Railway applications - Fixed installations - Particular requirements for AC switchgear - Part 4: AC metal-enclosed traction switchgear

This part of EN 50152 specifies requirements for prefabricated metal-enclosed traction switchgear for alternating current of traction voltages and frequencies as specified in EN 50163:2004 and used in indoor and outdoor installation. Enclosures may include fixed and removable components and may be filled with fluid (liquid or gas) to provide insulation.
NOTE 1 EN 50163 specifies the a.c. traction systems 15 kV 16,7 Hz and 25 kV 50 Hz
NOTE 2 This standard applies to single-phase or two-phase systems.
For metal-enclosed traction switchgear containing gas-filled compartments, the design pressure is limited to a maximum of 300 kPa (relative pressure).
NOTE 3 EN 62271-203 can be used as a guide for design and testing in case the design pressure of gas-filled compartments exceeds 300 kPa (relative pressure).
Components contained in metal-enclosed traction switchgear are to be designed and tested in accordance with their various relevant standards. This document supplements the standards for the individual components regarding their installation in traction switchgear assemblies.
This document does not preclude that other equipment may be included in the same enclosure. In such a case, any possible influence of that equipment on the traction switchgear is to be taken into account.
NOTE 5 Switchgear and controlgear assemblies having an insulation enclosure are covered by EN 62271-201. For definition see there or IEV 441-12-06.

Bahnanwendungen - Ortsfeste Anlagen - Besondere Anforderungen an Wechselstrom-Schalteinrichtungen - Teil 4: Metallgekapselte Wechselstrom-Bahnschaltanlagen

Applications ferroviaires - Installations fixes - Exigences particulières pour appareillage à courant alternatif ? Partie 4: Appareillage ferroviaires sous enveloppe métallique pour courant alternatif

Železniške naprave - Stabilne naprave električne vleke - Posebne zahteve za stikalne naprave za izmenični tok - 4. del: Stikalne naprave za izmenični tok v kovinskih ohišjih vlečnih sistemov

General Information

Status
Published
Publication Date
11-Oct-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Sep-2021
Due Date
06-Nov-2021
Completion Date
12-Oct-2021

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SLOVENSKI STANDARD
SIST-TS CLC/TS 50152-4:2021
01-november-2021
Železniške naprave - Stabilne naprave električne vleke - Posebne zahteve za
stikalne naprave za izmenični tok - 4. del: Stikalne naprave za izmenični tok v
kovinskih ohišjih vlečnih sistemov

Railway applications - Fixed installations - Particular requirements for AC switchgear -

Part 4: AC metal-enclosed traction switchgear
Bahnanwendungen - Ortsfeste Anlagen - Besondere Anforderungen an Wechselstrom-
Schalteinrichtungen - Teil 4: Metallgekapselte Wechselstrom-Bahnschaltanlagen

Applications ferroviaires - Installations fixes - Exigences particulières pour appareillage à

courant alternatif ? Partie 4: Appareillage ferroviaires sous enveloppe métallique pour

courant alternatif
Ta slovenski standard je istoveten z: CLC/TS 50152-4:2021
ICS:
29.130.99 Druge stikalne in krmilne Other switchgear and
naprave controlgear
29.280 Električna vlečna oprema Electric traction equipment
SIST-TS CLC/TS 50152-4:2021 en

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

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SIST-TS CLC/TS 50152-4:2021
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SIST-TS CLC/TS 50152-4:2021
TECHNICAL SPECIFICATION CLC/TS 50152-4
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
August 2021
ICS 29.130.10; 29.280
English Version
Railway applications - Fixed installations - Particular
requirements for AC switchgear - Part 4: AC metal-enclosed
traction switchgear

Applications ferroviaires - Installations fixes - Exigences Bahnanwendungen - Ortsfeste Anlagen - Besondere

particulières pour appareillage à courant alternatif - Partie 4: Anforderungen an Wechselstrom-Schalteinrichtungen -

Appareillage ferroviaires sous enveloppe métallique pour Teil 4: Metallgekapselte Wechselstrom-Bahnschaltanlagen

courant alternatif
This Technical Specification was approved by CENELEC on 2021-07-19.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly

at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. CLC/TS 50152-4:2021 E
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SIST-TS CLC/TS 50152-4:2021
CLC/TS 50152-4:2021 (E)
Contents Page

European foreword ........................................................................................................................................... 5

Introduction ....................................................................................................................................................... 6

1 Scope .................................................................................................................................................... 7

2 Normative references .......................................................................................................................... 7

3 Terms and definitions [3] .................................................................................................................... 8

4 Normal and special service conditions [4] ....................................................................................... 8

5 Ratings [5] ............................................................................................................................................ 9

5.1 General [5.1] ......................................................................................................................................... 9

5.2 Nominal voltage (U ) ........................................................................................................................... 9

5.3 Rated voltage (U ) [5.2] .................................................................................................................... 10

5.4 Insulation coordination ..................................................................................................................... 10

5.5 Rated frequency (f ) [5.4] ................................................................................................................... 11

5.6 Currents in normal operation ........................................................................................................... 11

5.7 Rated short-time withstand current (I ) [5.6] ................................................................................... 12

5.8 Rated peak withstand current (I ) [5.7] ............................................................................................ 12

5.9 Rated duration of short circuit (t t ) [5.8] ..................................................................................... 13

k, ke

5.10 Ratings of the internal arc classification (IAC) [5.103] .................................................................. 13

6 Design and construction [6] ............................................................................................................ 14

6.1 General ............................................................................................................................................... 14

6.2 Nameplates [6.11] .............................................................................................................................. 14

6.3 Creepage distances for insulators [6.15] ........................................................................................ 14

6.4 Electromagnetic compatibility (EMC) [6.19] ................................................................................... 14

6.5 Removable parts [6.104] ................................................................................................................... 14

6.6 Internal arc fault [6.106] .................................................................................................................... 14

7 Type tests [7] ...................................................................................................................................... 15

7.1 General [7.1] ....................................................................................................................................... 15

7.2 Dielectric tests [7.2] ........................................................................................................................... 16

7.3 Temperature-rise tests ...................................................................................................................... 16

7.4 Electromagnetic compatibility tests (EMC) [7.9] ............................................................................ 19

7.5 Additional tests on auxiliary and control circuits [7.10]................................................................ 19

7.6 Verification of making and breaking capacities [7.101] ................................................................. 19

7.7 Mechanical operation tests [7.102] .................................................................................................. 19

7.8 Tests to verify the protection of persons against dangerous electrical effects [7.104] ............. 19

7.9 Internal arc test [7.105] ..................................................................................................................... 19

8 Routine tests [8] ................................................................................................................................. 20

8.1 General [8.1] ....................................................................................................................................... 20

8.2 Dielectric test on the main circuit [8.2]........................................................................................... 20

8.3 Partial discharge measurement [8.101] ........................................................................................... 20

8.4 Mechanical operation tests [8.102] .................................................................................................. 20

9 Guide to the selection of switchgear and controlgear (informative) [9] ...................................... 21

9.1 General [9.1] ....................................................................................................................................... 21

9.2 Selection of rated values [9.2] .......................................................................................................... 21

9.3 Ratings related to earthing circuits [9.102] ..................................................................................... 21

9.4 Summary of technical requirements, ratings and optional tests [9.104] ..................................... 21

10 Information to be given with enquiries, tenders and orders (informative) [10] .......................... 23

11 Transport, storage, installation, operating instructions and maintenance [11] ........................ 23

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CLC/TS 50152-4:2021 (E)

12 Safety [12] ........................................................................................................................................... 23

13 Influence of the product on the environment [13] .......................................................................... 24

Annex A (normative) Internal arc fault – Method to verify the internal arc classification

(IAC) .................................................................................................................................................... 25

A.1 Room simulation [A.1]....................................................................................................................... 25

A.2 Indicators (for assessing the thermal effects of the gases) [A.2] ................................................ 25

A.3 Tolerances for geometrical dimensions of test arrangements [A.3] ............................................ 25

A.4 Test parameters [A.4] ........................................................................................................................ 25

A.5 Test procedure [A.5] .......................................................................................................................... 25

Annex B (normative) Partial discharge measurement ............................................................................... 27

B.1 General [B.1] ...................................................................................................................................... 27

B.2 Application [B.2] ................................................................................................................................ 27

B.3 Test circuits and measuring instruments [B.3] .............................................................................. 27

B.4 Test procedure [B.4] .......................................................................................................................... 29

B.5 Maximum permissible partial discharge quantity [B.5] ................................................................ 30

Annex C (informative) Traction load and duty cycle ................................................................................. 31

C.1 Background ........................................................................................................................................ 31

C.2 Evaluation of traction load ............................................................................................................... 31

C.3 Transformation of time-weighted RMS into basic current and duty class .................................. 33

C.4 Examples ............................................................................................................................................ 33

Bibliography .................................................................................................................................................... 41

Figures

Figure 1 — Test cycle for duty class IB and ID ........................................................................................... 17

Figure 2 — Determination of times for duty class IB and ID ...................................................................... 18

Figure B.1 — Partial discharge test circuit (two-phase arrangement) ...................................................... 29

Figure C.1 — Moving window in the time domain demonstrated on a theoretical traction

load 1 with 60 min cycle time ........................................................................................................... 33

Figure C.2 — Transfer of highest values from moving window calculation into the time-

weighted RMS graph ......................................................................................................................... 34

Figure C.3 — Theoretical traction load 2, 10 min cycle time...................................................................... 35

Figure C.4 — Time-weighted RMS values of theoretical traction load 1 and 2 ........................................ 36

Figure C.5 — Typical load current of a mass transit traction load ............................................................ 37

Figure C.6 — Time-weighted RMS graph of the traction load in Figure C.5 ............................................. 38

Figure C.7 — Comparison of traction load with duty classes ................................................................... 40

Tables

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

n Ni
) for circuits connected to the contact line .............................. 11
frequency withstand voltage (Ud

Table 2 — Preferred duty classes ................................................................................................................. 12

Table 3 — Additional nameplate information for traction switchgear ...................................................... 14

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CLC/TS 50152-4:2021 (E)

Table 4 — Summary of technical requirements, ratings and optional tests for traction

switchgear .......................................................................................................................................... 21

Table A.1 — Parameters for internal fault test of traction switchgear according to

compartment construction ............................................................................................................... 26

Table B.1 — Partial discharge - test arrangements for traction switchgear ............................................ 28

Table B.2 — Partial discharge - test voltages and permissible levels for traction

switchgear .......................................................................................................................................... 30

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SIST-TS CLC/TS 50152-4:2021
CLC/TS 50152-4:2021 (E)
European foreword

This document (CLC/TS 50152-4:2021) has been prepared by CLC/SC 9XC “Electric supply and earthing

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

CLC/TS 50152-4:2021 has been elaborated to set out requirements for AC metal-enclosed switchgear and

controlgear which are operated at traction system voltages 15 kV 16,7 Hz or 25 kV 50 Hz named traction

switchgear in this document.

The EN 50152 series under the generic title “Railway applications - Fixed installations - Particular requirements

for a.c. 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 — Devices;

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

transformers;

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

transformers.
— Part 4: AC metal-enclosed traction switchgear.

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

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national committee. A complete

listing of these bodies can be found on the CENELEC website.
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CLC/TS 50152-4:2021 (E)
Introduction

This document needs to be read in conjunction with EN 62271-1:2017 and EN IEC 62271-200:2021.

Where a particular clause of EN IEC 62271-200:2021 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 IEC 62271-200:2021 needs to be adapted accordingly.

The numbering of clauses in the EN 62271 series is not used in this document. For easier understanding the

numbering of clauses in EN IEC 62271-200:2021 is given in square brackets.

Where terms defined in EN 62271-1:2017 and EN IEC 62271-200:2021 conflict with definitions of the same

terms as given in IEC 60050-811:1991 or of the other railway application documents listed in the normative

references, the definitions in EN 62271-1:2017 and EN IEC 62271-200:2021 need to be used.

The term ‘traction switchgear’ is used whenever EN 62271 series uses ‘switchgear and controlgear’, except

for headlines which are kept.

NOTE The suffix N which appears in this standard for rated values is not present in EN 62271-1:2017 and

EN IEC 62271-200:2021.

References in subclauses of EN 62271-1:2017 and EN IEC 62271-200:2021 need to be replaced by

references to applicable subclauses in this document as far as reasonably possible.

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SIST-TS CLC/TS 50152-4:2021
CLC/TS 50152-4:2021 (E)
1 Scope

This document specifies requirements for prefabricated metal-enclosed traction switchgear for alternating

current with traction voltages and frequencies as specified in EN 50163:2004 and used in indoor and outdoor

installations. Enclosures may include fixed and removable components and may be filled with fluid (liquid or

gas) to provide insulation.
NOTE 1 EN 50163 specifies the AC traction systems 15 kV 16,7 Hz and 25 kV 50 Hz.
NOTE 2 This document applies to single-phase or two-phase systems.

For metal-enclosed traction switchgear containing gas-filled compartments, the design pressure is limited to a

maximum of 300 kPa (relative pressure).

NOTE 3 EN 62271-203 can be used as a guide for design and testing in case the design pressure of gas-filled

compartments exceeds 300 kPa (relative pressure).

Components contained in metal-enclosed traction switchgear are to be designed and tested in accordance

with their various relevant standards. This document supplements the standards for the individual components

regarding their installation in traction switchgear assemblies.

This document does not preclude that other equipment may be included in the same enclosure. In such a

case, any possible influence of that equipment on the traction switchgear is to be taken into account.

NOTE 4 Traction switchgear having an insulation enclosure is covered by EN 62271-201. For definition see there or

IEV 441-12-06.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references,

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

EN 50121-5:2017, Railway applications - Electromagnetic compatibility - Part 5: Emission and immunity of

fixed power supply installations and apparatus

EN 50124-1:2017, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances

and creepage distances for all electrical and electronic equipment

EN 50152-1:2012, Railway applications - Fixed installations - Particular requirements for alternating current

switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV

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 62271-1:2017, High-voltage switchgear and controlgear - Part 1: Common specifications for alternating

current switchgear and controlgear

EN IEC 62271-200:2021, High-voltage switchgear and controlgear – Part 200: AC metal-enclosed switchgear

and controlgear for rated voltages above 1 kV and up to and including 52 kV (IEC 62271-200:2021)

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SIST-TS CLC/TS 50152-4:2021
CLC/TS 50152-4:2021 (E)
3 Terms and definitions [3]

For the purposes of this document, the terms and definitions given in EN 50152-1:2012, EN 50152-2:2012,

EN 62271-1:2017, EN IEC 62271-200:2021 and the following apply.
3.1
traction switchgear

metal-enclosed high-voltage switchgear operated at an AC-supply voltage of traction systems according to

EN 50163:2004
3.2
basic current

current value of the main circuit which is assumed to last for longer periods and represents the load carried

continuously by the traction switchgear assembly and on which the overloads are imposed

[SOURCE: EN 50329:2003, 1.3.13, modified – application has been added, “(I , I ,

BL BP

IBS, IBV, IBGL, IBGS)” has been replaced by “IB”, “in a winding” has been replaced by “of a main circuit”, “according

to a given duty class (see 1.3.18)” has been deleted, “transformer” has been replaced by “switchgear

assembly” and “By consequence are defined” has been removed]
3.3
duty class

conventional classification of the current capability of traction switchgear expressed in per unit of the basic

current (IB)

Note 1 to entry : The duty classes, associated with other rated values, define the characteristics of the traction

switchgear.

[SOURCE: EN 50329:2003, 1.3.19, modified - “transformer” has been replaced by “switchgear”, Second

sentence moved to a new Note to entry and "transformer" has been replaced by "switchgear", “Annex A

indicates preferred duty classes and the corresponding basic and rated values” has been removed and NOTE

has been removed]
4 Normal and special service conditions [4]
EN 62271-1:2017, Clause 4 is applicable with the following addition:

Unless otherwise specified in this standard, the traction switchgear is designed to be used under normal

service conditions.

For special service conditions, agreement shall be made between purchaser and supplier. EN 50125-2:2002

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

NOTE 1 The altitude reference condition is 1 000 m as per EN 62271-1. The altitude reference of EN 50124-1 (up to

2 000 m) applies to insulation coordination only and is not considered as a reference condition in this document.

NOTE 2 EN 50125-2:2002 uses classifications of EN 60721-3-3:1995 and EN 60721-3-4:1993 which have been

revised in 2019. Some classifications of EN 50125-2 are only available in the older versions.

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CLC/TS 50152-4:2021 (E)
5 Ratings [5]
5.1 General [5.1]

EN IEC 62271-200:2021, Clause 5 is applicable with the following modifications given hereafter and in 5.2 to

5.10.

NOTE 1 References in this document typically name EN IEC 62271-200:2021. Nevertheless clauses of

EN IEC 62271-200:2021 normally contain references to EN 62271-1 and specify the deviations to it.

EN IEC 62271-200:2021, 5.1 is replaced by the following:
The ratings of traction switchgear are the following:
a) nominal voltage (U ) and number of poles;
b) rated voltage (UNe
and U );
c) rated insulation level (UNi d
d) rated frequency (fr
e) rated continuous current (Ir
f) rated short-time withstand current (Ik
g) rated peak withstand current (Ip
, t ) (for main and earthing circuits);
h) rated duration of short circuit (tk ke
i) rated supply voltage of auxiliary and control circuits (Ua
j) rated supply frequency of auxiliary and control circuits;

k) rated values of the components forming part of the traction switchgear including their operating devices

and auxiliary equipment;
l) rated pressure of compressed gas supply for controlled pressure systems;
m) rated filling level (of fluid-filled compartments);
Optional ratings:
(AC));
n) rated voltage for AC cable test voltage (Uct
(DC));
o) rated voltage for DC cable test voltage (Uct
(DC));
p) rated duration for DC cable test voltage, (tct
) and duty class;
q) basic current (IB
r) ratings of the internal arc classifications (IAC).
5.2 Nominal voltage (U )

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

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CLC/TS 50152-4:2021 (E)
5.3 Rated voltage (U ) [5.2]
EN IEC 62271-200:2021, 5.2 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 traction switchgear (e.g. highest permanent voltage U as defined in

max1
EN 50163:2004).

The value of U shall be used whenever EN 62271-1:2017 or EN IEC 62271-200:2021 reference U unless

Ne r
another value is named explicitly.

NOTE 1 The rated voltage for fixed installations in railway applications is a phase-to-earth value. This also applies to

AT systems having a system voltage of 2x U .

NOTE 2 Making and breaking also under out-of-phase situations applies to conventional and AT systems. They are

specified in EN 50152-1.

NOTE 3 Components forming part of traction switchgear may have individual values of rated voltage in accordance

with their relevant standards.
5.4 Insulation coordination
5.4.1 General

Insulation coordination shall be conducted according to EN 50124-1:2017 e.g. selection of values for Over

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

The rated voltage U shall be used when EN 50124-1:2017 refers to the rated insulation voltage U .

Ne Nm

NOTE 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

The definition of the four overvoltage categories shall be as in EN 50124-1:2017, 4.2.3.2.

The definition of the seven pollution degrees shall be as in EN 50124-1:2017, 4.4 and Table A.4. The typical

pollution degrees of the locations to install traction switchgear are:
— for indoor switchgear: PD3
— for outdoor switchgear: PD4A

The location of the switchgear may provide different environmental conditions and pollution degrees need to

be adapted accordingly, please refer to EN 50124-1:2017, Table E.1

The inside of the switchgear may provide different environmental conditions e.g. by the degree of ingress

protection (IP class) and pollution degrees may be adapted accordingly.
5.4.2 Rated insulation level [5.3]
EN 62271 1:2017, 5.3 is replaced by the following:

The value of the rated impulse withstand voltage UNi and of the power frequency withstand voltage Ud shall be

as given in Table 1, taken from the values listed in EN 50124-1:2017.
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CLC/TS 50152-4:2021 (E)

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

n Ni
) for circuits connected to the contact line
withstand voltage (Ud
U U OV U U
n Ne Ni d
(kV) (kV) (kV) (kV)
17,25 4 125 50
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 Ud as used in EN 62271-1:2017

not by U as used in EN 50124-1:2017. U is used in EN 62271-1:2017 for the rated auxiliary voltage.

a a
For more demanding 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.

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

5.5 Rated frequency (f ) [5.4]
EN IEC 62271-200:2021, 5.4 is replaced by the following:

The standard values of the rated frequency are 16,7 Hz and 50 Hz as listed in EN 50163:2004, Table 1.

5.6 Currents in normal operat
...

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