IEC 60077-2:2017

Railway applications - Electric equipment for rolling stock - Part 2: Electrotechnical components - General rules

IEC 60077-2:2017 provides general rules for all electrotechnical components installed in power circuits, auxiliary circuits, control and indicating circuits, etc., on railway rolling stock. The purpose of this document is to adapt the general rules given in IEC 60077-1 to all electrotechnical components for rolling stock, in order to obtain uniformity of requirements and tests for the corresponding range of components. This new edition includes the following main technical changes with regard to the previous edition:
- short circuit breaking capacity;
- rated short-time withstand current;
- critical currents range;
- specification of climatic conditions.
This standard is to be read in conjunction with IEC 60077-1:2017.

Applications ferroviaires - Equipements électriques du matériel roulant - Partie 2: Composants électrotechniques - Règles générales

L’IEC 60077-2:2017 donne les règles générales applicables à tous les composants électrotechniques installés dans les circuits de puissance, circuits auxiliaires, circuits de commande et de contrôle, etc., installés sur le matériel roulant ferroviaire. Le présent document a pour but d'adapter les règles générales données dans l’IEC 60077-1 aux composants électrotechniques du matériel roulant afin d'harmoniser les exigences et les essais à la gamme de composants correspondante. Cette nouvelle édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- pouvoir de coupure en court-circuit;
- courant assigné de courte durée admissible;
- plage de courants critiques;
- spécification des conditions climatiques.
Cette norme doit être lue conjointement avec l'IEC 60077-1:2017.

General Information

• Status: Published
• Publication Date: 27-Jul-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: TC 9 - Electrical equipment and systems for railways
• Drafting Committee: MT 60077 - TC 9/MT 60077
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2017
• Completion Date: 28-Jul-2017

Relations

• Revises: IEC 60077-2:1999 - Railway applications - Electric equipment for rolling stock - Part 2: Electrotechnical components - General rules
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60077-2 ®
Edition 2.0 2017-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electric equipment for rolling stock –
Part 2: Electrotechnical components – General rules

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 60077-2 ®
Edition 2.0 2017-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electric equipment for rolling stock –

Part 2: Electrotechnical components – General rules

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 45.060.01 ISBN 978-2-8322-4678-8

– 2 – IEC 60077-2:2017 RLV © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope and object . 6
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Components . 8
3.2 Component parts . 10
3.3 Operational features . 12
3.4 Abbreviated terms . 15
4 Classification . 15
5 Characteristics . 16
5.1 List of characteristics . 16
5.2 Type of component . 16
5.3 Rated and limiting values for the main circuit . 16
5.3.1 General . 16
5.3.2 Rated voltages . 16
5.3.3 Rated currents . 16
5.3.4 Rated time constants (for DC switchgear) . 17
5.3.5 Rated power factor (for AC switchgear) . 17
5.4 Operational frequencies . 17
5.5 Component categories . 18
5.6 Electric control circuits . 18
5.7 Pneumatic control circuits . 18
5.8 Manual control . 19
5.9 Electric auxiliary circuits . 19
5.10 Pneumatic auxiliary circuits . 19
5.11 Peak arc voltages . 19
6 Product information . 19
6.1 Nature of the information . 19
6.1.1 General . 19
6.1.2 Component documentation . 20
6.1.3 Other information . 20
6.2 Marking . 21
6.3 Instructions for storage, installation, operation and maintenance . 21
7 Normal service conditions . 21
8 Constructional and performance requirements . 21
8.1 Constructional requirements . 21
8.1.1 General . 21
8.1.2 Terminals and connecting capacity . 21
8.1.3 Protective bonding terminal . 21
8.2 Performance requirements . 22
8.2.1 Operating conditions . 22
8.2.2 Temperature rise limits . 22
8.2.3 Operation following inactivity . 23
8.2.4 Electromagnetic compatibility (EMC) . 23
8.2.5 Acoustic noise emission . 23

8.2.6 Dielectric properties Clearances . 23
8.2.7 Creepage distances . 23
8.2.8 Switching overvoltages . 23
8.2.9 Operational performance capability . 24
8.2.10 Ability to withstand vibration and shock . 26
8.2.11 Ability to withstand short-time current . 26
9 Tests . 26
9.1 Kinds of tests . 26
9.2 Verification of constructional requirements . 26
9.3 Type tests . 27
9.3.1 Test sequences . 27
9.3.2 General test conditions . 27
9.3.3 Test sequence I: General performance characteristics . 28
9.3.4 Test sequence II: Rated service making and breaking capacities (if
appropriate) . 30
9.3.5 Test sequence III: Ability to withstand vibration and shock . 31
9.3.6 Test sequence IV: Critical currents range . 32
9.3.7 Test sequence V: Climatic conditions . 32
9.3.8 Test sequence VI: Other tests. 33
9.4 Routine tests. 34
9.4.1 General . 34
9.4.2 Mechanical operation Functional test . 34
9.4.3 Measurement of resistance or impedance . 34
9.4.4 Air-tightness (for pneumatic components) . 34
9.4.5 Dielectric withstand . 34
9.4.6 Check on the setting and operation of protective equipment and relays
(calibration) . 34
Annex A (normative) Correspondence between auxiliary contacts and steady states of
switchgear . 35
Bibliography . 37

Figure A.1 – Relationship between auxiliary contacts and steady states of switchgear . 36

Table 1 – Rated time constants . 17
Table 2 – Temperature rise limits and temperature limits . 23
Table 3 – Operational performance capability for category A1 components . 25
Table 4 – Operational performance capability for category A2 components . 25
Table 5 – Operational performance capability for category A3 components . 25
Table 6 – Operational performance capability for category A4 components . 26
Table 7 – List of test sequences . 27
Table 8 – Tolerances on test values . 28
Table 9 – Test method and severity . 33

– 4 – IEC 60077-2:2017 RLV © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
ELECTRIC EQUIPMENT FOR ROLLING STOCK –

Part 2: Electrotechnical components – General rules

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,
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...

IEC 60077-2 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electric equipment for rolling stock –
Part 2: Electrotechnical components – General rules

Applications ferroviaires – Equipements électriques du matériel roulant –
Partie 2: Composants électrotechniques – Règles générales

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 60077-2 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electric equipment for rolling stock –

Part 2: Electrotechnical components – General rules

Applications ferroviaires – Equipements électriques du matériel roulant –

Partie 2: Composants électrotechniques – Règles générales

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 45.060.01 ISBN 978-2-8322-4424-1

– 2 – IEC 60077-2:2017 © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Components . 7
3.2 Component parts . 9
3.3 Operational features . 11
3.4 Abbreviated terms . 14
4 Classification . 15
5 Characteristics . 15
5.1 List of characteristics . 15
5.2 Type of component . 15
5.3 Rated and limiting values for the main circuit . 16
5.3.1 General . 16
5.3.2 Rated voltages . 16
5.3.3 Rated currents . 16
5.3.4 Rated time constants (for DC switchgear) . 16
5.3.5 Rated power factor (for AC switchgear) . 17
5.4 Operational frequencies . 17
5.5 Component categories . 17
5.6 Electric control circuits . 17
5.7 Pneumatic control circuits . 18
5.8 Manual control . 18
5.9 Electric auxiliary circuits . 18
5.10 Pneumatic auxiliary circuits . 19
5.11 Peak arc voltages . 19
6 Product information . 19
6.1 Nature of the information . 19
6.1.1 General . 19
6.1.2 Component documentation . 19
6.1.3 Other information . 20
6.2 Marking . 20
6.3 Instructions for storage, installation, operation and maintenance . 20
7 Normal service conditions . 21
8 Constructional and performance requirements . 21
8.1 Constructional requirements . 21
8.1.1 General . 21
8.1.2 Terminals and connecting capacity . 21
8.1.3 Protective bonding terminal . 21
8.2 Performance requirements . 21
8.2.1 Operating conditions . 21
8.2.2 Temperature limits . 22
8.2.3 Operation following inactivity . 23
8.2.4 Electromagnetic compatibility (EMC) . 23
8.2.5 Acoustic noise emission . 23

8.2.6 Clearances . 23
8.2.7 Creepage distances . 23
8.2.8 Switching overvoltages . 23
8.2.9 Operational performance capability . 23
8.2.10 Ability to withstand vibration and shock . 25
8.2.11 Ability to withstand short-time current . 25
9 Tests . 25
9.1 Kinds of tests . 25
9.2 Verification of constructional requirements . 26
9.3 Type tests . 26
9.3.1 Test sequences . 26
9.3.2 General test conditions . 26
9.3.3 Test sequence I: General performance characteristics . 27
9.3.4 Test sequence II: Rated service making and breaking capacities (if
appropriate) . 28
9.3.5 Test sequence III: Ability to withstand vibration and shock . 30
9.3.6 Test sequence IV: Critical currents range . 31
9.3.7 Test sequence V: Climatic conditions . 31
9.3.8 Test sequence VI: Other tests. 32
9.4 Routine tests. 32
9.4.1 General . 32
9.4.2 Functional test . 32
9.4.3 Measurement of resistance or imped
...