominal thickness of PVC/A insulation . 14
Table 6 – Nominal thickness of cross-linked polyethylene (XLPE) insulation . 14
Table 7 – Nominal thickness of ethylene propylene rubber (EPR) and hard ethylene
propylene rubber (HEPR) insulation . 15
Table 8 – Thickness of extruded inner covering . 16
Table 9 – Nominal diameter of round armour wires . 21
Table 10 – Nominal thickness of armour tapes . 21
Table 11 – Routine test voltages . 25

Table 12 – Number of samples for sample tests . 26
Table 13 – Electrical type test requirements for insulating compounds . 38
Table 14 – Non-electrical type tests (see Tables 15 to 23) . 39
Table 15 – Test requirements for mechanical characteristics of insulating compounds
(before and after ageing) . 40
Table 16 – Test requirements for particular characteristics of PVC insulating
compounds . 41
Table 17 – Test requirements for particular characteristics of various cross-linked
insulating compounds . 43
Table 18 – Test requirements for mechanical characteristics of sheathing compounds
(before and after ageing) . 45
Table 19 – Test requirements for particular characteristics of PVC sheathing
compounds . 46
Table 20 – Test requirements for particular characteristics of thermoplastic PE
sheathing compounds . 48
Table 21 – Test requirements for particular characteristics of halogen free sheathing
compounds . 48
Table 22 – Test requirements for particular characteristics of elastomeric sheathing
compounds . 50
Table 23 – Test methods and requirements for halogen free compounds . 51
Table A.1 – Fictitious diameter of conductor . 53
Table A.2 – Assembly coefficient k for laid-up cores . 54
Table A.3 – Increase of diameter for concentric conductors and metal screens . 55
Table A.4 – Increase of diameter for additional bedding . 57

– 4 – IEC 60502-1:2021 RLV © IEC 2021
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 1: Cables for rated voltages of 1 kV
(U = 1,2 kV) and 3 kV (U = 3,6 kV)
m m
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