IEC TS 61936-0:2023

IEC TS 61936-0 ®
Edition 1.0 2023-05
TECHNICAL
SPECIFICATION
Power installations exceeding 1 kV AC and 1,5 kV DC –
Part 0: Principles to be observed in the design and erection of high voltage
installations – Safety of high voltage installations
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IEC TS 61936-0 ®
Edition 1.0 2023-05
TECHNICAL
SPECIFICATION
Power installations exceeding 1 kV AC and 1,5 kV DC –

Part 0: Principles to be observed in the design and erection of high voltage

installations – Safety of high voltage installations

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020; 29.080.01 ISBN 978-2-8322-6946-6

– 2 – IEC TS 61936-0:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General requirements for design, construction, operation and maintenance . 15
4.1 General . 15
4.2 Basic requirements during faults . 15
4.3 Danger signs and labelling . 15
4.4 Protection, automation, and auxiliary systems . 15
4.5 Considerations of design to ensure maintainability, constructability, and
operability . 15
5 Protection against electric shock . 16
5.1 General . 16
5.2 Normal conditions . 16
5.3 Single-fault conditions . 16
5.3.1 General . 16
5.3.2 Protection by independent protective provisions . 17
5.4 Protective provisions (elements of protective measures) . 17
5.4.1 General . 17
5.4.2 Basic protection (protection against direct contact) . 17
5.4.3 Provisions for fault protection (protection against indirect contact) . 19
5.5 Protective measures . 21
5.5.1 General . 21
5.5.2 Protection by manual disconnection of supply . 22
5.5.3 Protection by automatic disconnection of supply . 22
5.5.4 Protection by earthed protective equipotential bonding . 22
5.5.5 Protection by limiting touch voltage . 23
6 Protection against thermal hazards . 23
6.1 General . 23
6.2 Normal conditions . 23
6.2.1 General . 23
6.2.2 Protection against overload . 23
6.3 Single fault conditions . 24
6.3.1 General . 24
6.3.2 Protection against short circuit currents . 24
6.3.3 Protection against arc faults . 24
6.3.4 Protection against fire hazard . 25
7 Protection against mechanical hazards . 26
7.1 General . 26
7.2 Sources of mechanical stress/load . 26
7.2.1 General . 26
7.2.2 Load cases to be considered for design . 26
7.3 Withstand loads due to arc-faults and explosions . 27

8 Protection against voltage and frequency deviations hazards . 27
8.1 Overvoltage withstand and protection . 27
8.2 Undervoltage protection . 28
8.3 Over- and underfrequency . 28
9 Induced potentials to telecommunication and other infrastructure . 28
10 Electric and magnetic fields . 28
Bibliography . 29

Figure 1 – Relationship of IEC 61936-0 to other IEC standards . 6

– 4 – IEC TS 61936-0:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER INSTALLATIONS EXCEEDING 1 kV AC AND 1,5 kV DC –

Part 0: Principles to be observed in the design and erection of high
voltage installations – Safety of high voltage installations

FOREWORD
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IEC TS 61936-0 has been prepared by technical committee 99: Insulation co-ordination and
system engineering of high voltage electrical power installations above 1,0 kV AC and
1,5 kV DC. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
99/375/DTS 99/404/RVDTS
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 Technical Specification is English.

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 https://www.iec.ch/members_experts/refdocs. The main document types developed by IEC
are described in greater detail at https://www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 61936 series, published under the general title Power installations
exceeding 1 kV AC and 1,5 kV DC, can be found on the IEC website.
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.
– 6 – IEC TS 61936-0:2023 © IEC 2023
INTRODUCTION
The scope of TC 99 is the standardisation of insulation co-ordination for hig
...