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IEC 62271-202 Edition 2.0 2014-03 INTERNATIONAL STANDARD NORME INTERNATIONALE H

IEC 62271-202 Edition 2.0 2014-03 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltage switchgear and controlgear – Part 202: High-voltage/low-voltage prefabricated substation Appareillage à haute tension – Partie 202: Postes préfabriqués haute tension/basse tension INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 29.130.10 PRICE CODE CODE PRIX ISBN 978-2-8322-1483-1 ® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale ® Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. colour inside This is a preview - click here to buy the full publication – 2 – IEC 62271-202:2014 © IEC 2014 CONTENTS FOREWORD ........................................................................................................................... 8 INTRODUCTION ................................................................................................................... 10 1 General ......................................................................................................................... 11 1.1 Scope .............................................................................................................. 11 1.2 Normative references ....................................................................................... 11 2 Normal and special service conditions ........................................................................... 13 2.1 Normal service conditions ................................................................................ 13 2.1.1 Indoor switchgear and controlgear .................................................. 13 2.1.1.101 Low-voltage switchgear and controlgear ......................................... 13 2.1.1.102 Transformer .................................................................................... 13 2.1.2 Outdoor switchgear and controlgear ............................................... 14 2.2 Special service conditions ................................................................................ 14 2.2.1 Altitude ........................................................................................... 14 2.2.2 Pollution ......................................................................................... 14 2.2.3 Temperature and humidity .............................................................. 15 2.2.4 Vibrations, shock or tilting............................................................... 15 2.2.5 Wind speed .................................................................................... 15 2.2.6 Other parameters ........................................................................... 15 3 Terms and definitions .................................................................................................... 15 4 Ratings .......................................................................................................................... 17 4.1 Rated voltage (Ur) ........................................................................................... 18 4.2 Rated insulation level ....................................................................................... 18 4.3 Rated frequency (fr) ......................................................................................... 19 4.4 Rated normal current and temperature rise ...................................................... 19 4.4.1 Rated normal current (Ir) ................................................................ 19 4.4.2 Temperature rise ............................................................................ 19 4.4.3 Particular points of Table 3 ............................................................. 19 4.5 Rated short-time withstand current (Ik) ............................................................ 19 4.5.101 Rated short-time withstand current of high voltage switchgear and controlgear and high voltage interconnection (Ik) ..................... 20 4.5.102 Rated short-time phase to earth withstand current (Ike) .................. 20 4.5.103 Rated short-time withstand currents of low voltage switchgear and controlgear and low voltage interconnection (Icw) .................... 20 4.6 Rated peak withstand current (Ip) .................................................................... 20 4.6.101 Rated peak withstand current (Ip) ................................................... 20 4.6.102 Rated peak phase to earth withstand current (Ipe) .......................... 20 4.6.103 Rated peak withstand currents of low voltage switchgear and controlgear and low voltage interconnection (Ipk) ........................... 20 4.7 Rated durations of short circuit (tk) .................................................................. 20 4.7.101 Rated duration of short circuit (tk) ................................................... 21 4.7.102 Rated duration of phase to earth short circuit (tke) ......................... 21 4.7.103 Rated duration of short circuits for low voltage switchgear and controlgear and low voltage interconnection ................................... 21 4.7.104 Rated duration of short circuits for transformers ............................. 21 4.8 Rated supply voltage of closing and opening devices and auxiliary and control circuits (Ua) .......................................................................................... 21 4.9 Rated supply frequency of closing and opening devices and of auxiliary circuits ............................................................................................................. 21 This is a preview - click here to buy the full publication IEC 62271-202:2014 © IEC 2014 – 3 – 4.10 Rated pressure of compressed gas supply for controlled pressure systems ........................................................................................................... 21 4.11 Rated filling levels for insulation and/or operation ............................................ 21 4.101 Rated maximum power and class of enclosure ................................................. 22 4.101.1 Rated maximum power of the prefabricated substation ................... 22 4.101.2 Rated class of enclosure ................................................................ 22 4.102 Ratings of the internal arc classification ........................................................... 22 4.102.1 General .......................................................................................... 22 4.102.2 Types of accessibility (A, B, AB) ..................................................... 22 4.102.3 Rated arc fault currents (IA, IAe) .................................................... 22 4.102.4 Rated arc fault duration (tA, tAe) .................................................... 23 5 Design and construction ................................................................................................ 23 5.1 Requirements for liquids in switchgear and controlgear .................................... 23 5.2 Requirements for gases in switchgear and controlgear .................................... 23 5.3 Earthing of switchgear and controlgear ............................................................ 24 5.4 Auxiliary and control equipment ....................................................................... 25 5.5 Dependent power operation ............................................................................. 25 5.6 Stored energy operation ................................................................................... 25 5.7 Independent manual or power operation (independent unlatched operation) ........................................................................................................ 25 5.8 Operation of releases ....................................................................................... 25 5.9 Low- and high-pressure interlocking and monitoring devices ............................ 25 5.10 Nameplates...................................................................................................... 25 5.11 Interlocking devices ......................................................................................... 25 5.12 Position indication ............................................................................................ 26 5.13 Degree of protection provided by enclosures ................................................... 26 5.14 Creepage distances for outdoor insulators ....................................................... 26 5.15 Gas and vacuum tightness ............................................................................... 26 5.16 Liquid tightness ................................................................................................ 26 5.17 Fire hazard (flammability) ................................................................................ 26 5.18 Electromagnetic compatibility (EMC) ................................................................ 26 5.101 Protection of the prefabricated substation against mechanical stress ............... 26 5.102 Protection of the environment due to internal defects ....................................... 27 5.103 Internal arc fault ............................................................................................... 27 5.104 Enclosure ........................................................................................................ 28 5.104.1 General .......................................................................................... 28 5.104.2 Fire behaviour ................................................................................ 28 5.104.3 Corrosion ........................................................................................ 29 5.104.4 Covers and doors ........................................................................... 30 5.104.5 Ventilation openings ....................................................................... 30 5.104.6 Partitions ........................................................................................ 30 5.105 Other provisions............................................................................................... 31 5.105.1 Provisions for dielectric tests on cables .......................................... 31 5.105.2 Accessories .................................................................................... 31 5.105.3 Operation aisle ............................................................................... 31 5.105.4 Labels ............................................................................................ 31 5.106 Sound emission ............................................................................................... 31 5.107 Electromagnetic fields ...................................................................................... 31 6 Type tests ..................................................................................................................... 31 This is a preview - click here to buy the full publication – 4 – IEC 62271-202:2014 © IEC 2014 6.1 General ............................................................................................................ 31 6.1.1 Grouping of tests ............................................................................ 32 6.1.2 Information for identification of specimens ...................................... 32 6.1.3 Information to be included in type-test reports ................................ 32 6.2 Dielectric tests ................................................................................................. 33 6.2.1 Ambient air conditions during tests ................................................. 33 6.2.2 Wet test procedure ......................................................................... 33 6.2.3 Conditions of switchgear and controlgear during dielectric tests ............................................................................................... 33 6.2.4 Criteria to pass the test .................................................................. 33 6.2.5 Application of the test voltage and test conditions ........................... 33 6.2.6 Tests of switchgear and controlgear of Ur ≤ 245 kV ........................ 33 6.2.7 Tests of switchgear and controlgear of Ur > 245 kV ........................ 33 6.2.8 Artificial pollution tests for outdoor insulators .................................. 33 6.2.9 Partial discharge tests .................................................................... 33 6.2.10 Dielectric tests on auxiliary and control circuits. .............................. 34 6.2.11 Voltage test as condition check ...................................................... 34 6.2.101 Tests on the high-voltage interconnection ....................................... 34 6.2.102 Tests on low-voltage interconnection .............................................. 35 6.3 Radio interference voltage (r.i.v.) test .............................................................. 36 6.4 Measurement of the resistance of circuits ........................................................ 36 6.5 Temperature-rise tests ..................................................................................... 36 6.5.101 General .......................................................................................... 36 6.5.102 Test conditions ............................................................................... 37 6.5.103 Test methods .................................................................................. 38 6.5.104 Measurements ................................................................................ 41 6.5.105 Acceptance criteria ......................................................................... 42 6.6 Short-time withstand current and peak withstand current tests ......................... 43 6.7 Verification of the protection ............................................................................ 43 6.8 Tightness tests ................................................................................................ 43 6.9 Electromagnetic compatibility tests (EMC) ....................................................... 43 6.10 Additional tests on auxiliary and control circuits ............................................... 44 6.10.1 General .......................................................................................... 44 6.10.2 Functional tests .............................................................................. 44 6.10.3 Electrical continuity of earthed metallic parts test ........................... 44 6.10.4 Verification of the operational characteristics of auxiliary contacts .......................................................................................... 44 6.10.5 Environmental tests ........................................................................ 44 6.10.6 Dielectric test ................................................................................. 44 6.11 X-radiation test procedures for vacuum interrupters ......................................... 44 6.101 Calculations and mechanical tests ................................................................... 44 6.101.1 Wind pressure ................................................................................ 44 6.101.2 Roof loads ...................................................................................... 45 6.101.3 Mechanical impacts ........................................................................ 45 6.102 Internal arc test ................................................................................................ 45 6.102.1 General .......................................................................................... 45 6.102.2 Test conditions ............................................................................... 45 6.102.3 Arrangement of the equipment ........................................................ 46 6.102.4 Test procedure ............................................................................... 46 This is a preview - click here to buy the full publication IEC 62271-202:2014 © IEC 2014 – 5 – 6.102.5 Criteria to pass the test .................................................................. 46 6.102.6 Test report ...................................................................................... 47 6.102.7 Transferability of tests results ......................................................... 48 6.103 Measurement or calculation of electromagnetic fields ...................................... 48 7 Routine tests ................................................................................................................. 48 Replacement: ................................................................................................................ 49 7.101 Dielectric test on the high voltage interconnection............................................ 49 7.102 Voltage withstand tests on auxiliary circuits ..................................................... 49 7.103 Functional tests ............................................................................................... 49 7.104 Verification of correct wiring ............................................................................. 49 7.105 Tests after assembly on site ............................................................................ 49 8 Guide to the selection of prefabricated substation ......................................................... 49 Replacement: ................................................................................................................ 49 8.101 General ............................................................................................................ 49 8.102 Selection of rated values .................................................................................. 50 8.103 Selection of class of enclosure ......................................................................... 50 8.104 Internal arc fault ............................................................................................... 50 8.104.1 General .......................................................................................... 50 8.104.2 Causes and preventive measures ................................................... 51 8.104.3 Supplementary protective measures ............................................... 51 8.104.4 Considerations for the selection and installation ............................. 53 8.104.5 Internal arc test .............................................................................. 53 8.104.6 IAC classification ............................................................................ 53 8.105 Summary of technical requirements, ratings and optional tests ........................ 54 9 Information to be given with enquiries, tenders and orders ............................................ 58 9.1 Information with enquiries and orders .............................................................. 58 9.2 Information with tenders ................................................................................... 59 10 Transport, storage, installation, operation, maintenance ................................................ 60 10.1 Conditions during transport, storage and installation ........................................ 60 10.2 Installation ....................................................................................................... 60 10.2.1 Unpacking and lifting ...................................................................... 61 10.2.2 Assembly ........................................................................................ 61 10.2.3 Mounting ........................................................................................ 61 10.2.4 Connections ................................................................................... 61 10.2.5 Final installation inspection ............................................................. 61 10.2.6 Basic input data by the user ........................................................... 61 10.2.7 Basic input data by the manufacturer .............................................. 61 10.3 Operation ......................................................................................................... 61 10.4 Maintenance .................................................................................................... 62 10.101 Dismantling, recycling and disposal at the end-of-service life ........................... 62 11 Safety ............................................................................................................................ 62 11.101 Electrical aspects ............................................................................................. 62 11.102 Mechanical aspects ......................................................................................... 62 11.103 Thermal aspects .............................................................................................. 62 11.104 Internal arc aspects ......................................................................................... 62 12 Influence of the product on the environment .................................................................. 63 Annex AA (normative) Internal arc fault – Method to verify the internal arc classification (IAC) ........................................................................................................ 64 This is a preview - click here to uploads/s3/info-iec62271-202-ed2-0-b.pdf