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BS EN 62271-203:2012

BS EN 62271-203:2012

$215.11

High-voltage switchgear and controlgear – Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV

Published By Publication Date Number of Pages
BSI 2012 84
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IEC 62271-203:2011 specifies requirements for gas-insulated metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating gas other than air at atmospheric pressure, for alternating current of rated voltages above 52 kV, for indoor and outdoor installation, and for service frequencies up to and including 60 Hz. This second edition of IEC 62271-203 cancels and replaces the first edition of IEC 62271-203, published in 2003, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – adopting the structure and the content to IEC 62271-1, – harmonisation with IEEE C37.122, – addition of the new Annex F and the new Annex G. This publication is to be read in conjunction with /2. The contents of the corrigendum of July 2013 have been included in this copy.

PDF Catalog

PDF Pages PDF Title
8 English

CONTENTS
12 1 General
1.1 Scope
1.2 Normative references
13 2 Normal and special service conditions
2.1 Normal service conditions
2.2 Special service conditions
14 3 Terms and definitions
Tables

Table 1 ā€“ Reference table of service conditions relevant to GIS
16 4 Ratings
17 4.1 Rated voltage (Ur)
4.2 Rated insulation level
18 Table 2 ā€“ Rated insulation levels for rated voltages for equipment of range I
Table 3 ā€“ Rated insulation levels for rated voltages for equipment of range II
19 4.3 Rated frequency (fr)
4.4 Rated normal current and temperature rise
4.5 Rated short-time withstand current (Ik)
4.6 Rated peak withstand current (Ip)
4.7 Rated duration of short-circuit (tk)
4.8 Rated supply voltage of closing and opening devices and of auxiliary and control circuits (Ua)
20 4.9 Rated supply frequency of closing and opening devices and of auxiliary circuits
4.10 Rated pressure of compressed gas supply for controlled pressure systems
4.11 Rated filling levels for insulation and/or operation
5 Design and construction
5.1 Requirements for liquids in switchgear and controlgear
5.2 Requirements for gases in switchgear and controlgear
5.3 Earthing of switchgear and controlgear
21 5.4 Auxiliary and control equipment
5.5 Dependent power operation
5.6 Stored energy operation
5.7 Independent manual or power operation (independent unlatched operation)
5.8 Operation of releases
5.9 Low- and high-pressure interlocking and monitoring devices
22 5.10 Nameplates
5.11 Interlocking devices
5.12 Position indication
5.13 Degrees of protection by enclosures
5.14 Creepage distances for outdoor insulators
23 5.15 Gas and vacuum tightness
5.16 Liquid tightness
5.17 Fire hazard (flammability)
5.18 Electromagnetic compatibility (EMC)
24 5.19 X-Ray emission
5.20 Corrosion
5.101 Pressure coordination
Figures

Figure 1 – Pressure coordination
25 5.102 Internal fault
26 5.103 Enclosures
Table 4 ā€“ Performance criteria
27 5.104 Partitions
29 5.105 Pressure relief
Figure 2 ā€“ Example of arrangement of enclosures and gas compartments
30 5.106 Noise
5.107 Interfaces
31 6 Type tests
6.1 General
32 Table 5 ā€“ Example of grouping of type tests
33 6.2 Dielectric tests
35 Table 6 ā€“ Test voltage for measuring PD intensity
36 6.3 Radio interference voltage (r.i.v.) test
6.4 Measurement of the resistance of circuits
6.5 Temperature-rise tests
37 6.6 Short-time withstand current and peak withstand current tests
38 6.7 Verification of the protection
6.8 Tightness tests
39 6.9 Electromagnetic compatibility tests (EMC)
6.10 Additional tests on auxiliary and control circuits
6.11 X-radiation test procedure for vacuum interrupters
6.101 Verification of making and breaking capacities
6.102 Mechanical and environmental tests
40 6.103 Proof tests for enclosures
41 6.104 Pressure test on partitions
6.105 Test under conditions of arcing due to an internal fault
42 6.106 Insulator tests
6.107 Corrosion test on earthing connections
43 6.108 Corrosion tests on enclosures
7 Routine tests
7.1 Dielectric test on the main circuit
44 7.2 Tests on auxiliary and control circuits
7.3 Measurement of the resistance of the main circuit
7.4 Tightness test
7.5 Design and visual checks
7.101 Pressure tests of enclosures
45 7.102 Mechanical operation tests
7.103 Tests on auxiliary circuits, equipment and interlocks in the control mechanism
7.104 Pressure test on partitions
8 Guide to the selection of switchgear and controlgear
8.1 Selection of rated values
8.2 Continuous or temporary overload due to changed service conditions
46 9 Information to be given with enquiries, tenders and orders
9.1 Information with enquiries and orders
9.2 Information with tenders
10 Transport, storage, installation, operation and maintenance
10.1 Conditions during transport, storage and installation
10.2 Installation
49 Table 7 ā€“ On site test voltages
51 10.3 Operation
52 10.4 Maintenance
11 Safety
12 Influence of the product on the environment
53 Annex A (normative)
Test procedure for dielectric teston three-phase encapsulated GIS, range II
Table A.1 ā€“ Switching impulse test conditions above 245Ā kV
54 Annex B (normative) Methods for testing gas-insulated metal-enclosed switchgear
under conditions of arcing due to an internal fault
57 Annex C (informative)
Technical and practical considerations of site testing
62 Annex D (informative)
Calculation of pressure rise due to an internal fault
63 Annex E (informative)
Information to be given with enquiries, tenders and orders
Table E.1 ā€“ Normal and special service conditions
64 Table E.2 ā€“ Ratings
65 Table E.3 ā€“ Design and construction
66 Table E.4 ā€“ Bus ducts
Table E.5 ā€“ Bushing
67 Table E.6 ā€“ Cable connection
Table E.7 ā€“ Transformer connection
Table E.8 ā€“ Current transformer
Table E.9 ā€“ Inductive voltage transformer
68 Table E.10 ā€“ Documentation for enquiries and tenders
69 Annex F (informative)
Service continuity
70 Figure F.1 ā€“ Impact due to the removal of common partitionbetween busbar-disconnector
71 Figure F.2 ā€“ Impact of GIS partitioning on service continuity
Figure F.3 ā€“ Single line diagram with gas partitioning scheme
73 Figure F.4 ā€“ Localisation and isolation
Figure F.5 ā€“ Removal of busbar disconnector in SECTION-1
74 Figure F.6 ā€“ Removal of busbar disconnector in SECTION-3
Figure F.7 ā€“ Extension
75 Figure F.8 ā€“ On-site dielectric test
76 Table F.1 ā€“ Example for service continuity requirements
78 Annex G (informative)
Insulation levels for GIS with rated voltages higher than 800 kV
Table G.1 ā€“ Insulation levels used for GIS with rated voltages higherthan 800Ā kV in different countries
79 Annex H (informative)
List of notes concerning certain countries
80 Bibliography

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BS EN 62271-203:2012
$215.11