Railway applications - Fixed installations - Particular requirements for alternating current switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV

This EN 50152-1 is applicable to single-pole and two-pole alternating current (a.c.) circuit-breakers which are:
- for indoor or outdoor fixed installations in tractions systems, and
- operated with an a.c. line voltage and frequency as specified in EN 50163.
NOTE 1 EN 50163 specifies the a.c. traction systems 15 kV 16,7 Hz and 25 kV 50 Hz. NOTE 2 As rails of a.c. traction systems are connected to earth and included in the return current path all phase to earth voltages will be within the tolerances as specified in EN 50163. Nevertheless phase to phase voltages are sometimes higher e.g. in autotransformer systems. This European Standard is also applicable to the operating devices of circuit-breakers and to their auxiliary   equipment. This European Standard does not address circuit-breakers with dependent manual operating mechanism. NOTE 3 It is impossible to specify a rated short-circuit making current for these circuit-breakers and it is likely that such dependent manual operation is not meeting safety considerations.

Bahnanwendungen - Ortsfeste Anlagen - Besondere Anforderungen an Wechselstrom-Schalteinrichtungen - Teil 1: Leistungsschalter mit einer Nennspannung größer als 1 kV

Applications ferroviaires - Installations fixes - Spécifications particulières pour appareillage à courant alternatif - Partie 1: Disjoncteurs de tension nominale supérieure à 1 kV

Železniške naprave - Stabilne naprave električne vleke - Posebne zahteve za stikalne naprave za izmenični tok - 1. del: Tokovni odklopniki za nazivno napetost nad 1 kV

Ta standard EN 50152-1 se uporablja pri tokovnih odklopnikih z enopolnim ali dvopolnim izmeničnim tokom (a.c.), za katere velja:
– uporabljajo se za notranje ali zunanje pričvrščene naprave v vlečnih sistemih in
– uporabljajo izmenični tok linijskega vodnika, kot je navedeno v standardu EN 50163.
OPOMBA 1 Standard EN 50163 določa vlečne sisteme z izmeničnim tokom 15 kV 16,7 Hz in 25 kV 50 Hz. OPOMBA 2 Ker so tiri vlečnih sistemov z izmeničnim tokom ozemljeni in vključeni v pot povratnega toka, bodo vsi vodniki do ozemljitve v mejah toka, ki so določene v standardu EN 50163. Kljub temu so lahko napetosti med vodniki višje kot na primer v sistemih z avtotransformatorji. Ta evropski standard se uporablja tudi za upravljalne naprave za tokovne odklopnike in njihovo zunanjo opremo. Ta evropski standard ne obravnava tokovnih odklopnikov z odvisnimi ročnimi upravljalnimi mehanizmi. OPOMBA 3 Za te tokovne odklopnike je nemogoče določiti naznačeni tok, ki povzroča kratki stik, in je zato verjetno, da tako odvisno ročno opravljanje ne upošteva varnostnih zahtev.

General Information

Status
Published
Public Enquiry End Date
30-Aug-2011
Publication Date
25-Nov-2012
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
13-Nov-2012
Due Date
18-Jan-2013
Completion Date
26-Nov-2012

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SLOVENSKI STANDARD
SIST EN 50152-1:2013
01-januar-2013
1DGRPHãþD
SIST EN 50152-1:2008
äHOH]QLãNHQDSUDYH6WDELOQHQDSUDYHHOHNWULþQHYOHNH3RVHEQH]DKWHYH]D

VWLNDOQHQDSUDYH]DL]PHQLþQLWRNGHO7RNRYQLRGNORSQLNL]DQD]LYQRQDSHWRVW

QDGN9

Railway applications - Fixed installations - Particular requirements for alternating current

switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV
Bahnanwendungen - Ortsfeste Anlagen - Besondere Anforderungen an Wechselstrom-

Schalteinrichtungen - Teil 1: Leistungsschalter mit einer Nennspannung größer als 1 kV

Applications ferroviaires - Installations fixes - Spécifications particulières pour

appareillage à courant alternatif - Partie 1: Disjoncteurs de tension nominale supérieure

à 1 kV
Ta slovenski standard je istoveten z: EN 50152-1:2012
ICS:
29.130.99 Druge stikalne in krmilne Other switchgear and
naprave controlgear
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
SIST EN 50152-1:2013 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 50152-1:2013
---------------------- Page: 2 ----------------------
SIST EN 50152-1:2013
EUROPEAN STANDARD
EN 50152-1
NORME EUROPÉENNE
November 2012
EUROPÄISCHE NORM
ICS 29.120.40; 29.280 Supersedes EN 50152-1:2007
English version
Railway applications -
Fixed installations -
Particular requirements for alternating current switchgear -
Part 1: Circuit-breakers with nominal voltage above 1 kV
Applications ferroviaires - Bahnanwendungen -
Installations fixes - Ortsfeste Anlagen – Besondere
Spécifications particulières pour Anforderungen an Wechselstrom-
appareillage à courant alternatif - Schalteinrichtungen – Teil 1:
Partie 1: Disjoncteurs de tension nominale Leistungsschalter mit einer
supérieure à 1 kV Nennspannung größer als 1 kV

This European Standard was approved by CENELEC on 2012-10-15. CENELEC members are bound to comply

with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard

the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on

application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CENELEC member into its own language and notified

to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,

the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,

Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50152-1:2012 E
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SIST EN 50152-1:2013
EN 50152-1:2012 - 2 -
Contents
Page

Introduction .................................................................................................................................................. - 5 -

1 Scope ............................................................................................................................................... - 6 -

2 Normative references ..................................................................................................................... - 6 -

3 Terms and definitions .................................................................................................................... - 6 -

4 Service conditions .......................................................................................................................... - 7 -

5 Rating ............................................................................................................................................... - 8 -

5.1 General ............................................................................................................................................ - 8 -

5.2 Nominal voltage (U ) ...................................................................................................................... - 8 -

5.3 Rated voltage (U ) ......................................................................................................................... - 8 -

5.4 Insulation coordination .................................................................................................................. - 8 -

5.5 Rated frequency [4.3] ..................................................................................................................... - 9 -

5.6 Rated supply voltage of closing and opening devices and of auxiliary and control

circuits (U ) [4.8] ............................................................................................................................. - 9 -

5.7 Rated short-circuit breaking current (I ) [4.101]........................................................................ - 9 -

5.8 Transient Recovery Voltage (TRV) related to the rated short-circuit breaking current

[4.102] ............................................................................................................................................ - 10 -

5.9 Rated short-circuit making current [4.103] ................................................................................ - 11 -

5.10 Rated operating sequence [4.104] .............................................................................................. - 11 -

5.11 Characteristics for short line faults [4.105] ............................................................................... - 11 -

5.12 Rated out-of-phase making and breaking current [4.106] ........................................................ - 12 -

5.13 Rated capacitive switching currents [4.107] .............................................................................. - 12 -

5.14 Number of mechanical operations [4.110] ................................................................................. - 12 -

6 Design and construction [5] ........................................................................................................ - 13 -

6.1 General .......................................................................................................................................... - 13 -

6.2 Nameplates [5.10] ......................................................................................................................... - 13 -

6.3 Creepage distances [5.14] ........................................................................................................... - 13 -

6.4 Electromagnetic compatibility (EMC) [5.18] .............................................................................. - 13 -

6.5 Safety overpressure device ......................................................................................................... - 13 -

7 Type tests [6] ................................................................................................................................. - 13 -

7.1 General .......................................................................................................................................... - 13 -

7.2 Dielectric tests [6.2] ...................................................................................................................... - 13 -

7.3 Electromagnetic compatibility tests (EMC) [6.9] ....................................................................... - 14 -

7.4 Mechanical and environmental tests [6.101] ............................................................................. - 14 -

7.5 Miscellaneous provisions for making and breaking tests [6.102] ........................................... - 14 -

7.6 Test circuit for short circuit making and breaking tests [6.103] .............................................. - 17 -

7.7 Short-circuit test quantities [6.104] ............................................................................................ - 17 -

7.8 Basic short-circuit test-duties [6.106] ........................................................................................ - 19 -

7.9 Single-phase and double-earth fault tests [6.108] .................................................................... - 19 -

7.10 Short-line fault tests [6.109] ........................................................................................................ - 19 -

7.11 Out-of-phase making and breaking tests [6.110] ...................................................................... - 19 -

7.12 Capacitive current switching tests [6.111] ................................................................................. - 20 -

8 Routine tests [7] ........................................................................................................................... - 20 -

9 Guidance to the selection of circuit-breakers for service [8] .................................................. - 20 -

10 Information to be given with enquiries, tenders and orders [9] .............................................. - 21 -

11 Rules for transport, storage, erection, operation and maintenance [10] ................................ - 21 -

12 Safety [11] ...................................................................................................................................... - 21 -

13 Influence of the product on the environment [12] ..................................................................... - 21 -

Bibliography ............................................................................................................................................... - 22 -

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SIST EN 50152-1:2013
- 3 - EN 50152-1:2012
Tables

Table 1  Nominal voltages (U ), rated impulse voltages (U ) and short-duration power-frequency

n Ni

withstand voltage (U ) for circuits connected to the contact line ................................................... - 9 -

Table 2  Standard values of transient recovery voltage - Representation by two parameters ...... - 11 -

Table 3  Preferred values of rated capacitive switching currents .................................................... - 12 -

Table 4  Mechanical endurance classes .............................................................................................. - 13 -

Table 5  Standard values of prospective transient recovery voltage - Representation by two

parameters .......................................................................................................................................... - 18 -

Table 6  Specified values U , t , U and t ............................................................................................ - 20 -

1 1 c 2
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SIST EN 50152-1:2013
EN 50152-1:2012 - 4 -
Foreword

This document (EN 50152-1:2012) has been prepared by CLC/SC 9XC "Electric supply and earthing

systems for public transport equipment and ancillary apparatus (Fixed installations)".

The following dates are fixed:
• latest date by which this document has to be (dop) 2013-10-15
implemented at national level by publication of
an identical national standard or by
endorsement
(dow) 2015-10-15
• latest date by which the national standards
conflicting with this document have to
be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 50152-1:2007.

EN 50152-1:2012 includes the following significant technical changes with respect to EN 50152-1:2007:

This standard was revised to reflect the latest versions of standards referenced and to remove text already

included in the EN 62271 series. The scope was extended to include single-phase and two-phase circuit

breakers. Definitions were added to provide the necessary precision and to meet the needs of railway

applications. Table 1 was reworked according to the changes of EN 50124-1:2001, Table A.2 and Table B.1.

Standard values of transient recovery voltage have been taken from different tables to one, Table 2. Ratings

of mechanical endurance previously given under the clause ‘type tests’ were moved to the new Table 4

‘Mechanical endurance classes’. Standard values of prospective transient recovery voltage have been taken

from different tables to one, Table 5. Table 6 ‘Coordination table of rated values for circuit-breakers’ of the

previous version was removed.

EN 50152 series under the generic title Railway applications  Fixed installations  Particular requirements

for alternating current switchgear is divided as follows:
- Part 1: Circuit-breakers with nominal voltage above 1 kV;

- Part 2: Disconnectors, earthing switches and switches with nominal voltage above 1 kV;

- Part 3-1: Measurement, control and protection devices for specific use in a.c. traction systems 

Application guide;

- Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems  Single-

phase current transformers;

- Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems  Single-

phase inductive voltage transformers.
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SIST EN 50152-1:2013
- 5 - EN 50152-1:2012
Introduction

This standard needs to be read in conjunction with EN 62271-1:2008 and EN 62271-100:2009.

Where a particular clause of EN 62271-100 is not mentioned in this standard, that clause applies as far as

reasonable. Where requirements relate exclusively to three-phase systems or to voltages outside those in

use in traction systems, they are not applicable. Where this standard states "addition" or "replacement", the

relevant text of EN 62271-100 needs to be adapted accordingly.

The numbering of clauses in EN 62271 series is not used in this European Standard. The numbering in

square brackets refers to the numbering of clauses in EN 62271.

Where terms defined in EN 62271-1 and EN 62271-100 conflict with definitions of the same terms as given in

IEC 60050-811:1991 or of the other railway applications documents listed in the normative references, the

definitions in EN 62271-1 and EN 62271-100 need to be used.

NOTE The suffix N which appears in this standard for rated values is not present in EN 62271-1 and EN 62271-100.

References in subclauses of EN 62271-1 and EN 62271-100 need to be replaced by references to

applicable subclauses in this standard as far as reasonably possible.
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SIST EN 50152-1:2013
EN 50152-1:2012 - 6 -
1 Scope

This EN 50152-1 is applicable to single-pole and two-pole alternating current (a.c.) circuit-breakers which

are:
 for indoor or outdoor fixed installations in tractions systems, and
 operated with an a.c. line voltage and frequency as specified in EN 50163.

NOTE 1 EN 50163 specifies the a.c. traction systems 15 kV 16,7 Hz and 25 kV 50 Hz.

NOTE 2 As rails of a.c. traction systems are connected to earth and included in the return current path all phase to

earth voltages will be within the tolerances as specified in EN 50163. Nevertheless phase to phase voltages are

sometimes higher e.g. in autotransformer systems.

This European Standard is also applicable to the operating devices of circuit-breakers and to their auxiliary

equipment.

This European Standard does not address circuit-breakers with dependent manual operating mechanism.

NOTE 3 It is impossible to specify a rated short-circuit making current for these circuit-breakers and it is likely that

such dependent manual operation is not meeting safety considerations.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 50121-5, Railway applications  Electromagnetic compatibility  Part 5: Emission and immunity of fixed

power supply installations and apparatus

EN 50124-1:2001, Railway applications  Insulation coordination  Part 1: Basic requirements 

Clearances and creepage distances for all electrical and electronic equipment

EN 50152-2:2012, Railway applications  Fixed installations  Particular requirements for alternating

current switchgear  Part 2: Disconnectors, earthing switches and switches with nominal voltage above

1 kV
EN 50163:2004, Railway applications  Supply voltages of traction systems

EN 62271-1:2008, High-voltage switchgear and controlgear  Part 1: Common specifications

(IEC 62271-1:2007)

EN 62271-100:2009, High-voltage switchgear and controlgear  Part 100: Alternating-current circuit-

breakers (IEC 62271-100:2008)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 62271-1:2008, EN 62271-100:2009

and the following apply.
3.1
single-pole circuit-breaker

circuit-breaker with one electrically separated conducting path for the main circuit suitable for use in a single-

phase circuit
---------------------- Page: 8 ----------------------
SIST EN 50152-1:2013
- 7 - EN 50152-1:2012
3.2
two-pole circuit-breaker

circuit-breaker with two independent electrically separated conducting paths for the main circuit

Note 1 to entry: The two paths may be connected in series for use in a single-phase circuit where the establishment

and the separation of the two paths is simultaneous.
3.3
nominal voltage

suitable approximate voltage value used to designate or identify a given supply system

[SOURCE: EN 50124-1:2001, 1.3.2.1]

Note 1 to entry: This value is also assigned to the circuit-breaker to show its usability in the supply system.

Note 2 to entry: An AT-System which is supplied with 2 phases, having a phase shift of 180° between them, is

commonly named 2 x U according to the U supplied to the catenary system.
n n
3.4
rated voltage

value of voltage assigned by the manufacturer to the equipment or part of it and to which operating and

performance characteristics are referred
[SOURCE: EN 50124-1:2001, 1.3.2.3, modified]

Note 1 to entry: This value is also used to determine its dielectric characteristics and will be used instead of the rated

insulation voltage (U ) as defined and used in EN 50124-1.
Note 2 to entry: The abbreviation U is not used for railway circuit-breakers.
3.5
Over Voltage category

classification of the circuit protection against internal and external overvoltages

3.6
Pollution Degree
classification of the pollution to be considered due to the micro climate
3.7
index of definitions

same as in 3.8 of EN 62271-100:2009, but amended according to the definitions above

4 Service conditions
Clause 2 of EN 62271-1:2008 is applicable with the following additions:

- the minimum ambient air temperature under normal service conditions for indoor circuit-breakers shall be

-5 °C;

- for special service conditions, agreement shall be made between purchaser and supplier. EN 50125-2

should be taken as guidance for the selection of appropriate classifications.

NOTE The altitude reference of EN 50124-1 (up to 2 000 m) applies to insulation coordination only and is not

considered in this standard.
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SIST EN 50152-1:2013
EN 50152-1:2012 - 8 -
5 Rating
5.1 General
Clause 4 of EN 62271-100:2009 is applicable except as noted in 5.2 – 5.14 below:
5.2 Nominal voltage (U )

The standard values of nominal voltage U are 15 kV and 25 kV as listed in Table 1 of EN 50163:2004.

5.3 Rated voltage (U )
Subclause 4.1 of EN 62271-1:2008 is replaced by the following:

The rated voltage U shall be chosen taking into consideration the maximum voltage level suitable to be

permanently applied to the circuit-breaker (i.e. highest permanent voltage U as defined in

max1
EN 50163:2004).

The value of U shall be used whenever EN 62271-1 or EN 62271-100:2009 reference to U unless another

Ne r
value is named explicitly.

NOTE 1 The insulation characteristics determined by applying U are expected to be suitable to allow the highest

max1
non-permanent voltage U taken from EN 50163.
max2

NOTE 2 The rated voltage for fixed installations in railway applications is a phase to earth value.

5.4 Insulation coordination
5.4.1 General

Insulation coordination shall be conducted according to EN 50124-1, e.g. selection of values for

Over Voltage category (OV) and Pollution Degree (PD).

The rated voltage U shall be used when EN 50124-1 refers to the rated insulation voltage U .

Ne Nm

The definition of the four overvoltage categories shall be as in EN 50124-1:2001, 2.2.2.1

The definition of the seven pollution degrees shall be as in EN 50124-1:2001, 2.5 and Table A.4

5.4.2 Rated insulation level [4.2]
Subclause 4.2 of EN 62271-1:2008 is applicable except as follows:

The value of the rated impulse withstand voltage U and of the power-frequency withstand voltage U shall

Ni d
be as given in Table 1, taken from the values listed in EN 50124-1:2001.
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SIST EN 50152-1:2013
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Table 1  Nominal voltages (U ), rated impulse voltages (U ) and short-duration power-frequency

n Ni
withstand voltage (U ) for circuits connected to the contact line
U U U U
n Ne Ni d
kV kV kV kV
a 95 38
17,25
4 125 50
a 145 70
17,25
4 170 70
3 170 70
27,5
4 200 95
3 200 95
27,5
4 250 95

NOTE The rated short-duration power-frequency withstand voltage is represented by U as used in EN 62271-1:2008 not by U

d a

as used in EN 50124-1. U is used in EN 62271-1:2008 for the rated auxiliary voltage.

Not commonly used.
For higher requirements on insulation system

This is common practice in some countries with larger number of installations at altitude up to 2 000 m without additionally

applying an altitude correction factor.

In special cases isolation may be requested across the open breaking contacts. In this case values shall be

selected from EN 50152-2:2012, Table 1.

All test voltages for dielectric tests on the main circuit shall be taken from Table 1.

5.5 Rated frequency [4.3]
Subclause 4.3 of EN 62271-1:2008 is replaced by the following:

The standard values of the rated frequency shall be 16,7 Hz and 50 Hz as listed in Table 1 of

EN 50163:2004.
5.6 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ) [4.8]
Subclause 4.8 of EN 62271-1:2008 is applicable with the following addition.

The relative tolerance as specified in 4.8.3 of EN 62271-1:2008 does not apply to a.c. power supplies fed

from a transformer connected to the traction line voltage. This tolerance shall be agreed upon between

purchaser and supplier.

NOTE In this case the relative tolerance of 4.8.3 of EN 62271-1:2008 will not be sufficient due to the high fluctuation

of the traction line voltage.
5.7 Rated short-circuit breaking current (I) [4.101]
Subclause 4.101 of EN 62271-100:2009 is applicable except as follows:

The transient recovery voltage shall equal to the value specified in 5.8 of this standard.

The reference in paragraph b) shall be to 5.13 of this standard.

Only the standard value of 45 ms for the d.c. time constants is used for railway applications.

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SIST EN 50152-1:2013
EN 50152-1:2012 - 10 -
5.8 Transient Recovery Voltage (TRV) related to the rated short-circuit breaking
current [4.102]
5.8.1 General
Subclause 4.102 of EN 62271-100:2009 is applicable except as follows:
Reference to short circuit breaking current shall be to 5.7, in this standard.
5.8.2 Representation of TRV [4.102.2]
Subclause 4.102.2 of EN 62271-100:2009 is applicable except as follows:
Paragraph a) is not applicable
Paragraph b) the formula is U = k x k x U √2
c af pp max2
Paragraph d) is not applicable.

NOTE U is used in the calculations instead of U to cover the more severe switching conditions when operating

max2 Ne
voltages are above Umax1.

5.8.3 Standard values of TRV related to the rated short-circuit breaking current [4.102.3]

Subclause 4.102.3 of EN 62271-100:2009 shall be replaced by the following.
Standard values of TRV are given in Table 2:

The table also indicates values of rate of rise, taken as u /t , which together with TRV peak values u may be

c 3 c
used for purposes of specification of TRV.

The values given in the table are prospective values. They apply to railway circuit-breakers in traction

systems consisting of transformers, lines and cables.

Where a circuit-breaker has to operate under more severe conditions of TRV than those in Table 2, these

shall be identified in the purchaser's specification.

NOTE More severe conditions apply e.g. to circuit-breakers connected to capacitor banks.

---------------------- Page: 12 ----------------------
SIST EN 50152-1:2013
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Table 2  Standard values of transient recovery voltage - Representation by two parameters

Nominal Maximum Type of test First- Ampli- TRV Time Time Voltage Time RRRV
voltage non- pole-to- tude peak delay
permanent clear- factor value
voltage factor
Un Umax2 kpp Kaf uc t3 td u’ t’ uc/t3
p.u. p.u kV µs µs kV µs kV/µs
Terminal 1 1,4 36 108 16 12 52 0,33
fault
Out-of-phase 1,73 1,25 55 216 32 18 104 0,25
15 18
120
Out-of-phase 2 1,25 64 216 32 21 104 0,30
180
Terminal 1 1,4 57 132 20 19 64 0,43
fault
Out-of-phase 1,73 1,25 88 264 40 29 128 0,33
25 29
120
Out-of-phase 2 1,25 102 264 40 34 128 0,39
180

NOTE 1 The formulae of 4.102.2 of EN 62271-100:2009 have been used to determine the values in this table. The conditions for

class 1 circuit-breakers have been deemed most suitable for railway applications.

NOTE 2 The parameter k has been kept to make use of the equations of EN 62271-100. However k in traction systems reflects

pp pp

the more severe voltage conditions from interconnection of supply systems with 120° or 180° phase shift.

NOTE 3 TRV values as specified in this table are sufficient to cover all likely conditions, including AT systems as phase to earth

faults are the large majority in this system.

NOTE 4 Out-of-phase 120° does not exist as normal operating condition in 15 kV railways.

5.8.4 Standard values of initial Transient Recovery Voltage (TRV) [4.102.4]
Subclause 4.102.4 of EN 62271-100:2009 is not applicable.
5.9 Rated short-circuit making current [4.103]
Subclause 4.103 of EN 62271-100:2009 is replaced by the following.

The rated short-circuit making current (see Figure 8 of EN 62271-100:2009) of a circuit-breaker is that which

corresponds to the rated voltage and frequency, and shall be 2,5 times the r.m.s. value of the a.c.

component of its rated short-circuit breaking current (see 5.7).
5.10 Rated operating sequence [4.104]
Subclause 4.104 of EN 62271-100:2009 is applicable with the following addition:
c) O – t’’’ - CO
where
t’’’ = 60 s, for circuit-breakers used in conjunction with a line test system.
5.11 Characteristics for short line faults [4.105]
Subclause 4.105 of EN 62271-100:2009 is not applicable.

NOTE This fault condition is covered by the values given for terminal faults in Tables 2 to 5 of this standard.

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EN 50152-1:2012 - 12 -
5.12 Rated out-of-phase making and breaking current [4.106]
Subclause 4.106 of EN 62271-100:2009 shall be replaced by the following:

The purchaser should identify if out-of-phase conditions apply. If so the purchaser shall specify the out-of-

phase making and breaking current for the system.

If rated out-of-phase making and breaking currents are assigned the following applies:

a) the power frequency recovery voltage shall be √3 * U for 120° conditions and 2 * U for 180°

Ne Ne
conditions;
b) the transient recovery voltage shall be as given in Table 2;

c) the rated out-of-phase breaking current shall be determined according to the maximum possible

failure current of the fault loop. The rated short circuit making current shall be the crest value of the

rated out-of-phase breaking current.
5.13 Rated capacitive switching currents [4.107]
Subclause 4.107 of EN 62271-100:2009 applies with the following exception:
Table 9 of EN 62271-100:2009 shall be replaced by Table 3.
Table 3  Preferred values of rated capacitive switching currents
Line Cable Single Back-to-back capacitor bank
capacitor
bank

Nominal Rated line- Rated cable- Rated single Rated back-to- Rated back-to- Frequency of

voltage charging charging capacitor back capacitor back capacitor the inrush
breaking breaking breaking bank breaking bank inrush current
current current
...

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