High-voltage switchgear and controlgear - Gas-filled welded composite enclosures of cast and wrought aluminium alloys

This European Standard applies to welded composite enclosures of cast and wrought aluminium alloy pressurized with dry air, inert gases (e.g. sulphur hexafluoride or nitrogen or a mixture of such gases), used in indoor and outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1kV, where the gas is used principally for its dielectric and/or arc-quenching properties with rated voltages
-   above 1 kV and up to and including 52 kV and with gas-filled compartments with design pressure higher than 300 kPa relative pressure (gauge);
-   and with rated voltage above 52 kV.
The enclosures comprise parts of electrical equipment not necessarily limited to the following examples:
-   circuit-breakers;
-   switch-disconnectors;
-   disconnectors;
-   earthing switches;
-   current transformers;
-   voltage transformers;
-   surge arrestors;
-   busbars and connections;
-   etc.
The scope also covers enclosures of pressurized components such as the centre chamber of live tank switchgear, gas-insulated current transformers, etc.

Hochspannungs-Schaltgeräte und Schaltanlagen – Geschweißte, gasgefüllte Kapselungen von Teilen aus Aluminium-Guss und Aluminium-Knetlegierungen

Appareillage électrique haute tension - Enveloppes soudées en alliage d’'aluminium comportant des parties moulées et des parties en métal corroyé sous pression de gaz

La présente Norme européenne s'applique aux enveloppes soudées en alliage d´aluminium comportant des parties moulées et des parties en métal corroyé sous pression d'air sec et de gaz inertes (par exemple, l'hexafluorure de soufre ou l'azote ou un mélange de tels gaz), utilisées dans les installations intérieures et extérieures d'appareillage à haute tension sous des tensions assignées supérieures à 1 kV. Le gaz est utilisé principalement pour ses propriétés diélectriques et/ou d'extinction de l'arc avec des tensions assignées:
-   supérieures à 1 kV et inférieures ou égales à 52 kV, et avec des compartiments à remplissage de gaz dont la pression de calcul est supérieure à une pression relative (manométrique) de 300 kPa;
-   et avec une tension assignée supérieure à 52 kV.
Les enveloppes contiennent des parties d'équipements électriques qui ne se limitent pas nécessairement aux exemples suivants:
-   disjoncteurs;
-   interrupteurs-sectionneurs;
-   sectionneurs;
-   sectionneurs de terre;
-   transformateurs de courant;
-   transformateurs de tension;
-   parafoudres;
-   jeux de barres et barres de raccordement;
-   etc.
Le domaine d'application couvre également les enveloppes de composants sous pression tels que le carter d'appareillage à mécanisme sous tension, les transformateurs de courant à isolation gazeuse, etc.

Visokonapetostne stikalne in krmilne naprave - S plinom polnjena varjena kompozitna ohišja iz litih in gnetljivih aluminijevih zlitin

Ta evropski standard se uporablja za varjena kompozitna ohišja iz lite in gnetljive aluminijeve zlitine s suhim zrakom ter inertnimi plini pod tlakom (npr. žveplov heksafluorid ali dušik ali mešanica takih plinov), ki se uporabljajo v notranjih in zunanjih namestitvah visokonapetostnih stikalnih ter krmilnih naprav z nazivnimi napetostmi nad 1 kV, pri čemer se plin uporablja predvsem zaradi njegovih dielektričnih lastnosti in/ali lastnosti gašenja obloka z nazivnimi napetostmi.
– nad 1 kV in do vključno 52 kV ter s plinskimi razdelki s predvidenim tlakom, višjim od 300 kPa relativnega tlaka (merilnik);
– in z nazivno napetostjo nad 52 kV.
Ohišja zajemajo dele električne opreme, ki niso nujno omejeni na naslednje primere delov:
– odklopniki,
– stikala/ločilna stikala,
– ločilniki,
– ozemljitvena stikala,
– tokovni transformatorji,
– napetostni transformatorji,
– prenapetostni odvodniki,
– zbiralke in priključki,
– drugi deli.
Področje uporabe zajema tudi ohišja s komponentami pod tlakom, kot so sredinska komora stikalne komore pod napetostjo, plinsko izolirani tokovni transformatorji itd.

General Information

Status
Published
Public Enquiry End Date
01-Feb-2018
Publication Date
13-Nov-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Nov-2018
Due Date
14-Jan-2019
Completion Date
14-Nov-2018

RELATIONS

Buy Standard

Standard
SIST EN 50069:2019
English language
16 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 50069:2019
01-januar-2019
1DGRPHãþD
SIST EN 50069:1998
SIST EN 50069:1998/A1:1998
Visokonapetostne stikalne in krmilne naprave - S plinom polnjena varjena
kompozitna ohišja iz litih in gnetljivih aluminijevih zlitin

High-voltage switchgear and controlgear - Gas-filled welded composite enclosures of

cast and wrought aluminium alloys
Hochspannungs-Schaltgeräte und Schaltanlagen – Geschweißte, gasgefüllte
Kapselungen von Teilen aus Aluminium-Guss und Aluminium-Knetlegierungen
$SSDUHLOODJHpOHFWULTXHKDXWHWHQVLRQ(QYHORSSHVVRXGpHVHQDOOLDJHG
DOXPLQLXP

FRPSRUWDQWGHVSDUWLHVPRXOpHVHWGHVSDUWLHVHQPpWDOFRUUR\pVRXVSUHVVLRQGHJD]

Ta slovenski standard je istoveten z: EN 50069:2018
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
77.150.10 Aluminijski izdelki Aluminium products
SIST EN 50069:2019 en

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

---------------------- Page: 1 ----------------------
SIST EN 50069:2019
---------------------- Page: 2 ----------------------
SIST EN 50069:2019
EUROPEAN STANDARD EN 50069
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2018
ICS 29.130.10 Supersedes EN 50069:1991
English Version
High-voltage switchgear and controlgear - Gas-filled welded
composite enclosures of cast and wrought aluminium alloys

Appareillage électrique haute tension - Enveloppes Hochspannungs-Schaltgeräte und Schaltanlagen -

soudées en alliage d'aluminium comportant des parties Geschweißte, gasgefüllte Kapselungen von Teilen aus

moulées et des parties en métal corroyé sous pression de Aluminium-Guss und Aluminium-Knetlegierungen

gaz

This European Standard was approved by CENELEC on 2018-09-03. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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

© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50069:2018 E
---------------------- Page: 3 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
Contents Page

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

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

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

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

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

4 Quality assurance ..................................................................................................................................9

5 Normal and special service conditions ...............................................................................................9

6 Materials .................................................................................................................................................9

6.1 Selection of material..............................................................................................................................9

6.2 Chemical analysis............................................................................................................................... 11

7 Design .................................................................................................................................................. 12

7.1 General ................................................................................................................................................ 12

7.2 Calculation methods .......................................................................................................................... 12

7.3 Inspection and access openings ...................................................................................................... 12

8 Manufacture and workmanship ......................................................................................................... 12

9 Repair of welding defects .................................................................................................................. 12

10 Inspection, testing and certification ................................................................................................. 12

10.1 Type tests ............................................................................................................................................ 12

10.2 Inspection and routine tests .............................................................................................................. 12

10.3 Welding procedure specifications .................................................................................................... 13

10.4 Welder performance tests ................................................................................................................. 13

10.5 Non-destructive testing ..................................................................................................................... 13

10.6 Design specification, drawings and data sheets ............................................................................ 13

10.7 Certificate ............................................................................................................................................ 13

10.8 Stamping ............................................................................................................................................. 13

10.9 Final inspection .................................................................................................................................. 13

11 Pressure relief devices ...................................................................................................................... 13

Annex A (informative) A-deviation ................................................................................................................ 14

Bibliography ..................................................................................................................................................... 15

---------------------- Page: 4 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
European foreword

This document (EN 50069:2018) has been prepared by CLC/TC 17AC, “High-voltage switchgear and

controlgear”.
The following dates are fixed:
• latest date by which this document has (dop) 2019-09-03
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-09-03
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 shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 50069:1991 and EN 50069:1991/A1:1993.

This document has been revised by CENELEC Technical Committee 17AC, "High-voltage switchgear and

controlgear". It supplements the relevant product standards on gas-insulated switchgear and controlgear in

that it provides specific requirements for pressurized high-voltage switchgear and controlgear.

The present EN has been written to get a European specification for the design, construction, testing,

inspection and certification of pressurized enclosures used in high-voltage switchgear and controlgear.

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

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

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

from the scope of the Directive.

This standard deals with gas-filled welded composite enclosures of cast and wrought aluminium alloys. For

different enclosure materials, other European Standards are available.
---------------------- Page: 5 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
Introduction

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

gas-filled enclosures for use specifically in high-voltage switchgear and controlgear, or for associated gas-

filled equipment.
Special consideration is given to these enclosures for the following reasons.

(a) The enclosures usually form the containment of electrical equipment, thus their shape is determined by

electrical rather than mechanical requirements.

(b) The enclosures are installed in restricted access areas and the equipment is operated by instructed,

authorized persons only.

(c) As the thorough drying of the inert, non-corrosive gas-filling medium is fundamental to the satisfactory

operation of the electrical equipment, the gas is periodically checked. For this reason, no internal corrosion

allowance is required on the wall thickness of these enclosures.

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

maintained within close limits to ensure satisfactory insulating and arc-quenching properties. Therefore, the

enclosures are not liable to fatigue due to pressure cycling.
(e) The operating pressure is relatively low.

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

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

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

inspection of the enclosure interiors or pressure tests should be carried out after the equipment is placed in

service.
---------------------- Page: 6 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
1 Scope

This document applies to welded composite enclosures of cast and wrought aluminium alloy pressurized

with dry air, inert gases (e.g. sulphur hexafluoride or nitrogen or a mixture of such gases), used in indoor and

outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1 kV, where the

gas is used principally for its dielectric and/or arc-quenching properties with rated voltages:

— above 1 kV and up to and including 52 kV concerning gas-filled compartments with design pressure

higher than 300 kPa relative pressure (gauge);
— above 52 kV concerning all gas-filled compartments.

The enclosures comprise parts of electrical equipment not necessarily limited to the following examples:

— circuit-breakers;
— switch-disconnectors;
— disconnectors;
— earthing switches;
— current transformers;
— voltage transformers;
— surge arrestors;
— busbars and connections;
— etc.

The scope also covers enclosures of pressurized components such as the centre chamber of live tank

switchgear, gas-insulated current transformers, etc.
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 13445-8:2014, Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of

aluminium and aluminium alloys

EN 50052:2016, High-voltage switchgear and controlgear - Gas-filled cast aluminium alloy enclosures

EN 50064:2018, High-voltage switchgear and controlgear — Gas-filled wrought aluminium and aluminium

alloy enclosures

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

current switchgear and controlgear (IEC 62271-1:2017)
---------------------- Page: 7 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
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:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
enclosure

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

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

and providing a high degree of protection to personnel
3.2
manufacturer

organization that is responsible for the design of the enclosure and the production of the gas-insulated

switchgear
Note 1 to entry: In this standard, this is the switchgear manufacturer.
3.3
founder
organization that produces the raw casting of the enclosure
3.4
design pressure

pressure, expressed in relative terms (gauge), used to determine the thickness of the enclosure

Note 1 to entry: It is at least equal to the maximum pressure in the enclosure at the highest temperature that the gas

used for insulation can reach under specified maximum service conditions.
3.5
design temperature
design temperature of an enclosure

maximum temperature that the enclosures can reach under specified maximum service conditions

[SOURCE: EN 62271-203:2012, 3.112]

Note 1 to entry: This is generally the upper limit of ambient air temperature increased by the temperature rise due to

the flow of rated normal current.

Note 2 to entry: Solar radiation should be taken into account 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 some

materials should be considered.
3.6
design stress

maximum permissible stress on the enclosure imposed by conditions of operation, environment or test that

determine the (material) characteristics of an enclosure
3.7
normal load
load whose occurrence and level can be planned or predicted
3.8
exceptional load

load whose probability of occurrence during the lifetime of product is very small or accidental

---------------------- Page: 8 ----------------------
SIST EN 50069:2019
EN 50069:2018 (E)
3.9
alloy

substance having metallic properties and composed of two or more elements so combined that they cannot

readily be separated by physical means
[SOURCE: EN 12258-1:2012, 2.2.1]
3.10
aluminium alloy

metallic substance in which aluminium predominates by mass and the other elements exceed 1% of the total

content by weight
3.11
casting

product at or near finished shape, formed by solidification of the metal in a mould or a die

[SOURCE: EN 12258-1:2012, 2.5.1]
3.12
melt

quantity of molten metal that has simultaneously undergone the same preparatory treatment in the furnace

before the casting operation
[SOURCE: EN 12258-1:2012, 4.1.3]
3.13
weld defect
imperfections in metallic fusion welds
3.13.1
lack of fusion

lack of union between the weld metal and the parent material or between the successive layers of weld metal

[SOURCE: EN ISO 6520-1:2007, Reference No. 401]
13.3.2
overlap
excessive weld metal covering the parent material surface but not fused to it
[SOURCE: EN ISO 6520-1:2007, Reference No. 506]
3.13.3
undercut

irregular groove at a toe of a run in the parent material or in previously deposited weld metal

[SOURCE: EN ISO 6520-1:2007, Reference No. 5011]
3.13.4
hot crack
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.