IEC 60077-4:2019

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

IEC 60077-4:2019

Name:IEC 60077-4:2019   Standard name:Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers
Standard number:IEC 60077-4:2019   language:English language
Release Date:24-Oct-2019   technical committee:TC 9 - Electrical equipment and systems for railways
Drafting committee:MT 60077 - TC 9/MT 60077   ICS number:01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION

IEC 60077-4
Edition 2.0 2019-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electric equipment for rolling stock –
Part 4: Electrotechnical components – Rules for AC circuit-breakers





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IEC 60077-4
Edition 2.0 2019-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electric equipment for rolling stock –

Part 4: Electrotechnical components – Rules for AC circuit-breakers

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 45.060.01 ISBN 978-2-8322-7566-5

– 2 – IEC 60077-4:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION .
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Components . 9
3.2 Component parts . 10
3.3 Operational features . 11
3.4 Making and breaking characteristics . 11
3.5 Abbreviated terms . 14
4 Classification . 14
5 Characteristics . 14
5.1 Summary of characteristics . 14
5.2 Type of circuit-breaker . 15
5.3 Rated values and limiting values for the main circuit . 15
5.3.1 General . 15
5.3.2 Rated voltages . 15
5.3.3 Rated currents . 15
5.3.4 Rated frequencies Rated operational frequency . 16
5.3.5 Rated power factors. 16
5.3.6 Short-circuit characteristics (see also Annex B) . 16
5.4 Operational frequencies . 18
5.5 Electric and pneumatic control circuits . 19
5.6 Electric and pneumatic auxiliary circuits . 19
5.7 Overcurrent release . 19
5.8 Recovery voltages . 19
6 Product information . 19
6.1 Component documentation . 19
6.2 Marking . 19
7 Normal service conditions . 19
8 Constructional and performance requirements . 20
8.1 Constructional requirements . 20
8.2 Performance requirements . 20
8.2.1 Operating conditions . 20
8.2.2 Temperature rise limits . 20
8.2.3 Operation following inactivity . 20
8.2.4 Electromagnetic compatibility (EMC) . 20
8.2.5 Acoustic noise emission . 20
8.2.6 Dielectric properties Clearances . 20
8.2.7 Creepage distances . 20
8.2.8 Switching overvoltages . 20
8.2.9 Operational performance capability . 20
8.2.10 Ability to withstand vibration and shock . 21
8.2.11 Ability to make and break under short-circuit conditions . 21
9 Tests . 21

9.1 Kind of tests . 21
9.1.1 General . 21
9.1.2 Type tests . 22
9.1.3 Routine tests . 22
9.1.4 Investigatory Investigation tests . 22
9.2 Tests for Verification of constructional requirements . 22
9.2.1 General . 22
9.2.2 Type tests . 22
9.2.3 Routine tests . 22
9.3 Type tests for verification of performance requirements . 23
9.3.1 Test sequences . 23
9.3.2 General test conditions . 23
9.3.3 Test sequence I: General performance characteristics . 24
9.3.4 Test sequence II: Rated short-circuit making and breaking capacities . 26
9.3.5 Test sequence III: Capability Ability to withstand vibration and shock . 28
Test sequence IV: Transient recovery voltage test .
9.3.6 Test sequence IV: Climatic conditions . 29
9.3.7 Test sequence VI: Other tests. 29
9.4 Routine tests for verification of performance requirements . 29
9.4.1 General . 29
9.4.2 Mechanical operation Functional test . 30
9.4.3 Calibration of releases . 30
9.4.4 Air-tightness (for pneumatic circuit-breaker) . 30
9.4.5 Dielectric withstand . 30
Annex A (informative) Test circuit to verify the making and breaking capacities . 31
Annex B (informative) Determination of short-circuit making and breaking currents,
and of percentage DC component . 32
Bibliography . 33

Figure A.1 – Principle Diagram of the test circuit . 31
Figure B.1 – Determination of short-circuit making and breaking currents, and of
percentage DC components . 32

Table – Determination of voltage for impulse test .
Table 1 – Standard values of transient recovery voltage – Representation by two
parameters . 18
Table 2 – Operational performance capability . 21
Table 3 – List of type test sequences for performance requirements . 23
Table 4 – Tolerances on test values . 24
Table 5 – Standard values of prospective transient recovery voltage – Representation
by two parameters . 27

– 4 – IEC 60077-4:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
ELECTRIC EQUIPMENT FOR ROLLING STOCK –

Part 4: Electrotechnical components –
Rules for AC circuit-breakers
FOREWORD
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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee
...

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