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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
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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
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 preparation is entrusted to technical committees; any IEC National Committee interested
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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
...