Air-Insulated Switchgear 8BT1

www.siemens.com/medium-voltage-switchgearAnswers for infrastructure and cities.Switchgear Type 8BT1,up to 24 kV, air-insulatedMedium Voltage Switchgear · Catalog HA 26.31 · 2012 Switchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 20122Switchgear type 8BT1is a factory-assembled,type-tested switchgearfor indoor installationaccording toIEC 62 271-200 andVDE 0671-200.R-HA26-013. epsBenefits (see also page 10 for details)• Saves lives• Peace of mind• Increases productivity• Saves money• Preserves the environment8BT1 panelMaximum ratings 24 kV / 25 kA / 2000 ATypical usesThe 8BT1 switchgear can be used in transformerand switching substations, e.g.:Application:Power supply system¦ Power supply companiesApplication: Industry¦ Power stations¦ Cement industry¦ Automobile industry¦ Iron and steel works¦ Rolling mills¦ Mining industry¦ Textile, paper and foodindustries¦ Chemical industry¦ Petroleum industry¦ Pipeline installations¦ Electrochemical plants¦ Petrochemical plants¦ Diesel power plants¦ Emergency power supplyinstallations¦ Lignite open-cast mines¦ Traction power suppliesContents ApplicationPageApplicationBenefits 2Typical uses 2 and 3Technical DataRatings 4Classification, dimensions, 5room planningProduct RangePanels 6 and 7DesignPanel design 8Compartments, interlocks, 9operationBenefits and features 10StandardsStandards, specifications, 11 and 12guidelines, notesInvalid: Catalog HA 26.31 · 2007Benefits, typical usesThe products and systems described in this catalogare manufactured and sold according to a certifiedquality and environmental management system(acc. to ISO 9001 and ISO 14001).Switchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 3Typical usesApplicationR-HA25-326epsR-HA25-308epsApplicationPublic powersupply systemR-HA25-327epsR-HA26-014.tifApplicationIndustryApplicationIndustry8BT1 switchgearSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 201241) Depending on the rated currentof the HV HRC fuses installed.Switchgear 12 kVRated voltage 12 kVRated frequency 50 HzRated short-duration power-frequency withstand voltage 28 kVRated lightning impulse withstand voltage 75 kVRated short-time withstand current, 3 s 25 kARated peak withstand current at 50 Hz 63 kARated short-circuit breaking current 25 kARated short-circuit making current at 50 Hz 63 kARated normal current of busbar 2000 ARated normal current of feeders– with circuit-breaker– with switch-disconnector– with switch-disconnector with fuses2000 A630 A200 A 1)Electrical data (maximum values) of 8BT1Ratings Rated values(max.)Switchgear 7.2 kVRated voltage 7.2 kVRated frequency 50 HzRated short-duration power-frequency withstand voltage 20 kVRated lightning impulse withstand voltage 60 kVRated short-time withstand current, 3 s 25 kARated peak withstand current at 50 Hz 63 kARated short-circuit breaking current 25 kARated short-circuit making current at 50 Hz 63 kARated normal current of busbar 2000 ARated normal current of feeders– with circuit-breaker– with switch-disconnector– with switch-disconnector with fuses2000 A630 A200 A 1)Ratings Rated values(max.)Switchgear 24 kVRated voltage 24 kVRated frequency 50 HzRated short-duration power-frequency withstand voltage 50 kVRated lightning impulse withstand voltage 125 kVRated short-time withstand current, 3 s 25 kARated peak withstand current at 50 Hz 63 kARated short-circuit breaking current 25 kARated short-circuit making current at 50 Hz 63 kARated normal current of busbar 2000 ARated normal current of feeders– with circuit-breaker– with switch-disconnector– with switch-disconnector with fuses2000 A630 A200 A 1)Technical DataRatingsSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 5Classification of the 8BT1 switchgear acc. to IEC 62 271-200Dimensions????????? ?? ?????????????????????????????????????????? ?????All panel types Dimensions7.2/12 kV in mmWidth B For max. 1250 A vacuum circuit-breaker 600For 2000 A vacuum circuit-breaker 800For switch-disconnector 600Height H1 With standard low-voltage compartment 2050H2 With pressure relief system 3) 2300H2 With lead-off duct 2350Depth T1 Without low-voltage compartment 1200T2 With low-voltage compartment 141024 kVWidth B For max. 1250 A vacuum circuit-breaker 800For 2000 A vacuum circuit-breaker 1000For switch-disconnector 800Height H1 With standard low-voltage compartment 2050H2 With pressure relief system 3) 2300H2 With lead-off duct 2350Depth T1 Without low-voltage compartment 1200T2 With low-voltage compartment 1410Construction and designPartition class for circuit-breakerLoss of service continuity categoryPMLSC2ACompartment accessibility (standard)– Busbar compartment– Switching-device compartment– Connection compartment, front connectionTool-basedInterlock-basedInterlock-basedInternal arc classificationClassification IACAccessibility– Front– Rear– LateralType AType AType ATest current kATest duration s250.1/1.0Single-row arrangement (plan view)For dimensions B (width) and T (depth) refer to the table on this pageFront connectionRoom planning(room heightW 2800 mm,W 3000 mm 3),W 2400 mm 2))Front1) For panel replacement:Control aisleW 1600 mm2) Lead-off duct required3) For an arc fault duration of 1 sTechnical DataClassification, dimensions, room planningSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 20126??????????? ?Circuit-breaker panel Disconnecting panel Switch-disconnector panel1) The details refer toconventional single-coresealing ends and arereduced by 1 cable whenusing surge arresters.ComponentsCurrent transformerVoltage transformerwithout primary fusesCapacitive voltagedetection systemMake-proofearthing switchCable sealing ends 1)max. 4 x 500 mm2per phaseHV HRC fuseSION vacuumcircuit-breakerDisconnectorSwitch-disconnector?????????? ????????????????????????????? ??????? ????? ?????????????????????????? ? ??????? ???????? ??????????????????Product RangePanelsSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 7?????????? ? ???????????????? ??????????????? ? ???????????????????????????? ???????Busbar connection panelBus sectionalizer II (mirror-image installation also possible)Bus sectionalizer I (mirror-image installation also possible) Metering panelComponentsCircuit-breakerpanelBus riserpanel1) The details refer toconventional single-coresealing ends and arereduced by 1 cable whenusing surge arresters.???????? ?? ?Current transformerVoltage transformerwithout primary fusesCapacitive voltagedetection systemVoltage transformerwith primary fusesMake-proofearthing switchSION vacuumcircuit-breakerCable sealing ends 1)max. 4 x 500 mm2per phasePanelsProduct RangeCircuit-breakerpanelBus riserpanelSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 20128???????????? ?????????????? ??????? ?????????????????????????????????????? ????????????? ????? ????Basic panel design (example)A Combined switching-device/connection compartmentB Busbar compartmentD Switching-device truckE Low-voltage compartment/low-voltage nicheDesign: Circuit-breaker panelDesign: Switch-disconnector panelCircuit-breaker panel12 kV, 1250 ALegend for panel design:1 Door of low-voltagecompartment2 Opening for locking or unlockingthe low-voltage compartmentdoor3 Option: Capacitive voltagedetection system for feeder andbusbar4 High-voltage door of switching-device compartment5 Inspection window for checkingthe disconnected/service posi-tion of the switching-device truck6 Opening for locking or unlockingthe high-voltage door7 Actuating opening for the busbarearthing switch8 Actuating opening for mecha-nical charging of circuit-breakerclosing spring9 Openings for manual operation(ON/OFF) of the circuit-breaker10 Inspection window for checkingthe CLOSED/OPEN indication ofthe circuit-breaker, the “springcharged” indication andoperating cycle counter11 Knob for opening the door12 Actuating opening for movingthe switching-device truck13 Actuating opening for theearthing switch14 Busbars15 Make-proof busbar earthingswitch16 Bushings17 Busbar voltage transformer18 Current transformer19 Voltage transformer20 Make-proof earthingswitch21 Cable sealing ends22 Pressure relief23 Low-voltage plug connector24 Switching-device truck25 Switch-disconnector26 HV HRC fuse27 Integrated partition28 Operating mechanism forswitch-disconnector29 Operating mechanism forearthing switch30 Actuating opening for theswitch-disconnector31 Inspection window for checkingthe switch-disconnector position,the earthing switch position andthe “fuse tripped” indicationSwitch-disconnector panel12 kV, 1250 ADesignPanel designSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 9Combined switching-device/connection compartment• All switching operations withhigh-voltage door closed• Pressure relief upwards• Doors, front frames and endwalls are powder-coated withepoxy resin. Rear wall andceiling components are madeof galvanized sheet metal• Partition class:Metallic, earthed shuttersand partitions ensure parti-tion class PM for circuit-breaker panel• High-voltage door pressure-resistant in the event ofinternal arcs in the panel• Metallic ducts on the side forlaying control cables• Interlocking betweenhigh-voltage door andcircuit-breaker truck ensuresinterlock-based access• Switching-device compart-ment to accommodate com-ponents for implementingvarious panel versions with– Vacuum circuit-breaker– Disconnecting truck– Metering truck• Suitable for connection of– Single-core cables– Three-core cables• Earthing busbar• Connection from front inter-lock-based• Option: Pressure-resistantfloor cover• Use of block-type currenttransformers• Interlocked high-voltage doorwith connection from frontprovides interlock-based ac-cessComponents at the panelconnection (option)• Single-core XLPE cablesup to max. 4 x 500 mm2per phase• Three-core XLPE cablesup to max. 2 x 300 mm2per phase• Coupling electrode forcapacitive voltage detectionsystem• Voltage transformers– Cast-resin insulated– Max. 3 x 1-pole– Fixed-mounted, withoutprimary fuses• Make-proof earthing switches– With manual operatingmechanism– In addition to standard inter-locking of earthing switch/circuit-breaker truck,optionally lockable or withelectromagnetic interlock• Surge arresters– Surge arresters for protectingthe switchgear against exter-nal overvoltagesBusbar compartment• Pressure relief upwards• Busbar transverse partitionbetween panels• Busbars made of flat copper,bolted from panel to panel– For rated normal currentsup to 2000 A• Bolted front covers providetool-based access• Option: Coupling electrodefor capacitive voltagedetection system• Options: Possibility of install-ing the following compo-nents– Voltage transformers– Busbar earthing switchInterlocks• Interlocking conditionsare satisfied according toIEC 62 271-200 /VDE 0671-200• Earthing switch can only beoperated with circuit-breakertruck in disconnected posi-tion• Circuit-breaker truck can onlybe moved with circuit-breaker“OPEN” and earthing switch“OPEN”• Circuit-breaker can only beoperated in interlocked dis-connected or service position• Mechanical coding on thecircuit-breaker truck preventsinsertion of similar circuit-breaker trucks for lower ratednormal currents into panelswith higher rated normal cur-rents• Circuit-breaker truck can onlybe moved from disconnectedto service position with doorclosed• The high-voltage door canonly be opened when thecircuit-breaker truck is indisconnected position• Option: ElectromagneticinterlocksLow-voltage compartment• Accommodates equipmentfor protection, control,measuring and metering• Separated from the high-voltage part of the panel,safe-to-touch• Low-voltage compartmentcan be removed, bus wiresand control cables areplugged in• Option: Test sockets forcapacitive voltage detectionsystemLow-voltage cables• Control cables of the panelare flexible and have metalliccovers• Connection between switch-ing-device truck and panelwiring to low-voltage com-partment via 64-pole codedplug connectors• Bus wires pluggable frompanel to panelCompartments, interlocks, operationDesignSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 201210Benefits Features• Saves lives • All switching operations including emergency manual operations with high-voltage door closed• Interlocking between high-voltage door and switching devices• Rack-in, rack-out operations of the circuit-breaker truck with high-voltage door closed• Metallic, earthed shutters and partitions, partition class: PM for circuit-breaker panels• Internal arc classification up to 25 kA, 1 s, according to IEC 62 271-200, Annex A• Use of vacuum circuit-breakers• Peace of mind • Factory-assembled, type-tested switchgear according to IEC 62 271-200• Type testing of the circuit-breaker and make-proof earthing switch inside the panel• Use of standard, worldwide available components• Use of maintenance-free vacuum circuit-breakers• Quality management according to DIN EN ISO 9001• Design based on global best practice sharing and experience, compact design with high flexibility• Increases productivity • Use of metallic, earthed shutters and partitions ensures highest loss of service continuitycategory of the switchgear (LSC2A according to IEC 62 271-200) during maintenance• Use of maintenance-free vacuum circuit-breakers• Cable testing without isolating the busbar• Saves money • Use of maintenance-free vacuum circuit-breakers• Compact design requires minimum space• Preserves theenvironment• As insulating medium, air is absolutely neutral to the environment• Service life > 35 years optimizes the energy balance additionally• The materials used are fully recyclable without special knowledgeDesignBenefits and featuresR-HA26-015. epsSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 11???????? ??? ??? ??? ??? ??? ??? ??????? ???? ????? ? ????? ????????????? ?? ?Overview of standards (April 2012)IEC standard VDE standard EN standardSwitchgear 8BT1 IEC 62271-1 VDE 0671-1 EN 62271-1IEC 62271-200 VDE 0671-200 EN 62271-200Devices Circuit-breaker IEC 62271-100 VDE 0671-100 EN 62271-100Disconnector andearthing switchIEC 62271-102 VDE 0671-102 EN 6 271-102Switch-disconnector IEC 60265-1 VDE 0670-301 EN 60265-1Switch-disconnector /fuse combinationIEC 62271-105 VDE 0671-105 EN 62271-105HV HRC fuses IEC 60282-1 VDE 0670-4 EN 60282-1Voltage detection systems IEC 61243-5 VDE 0682-415 EN 61243-5Degree ofprotection– IEC 60529 VDE 0470-1 EN 60529Insulation – IEC 60071 VDE 0111 EN 60071Transformers Current transformers IEC 60044-1 VDE 0414-1 EN 60044-1Voltage transformers IEC 60044-2 VDE 0414-2 EN 60044-2Installation – IEC 61936-1 VDE 0101 –Altitude correction factor KaFor site altitudesabove 1000 m, thealtitude correctionfactor Ka is recom-mended, depend-ing on the actualsite altitude abovesea level.Rated short-dur. power-frequ. withstand volt. for site altitudes > 1000 m to be selectedW Rated short-duration power-frequency withstand voltage up tow 1000 m · KaRated lightning impulse withstand voltage for site altitudes > 1000 m to be selectedW Rated lightning impulse withstand voltage up tow 1000 m · KaExample:3000 m site altitude above sea level,17.5 kV switchgear rated voltage95 kV rated lightning impulse withstand voltageRated lightning impulse withstandvoltage to be selected 95 kV · 1.28 = 122 kVStandardsThe switchgear complies withthe relevant standards andspecifications applicable atthe time of type tests.In accordance with the harmo-nization agreement reached bythe countries of the EuropeanCommunity, their nationalspecifications conform to theIEC standard.Type of service locationThe switchgear can be usedfor indoor installation inaccordance with IEC 61936(Power installations exceeding1 kV AC) and VDE 0101• Outside lockable electricalservice locations at placeswhich are not accessible tothe public. Enclosures ofswitchgear can only beremoved with tools.• Inside lockable electricalservice locations. A lockableelectrical service location isa place outdoors or indoorsthat is reserved exclusivelyfor housing electrical equip-ment and which is kept un-der lock and key. Access isrestricted to authorized per-sonnel and persons whohave been properly instruc-ted in electrical engineering.Untrained or unskilled per-sons may only enter underthe supervision of authorizedpersonnel or properly in-structed persons.AltitudecorrectionfactorSite altitude in m above sea levelInsulating capacity• The insulating capacity is veri-fied by testing the switchgearwith rated values of short-duration power-frequencywithstand voltage andlightning impulse withstandvolt- age according toIEC 62271-1/ VDE 0671-1(see table “Insulating capacity”).• The rated values are referredto sea level and to normalatmospheric conditions(1013 hPa, 20 °C, 11 g/m3humidity in accordance withIEC 60071 and VDE 0111).• The insulating capacitydecreases with increasingaltitude.For site altitudes above1000 m (above sea level)the standards do not provideany guidelines for the insula-tion rating. Instead, specialregulations apply to thesealtitudes.• Site altitude– As the altitude increases, theinsulating capacity of insula-tion in air decreases due tothe decreasing air density.This reduction is permittedup to a site altitude of 1000 maccording to IEC and VDE.– For site altitudes above1000 m a higher insulationlevel must be selected. Itresults from the multipli-cation of the rated insulationlevel for 0 to 1000 m with thealtitude correction factor Ka.Result:According to the abovetable, a switchgear for arated voltage of 24 kV witha rated lightning impulsewithstand voltage of 125 kVis to be selected.Table – Insulating capacityRated voltage (rms value) kV 7.2 12 15 17.5 24Rated short-duration power-frequency withstand voltage (rms value)– Across isolating distances kV 23 32 39 45 60– Between phases and to earth kV 20 28 35 38 50Rated lightning impulse withstand voltage (peak value)– Across isolating distances kV 70 85 105 110 145– Between phases and to earth kV 60 75 95 95 125Standards, specifications, guidelinesStandardsSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 201212Terms“Make-proof earthing switches”are earthing switches withshort-circuit making capacityaccording to– IEC 62 271-102 and– VDE 0671-102/EN 62 271-102Internal arc classification• Safety of operating personnelensured by tests to verify in-ternal arc classification.• Internal arc tests in accord-ance with IEC 62 271-200/VDE 0671-200, Annex A.• The switchgear complies withcriteria 1 to 5 specified in thementioned standards for thebasic version up to 25 kA.• Definitions of the criteria:– Acceptance criterion 1Covers and doors remainclosed. Limited deformationsare accepted.– Acceptance criterion 2No fragmentation of theenclosures. No projection ofsmall parts above 60 gweight.– Acceptance criterion 3No holes in the accessiblesides up to a heigth of 2 m.– Acceptance criterion 4Indicators do not ignite dueto the effect of hot gases.– Acceptance criterion 5The enclosure remainsconnected to its earthingparts.Current-carrying capacity• According to IEC 60 694/VDE 0670-1000 andIEC 62 271-200/VDE 0671-200 current-carrying capacities refer tothe following ambienttemperatures:– Maximum of24-hour mean + 35 °C– Maximum + 40 °C• The current-carrying capacityof the panels and busbarsdepends on the ambienttemperature outside theenclosure.• To attain the maximum ratednormal currents, the panelsare provided with natural orforced ventilation.Climate and ambientconditionsThe switchgear may be used,subject to possible additionalmeasures, under the followingambient conditions and climateclasses:Ambient conditions– Natural foreign materials– Chemically active pollutants– Small animalsClimate classes– 3K3– 3K5The climate classes areclassified according toIEC 60 721-3-3.Protection against solidforeign bodies, electric shockand ingress of water8BT1 switchgear fulfills acc. tothe standards– IEC 62 271-200/VDE 0671-200– IEC 60 529/VDE 0470-1the following degrees ofprotection:– Enclosure: IP 4X– Compartments: IP 2XStandardsStandards, specifications, guidelinesSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 2012 13NotesSwitchgear Type 8BT1, up to 24 kV, Air-Insulated · Siemens HA 26.31 · 201214NotesPublished by and copyright © 2012:Siemens AGWittelsbacherplatz 280333 Munich, GermanySiemens AGInfrastructure & Cities SectorLow and Medium Voltage DivisionMedium VoltagePostfach 324091050 Erlangen, Germanywww.siemens.com/medium-voltage-switchgearAll rights reserved.If not stated otherwise on the individual pages of this catalog, we reserve the right to include modifications, especially regarding the stated values, dimensions and weights.Drawings are not binding.All product designations used are trademarks or product names of Siemens AG or other suppliers.If not stated otherwise, all dimensions in this catalog are given in mm.Subject to change without prior notice.The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.For more information, please contact ourCustomer Support Center.Phone: +49 180 524 70 00Fax: +49 180 524 24 71(Charges depending on provider)E-Mail: support.ic@siemens.comOrder No. E50001-K1426-A301-A3-7600Printed in GermanyDispo 30400KG 04.12 1.0 16 En7400 / 42069 WÜPrinted on elementary chlorine-free bleached paper.