इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS/IEC 62271-102 (2003): High-Voltage Switchgear and Controlgear, Part 102: Alternating Current Disconnectors and Earthing Switches [ETD 8: High Voltage Switchgear and Controlgear] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” lS/lEC 62271-102:2003 Wdm7Fm . 4RR d)-? WJ1-lmf mlo2 mmihn?lf%4blm~-wwbi* Indian Standard HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR PART 102 ALTERNATING CURRENT DISCONNECTORS AND EARTHING SWITCHES ICS 29.130.10 @ BIS 2008 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 October 2008 PriceGroup17 lS/lEC 62271-102:2003 CONTENTS 1 General .......................................................................................................................... 1 1.1 Scope ................................................................................................................ 1 1.2 Normative references ......................................................................................... 1 2 Normal andspecial service conditions ............................................................................ 2 3 Definitions ...................................................................................................................... 2 3.1 General terms .................................................................................................... 2 3.2 Assemblies ofswitchgear and controlgear ........................................................... 2 3.3 Parts of assemblies ............................................................................................ 2 3.4 Switching devices .............................................................................................. 2 35 Parts of switching devices .................................................................................. 4 3.6 Operation ........................................................................................................... 5 3.7 Characteristic quantities ........... ......................................................................... 6 4 Ratings. ................................................ ....................................................................... 8 4.1 Rated voltage (Ur) .................... ........................................................................ 9 42 Rated insulation level ......................................................................................... 9 43 Rated frequency ~r) ..................................... ....................................................- 9 44 Rated normal current and temperature rise ........................................................ !3 4.5 Rated short-time withstand current (Ik) ............................................................... 9 46 Rated peak withstand current (IP).......................................................................l O 4.7 Rated duration ofshort-circuit (to),...,.,.,.., ..........................................................lO 4.8 Rated supply voltage of closing and opening devices and of auxiliary and control circuits (Ua) ........................................... ..............................................10 4.9 Rated supply frequency of closing and opening devices and of auxiliary circuits ............................................... .............................................................10 4.10 Rated pressure of compressed gas supply for insulation and/or operation..., ......10 4.101 Rated short-circuit making current ......................................................................l O 4.102 Rated contact zone ............................................................................................l O 4.103 Rated mechanical terminal load .........................................................................ll 4104 Rated values of the bus-transfer current switching capability of disconnectors ....................................................................................................l2 4105 Rated values of the induced current switching capability of earthing switches .............................................................................................................13. 4106 Rated values of mechanical endurance for disconnectors and earthing switches .............................................................................................................13 4.107 Rated values of electrical endurance for earthing switches ................................13 5 Design and construction ................................................................................................l3 5.1 Requirements for liquids in disconnectors and earthing switches . .. ... ......... 13 52 Requirements for gases in disconnectors and earthing switches.........,....,..,,,,,.. 13 5.3 Earthing of disconnectors and earthi~lg switches ................................................l3 5.4 Auxiliary and control equipment.. ..............................................................14 55 Dependent power operation .... ..........................................................................l4 .,,\ 56 Stored energy operation .................................................................. ..................14 57 Independent manua! operation .................... ............................................. ,.......14 lS/lEC 62271-102:2003 5.8 Operation of releases .........................................................................................l4 5.9 Low- and high-pressure interlocking and monitoring devices ..............................14 5.10 Nameplates ........................................................................................................14 5.11 interlocking devices ............................................................................................l5 5.12 Position indication ..............................................................................................l5 5.13 Degree of protection by enclosures ....................................................................l5 5.14 Creepage distances ...........................................................................................l6 5.15 Gasand vacuum tightness .................................................................................l6 5.16 Liquid tightness .................................................................................................l6 5.17 Flammability ......................................................................................................l6 5.18 Electromagnetic compatibility (EMC) ..................................................................l6 5.101 Special requirements for earthing switches ........................................................l6 5.102 Requirements in respect of the isolating distance of disconnectors . .. ...............16 5.103 Mechanical strength ...........................................................................................l7 5.104 Operation of disconnectors and earthing switches– Position of the movable contact system and its indicating and signaling devices ....................................17 5.105 Maximum force required for manual operation ...................................................l8 5.106 Dimensional tolerances ......................................................................................l8 6.1 General ..............................................................................................................19 6.2 Dielectric tests ...................................................................................................2O ,# 6.3 Radio interference voltage (riv) test ...................22 6.4 Measurement of the resistance of circuits ..........................................................22 6.5 Temperature-rise tests .......................................................................................22 6.6 Short-time withstand current and peak withstand current tests .,.,., ,...,..,, ...........22 6.7 Verification of the protection ..............................................................................25 6.8 Tightness tests ....................................................................... ...........................25 6.9 Electromagnetic compatibility tests (EMC) .........................................................25 6.101 Test to prove the short-circuit making performance of earthing switches ............25 6.102 Operating and mechanical endurance tests ........................................................26 I 6.103 Operation under severe ice conditions ...............................................................3O 6.104 Operation at the temperature limits ............................................~......................32 6.105 Test to verify the proper functioning of the position indicating device .................33 6.106 Bus.transfer current switching tests ...................................................................33 6.107 induced current switching tests ..........................................................................33 6.108 Bus.charging switching tests ..............................................................................33 7 Routine tests ................................................................................................................33 7.1 Dielectric test on the main circuit . . . .. ........ . ...... ... .......... ............ . . .. 33 7.2 Dielectric test on auxiliary and control circuits ....................................................34 7.3 Measurement of the resistance of the main circuit ..............................................34 7.4 Tightness test ................................................................................................... 34 7.5 Design and visual checks ................................................................................ 34 7.101 Mechanical operating tests ............................................................... ................34 lS/lEC 62271-102:2003 8 Guide totheselection ofdisconnectors and earthing switches.....,,.....,.,.,.....,....,,,......,,. 35 8.101 General .............................................................................................................. 35 8.102 Selection ofrated values fornormal service conditions ...................................... 35 9 information to begiven with enquiries, tenders and orders .............................................. 38 9.101 information to begiven with enquiries and orders .............................................. 38 9.102 information to begiven with tenders ................................................................... 40 10 Rules for transport, storage, installation, operation andmdintenance ............................ 41 10.1 Conditions during transport, storage and installation ...,...............,........,.,........,., 41 10.2 installation .......................................................................................................~ 41 10,3 Operation ........................................................................................................... 41 10.4 Maintenance ...... .............................................................................................. 42 11 Safety ...,,, ... ....,,,.... 42 11.1 Electrical aspects ............................................................................................... 42 11.2 Mechanical aspects ........................................................................................... 42 11.3 Thermal aspects .......................................................................\....................... 42 11.4 Operation aspects ......................................................................\...................... 42 Annex A (normative) Design andtesting opposition indicating devices .............................. 49 Al General ............................................................................................................ 4g A.2 Normal andspecial service conditions ............................................................. 49 A.3 Definitions ......................................................................................................... 49 A.4 Ratings ............................................................................................................. 50 A.5 Design and construction .................................................................................... 50 f A.6 Type tests ................................... . ................................................................... 50 A.7 Routine tests ........................................................................ .......................... 53 Annex B (normative) Bus-transfer current switching by disconnectors ................................ 54 B.1 General ............... ...................................................................................... .. 54 B.2 Normal andspecial service conditions .................................................... 54 B.3 Definitions ......................................................................................................... 54 B.4 Ratings ............................................................................................................. 55 B.5 Design and construction ................................................................................... 55 B.6 Type tests ........................................................................................t................ 56 Annex C (normative) induced cLrrent switching by earthing switches ................................. 61 C.1 General ............................................................................................................. 61 C.2 Normal andspecial service conditions .............................................................. 61 C.3 Definitions ......................................................................................................... 61 C.4 Ratings .............................................................................................................. 62 C.5 Design and construction ..................... ............... .................................... ......... 63 C.6 Type tests ........................................................ .......... 64 Annex D (informative) Test voltage for the most disadvantageous dielectric position of an earthing switch during operation (temporary approach) .............................................- 71 .. Ill lS/lEC 62271-102:2003 Annex E (normative) Special requirements for disconnectors and earthing switches used in gas-insulated and/or metal-enclosed switch gear ...................................................... 72 E.1 General ....... ..................................................................................................... 72 E.2 Normal and special service conditions .............................................................. 72 E.3 Definitions .......................................................................................................4 72 E.4 Ratings .............................................................................................................. 73 E.5 Design and construction .................................................................................... 73 E.6 Type tests ......................................................................................................... 74 E.7 Routine tests ......................................................................................................75 E.8 Guide to the selection of disconnectors and earthing switches .......................... 76 E.9 Information to be given with enquiries, tenders and orders ................................ 76 E.10 Rules for transport, storage, installation, operation and maintenance ................ 76 Annex F (normative) Gas-insulated metal-enclosed switchgear for rated voltages 72,5 kV and above – Requirements for switching of bus-charging currents by disconnectors ..... ........ 77 F.1 General ............................................................................................................. 77 F.2 Normal and special service conditions .............................................................. 77 F.3 Definitions ........................................................................................................ 77 F6 Type tests ........................................................................................................ 78 Figure 1 –Fixed contact parallel to support ........................................................................ 42 Figure 2 – Fixed contact (as indicated in figure 8) perpendicular to support ....................... 43 Figure 3 – Three-phase test arrangement for disconnectors and earthing switches with rated voltages below52 kV ................................................................................................ 43 Figure 4 – Single-phase test arrangement for disconnectors with a horizontal isolating distance and for earthing switches with rated voltage of 52 kV and above .......................... 44 Figure 5 – Single-phase test arrangement for divided support disconnectors (earthing switches) with a vertical isolating distance with rated voltages of 52 kV and above to be used with flexible conductors ......................................................................................i... 45 Figure 6 – Single-phase test arrangement for divided support disconnectors (earthing switches) with a vertical isolating distance with rated voltages of 52 kV and above to be used with rigid conductors ............................................................................................. 46 Figure 7 – Example of the application of rated mechanical terminal .loads to a two- column disco nnector .......................................................................................................... 47 Figure 8 – Example of the application of rated mechanical terminal loads to a pantograph disconnector ..................................................................................................... 48 Figure A.1 – Position indicating device ............................................................................... 53 Figure B.1 - Test circuits for bus-transfer current making and breaking tests ...................... 60 Figure C.1 – Test circuit for electromagnetically induced current making and breaking tests ............................................................................................................................ ...... 64 Figure C.2 - Test circuits for electrostatically induced current making and breaking tests ,., 70 Figure F.1 –Test circuit for test duty l ................................................................................ 80 Figure F.2 – Typical voltage waveform (Including VFT and FT components) ........................ 81 Figure F.3. Test circuit fortest duty 2................................................................................ 82 Figure F.4–Test circuit for test duty 3................................................................................. 82 iv lS/lEC 62271-102:2003 Table 1 – Recommended contact zones for “fixed” contacts supported by flexible conductors .......................................................................................................................... 11 Table 2- Recommended contact zones for “fixed” contacts supported by ’rigid conductors .......................................................................................................................... 11 Table 3–Recommended static mechanical terminal loads .................................................. 12 Table 3a – Classification of disconnectors for mechanical endurance .................................. 13 Table 4– Nameplate information ......................................................................................... 15 Table 5– Power frequency 1 min withstand voltages .......................................................... 21 Table 6. Power frequency voltage tests ............................................................................. 34 Table B.1 - Rated bus-transfer voltages for disconnectors .................................................. 55 Table Cl – Standardized values of rated induced currents and voltages for earthing switches .................................................................................................................. ............ 63 Table C.2 – Standardized values of recovery voltages for electromagnetically induced current breaking tests ......................................................................................................... 66 Table C.3 – Test circuit capacitances (Cl values) for electrostatically induced current making and breaking tests ................................................................................................... 67 Table F.1 –Testvoltages for making and breaking tests ....................................................~ 79 Table F.2– Specified bus-charging currents ....................................................................... 83 Table F.3– Specified number of tests ................................................."................................ 83 ..i lS/lEC 62271-102:2003 High-Voltage Switchgear and Controlgear Sectional Committee, ETD 08 NATIC)NAL FOREWORD This Indian Standard (Part 102) which is identical with IEC 62271-102:2003 ‘High-voltage switchgear and controlgear — Part 102: Alternating current disconnectors and earthing switches’ issued by the International Electrotechnical Commission (lEC) was adopted by the Bureau of Indian Standards on the recommendation of the High-Voltage Switchgear and Controlgear Sectional Committee and approval of the EIectrotechnical Division Council. This standard is to be read in conjunction with IEC 60694:1996 ‘Common specifications for high- voltage switchgear and controlgear standards’. I@order to simplify the indication of corresponding requirements the same numbering of clauses and subclauses is used as in IEC 60694 : 1996. Amendments to these clauses and subclauses are given under the same numbering, whilst additional subclauses are numbemd from 101. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations, Ceflain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’. b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to cectain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places are listed below along with their degree of equivalence for the editions indicated: /ntematior7a/ Standard Corresponding Indian Standard Degree of Equivalence IEC 60137: 1995 Insulating bushings for IS 2099: 1986 Bushings for alternating Technically alternating voltages above 1 000 V voltages above 1000 volts (second Equivalent revision) IEC 60265-1 : 1998 High-voltage IS 9920 (Part 1) : 2002 High-voltage Identical switches — Part 1: Switches for rated switches: Pafl 1 Switches for rated voltages above 1 kV and less than 52 kV voltages above 1 kV and less than 52 kV (first revision) IEC 60265-2 : 1988 High-voltage IS 9920 (Parl 2) : 2001 High-voltage do switches — Part 2: High-voltage switches switches: Part 2 High-voltage switches for rated voltages of 52 kV and above for rated voltages of 52 kV and above (first revision) IEC 60298 : 1990 A.C. metal-enclosed IS 3427 : 1997 A.C. metal enclosed do switchgear and controlgear for rated switchgear and controlgear for rated voltages above 1 kV and up to and voltages above 1 kV and up to and including 52 W including 52 kV (first revision) IEC 60466 : 1987 A.C. insulation- IS 14659:1999 A.C. insulation-enclosed do errclosed switchgear and controlgear for switchgear and controlgear for rated rated voltages above 1 kV and up to and voltages above 1 kV and up to and including 38 kV including 38 kV vi