IEC 62505-1:2009

Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 1: Single-phase circuit-breakers with <i>U</i>_n above 1 kV

IEC 62505-1:2009 is applicable to single-phase a.c. one-pole circuit-breakers designed for indoor or outdoor fixed installations for operation at frequencies of 16,7 Hz, 50 Hz and 60 Hz on traction systems having an UNm above 1 kV up to 52 kV.

Applications ferroviaires - Installations fixes - Exigences particulières pour appareillage à courant alternatif - Partie 1: Disjoncteurs monophasés avec <i>U</i>_n supérieur à 1 kV

La CEI 62505-1:2009 est applicable aux disjoncteurs unipolaires monophasés à courant alternatif conçus pour des installations fixes intérieures ou extérieures pour utilisation à des fréquences de 16,7 Hz, 50 Hz et 60 Hz dans les réseaux de traction dont la tension UNm est comprise entre 1 kV et 52 kV.

General Information

• Status: Published
• Publication Date: 09-Mar-2009
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: TC 9 - Electrical equipment and systems for railways
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 03-Feb-2016

Relations

• Revised: IEC 62505-1:2016 - Railway applications - Fixed installations - Particular requirements for AC switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62505-1
®
Edition 1.0 2009-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Railway applications – Fixed installations – Particular requirements for a.c.
switchgear –
Part 1: Single-phase circuit-breakers with U above 1 kV
n

Applications ferroviaires – Installations fixes – Exigences particulières pour
appareillage à courant alternatif –
Partie 1: Disjoncteurs monophasés avec U supérieur à 1 kV
n

IEC 62505-1:2009

---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62505-1
®
Edition 1.0 2009-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Railway applications – Fixed installations – Particular requirements for a.c.
switchgear –
Part 1: Single-phase circuit-breakers with U above 1 kV
n

Applications ferroviaires – Installations fixes – Exigences particulières pour
appareillage à courant alternatif –
Partie 1: Disjoncteurs monophasés avec U supérieur à 1 kV
n

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 45.060 ISBN 978-2-88910-745-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 62505-1 © IEC:2009
CONTENTS
FOREWORD.6
INTRODUCTION.8
1 Scope.9
2 Normative references .9
3 Terms and definitions .9
4 Service conditions .10
5 Rating .10
5.1 General .10
5.2 Rated voltage (U ).11
Ne
5.3 Nominal voltage (U ).11
n
5.4 Rated insulation voltage (U ) [4.2] .11
Nm
5.5 Rated frequency [4.3] .12
5.6 Rated normal current and temperature rise [4.4].12
5.7 Rated short-time withstand current [4.5] .13
5.8 Rated peak withstand current [4.6] .13
5.9 Rated duration of short-circuit [4.7] .13
5.10 Rated supply voltage of closing and opening devices and auxiliary circuit
[4.8] .13
5.11 Rated supply frequency of closing and opening devices and auxiliary circuits
[4.9] .13
5.12 Rated pressures of compressed gas supply for operation and for interruption
[4.10].13
5.13 Rated short-circuit breaking current (I ) [4.101].13
Nss
5.13.1 General [4.101].13
5.13.2 AC component of the rated short-circuit breaking current [4.101.1].14
5.13.3 DC component of the rated short-circuit breaking current [4.101.2].14
5.14 Rated transient recovery voltage for terminal faults [4.102] .15
5.14.1 General .15
5.14.2 Representation of transient recovery voltage waves [4.102.1].15
5.14.3 Representation of rated TRV [4.102.2].15
5.14.4 Standard values of rated TRV [4.102.3] .15
5.15 Standard values of initial transient recovery voltage [4.102.4] .16
5.16 Rated short-circuit making current [4.103] .16
5.17 Rated operating sequence [4.104] .16
5.18 Rated out-of-phase breaking current [4.106].17
5.19 Rated line-charging breaking current [4.107.1] .19
5.20 Rated cable-charging breaking current [4.107.2] .19
5.21 Rated single capacitor bank breaking current [4.107.3] .19
5.22 Rated back-to-back capacitor bank breaking current [4.107.4].19
5.23 Rated capacitor bank inrush making current [4.107.5] .20
5.24 Rated time quantities [4.109].20
5.24.1 General .20
5.24.2 Rated break time [4.109.1] .21
5.25 Co-ordination of rated values .21
6 Design and construction [5] .22
6.1 Requirements for liquids in circuit-breakers [5.1] .22

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62505-1 © IEC:2009 – 3 –
6.2 Requirements for gases in circuit-breakers [5.2].22
6.3 Earthing of circuit-breakers [5.3].22
6.4 Auxiliary equipment [5.4] .23
6.5 Dependent power closing [5.5] .23
6.6 Stored energy closing [5.6].23
6.7 Operation of releases [5.8] .23
6.7.1 General .23
6.7.2 Over-current release [5.8.101] .23
6.7.3 Multiple releases [5.8.102].24
6.8 Low and high pressure interlocking devices [5.9].24
6.9 Nameplates [5.10] .24
6.10 Requirements for simultaneity of poles [5.101] .24
6.11 General requirement for operation [5.102] .24
6.12 Pressure limits of compressed gas for interruption in gas blast circuit-
breakers [5.103] .25
6.13 Vent outlet [5.104].25
6.14 Safety overpressure device .25
7 Type tests [6] .25
7.1 General .25
7.2 Dielectric tests [6.2].26
7.2.1 Ambient air conditions during tests [6.2.1] .26
7.2.2 Wet test procedure [6.2.2] .26
7.2.3 Condition of circuit-breaker during dielectric tests [6.2.3].26
7.2.4 Application of test voltage and test conditions [6.2.5].26
7.2.5 Test voltages [6.2.6] .26
7.2.6 Lightning and switching impulse voltage tests [6.2.7.2, 6.2.7.3] .26
7.2.7 Power-frequency voltage tests [6.2.7.1] .27
7.2.8 Artificial pollution tests [6.2.8].27
7.2.9 Partial discharge tests [6.2.9] .27
7.2.10 Tests on auxiliary and control circuits [6.2.10] .27
7.3 Radio interference voltage (r.i.v.) tests [6.3] .27
7.4 Temperature-rise tests [6.5] .28
7.4.1 Conditions of the circuit-breaker to be tested [6.5.1] .28
7.4.2 Arrangement of the equipment [6.5.2].28
7.4.3 Measurement of the temperature and the temperature rise [6.5.3] .28
7.4.4 Ambient air temperature [6.5.4] .28
7.4.5 Temperature-rise tests of the auxiliary equipment [6.5.5].28
7.4.6 Interpretation of the temperature-rise tests [6.5.6] .28
7.5 Measurement of the resistance of the main circuit [6.4.1] .28
7.6 Short-time withstand current and peak withstand current tests [6.6] .28
7.6.1 Arrangement of the circuit-breaker and of the test circuit [6.6.1] .28
7.6.2 Test current and duration [6.6.2].29
7.6.3 Behaviour of circuit-breaker during test [6.6.3] .29
7.6.4 Conditions of circuit-breaker after test [6.6.4] .29
7.7 Mechanical and environmental tests [6.101] .29
7.7.1 Miscellaneous provisions for mechanical and environmental tests
[6.101.1] .29
7.7.2 Mechanical operation test at ambient air temperature [6.101.2] .31
7.7.3 Low and high temperature tests [6.101.3] .32

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– 4 – 62505-1 © IEC:2009
7.7.4 Humidity test [6.101.4].35
7.7.5 Test to prove the operation under severe ice conditions [6.101.5].36
7.7.6 Guide for static terminal load test [6.101.6].36
7.8 Miscellaneous provisions for making and breaking tests [6.102] .37
7.8.1 General [6.102.1].37
7.8.2 Particular requirements for single–pole circuit-breaker tests .37
7.8.3 Arrangement of circuit-breaker for tests [6.102.3] .37
7.8.4 General considerations concerning test methods [6.102.4] .38
7.8.5 Synthetic tests [6.102.5] .38
7.8.6 No-load operations before tests [6.102.6] .38
7.8.7 Alternative closing mechanisms [6.102.7] .39
7.8.8 Behaviour of circuit-breaker during tests [6.102.8] .39
7.8.9 Condition of circuit-breaker after tests [6.102.9] .40
7.8.10 Circuit-breaker with short arcing times.41
7.9 Test circuit for short circuit making and breaking tests [6.103].43
7.9.1 Power factor [6.103.1] .43
7.9.2 Frequency [6.103.2].43
7.9.3 Earthing of test circuit for single phase tests of a single-pole circuit-
breaker [6.103.3] .43
7.9.4 Connection of test circuit to circuit-breaker [6.103.4] .43
7.10 Short-circuit test quantities [6.104] .44
7.10.1 Applied voltage before short-circuit making tests [6.104.1] .44
7.10.2 Short-circuit making current [6.104.2] .44
7.10.3 Short-circuit breaking current [6.104.3].45
7.10.4 DC component of short-circuit breaking current [6.104.4].45
7.10.5 Transient recovery voltage (TRV) for terminal fault test [6.104.5].46
7.10.6 Measurement of transient recovery voltage [6.104.6] .48
7.10.7 Power frequency recovery voltage [6.104.7] .48
7.11 Short-circuit test procedure [6.105].48
7.11.1 Time interval between tests [6.105.1] .48
7.11.2 Application of auxiliary power to the opening release – Breaking tests
[6.105.2] .49
7.11.3 Application of auxiliary power to the opening release – Make-break
tests [6.105.3] .49
7.11.4 Latching on short-circuit [6.105.4].49
7.11.5 Invalid tests [6.105.5] .49
7.12 Basic short-circuit test-duties [6.106].50
7.12.1 General .50
7.12.2 Test-duty T10 [6.106.1] .50
7.12.3 Test-duty T30 [6.106.2] .50
7.12.4 Test-duty T60 [6.106.3] .50
7.12.5 Test-duty T100s [6.106.4].50
7.12.6 Test-duty T100a [6.106.5].51
7.13 Critical current tests [6.107] .51
7.13.1 Applicability [6.107.1] .51
7.13.2 Tests current [6.107.2].51
7.13.3 Critical current test-duties [6.107.3] .52
7.14 Out-of-phase making and breaking tests [6.110].52
7.15 Capacitive current switching tests [6.111].52
7.15.1 Applicability [6.111.1] .52

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62505-1 © IEC:2009 – 5 –
7.15.2 General [6.111.2] .52
7.15.3 Characteristics of supply circuits [6.111.3] .52
7.15.4 Earthing of the supply circuit [6.111.4] .52
7.15.5 Characteristics of the capacitive circuit to be switched [6.111.5].53
7.15.6 Wave form of the current [6.111.6] .53
7.15.7 Test voltage [6.111.7].54
7.15.8 Test duties [6.111.9].54
7.15.9 Test with specified TRV [6.111.9] .54
7.15.10 Test results [6.111.11].54
8 Routine tests [7] .55
8.1 General .55
8.2 Power frequency voltage withstand dry on the main circuit [7.1] .55
8.3 Voltage withstand tests on control and auxiliary circuits [7.2] .55
8.4 Measurement of the resistance of the main circuit [7.3] .55
8.5 Mechanical operating tests [7.101] .55
8.6 Design and visual check [7.102] .56
9 Guidance to the selection of circuit-breakers for service [8] .57
10 Information to be given with enquiries, tenders and orders [9] .57
Bibliography.58

Table 1 – Nominal voltages (U ), rated impulse voltages (U ) and short-duration
n Ni
power-frequency (AC) test levels U for circuits connected to the contact line .12
a
Table 2 – Standard values of rated transient recovery voltage – Representation by two
parameters – Single pole circuit-breaker.16
Table 3 – Standard values of prospective transient recovery voltage for 120° out-of-
phase breaking–Representation by two parameters – Single pole circuit-breaker.18
Table 4 – Standard values of prospective transient recovery voltage for 180° out-of-
phase breaking – Representation by two parameters – Single pole circuit-breaker.18
Table 5 – Suggested values of maximum permissible switching overvoltage to earth .20
Table 6 – Co-ordination table of rated values for circuit-breakers.22
Table 7 – Mechanical operation test at ambient temperature.32
Table 8 – Standard values of prospective transient recovery voltage for test-duty T60 –
Representation by two parameters – Single pole circuit-breaker .46
Table 9 – Standard values of prospective transient recovery voltage for test-duty T30 –
Representation by two parameters – Single pole circuit-breaker .47
Table 10 – Test values for tests with specified TRV .54

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– 6 – 62505-1 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

RAILWAY APPLICATIONS –
FIXED INSTALLATIONS –
PARTICULAR REQUIREMENTS FOR AC SWITCHGEAR –

Part 1: Single-phase circuit-breakers with U above 1 kV
n


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International Standard IEC 62505-1 has been prepared IEC technical committee 9: Electrical
equipment and systems for railways. This standard is based on EN 50152-1.
The text of this standard is based on the following documents:
FDIS Report on voting
9/1219/FDIS 9/1232/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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62505-1 © IEC:2009 – 7 –
A list of all parts of IEC 62505 series, under the general title Railway applications – Fixed
installations – Particular requirements for a.c. switchgear, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
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