High-voltage switchgear and controlgear - Gas-filled compartments of AC switchgear and controlgear with rated voltages above 1 kV up to and including 52 kV

This document applies to pressurized compartments (gas-filled compartments with maximum allowable pressure above 50 kPa relative) of AC switchgear and controlgear with rated voltages above 1 kV up to and including 52 kV for indoor or outdoor installations. All gases stable and non-corrosive in the conditions that prevail inside the compartment are covered e.g. gases such as SF6, compressed air, natural-origin gases, alternative fluorinated compounds used alone or in gas mixtures with natural origin gases. The gas or gas mixture being used principally for its dielectric and/or arc-quenching properties.

Gasgefullte Schottraume für Wechselstrom-Schaltgerate und -Schaltanlagen mit Nennspannungen über 1 kV bis einschliel3lich 52 kV

Appareillage à haute tension - Compartiments sous pression de gaz pour appareillage à courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV

Le présent document s’applique aux compartiments sous pression (compartiments sous pression de gaz d’une pression admissible maximale supérieure à 50 kPa, pression relative) d’appareillages à courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV, pour installation intérieure ou extérieure. Tous les gaz stables et non corrosifs dans les conditions régnant à l’intérieur du compartiment sont couverts, comme le SF6, l’air comprimé, les gaz d’origine naturelle et les autres composés fluorés utilisés seuls ou en mélanges de gaz d’origine naturelle, le gaz ou le mélange de gaz étant principalement utilisé pour ses propriétés diélectriques et/ou ses propriétés d’extinction des arcs.

Visokonapetostne stikalne in krmilne naprave - Plinske pregrade za stikalne in krmilne naprave z izmeničnim tokom z naznačeno napetostjo nad 1 kV do vključno 52 kV

General Information

Status
Published
Public Enquiry End Date
28-Oct-2021
Publication Date
14-Nov-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Nov-2022
Due Date
15-Jan-2023
Completion Date
15-Nov-2022

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SLOVENSKI STANDARD
SIST EN 50187:2023
01-januar-2023
Nadomešča:
SIST EN 50187:2001
Visokonapetostne stikalne in krmilne naprave - Plinske pregrade za stikalne in
krmilne naprave z izmeničnim tokom z naznačeno napetostjo nad 1 kV do vključno
52 kV

High-voltage switchgear and controlgear - Gas-filled compartments of AC switchgear and

controlgear with rated voltages above 1 kV up to and including 52 kV
Gasgefullte Schottraume für Wechselstrom-Schaltgerate und -Schaltanlagen mit
Nennspannungen über 1 kV bis einschliel3lich 52 kV

Appareillage à haute tension - Compartiments sous pression de gaz pour appareillage à

courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52

Ta slovenski standard je istoveten z: EN 50187:2022
ICS:
29.130.99 Druge stikalne in krmilne Other switchgear and
naprave controlgear
SIST EN 50187:2023 en

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

---------------------- Page: 1 ----------------------
SIST EN 50187:2023
---------------------- Page: 2 ----------------------
SIST EN 50187:2023
EUROPEAN STANDARD EN 50187
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2022
ICS 29.130.99 Supersedes EN 50187:1996/corrigendum Sep. 1996;
EN 50187:1996
English Version
High-voltage switchgear and controlgear - Gas-filled
compartments of AC switchgear and controlgear with rated
voltages above 1 kV up to and including 52 kV

Appareillage à haute tension - Compartiments sous Hochspannungs-Schaltgeräte und -Schaltanlagen -

pression de gaz pour appareillage à courant alternatif de Gasgefüllte Schotträume für Wechselstrom-Schaltgeräte

tensions assignées supérieures à 1 kV et inférieures ou und -Schaltanlagen mit Bemessungsspannungen über 1 kV

égales à 52 kV bis einschlielßlich 52 kV

This European Standard was approved by CENELEC on 2022-10-03. 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, 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,

Türkiye 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

© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50187:2022 E
---------------------- Page: 3 ----------------------
SIST EN 50187:2023
EN 50187:2022 (E)
Contents Page

European foreword .................................................................................................................................... 3

Introduction ................................................................................................................................................ 4

1 Scope ............................................................................................................................................. 5

2 Normative references ................................................................................................................... 5

3 Terms and definitions .................................................................................................................. 5

4 Normal and special service conditions ...................................................................................... 7

5 Design and construction .............................................................................................................. 7

5.1 General ........................................................................................................................................... 7

5.2 Materials ........................................................................................................................................ 7

5.3 Corrosion allowance .................................................................................................................... 7

5.4 Manholes and inspection openings ............................................................................................ 7

5.5 Design pressure ............................................................................................................................ 7

5.6 Design temperature ...................................................................................................................... 7

5.7 Design ............................................................................................................................................ 8

5.7.1 General ........................................................................................................................................... 8

5.7.2 Calculation methods .................................................................................................................... 8

5.8 Pressure relief devices ................................................................................................................. 9

6 Manufacturing and workmanship ............................................................................................... 9

7 Quality assurance ......................................................................................................................... 9

8 Inspection and testing .................................................................................................................. 9

8.1 Type tests ...................................................................................................................................... 9

8.1.1 General ........................................................................................................................................... 9

8.1.2 Pressure withstand test for gas-filled compartments with pressure relief devices ............10

8.1.3 Pressure withstand test for gas-filled compartments without pressure relief devices ......10

8.2 Routine tests ...............................................................................................................................11

9 Certification and marking ..........................................................................................................11

9.1 Design specification, drawings and data sheets.....................................................................11

9.2 Certificates ..................................................................................................................................11

9.3 Marking ........................................................................................................................................11

9.4 Final Inspection ..........................................................................................................................11

10 Transport .....................................................................................................................................11

Annex A (informative) A-deviations ......................................................................................................13

Bibliography .............................................................................................................................................14

---------------------- Page: 4 ----------------------
SIST EN 50187:2023
EN 50187:2022 (E)
European foreword

This document (EN 50187:2022) has been prepared by CLC/TC17AC “High-voltage switchgear and

controlgear”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2023-10-03
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2025-10-03
conflicting with this document have to be
withdrawn

This document supersedes EN 50187:1996 and all its amendments and corrigenda (if any).

This edition includes the following significant technical changes with respect to EN 50187:1996:

▪ Consistency with EN IEC 62271-200:2021;
▪ Added references to quality standards for welding;
▪ Added Clause 10 on transport;

▪ Removal of the limitation on maximum product pressure x volume of 2 000 bar litres in the scope;

▪ Removal of the 300 kPa design pressure limitation;

▪ Extend scope to non-corrosive gases and gas mixtures in the conditions that prevail inside.

The present document has been established as an international specification for the design, construction,

testing and certification of pressurized compartments used in high-voltage switchgear and controlgear for rated

voltage above 1kV and up to and including 52kV regarding safety aspects.

In this respect, this document constitutes the exclusion of HV switchgear and controlgear from the scope of the

Directive 2014/68/EU (superseding 97/23/EC) concerning pressure equipment. Article 1, 2. (l) excludes

“compartments for high-voltage electrical equipment such as switchgear, controlgear, transformers, and rotating

machines” from the scope of the Directive.

This document supplements the general specifications given in EN IEC 62271-200:2021 in that it provides

specific requirements for pressurized gas-filled compartments of high-voltage switchgear and controlgear for

rated voltage above 1kV and up to and including 52kV.

Due to compartment geometries that are determined by electrical requirements and by installation conditions,

validation of the design requires physical proof testing. Common pressure vessel geometries and their

calculation codes mostly cannot be applied.
National deviations from this document are listed in Annex A (informative).

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.
---------------------- Page: 5 ----------------------
SIST EN 50187:2023
EN 50187:2022 (E)
Introduction

This document covers the requirements for the design, construction, testing, transportation, inspection and

certification (for filling pressure above 50 kPa relative) of gas-filled compartments, for use in AC switchgear and

controlgear for rated voltage above 1 kV and up to and including 52 kV or for associated gas-filled equipment.

Special consideration is given to these compartments for the following reasons:

a) The compartments form the containment of electrical equipment; thus, their shape is determined by

electrical rather than mechanical requirements.

b) The compartments are part of equipment installed in public or restricted areas, but the equipment is

operated by instructed authorized persons only.

c) Compartments are filled with a thoroughly dried gas or gas mixture that is stable and non-corrosive in the

conditions that prevail inside the compartment. For this reason, no internal corrosion allowance is required

on the wall thickness of these compartments.

d) The compartments are subjected to only small fluctuations of pressure as the gas-filling density will be

maintained within close product related limitations to ensure satisfactory insulating and arc-quenching

properties. Therefore, the compartments are not liable to fatigue due to pressure cycling.

e) The design pressure is below 500 kPa (rel.).

Due to the foregoing reasons and to ensure the maximum service continuity as well as to reduce the risk of

moisture and dust entering the compartments which could endanger safe electrical operation of the switchgear

and controlgear, no pressure tests should be carried out after installation and before placing in service and no

periodic inspection of the compartment interiors or pressure tests should be carried out after the equipment is

placed in service.

Examples of gases and gas mixtures which have been applied or proposed to be applied in high-voltage gas-

filled switchgear and controlgear for rated voltage above 1 kV and up to and including 52 kV are mentioned in

IEC 62271-4.

It is possible to apply this document to both other gases and gas mixtures based - or not - on those mentioned

above which comply with the condition c) above.

In this document, the term pressure is referring to the relative pressure unless otherwise specified.

---------------------- Page: 6 ----------------------
SIST EN 50187:2023
EN 50187:2022 (E)
1 Scope

This document applies to pressurized gas-filled compartments of AC switchgear and controlgear with rated

voltages above 1 kV and up to and including 52 kV for indoor or outdoor installations, where the gas or gas

mixture is being used principally for its dielectric and/or arc-quenching properties and where the gases or gas

mixtures in the compartment can be considered in conditions being chemically stable over its lifetime and non-

corrosive to the material of the pressurized compartment in the conditions that prevail inside.

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

current switchgear and controlgear

EN ISO 3834 (all parts), Quality requirements for fusion welding of metallic materials (ISO 3834)

EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded)

— Quality levels for imperfections (ISO 5817)

EN ISO 9606 (all parts), Qualification testing of welders — Fusion welding (ISO 9606)

EN ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for mechanized

and automatic welding of metallic materials (ISO 14732)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
3.1
(gas-filled) compartment

high-voltage compartment in which the insulating gas is at a pressure greater than the pressure outside such

compartment
3.2
manufacturer

individual or body finally responsible for designing and producing the compartment

Note 1 to entry: In this document, this is the switchgear and controlgear manufacturer, even when the compartment is

produced by a sub-manufacturer.
3.3
design pressure (of a compartment)

upper limit of the relative pressure between the pressure inside a compartment at the design temperature, under

defined installation and operating conditions, and the pressure outside that compartment, that is used to

determine the design of the compartment

Note 1 to entry: The transient pressure occurring during and after a breaking operation (e.g. circuit-breaker) is not considered

in the determination of the design pressure.
---------------------- Page: 7 ----------------------
SIST EN 50187:2023
EN 50187:2022 (E)

Note 2 to entry: Design pressure includes the total cumulative pressure increase from gas decomposition by the arc along

lifetime which can happen during normal operation of the switching devices installed inside the gas-filled compartment, for

which they are rated.

Note 3 to entry: This term is equivalent to the “maximum allowable pressure PS” as defined in Directive 2014/68/EU.

3.4
design temperature (of a compartment)

highest average temperature over the compartment, which can be reached by the gas under service conditions

as defined by the manufacturer

Note 1 to entry: Solar radiation should be considered when it has a significant effect on the temperature of the gas and on

the mechanical properties of materials. Similarly, the effects of low temperatures on the properties of materials should be

considered.

Note 2 to entry: This term is equivalent to the “maximum allowable temperature TS” as defined in Directive 2014/68/EU.

3.5
filling pressure (of a compartment)

pressure in kPa (relative) assigned by the manufacturer referred to atmospheric air conditions of 20 °C and

1 013 hPa at which the gas-filled compartment is filled before being put into service

Note 1 to entry: Complete gas filling is done during manufacturing or at the installation site.

3.6
bursting disc safety device

non-reclosing pressure relief device actuated by differential pressure and designed to function by the bursting

of the bursting disc(s), and which is the complete assembly of installed components including, where

appropriate, the bursting disc holder

Note 1 to entry: The term pressure relief device is defined in 3.5.115 of EN IEC 62271-200:2021.

[SOURCE: ISO 4126-2:2018, 3.1, modified – Note 1 to entry added]
3.7
pressure relief safety device

gas tight non-reclosing pressure relief device actuated by differential pressure and designed to open once at a

specified opening pressure, and which is the complete assembly of components including, where appropriate,

the sealing element(s), the pressure-sensitive ele
...

SLOVENSKI STANDARD
oSIST prEN 50187:2021
01-oktober-2021
Visokonapetostne stikalne in krmilne naprave - Plinske pregrade za stikalne in
krmilne naprave z izmeničnim tokom z naznačeno napetostjo nad 1 kV do vključno
52 kV

High-voltage switchgear and controlgear - Gas-filled compartments of AC switchgear and

controlgear with rated voltages above 1 kV up to and including 52 kV
Gasgefullte Schottraume für Wechselstrom-Schaltgerate und -Schaltanlagen mit
Nennspannungen über 1 kV bis einschliel3lich 52 kV

Appareillage à haute tension - Compartiments sous pression de gaz pour appareillage à

courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52

Ta slovenski standard je istoveten z: prEN 50187:2021
ICS:
29.130.99 Druge stikalne in krmilne Other switchgear and
naprave controlgear
oSIST prEN 50187:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 50187:2021
---------------------- Page: 2 ----------------------
oSIST prEN 50187:2021
EUROPEAN STANDARD DRAFT
prEN 50187
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 29.130.99 Will supersede EN 50187:1996 and all of its
amendments and corrigenda (if any)
English Version
High-voltage switchgear and controlgear - Gas-filled
compartments of AC switchgear and controlgear with rated
voltages above 1 kV up to and including 52 kV

Appareillage à haute tension - Compartiments sous Gasgefullte Schottraume für Wechselstrom-Schaltgerate

pression de gaz pour appareillage à courant alternatif de und -Schaltanlagen mit Nennspannungen über 1 kV bis

tensions assignées supérieures à 1 kV et inférieures ou einschliel3lich 52 kV
égales à 52 kV
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2021-10-29.
It has been drawn up by CLC/TC 17AC.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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, 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
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.

Project: 70260 Ref. No. prEN 50187:2021 E
---------------------- Page: 3 ----------------------
oSIST prEN 50187:2021
prEN 50187:2021 (E)
1 Contents Page

2 European foreword .................................................................................................................................... 3

3 Introduction ................................................................................................................................................ 4

4 1 Scope ............................................................................................................................................. 5

5 2 Normative references ................................................................................................................... 5

6 3 Terms and definitions .................................................................................................................. 5

7 4 Normal and special service conditions ...................................................................................... 6

8 5 Design and construction .............................................................................................................. 6

9 5.1 General ........................................................................................................................................... 6

10 5.2 Materials ........................................................................................................................................ 7

11 5.3 Corrosion allowance .................................................................................................................... 7

12 5.4 Manholes and inspection openings ............................................................................................ 7

13 5.5 Design pressure ............................................................................................................................ 7

14 5.6 Design temperature ...................................................................................................................... 7

15 5.7 Design ............................................................................................................................................ 7

16 5.7.1 General ........................................................................................................................................... 7

17 5.7.2 Calculation methods .................................................................................................................... 8

18 6 Manufacturing and workmanship ............................................................................................... 8

19 7 Quality assurance ......................................................................................................................... 8

20 8 Inspection and testing .................................................................................................................. 9

21 8.1 General ........................................................................................................................................... 9

22 8.2 Routine pressure test ................................................................................................................... 9

23 8.3 Type tests ...................................................................................................................................... 9

24 9 Pressure relief devices ................................................................................................................. 9

25 10 Certification and marking ..........................................................................................................10

26 10.1 Design specification, drawings and data sheets.....................................................................10

27 10.2 Certificates ..................................................................................................................................10

28 10.3 Marking ........................................................................................................................................10

29 10.4 Final Inspection ..........................................................................................................................10

30 11 Transport .....................................................................................................................................10

31 Annex A (informative) A-deviations ......................................................................................................11

32 Bibliography .............................................................................................................................................12

---------------------- Page: 4 ----------------------
oSIST prEN 50187:2021
prEN 50187:2021 (E)
34 European foreword

35 This document [prEN 50187:2021] has been prepared by CLC/TC17AC "High-voltage switchgear and

36 controlgear".
37 This document is currently submitted to the Enquiry.
38 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)

39 This document will supersede EN 50187:1996 and all its amendments and corrigenda (if any).

40 This edition includes the following significant technical changes with respect to EN 50187:1996:

41 ▪ Consistency with EN 62271-200;
42 ▪ Added references to quality standards for welding;
43 ▪ Added Clause 11 on transport;

44 ▪ Removal of the limitation on maximum product pressure x volume of 2 000 bar litres in the scope;

45 ▪ Removal of the 300 kPa design pressure limitation;

46 ▪ Compressed air, natural origin gases, alternative fluorinated compounds used alone or in gas mixtures with

47 natural-origin gases are added in the scope.

48 The present document has been established as an international specification for the design, construction,

49 testing and certification of pressurized compartments used in high-voltage switchgear and controlgear,

50 regarding safety aspects.

51 In this respect, this document constitutes the exclusion of HV switchgear from the scope of the Directive

52 2014/68/EU (superseding 97/23/EC) concerning pressure equipment. Article 1, 2. (l) excludes “compartments

53 for high-voltage electrical equipment such as switchgear, controlgear, transformers, and rotating machines”

54 from the scope of the Directive.

55 This document supplements the general specifications given in EN 62271-200 in that it provides specific

56 requirements for pressurized gas-filled compartments of high-voltage switchgear and controlgear.

57 Due to the compartment geometries dictated by electrical and installation conditions they require the verification

58 of the design by proof tests instead of calculations.

59 National deviations from this European Standard are listed in Annex A (informative).

Compressed air, natural-origin gases and alternative fluorinated compounds used alone or in gas mixtures

with natural origin gases are described in future edition 2 of IEC 62271-4.
---------------------- Page: 5 ----------------------
oSIST prEN 50187:2021
prEN 50187:2021 (E)
60 Introduction

61 This document covers the requirements for the design, construction, testing, transportation, inspection and

62 certification of gas-filled compartments with maximum allowable pressure above 50 kPa (relative), for use in AC

63 switchgear and controlgear or for associated gas-filled equipment. Special consideration is given to these

64 compartments for the following reasons:

65 a) The compartments usually form the containment of electrical equipment; thus, their shape is determined

66 by electrical rather than mechanical requirements.

67 b) The compartments are installed in restricted areas and the equipment is operated by instructed, authorized

68 persons only.

69 c) Compartments are normally filled with a thoroughly dried gas or gas mixture that is stable and non-corrosive

70 in the conditions that prevail inside the compartment. For this reason, no internal corrosion allowance is

71 required on the wall thickness of these compartments.

72 d) The compartments are subjected to only small fluctuations of pressure as the gas-filling density will be

73 maintained within close product related limitations to ensure satisfactory insulating and arc-quenching

74 properties. Therefore, the compartments are not liable to fatigue due to pressure cycling.

75 e) The operating pressure is relatively low.

76 Due to the foregoing reasons and to ensure the maximum service continuity as well as to reduce the risk of

77 moisture and dust entering the compartments which could endanger safe electrical operation of the switchgear,

78 no pressure tests should be carried out after installation and before placing in service and no periodic inspection

79 of the compartment interiors or pressure tests should be carried out after the equipment is placed in service.

80 Current known gases and gas mixtures which have been applied or proposed to be applied in high-voltage gas-

81 filled switchgear and controlgear are:
82 • Sulphur Hexafluoride (SF6)
83 • SF6 mixtures with N2 and with CF4
84 • Compressed air
85 • Natural-origin gases and their mixtures (N2, O2, CO2)
86 • C5 F10 O (C5-FK) in mixtures with natural-origin gases (C5-FK mixtures)
87 • C4F7N (C4-FN) in mixtures with natural-origin gases (C4-FN mixtures)
88 • C3H2F4 (HFO1234zeE)

89 Other gases and gas mixtures based or not on those mentioned above which comply with the condition c) above

90 are possible to apply this document.
---------------------- Page: 6 ----------------------
oSIST prEN 50187:2021
prEN 50187:2021 (E)
91 1 Scope

92 This document applies to pressurized compartments (gas-filled compartments with maximum allowable

93 pressure above 50 kPa relative) of AC switchgear and controlgear with rated voltages above 1 kV up to and

94 including 52 kV for indoor or outdoor installations. All gases stable and non-corrosive in the conditions that

95 prevail inside the compartment are covered e.g. gases such as SF6, compressed air, natural-origin gases,

96 alternative fluorinated compounds used alone or in gas mixtures with natural origin gases. The gas or gas

97 mixture being used principally for its dielectric and/or arc-quenching properties.

98 2 Normative references

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

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

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

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

103 current switchgear and controlgear

104 EN 62271-200, High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and

105 controlgear for rated voltages above 1 kV and up to and including 52 kV

106 EN ISO 3834 (all parts), Quality requirements for fusion welding of metallic materials (ISO 3834)

107 EN ISO 5817, Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded)

108 - Quality levels for imperfections (ISO 5817)
109 EN ISO 9606 (all parts), Qualification testing of welders - Fusion welding

110 EN ISO 14732, Welding personnel - Qualification testing of welding operators and weld setters for mechanized

111 and automatic welding of metallic materials (ISO 14732)
112 3 Terms and definitions

113 For the purposes of this document, the following terms and definitions apply.

114 ISO and IEC maintain terminological databases for use in standardization at the following addresses:

115 • ISO Online browsing platform: available at https://www.iso.org/obp
116 • IEC Electropedia: available at https://www.electropedia.org/
117 3.1
118 compartment

119 part of gas-insulated metal-enclosed switchgear retaining the insulating gas under the prescribed conditions

120 necessary to safely maintain the rated insulation level, protecting the equipment against external influences and

121 providing a high degree of protection to personnel
122 3.2
123 manufacturer

124 individual or body finally responsible for designing and producing the compartment

125 Note 1 to entry: In this document, this is the switchgear manufacturer, even when the compartment is produced by a sub-

126 manufacturer.
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oSIST prEN 50187:2021
prEN 50187:2021 (E)
127 3.3
128 design pressure (of a compartment)
129 upper limit of the relative pressure between the pressure insi
...

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