Post on 18-Mar-2020
— D IS TR I BUTI ON SOLUTI ONS
UniSecInstallation manual
IndexSafety 2Introduction 31. Productinformation 4 1.1 Unitdimensions 4 1.2 Weights 72. Transportandstorage 8
2.1 Conditionondelivery 8
2.2 Unpackingatinstallationsite 8 2.3 Handlingtheunitsasfar astheinstallationsite 9 2.4 Temporarystorage 11 2.5 Deliveryresponsibilities 123. Assemblyoftheswitchgearonsite 13 3.1 Generalwarningsandcautions 13 3.2 Preparations 13 3.3 Dimensionalfoundationdrawings 13 3.4 Foundations 23 3.5 Installationprocedureforunits 23 3.6 Gasventducts 34 3.7 Couplingtopanelswithwithdrawable
circuit-breakerandswitch-disconnector (GSec) 38
4. Cableconnections 39 4.1 Installingthecables 39 4.2 Controlcables 45 4.3 Earthingtheswitchgear 45 4.4 Finalinstallationwork 46A. Tighteningtorquesforsteelscrewsand
nuts/bolts 47
B. Toolsrequiredforinstallation 51
2 U N I S EC I NS TA L L ATI O N M A N UA L
— Safety
For your safety! • Strictlyfollowthismanual.• Onlyinstallswitchgearinindoorconditionssuitableforelectricalequipment.
• Ensurethatinstallation,operationandmaintenanceisonlycarriedoutbyprofessionalelectricians.
• Complyfullywiththestandardsinforce(IECorlocal),theconnectionconditionsofthelocalpowerutilityandtheapplicablesafetyatworkregulations.
• Observetherelevantinformationinthemanualforallactionsinvolvingtheswitchgear.
• Foruseofthecircuit-breaker,refertotheinstructionbooklet.
Skilled personnelAlltheinstallation,puttingintoservice,runningandmaintenanceoperationsmustbecarriedoutbyskilledpersonnelwithin-depthknowledgeoftheapparatus.Whencarryingoutanymaintenancework,theregulationsinthecountryofinstallationmustbestrictlycompliedwith.Maintenanceworkmustonlybeperformedinaprofessionalwaybytrainedpersonnelfamiliarwiththecharacteristicsoftheswitchgear,inaccordancewithalltherelevantIECsafetyregulationsandthoseofothertechnicalauthorities,alsorespectingotheroverridinginstructions.ItisrecommendedthatABBservicepersonnelbecalledintoperformtheservicingandrepairwork.
Crucial informationPayspecialattentiontotheinformationshowninthemanualbythefollowingsymbol:
Afterthissymboltherearefourdifferentindicationswhichexplainthepossibletypeofinjuriesordamagewhichmaybecausedwhentheinstructions,includingrecommendedsafetyprecautions,arenotfollowed.
• DANGER - identifies the most serious and immediate hazards which can result in serious personal injury or death
• WARNING - identifies hazards or unsafe practices which can result in serious personal injury or death
• CAUTION - identifies hazards or unsafe practices which can result in minor personal injury or product or property damage
• NOTE - identifies important procedures or requirements that, if not followed, can result in product or property damages
WARNINGMake sure that the specified electrical ratings are not exceeded under switchgear operating conditions. Keep the manuals accessible to all personnel involved in installation, operation and maintenance. The user’s personnel are responsible for all matters regarding safety in the workplace and correct use of the switchgear.
WARNING Always follow the instructions in the manual and respect the rules of good engineering practice (GEP)! Hazardous voltages can cause serious injury or death! Disconnect the power and earth live parts before proceeding with any work on the apparatus. Follow the safety regulations in force in the place of installation.
Contact us!Ifyouhaveanyfurtherquestionsaboutthismanual,ourfieldserviceteamwillbepleasedtohelp.Seethebacksideofthismanualforcontactinformation.
D IS TR I B U TI O N SO LU TI O NS 3
General aspectsUniSecisanair-insulatedswitchgearforindooruse,designedformediumvoltagesecondarydistribution.UniSecswitchgearistheresultofcontinuousinnovation,followingthedesiretomeetever-changingmarketneeds.Thisnewseriesofswitchgearoffersawiderangeoflong-termtechnicalsolutions.Safety,reliability,user-friendlinessandsimplicityofinstallation,aswellenvironmentalsustainabilitywerethedrivingforcesindevelopingthisswitchgear.UniSecisstructuredbyplacingstandardizedunitssidebysideinacoordinatedway.Constructionandtestingarecarriedoutinthefactory.
Installation manual ThismanualprovidesinformationoninstallationofUniSecunits.Itcontainsdetailsaboutproductdimensionsandweights,aswellasinstructionsforunpackinganddeliverytotheinstallationsite.Step-by-stepinstructionsshowtheprocedureforinstallingtheswitchgear.
— Introduction
1070 110(*)
1700
/200
0
110(*)1070150
1700
/200
0
U N I S EC I NS TA L L ATI O N M A N UA L4
— 1.Productinformation
Code Description Width
190 mm 375 mm 500 mm 600 mm 750 mm
SDC Unitwithswitch-disconnector • • •SDS Unitwithswitch-disconnector–disconnection • • •SDD Unitwithdoubleswitch-disconnector •SDM Disconnectingunitwithmeasurementswithswitch-
disconnector •UMP Universalmeasurementunit •DRC Directincomingunitwithmeasurementsandbusbarearthing • •DRS Riserunit–measurements • •SFV Switch-disconnectorwithfuse–measurements •SFC Switch-disconnectorunitwithfuses • • •SFS Switch-disconnectorwithfuses–disconnection • •SBC Circuit-breakerunitwithswitch-disconnector •SBC-W Withdrawablecircuit-breakerunitwithswitch-disconnector •SBS Circuit-breakerunitwithswitch-disconnector–disconnection •SBS-W Withdrawablecircuit-breakerunitwithswitch-disconnector–
disconnection •SBM Disconnectionunitwithmeasurementswithcircuit-breakerand
doubledisconnector •SBR Invertedcircuit-breakerunit •HBC Unitwithintegratedcircuit-breakerandswitch-disconnector •RLC/RRC Rightandleftsidecableriser(forSBRunitsonly) •WBC Unitwithwithdrawablecircuit-breaker •(*) •(**)
WBS Unitwithwithdrawablecircuit-breaker–disconnection •(*) •(**)
BME Busbarearthingandmeasurementunit •(*)
(*) 12-17,5kV(**) 24kV
1.1 Unit dimensions
Side view of the different LSC2A units
(*) Forpanelswithremovablecircuit-breakers
Figure 1. Side view of IAC A-FL 12.5 kA 1s (solution installed completely against a wall)
Figure 2. Side view IAC A-F 16 kA 1s (solution completely against the wall)
120 1200/1300
20
00
1070 110(*)120
20
20/
2320
17
00/
2000
110(*)1070100
1700
/200
0
110(*)70 1070
1700
/200
0
D IS TR I B U TI O N SO LU TI O NS 5
Side view of the different LSC2A units
Side view of the different LSC2B units
(*) Forpanelswithremovablecircuit-breakers
Figure 5. Side view IAC A-FLR 21 kA, with duct
Figure 3. Side view IAC A-FL 12.5 kA, with filters
Figure 6. Side view for panels with withdrawable circuit-breakers, IAC A-FLR 25 kA, 1 sec up to 17.5 kV and IAC A-FLR 16 kA, 1s at 24 kV with filters
Figure 4. Side view IAC A-FLR 16 kA, with filters
WBCWBSDRSforWBS
100 1200/1300
20
002
34
0
70 1200/1300
20
00
1200/1300
20
00
110(*)1070120
1700
/200
0
U N I S EC I NS TA L L ATI O N M A N UA L6
— 1.Productinformation
Side view of the different LSC2B units
Side view
(*) Forpanelswithremovablecircuit-breakers
Figure 9. Side view for panels with withdrawable circuit-breaker IAC A-FL 12.5 kA 1s (solution installed completely against a wall)
Figure 7. Side view for panels with withdrawable circuit-breakers, IAC A-FLR 25 kA, 1 sec up to 17.5 kV and IAC A-FLR 21 kA, 1s at 24 kV with duct
Figure 10. Side view of IAC AFLR 21kA x 1s - Downward
Figure 8. Side view for panels with withdrawable circuit-breaker IAC A-FL 12.5 kA 1s with filters
WBCWBSDRSforWBS
D IS TR I B U TI O N SO LU TI O NS 7
1.2 WeightsThefollowingtableshowsthemaximumweightsofthedifferentunits. Weightsareindicative,withoutCTs,VTsandfuses.
ForfurtherinformationpleasecontactABB.
Unit Panel width Panel width
1700 mm 2000 mmmm Kg Kg
SDC 375 150(1) 160(1)
500 170(1) 180(1)
750 195(2) 210(2)
SDS 375 155(2) 165(2)
500 175(2) 185(2)
750 200(2) 215(2)
SDM 750 230(2) 250(2)
SDD 750 270(2) 290(2)
UMP 750 200(2) -
SFC 375 155(3) 160(3)
500 175(3) 185(3)
750 200(3) 215(3)
SFS 375 165(3) 175(3)
500 180(3) 190(3)
SBC 750 355(2) 355(2)
SBC-W 750 355(2) 355(2)
SBS 750 355(2) 375(2)
SBS-W 750 355(2) 375(2)
SBM 750 390(2) 410(2)
SBR 750 335(2) -
HBC 500 250(2) 275(2)
SFV 500 175(2) 185(2)
DRC 375 120(2) 130(2)
500 135(2) 145(2)
DRS 500 - -
WBC 600 - 600(1)
750 - 750(1)
WBS 600 - 600(1)
750 - 750(1)
BME 600 - 450(1)
(1) WithoutCT(2) WithoutCTorVT(3) Withoutfuses
Table 1. Maximum weights of units
U N I S EC I NS TA L L ATI O N M A N UA L8
— 2.Transportandstorage
2.1 Condition on deliveryDelivery packingUniSecisdeliveredeitherasasingleunitorinmultipleswitchgearunitswithalengthofnomorethan2.0m,andwiththedoorsclosed.Thesizeofthepack(s)dependsonthenumberandtypeofunitsandhastobedefinedseparatelyineachcase.Thefactory-assembledunitshavebeeninspectedbythemanufacturerinthefactoryforcompletenessintermsoftheorderand,atthesametime,subjectedtoroutinetestingaccordingtoIECpublication62271-200inordertoverifycorrectconstructionandfunctions.Thebranchbusbarsarefactory-assembledforeachunit.However,themainbusbarconnectionsbetweendifferentunitsmustbecarriedoutonsite.Themainbusbarsandtheiraccessoriesarepackedseparatelyfordelivery.
2.2 Unpacking at installation siteStorage and inspectionTheUniSecswitchgearmustonlybeinstalledindoors.Itisthereforeimportanttostoretheswitchgearunitsintheirtransportpackingforaslongaspossible.Donotstoreswitchgearunitsoutside.Thepacksshouldonlybeopenedtoinspectforanydamagecausedduringtransport.Afterinspection,thepackingshouldberestoredtoitsoriginalcondition.
NOTE Any transport damage must be reported to the carrier/forwarder immediately. If installation of the switchgear is to be made immediately after delivery, the transport packing must be removed, except for the plastic vapour corrosion inhibitor film covering the units, which must only be removed at the final switchgear installation site
UnpackingTheUniSecunitsarefixedtothepalletusingseparatefixingplates(2platesonthebackoftheunit)andbolts(2boltsonthefrontoftheunit)insidetheunit.
a)Removetheplasticfilmfromtheunits.b)Takeoffanddisposeofthefixingplatesand
boltsasthesewillnotbeneeded.c) Thetableshowsalistofthepackingmaterials
usedfortheswitchgearunitsandtheirpossiblerecyclingmethods.Packingmaterialsmayvaryfromcasetocase.Thelistgivesanindicationofthepossiblepackingmaterials.
Packing materialsTable2.listsallthepackingmaterialsusedintheswitchgear:
Raw material Possible recycling method
Plywood Recyclingordisposal
Unplanedwoodproducts Recyclingordisposal
Antistaticpolythenefilm Recyclingordisposal
Polytheneshrinkwrap Recyclingordisposal
VCI(vapourcorrosioninhibitor)film
Recyclingordisposal
Tape Recyclingordisposal
Foldedcardboardandpolystyrenereinforcements
Recyclingordisposal
Cornerprotections Recyclingordisposal
Table 2. Packing materials
Figure 11. Fixing plates outside the 375-500 mm unit
D IS TR I B U TI O N SO LU TI O NS 9
Figure 13. Bolt inside the unit (left side)
Figure 14. Bolt inside the unit (right side)
Figure 15.
Figure 12. Fixing plates outside the 750 mm unit
2.3 Handling the units as far as the installation site2.3.1 General warnings and cautions
DANGER Only carry out loading operations when it has been ensured that all precautionary measures to protect personnel and materials have been taken
CAUTION The switchgear units should usually be handled in an upright position. Take the high centre of gravity into account. Tilting or overturning must be avoided. If necessary, single units can be carried horizontally, for example, because of a low doorway. In such cases, the unit must be supported over a wide area
2.3.2 InstructionsTransport unitsThetransportunitsconsistofindividualunitsorsmallgroupsofunits.TheliftinghooksaresuitableforallUniSecunits(375mm,500mm,600mmand750mm).
Handling instructionsTheunitsmustbehandledintheuprightpositionusingamanualforkliftoraforklifttruckor,exceptionally,usingspecialrollingtubes(atleastfour).
CAUTION Thepackagesshouldbeplacedonalevelsurface.
Lifting instructionsUsethefollowingtoolsforlifting:• Crane• Fork-lifttruckand/or.
U N I S EC I NS TA L L ATI O N M A N UA L10
Operations to be carried out before lifting a) Installtheliftinghooksontheroofframe.
b)Repeattheoperationforallfourcornersoftheroofframe.
Switchgear ready for lifting: lifting hooks installed
Lifting dimensions and angleWhenliftingusingacrane,proceedasfollows:a)Fitliftingropesofanappropriateloadcapacity
withspringcatches.b)Keepanangleofatleast60°betweenthe
horizontalplaneandtheropesleadingtothecranehook.
Ifacraneisavailable,liftingcanbedonebyusingtheliftinghookswhicharedeliveredseparately.Theliftingprocedure,includinghowtoinstalltheliftinghooks,isillustratedontheright.
NOTE It is also possible to move units on a flat floor to the installation site by using rolling tubes. The rolling tube dimensions should be about 1 m in length and 20-25 mm in diameter
2.3.3 Lifting procedureParts
Figure 16.
Figure 19. Roof frame + lifting hooks
Figure 20. Lifting hooks installed on roof frame
Figure 17. Lifting hook
Figure 18. Roof frame on the top of the unit
Figure 21. 375 mm, 500 mm and 600 mm UniSec units
Figure 22. 750 mm UniSec unit
— 2.Transportandstorage
D IS TR I B U TI O N SO LU TI O NS 11
Figure 23. Dimensions and angles
Figure 24. Lifting
CAUTION Fourliftingropesofsufficientlengthmustbeusedwhenliftingseveralunitsorawholeswitchgear(4unitsatthemost,oramaximumlengthof2m).
Lifting by crane
Operations after lifting a)Dismantletheliftinghooks.b)Thesamehooksareusedagainforthenextunit.
2.4 Temporary storage2.4.1 General warnings and cautions
CAUTION The packing must be kept indoors immediately after arrival. The conditions must meet the environmental requirements of the IEC 60721-3-1 Standard, classification 1K3
CAUTION The vapour corrosion inhibitors placed in the units for protection against humidity during temporary storage and transport must not be removed until installation is completed
CAUTION The duration of the protective effect of the packing is limited to a few months when stored indoors in a dry place. ABB should be consulted in the case of longer storage periods or if the storage conditions differ from those indicated
2.4.2 Optimum storage conditionsDefinition: Optimumtemporarystorage,withoutnegativeconsequences,dependsoncompliancewiththeminimumrequirementsfortheunitsandpackingmaterials.
Minimumairtemperature °C -5(*)
Maximumairtemperature °C +40
Minimumrelativehumidity % 5
Maximumrelativehumidity % 95
Rateoftemperaturechange °C/min 0,5
(*) Forservicetemperature-25°Candstoragetemperature-40°C,pleaseaskABB
Table 3. Climatic conditions according to IEC 60721-3-1, classification 1K3
U N I S EC I NS TA L L ATI O N M A N UA L12
2.5 Delivery responsibilitiesResponsibilities Theresponsibilitiesoftheconsigneewhentheswitchgeararrivesonsiteinclude,butarenotlimitedto,thefollowing:
• Checkingtheconsignmentforcompletenessandlackofanydamage(e.g.forsignsofhumidityanditsdetrimentaleffects).Incaseofdoubt,thepackingmustbeopenedandthenproperlyresealed
NOTE Always take photographs to document any major damage
• Thepackinglistincludesanyseparateadditionalmaterial(notinstalled).Thismaterialcanoftenbefoundinthefirstunitoftheswitchgear
Ifanyquantitiesareshort,ordefectsortransportdamagearenoted,thesemustbe:• Documentedontherespectiveshipping
document• Immediatelynotifiedtotherelevantcarrieror
forwardingagentinaccordancewiththerelativeliabilityregulations
Type of packingSpecialinstructionsdependingonthetypeofpackingaregivenbelow:
1. Units with basic packing or without packing1) Useadry,well-ventilatedplacewithclimatic
conditionsinaccordancewithTable3.2)Storetheunitsupright.3)Donotstackunits.4)Unitswithbasicpacking:
• Openthepacking,atleastpartially5)Unitswithoutpacking:
• Coverwithnon-adherentprotectivesheeting• Ensurethereissufficientaircirculation• Regularlycheckforanycondensationuntil
installationisstarted
2. Units with seaworthy or similar packing with internal protective sheeting
1)Storethetransportunits:•protectedfromtheweather•inadryplace•safefromanydamage
2)Checkthepackingforanydamage
D IS TR I B U TI O N SO LU TI O NS 13
— 3.Assemblyoftheswitchgearonsite
3.1 General warnings and cautions
WARNING Once the documents have been prepared for final mounting, the binding data supplied by ABB must always be taken into account!
WARNING In order to obtain an optimal installation sequence and ensure high-quality standards, on-site installation of the switchgear must only be carried out by specially trained and skilled personnel, or at least by personnel supervised and monitored by competent and responsible people
NOTE Where switchgear units have roof-mounted gas vent ducts or large auxiliary circuit compartments, it must be ensured that the ceiling height is sufficient for these
ATTENTION The access to the Swg Room while Swb is in service is permitted to authorized personnel only who has specific expertise on electrical safety according to CEI 11-27 or IEC/EN 50110
3.2 PreparationsBefore startingTocommenceinstallationonsite,theswitchgearroommustbeabsolutelysuitable,i.e.providedwithlightingandelectricity,fittedwithapadlock,ventilationfacilitiesandmustalsobedry.Allthenecessarypreparations,suchaswallopenings,ducts,etc.forlayingthepowerandcontrolcablesasfarastheswitchgear,mustalreadyhavebeencompleted.Beforeproceedingwithinstallation:a)Cleantheinstallationsiteb)Visiblytracetheperimeterofalltheunitsmaking
uptheswitchgearontheslab,takingtheminimumclearancesofwallandanyobstaclesinto account
3.3 Dimensional foundation drawings
3.3.1 Room layout
NOTE When gas vents or absorbers are foreseen, there must be a minimum space of 185 mm between the back of the switchgear and the installation room wall
1070
1700
/200
0
1000 min (*)
400
min
2100
/240
0m
in
150
30m
in
1000
min
2100
/240
0m
in
1700
/200
0
1070 1000 min (*)
400
min
30m
in
200
U N I S EC I NS TA L L ATI O N M A N UA L14
(*) 1300mmatleastforpanelswithcircuit-breaker
Installation room
Theinstallationroommustbepreparedtosuitthesizeandversionoftheswitchgear.Compliancewiththedistancesindicatedwillensurethattheequipmentfunctionscorrectlyandsafely.ConsultABBiftheinstallationconditionsdifferfromthoseindicated.
Room layout
IAC A-FL 12.5 kA, 1sec against a wall IAC A-F 16 kA
Figure 25. Distances from the walls of the installation room with compartment for the exhaust gas on the rear, solution IAC A-FL 12.5 kA, 1s against the wall
Figure 26. Distance from walls of installation room with gas exhausting compartment at rear, solution IAC A-F 16 kA 1s
ATTENTION IAC A-FL version – No access to Rear side of the Swb while is in service. Installation distances to be respected
ATTENTION IAC A-FL version – Do not access the rear or side parts of the switchgear while this is under service conditions. Compliance with the installation distances is mandatory
— 3.Assemblyoftheswitchgearonsite
2100
/240
0m
in
1700
/200
0
1070 1000 min (*)
400
min
30m
in
200 min
2100
/240
0m
in
1700
/200
0
1070 1000 min (*)
400
min
30m
in
200 min
D IS TR I B U TI O N SO LU TI O NS 15
(*) 1300mmatleastforpanelswithcircuit-breaker
Figure 27. Minimum distances from the walls of the installation room, solution IAC A-FL 12.5 kA 1s with filters installed on each individual unit
Figure 28. Minimum distances from the walls of the installation room, solution IAC A-FLR 16 kA 1s with filters installed on each unit
ATTENTION IAC A-FL version – Do not access the rear part of the switchgear while this is under service conditions. Compliance with the installation distances is mandatory
ATTENTION IAC A-FLR version – No access limitations to the Swg Room. Installation distances to be respected
Room layout
IAC A-FL 12.5 kA filters IAC A-FLR 16 kA against a wall
2100
/240
0m
in
1070 1000 min (*)
400
min
1700
/200
0
200 min (1)
30m
in
2600
min
2000
1070 1000 min (*)
600
min
35m
in
200 min (1)
U N I S EC I NS TA L L ATI O N M A N UA L16
Room layout
IAC A-FLR 21 kA filters IAC A-FLR 21 and 25 kA(2) gas exhaust duct(2)
(*) 1300mmatleast,forpanelswithcircuit-breaker(1) ForspecialconditionsdefinedbyABB,theminimumdistancecanbeupto130mm(2)Onlyfor12kVLSC2Aunits,height2000mmandwidth750mm(exceptforunitsSBC-W,SBS-W,SDD,UMPandSBR)
Figure 29. Minimum distances from the walls of the installation room, solution IAC A-FLR 21 kA 1s with filters installed on each unit
Figure 30. Minimum distances from the walls of the installation room, solution IAC A-FLR 21/25(2) kA 1s with gas exhaust ducts
ATTENTION IAC A-FLR version – No access limitations to the Swg Room. Installation distances to be respected
— 3.Assemblyoftheswitchgearonsite
30m
in
1200 min1200/1300
2600
min
600
min
2000
200 min (1)
2100
/240
0m
in1070 1000 min (*)
400
min
1700
/200
0
30m
in
200 min (1)
2100
/240
0m
in
1070 1000 min (*)
400
min
1700
/200
0
30m
in
200 min (2)
min
. 400
956
1050
155
D IS TR I B U TI O N SO LU TI O NS 17
IACA-FLR21kAdownwardgasexhaust
Room layout
IAC A-FLR 21 kA downward gas exhaust
Room layout for unit with withdrawable
circuit-breaker (LSC2B)
IAC A-FLR 25 kA filters
(*) 1300mmatleast,forpanelswithcircuit-breaker(1) ForspecialconditionsdefinedbyABB,theminimumdistancecanbeupto130mm(2)Onlyfor12kVLSC2Aunits,height2000mmandwidth750mm(exceptforunitsSBC-W,SBS-W,SDD,UMPandSBR)
Only for 12 kV LSC2A units, height 2000 mm and width 750 mm (except for units SBC-W, SBS-W, SDD, UMP and SBR)
Figure 32. Minimum distances from the walls of the installation room, solution IAC A-FLR 25 kA, 1s @ 12-17.5 and 16 kA, 1s @ 24 kV with filters installed on each unit
30m
in
1200 min1200/1300
2600
min
600
min
2000
200 min (1)
2000
200 min (2) 1200/1300 1200 min
400
min
2400
min
30m
in
U N I S EC I NS TA L L ATI O N M A N UA L18
Room layout for unit with withdrawable
circuit-breaker (LSC2B)
IAC A-FLR 25 kA gas exhaust duct IAC A-FL 12.5 kA filters
(1)ForspecialconditionsdefinedbyABB,theinimumdistancecanbeupto130mm(2)Inthecaseofspecialconditions,contactABBfortheminimumdistancesrequired
Figure 33. Minimum distances from the walls of the installation room, solution IAC A-FLR 25 kA, 1s @ 12-17.5 and 21 kA, 1s @ 24 kV with gas exhaust ducts
Figure 34. Minimum distances from walls of installation room, solution IAC A-FL 12.5 kA 1s with filters installed on each individual unit
— 3.Assemblyoftheswitchgearonsite
10
37
43,5
375
77,5 220
20
26
92
43,5
Ø12,5
15
8,5
80
0
10
37
43,5
500
97,5 230
Ø12,5
15
8,5
80
0
20
26
92
43,5
10
37
43,5
750
265 220
Ø12,5
15
8,5
80
0
20
7,5
69
2
43,5
10
37
43,5
500
140 220
Ø12,5
15
8,5
80
0
20
26
92
43,5
D IS TR I B U TI O N SO LU TI O NS 19
3.3.2 Cable passage hole dimensions and fixing points
Thefollowingfiguresshowthelocationsandsizesofthecablepassageholesunderthedifferentunits.Theseholesmustbemadebeforeinstallationoftheswitchgear.Thefiguresalsoshowtheswitchgearfixingpoints.Thereisonefixingpointineachcorneroftheunit(4perunit).Unitswithoutcableentryhavedimensionsandfixingpointsaccordingtothewidthoftheunit10mmanchoringboltscanbeusedforfixing.
—
375 mm wide units
—
Width 500 mm for DRC unit
—
500 mm wide units—
Width 750 mm for SBR unit
12,5
3312
67
43,5 43,5
220
268,
58 65
0
284
00
500
1300
10
37
150
25 100
Ø12,5
15
8,5
20
7,5
69
2
10
37
43,5
750
327 230
Ø12,5
15
8,5
80
0
20
26
92
43,5
12
00
/13
00
500
Ø12,5
30
1.5
80
0
43,5 43,5
30
1.5 81
10
12
5
Ø12,5
43.5
75
32
30
80
0
25
12
00
600
400 100
43.5
301
.5 81
10
125
Ø12.5
43.5
77
32
30
800
25
13
00
550 100
750
43.5
U N I S EC I NS TA L L ATI O N M A N UA L20
—
DRC/W units—
190 mm width for RLC/RRC units —
750 mm wide units
—
DRS for WBC/WBS/BME—
With 600 mm for units with withdrawable circuit-breakers up to 17.5 kV WBC WBS and BME (without cable outlet)
—
With 750 mm for units with withdrawable circuit-breakers up to 24 kV WBC WBS (without cable outlet)
— 3.Assemblyoftheswitchgearonsite
D IS TR I B U TI O N SO LU TI O NS 21
—Medium voltage cable lengths and locations
Details
190 mm width 375 mm width 500 mm width 600 mm width 750 mm width
A (mm) B (mm) A (mm) B (mm) A (mm) B (mm) A (mm) B (mm) A (mm) B (mm)
SDC Basic – – 920 210 920 275 – – – –
WithCT – – – – 530 275 – – 530 265
SDM Basic – – – – – – – – 525(1) 275(1)
SDD Basic – – – – – – – – 920 210
SFC 292mmfuse – – 600 200 600 240 – – 570 400
442mmfuse – – 450 200 450 240 – – 570 400
SBC/ SBC-W
Basic – – – – – – – – 610 355
WithCT – – – – – – – – 500 340
DRC Basic – – 870 180 670 240 – – – –
WithCT – – – – 530 275 – – – –
SBR Basic – – – – – – – – 400 390
UMP WithCT – – – – – – – – 550 270
HBC Basic – – – – 608 275 – – – –
WithCT – – – – 460 325 – – – –
WithsensorKevcr
– – – – 583/450(3) 275 – – – –
RLC/RRCH1700 Basic 1520 265 – – – – – – – –
With SBR 1495 310 – – – – – – – –
WithHBC 1435 280 – – – – – – – –
RLC/RRCH2000 Basic 1645 305 – – – – – – – –
WBC/BME BaseplateorwithCT
– – – – – – 600 150(2) 600 165(2)
(1)Withoptionalcableterminal(2)Distancebetweensidewallofpanelandfirstconnectioncable(3)Centralphase(L2)
RLCunit
3.3.3 Medium voltage cable locations and lengths
Themediumvoltagecablelengths(distanceofthecableconnectionpointfromthefloor)dependontheunitsandaccessoriesused.
Thefollowingfiguresandtableshowthecablelengthsandlocationsforthedifferentunits.
U N I S EC I NS TA L L ATI O N M A N UA L22
LSC2B units
—Lunghezze e posizioni dei cavi di media tensione
Details
600 mm width 750 mm width
A (mm) B (mm) C (mm) A (mm) B (mm) C (mm)
WBC/BME BaseplateorwithCT 600 150(1) 332 600 165(1) 367
(1)Distancebetweensidewallofpanelandfirstconnectioncable
LSC2Bunit(front) LSC2Bunit(side)
— 3.Assemblyoftheswitchgearonsite
D IS TR I B U TI O N SO LU TI O NS 23
3.5.2.2 Top plate removal from BIG compartmentsTheplateisremovedinthefollowingway:a)Unscrewthescrewfromthesupport.
b)Unscrewthescrewsfrombothendsofthetop.
3.4 Foundations
3.4.1 Foundation types
General aspectsTheswitchgearmustbeerectedonafoundationthatfulfilstherequirementofa2mmmaximumhorizontalheightdeviationinrelationtothelengthanddiagonaloftheswitchgear.Thesecalculationsmustbemadebytechnicallyqualifiedpersonnel.
3.5 Installation procedure for units
3.5.1 Assembly of the first two switchgear units
WARNING Before positioning the different switchgear units, check the floor levelling, with particular attention to the longitudinal flatness (maximum levelness 2/1000)
NOTE If horizontal gas vent ducts are provided, mount the joint brackets unit by unit right from the start (see 4.6.2)
3.5.2.1 Removing roof plates
Platedismantlingiscarriedoutasfollows:a)Unscrewthescrewspresentatbothendsofthe
roof.b)Removetheplate.
Figure 38. 375 mm wide units
Figure 39. 500 mm wide units
Figure 40.
Figure 41.
U N I S EC I NS TA L L ATI O N M A N UA L24
c) Liftandremovetheplate.
3.5.3 Connecting the units
NOTE Do not remove the roof frame in the case of units with roof applications and SBR units
Installationforeseesthefollowingoperations:a)Aligntwounitssidebyside.Beforepushingthe
twounitscompletelytogether,makesurethatthelowerjoiningplateoftheright-handunitisintheupperposition.
b)Screwthejoiningplateandtheunitplatestogether(with6TorxM6x12screws)sothattheyarefullytightened.Insertabolt(M8x20round-headedwithsquareneck)withanut(M8hexagonalnutwithflange)(figure45)totightentheunitsandthejoiningplate.
— 3.Assemblyoftheswitchgearonsite
Figure 42.
Figure 44. Two units side by side
Figure 43.
Figure 45. Screws for the top joining plate
Figure 46. Plates installed
c)Insert5bolts(M10x20hexagonalwithflange)and5nuts(M10x20hexagonalwithflange)intotheLVandinstrumentcompartment(front,upperpartoftheunits),butdonottightenthemyet.
D IS TR I B U TI O N SO LU TI O NS 25
NOTE Do not remove ceiling frame in the case of functional units with roof applications and SBR units
f)ForWBCandWBSunits,insert6hexagonalboltswiththerelativenuts.
3.5.4 Assembling the remaining switchgear unitsAfterconnectingtwounits,bringthethirdunittotheplaceofinstallation.Thenrepeatthefollowingoperations:a)Removingtheroofplatesb)Connectingtheunitsc) Repeatthesameoperationsfortheremaining
units.
3.5.5 Switchgear fastening to the floor
Floor preparationThepanelsmustbepositionedonastandardreinforcedconcretefloor.Ifnecessary,thefloormustbepreparedwithracewaysforroutingthepowercables.Thepreparationtasksarethesameforalltypesofpanels(400-630A).Toreducethedepthoftheracewaysfor400-630Apanelsto350mm(orevendoawaywiththemincertaincases),thecubiclescanbeinstalledonaraisedbasemadeofreinforcedconcrete,whichmustbepreparedatthesametimeastheconstructionworksofthebuildinginquestion.
d)Insert8bolts(M10x20hexagonalwithflange)and8nuts(M10x20hexagonalwithflange)intothecablecompartment(front,lowerpartoftheunits),butdonottightenthemyet.
e)Useascrewdrivertotrimtheunitalignment.Tightenalltheboltsfromthefront.
Figure 47. Places for screws
Figure 49. Screw positions for WBC – WBS units
Figure 48. Screw positions
U N I S EC I NS TA L L ATI O N M A N UA L26
Raised panel position1) Theraisedpositioncanbeusedwhencable
racewayscannotbecreated.2) Thisdoesnotobstructtheactivitiesofthe
substation.
Surface flatness of the base 1) Passa2-meterleveloverthesurfaceofthebase
inalldirectionstocheckforflatnessandevenness.Themaximumdeflectionis5mm.
2) Topreventthebasefrombeingdamagedbyequipmentonwheels(e.g.:circuit-breakers),thesurfacemustpossess 33MPastrengthormore.
How to fasten the cubiclesThecubiclesmustbefastenedtogetherwiththesuppliedboltsandscrews.
3.5.6 Connecting the main busbarsGeneral warnings and precautions
DANGER A warning sign is placed on the top plate to indicate the presence of high voltage under the roof
CAUTION It is recommended to mount the busbars starting from the top of the units
NOTE Tighten to the correct torque. The torques are indicated in the “Tightening torques for steel screws and nuts/bolts” table
NOTE It is important for the screws to be of the correct length
The busbar connections are made through the top openingsa)Cleanandscrapethebusbarconnections.b)Cleantheinsulationofthebusbarsectionswitha
soft,dryclothandcheckforanyinsulationdamage.
c)Installthebusbarsunitbyunit.Insertthescrews,busbarsandotherrequiredcomponentsinthecorrectpositionsandtightenthemtothecorrecttorquesaccordingtotheinstructionsgivenbelow.
Instructions for different types of main busbar connectionsThemainbusbarsoverlapeachotherattheircontactpoints.Thismeansthateveryotherbusbarismountedontopoftheother,asshowninFigure50.Busbarspacersareusedintheendunitstokeepthebusbarsinacompletelyhorizontalposition.
NOTE Metallic terminal-covers are installed in the terminal units for 24 kV
NOTE Make sure the busbar spacers are positioned as shown in the figures below
Busbarspacer
1
Odd numbered
unit
2
Even numbered
unit
3
Odd numbered
unit
4
Even numbered
unit
5
Odd numbered
unit
Busbar Busbarspacer
Figure 50. Main busbar connections
— 3.Assemblyoftheswitchgearonsite
D IS TR I B U TI O N SO LU TI O NS 27
Thefollowingfiguresshowthebusbarconnectionsforunitswithswitch-disconnector.ThecomponentsrequiredareindicatedinTable5.Themainbusbarconnectionsofeachunittypewithdifferentratedcurrentsandvoltagesareshown.EachfiguregivesareferencetothecorrespondingnumbersofthecomponentsinTable5.
All unit types, list of components used
Part Name
1 Springwasher
2 M10x40hexsocketscrew
3 Busbarspacer
4 Fielddiffuser
5 M10x60hexsocketscrew
6 Washer
7 M10nut
8 Washer
9 Insulatingterminalcover
10 SilverwasherD10
11 Busbar
12 ConicalspringwashersD10
13 HexagonalnutM10
14 BusbarspacerD10
All unit types, list of components used
Part Name
15 CompensationwasherD10
16 Round-headedsocketscrewM10x30
17 Round-headedsocketscrew M12x40
18 Round-headedsocketscrewM12x60
19 NutM12
20 ConicalspringwasherD12
21 Round-headedsocketscrewM12x50
22 BusbarspacerD12
23 Round-headedsocketscrewM12x30
24 Round-headedsocketscrewM10x60
25 Round-headedsocketscrewM10x50
26 Round-headedsocketscrewM10x70
27 M10x35button-headedandsquare-neckedbolt
Table5.Listofcomponentsused
11
2 2
3
1 1
2 2
3
3
1
1
1
2 2
1
4
3
4
3
2
2
4
3
3
1 11
3
3
5 55
3
1
3
3
5
U N I S EC I NS TA L L ATI O N M A N UA L28
— 3.Assemblyoftheswitchgearonsite
Units with 12-17.5 kV, 630-800 A switch-disconnector
Units with 24 kV, 630 A switch-disconnector
Units with 12-17.5 kV, 1250 A switch-disconnector
25 25 2525
1 1 11
3
33
8 8 88
1 1 11
7
7
7 77
7
1
1 11
6
1
8
6
3
3
1 11
33
3
6
1
7
1
6
3
2626
8 8 8
1 1
7 7
33
7 77
25
25
25 25
1
1
1 1
4 43
3
2626
D IS TR I B U TI O N SO LU TI O NS 29
DRS/DRC 12-17.5 kV, 1250 A end or isolating units
DRS/DRC end or isolating unitsForDRCandDRSunits,thebusbarsarenotinstalleddirectlyonthetopoftheswitch-disconnectororbushing.
Thereforetotightenthescrewsproperly,thenutsmustbeinstalledunderthebusbars.
DRS/DRC 12-17.5 kV, 630-800 A end or isolating units
DRS/DRC 24 kV, 630 A end or isolating units
12
14
11
15
1213
1111
11
1312
15
11
14
12
16
13
16 16
12
15
12
14
11
12
15
11
14
12
16
13
11
U N I S EC I NS TA L L ATI O N M A N UA L30
For the SBR unit up to 24 kV, 630 A - Units with insulators
Units with current transformers and Combisensors
Busbar exit on the left Busbar exit on the right
Busbar exit on the left Busbar exit on the right
— 3.Assemblyoftheswitchgearonsite
17
17
18
18
20
20
20
20
11
11
11
11
20
20
20
20
19
19
19
19
D IS TR I B U TI O N SO LU TI O NS 31
WBC - WBS, 630 A middle unit
WBC - WBS, 630 A end unit
WBC - WBS, 1250 A middle unit
WBC - WBS, 1250 A end unit
630 A middle unit 1250 A middle unit
630 A end unit 1250 A end unit
23
20
11
12
20
22
11
25
11
1122
11
10
21
25
24
12
1220
10 21
14
21
25
10
20
14
14
14
20
U N I S EC I NS TA L L ATI O N M A N UA L32
Panel for coupling unit with WBC – WBS to unit with 12-17.5 kV, 630 A
switch-disconnector
Panel for coupling unit with WBC – WBS to unit with 12-17.5 kV, 800 A
switch-disconnector
12-17.5 kV, 630 A middle unit 12-17.5 kV, 630 A end unit
12-17.5 kV, 800 A middle unit 12-17.5 kV, 800 A end unit
— 3.Assemblyoftheswitchgearonsite
27
4
8
7
21
21
20
20
19
19
D IS TR I B U TI O N SO LU TI O NS 33
3.5.7 Reinstallazione delle piastre del tetto
L’installazioneprevedeleseguentioperazioni:1) Installarelapiastratetto.2)Rimontarelevitistaccatedurantelaproceduradi
smontaggio.3)Perleunitàterminaliedisezionamento: Installareladoppiapiastradeltetto.
Nonènecessarioavvitarelepiastre(soloperlaversioneIAC21kA1s).
Accertarsicheladoppiapiastradeltettosiaposizionatacomemostralafigura71.
Accertarsicheibordipiegatidelladoppiapiastrascompaianocompletamentealdisottodellapiastra.4) Installareilprofilodigiunzionedeltettoconsei
viti(vitiTorxM6x12).
Connection between SBS and DRC units
Connection to main busbars -
SBS to DRS 12-17.5 kV - 630-800 A
Busbar junction kit - 24 kV, 630 A
Figure 71. Installation of double roof plate
Figure 72. Outline of roof joining
U N I S EC I NS TA L L ATI O N M A N UA L34
c) Screw3additionalscrews(TorxM6x12)inthebottomplateasshowninFigure75.
d)Mountthehorizontalductontotheverticalduct.InsertthescrewsandnutsinitasshowninFigure77(4TorxM6x12screws,supportbarand2M6hexagonalnuts).
3.6 Gas vent ducts3.6.1 Installation of the gas vent ducts
Thegasventductsareusuallyalreadyinstalled.a) Installtheverticalpartofthegasventduct.
b) Insertscrewsintheverticalduct(6TorxM6x20screws)andinthebottomplate(5TorxM6x12screws),andtightenthemasshowninFigure74.
— 3.Assemblyoftheswitchgearonsite
Figure 73. Installation of the vertical gas vent duct
Figure 75. Additional screws for the bottom plate
Figure 74. Screws for the vertical duct and bottom plate
Figure 76. Screws and nuts for the horizontal duct
D IS TR I B U TI O N SO LU TI O NS 35
3.6.2 Connecting the gas vent ducts
a)Installthelowerlockingbracketb) Installtheupperlockingbracketbarandscrewup
thescrews(2hexagonalboltswithflangeM6x10)Figure79showsanadditionalductandendplate.
Connectingthesepartscanbedoneinthesamewayasinthepreviousstages.Anadditionalductisusedintheendunittodirectanygasduetoarcfaultsoutoftheswitchgearroom.Theswitchboardisalwaysprovidedwithanadditionalduct1metrelong.Onrequestanadditionalductwithamaximumlengthof2metrescanbesupplied.Inthecaseof750mmunits:a) Installthelargebottomplateb) Installtheplateinthecentreofthegasvent
ducts.
Example of lateral gas outlet
Figure 77. Installed gas vent duct
Figure 79. Connected gas vent duct; additional duct and end plate
Figure 78. Upper locking bracket
Figure 80. View from front
U N I S EC I NS TA L L ATI O N M A N UA L36
Figure 81. Side view
Figure 82. View from front
Figure 84. Side view
Figure 85. View from above
Figure 83. Side view
Example of raised lateral gas outlet
Example of rear outlet
— 3.Assemblyoftheswitchgearonsite
D IS TR I B U TI O N SO LU TI O NS 37
Figure 86. Side view
Figure 87. View from above
Example of raised rear outlet 3.6.3 Gas exhaust filters 16 kA - Version BE
Rear closing
Rear closing
200
0
200
0
170
0/20
00
600750
500750
LSC2A LSC2ALSC2B
U N I S EC I NS TA L L ATI O N M A N UA L38
— 3.Assemblyoftheswitchgearonsite
ThedifferentdesignofthepanelsWBC/WBS/BMEandthedifferentheightoftheomnibusbusbarsnotalloweddirectcouplingwiththepanelswithswitch-disconnectorand/orremovablecircuitbreakerbothH=1700mmandH=2000mm.Adapterpanelshavebeencreatedforthistypeofcompartmentsoastoallowthebusbarstobeconnected.Theheightoftheadapterpanelis2000mm.Theadapterpanelkeepsallthecharacteristicsofastandardpanelandcanthereforebeusedasanincoming/outgoingunit.
3.7 Coupling to panels with withdrawable circuit-breaker and switch-disconnector (GSec)
Theavailableadapterpanelsare:
UnitWidth(mm)
Weight (*)
(kg)
SDC 500 220
SFC 500 225
SFV 500 225
SBC(1) 750 380
DRC 500 145
(*) Estimatedweight,consideringthebaseunitwith630Abusbars,withoutTA,TVandfuses
(1) CanbecoupledonlyontheleftsideofWBC/WBS/BMEunitswithwithdrawablecircuit-breakers
AnadapterpanelallowingUniSecswitchgeartobecoupledtotheotherABBswitchgear(UniMixandUniSwitch)isavailableonrequest.
Figure 89.
1
3
41
32
5
2
4
D IS TR I B U TI O N SO LU TI O NS 39
Operations1.Dismantlethecableclamps,cableguidesplines,
fairleadsandthefloorsheeta) Unscrewtheeightboltsonthefloorandremove
thebottomplates.
2.Cablesa)Pullthecablesthroughtheopenbottomintothe
unit.Measureandcutthecablestosufficientlength,takingintoconsiderationtheinstallationofthecableterminationsandcableterminals.
b)Adaptthefairleadstothecablediameterandfitthemontothecable.
4.1 Installing the cables
NOTE The position of the medium voltage cables are positioned L1, L2 and L3 front to back
4.1.1 Installing the cablesParts
1.Floorsheet2.Fairleads3.Cableguidespline4.Cableclampingscrew
NOTE The clamping screws are optional
1.Cablecover2.Cableseal3.Cablesupport4.Hexagonalnutswithflange9ADA289M6- steel8A2F5.Cheese-headTorxplusscrew.ScrewM6x12
Fastite200005HQ-BA
— 4.Cableconnections
Figure 91. Medium voltage cable cover
Figure 90. Parts
Figure 92. Dismantling completed
Figure 93. Cables and reducer rings
U N I S EC I NS TA L L ATI O N M A N UA L40
NOTE In the case of a circuit-breaker, fit the floor plates as far apart from each other as possible so that the cables can be fitted directly to as vertical a position as possible
NOTE During mounting of the power cables, check that earth connection passes through the toroid (see figure below)
NOTE Check that P1 contacts of the toroid is mounted on supply side of the plant
4. Cable clampsa)Re-installtheloosepartsasshowninFigure97.b)Tightenall6nuts.
c)Preparethecableinsulatingendsandmountthemonthecablecoresaccordingtothemanufacturer’sinstructions.
d)ConnectthecablestothecableterminalsasshowninFigure94.
Inaswitch-fusecombination,themaximumterminalwidthis30mm.
3.Cableclampsa)Remove2nuts(perphase)fromthelefthandside
ofthecableclamps.b)Removetheloosesidesofthecableclamps.c)Insertthefloorplates,fairleads,cableclampsand
cableguidesplines,togetherwith8nuts,ontheflooroftheunitasshowninFigure95.
d)Screwupalleightnuts.
NOTE With SBC-W, the circuit-breaker can be removed as indicated in the Operation manual
Figure 94. Connecting the cables
Figure 95. Installation of the floor plates, cable guide splines, cable clamps and fairleads
Figure 96.
Figure 97. Installing the loose parts of the cable clamps
— 4.Cableconnections
D IS TR I B U TI O N SO LU TI O NS 41
1)UnscrewatthetopoftheRLCfrontcover,liftitandremovethefrontRLCcover.
2)UnscrewthetopandbackpartoftheRLCsidecover,liftitandremovetheRLCsidecover.
3)Unscrew,liftandremovethetwometalsheets.
NOTE Tighten to the correct torque! See the tightening torques table at the end of the manual!
4.1.2 Installing the cables in the RLC unitRLC unit cable compartmentOpentheRLCcablecompartment.
Figure 98. Cables readyFigure 100. RLC front cover
Figure 101. RLC cover
Figure 99. Cable compartment
U N I S EC I NS TA L L ATI O N M A N UA L42
Connect the MV cables.1)Cutthecableglandsatthebottomofthe
RLCunitaccordingtothecablediameterandfixthecablesinthecentreoftheRLCunittothelockingpart.
4)Unscrew,liftandremovethecableprotectionsheetoftheRLCunit.
— 4.Cableconnections
Figure 103. RLC internal cover
Figure 105. Cable glands on the bottom of the RLC unit
Figure 104. RLC unit cable locking parts
Figure 102. RLC transversal part
A1
B1B
C
D1
D E1 E2
D2
E3
E
C1 C2
A
D IS TR I B U TI O N SO LU TI O NS 43
4.1.3 Installing the WBC unit cablesa) OpencabledoorAbyunscrewingknurledscrews
A1.
b) Ifnecessary,removethelowerfrontcoverbyunscrewingscrewsC1andC2.
c) Ifsupplied,removeplateDofthevoltagetransformers(VT)byunscrewingscrewsD1andD2(dependonthetypeofVT).
d)Ifsupplied,removesurgearresterEbyunscrewingscrewsE1,E2andE3.
2)Connectthecablestothecircuitbusbar.
3)Connectthecableearthingscreenbesidetheplasticlockingdevices.
ClosetheRLCunitcablecompartment.
CarryoutthesameoperationsinreverseordertoopentheRLCunitcablecompartment.
Figure 108. RLC unit earthing cable terminals
Figure 107. RLC unit cable terminal connections
Figure 106. Exploded drawing of the cable locking parts on the bottom of the RLC unit
Figure 109.
(on both sides)
Figure 110.
Figure 111.
H1
H
A
B
C
D E H
G
F
U N I S EC I NS TA L L ATI O N M A N UA L44
— 4.Cableconnections
e) ConnecttheMVcablesHusingtheH1bolts.
NOTE If there is more space, the circuit-breaker compartment plate can be dismantled
f) Re-assemblyofallcomponents.
Figure 112.
Figure 113.
Cable connections
Panels Width Maximum quantity of cables per phase
Max cross section of cables (mm2)
LSC2A SDC 375 1(*) 400
500 1 630
2 300
750 1 400
2 300
SFC 375 1 95
500 1 95
750 1 95
SBC/SBC-W
750 1 630
2 300
HBC 500 1 630
2 300
DRC 375 1(*) 400
500 1 630
2 300
UMP 750 1 400
2 300
RLC/RRC 190 1 400
LSC2B WBC/BME 600 1 630
2 400
4 300
750 2 400
4 240
(*)2(two)300mm2cables@12Kv
Table 7. Cable connections
D IS TR I B U TI O N SO LU TI O NS 45
4.3 Earthing the switchgearEachunitisfittedwithearthingbusbarsthatrunlongitudinallyinthelowerfrontpartoftheunit.Thesebusbarsmustbeconnectedtogetherasshowninchapter5.3.1.Thestationearthingsystemmustbeconnectedtotheendunitoftheswitchgear.Iftheswitchgearconsistsofmorethan8units,itisadvisabletoconnectthestationearthingsystemtobothendunits.TheexternalstationearthingconnectionpointinsidetheunitisshowninFigure118.Alltheapparatusisconnectedtotheearthingbusbarviatheswitchgearhousing.Theinterconnectionbetweenunitsiscapableofcarryingtheratedshort-timeandpeakwithstandcurrentfortheearthingcircuit.
4.3.1 Installing the earthing busbarInstallationoperationsareasfollows:a)Unscrewtheright-handscrew(whenthereis
anotherunitontherightside)andloosenanothertwoscrews.Thenmovethebusbartowardstheadjacentunitontheleft.
b)Movethebusbarfromtheunittotheright(whenthereisanotherunitontheright).Addthescrewontherightandscrewupallthescrewswiththecorrecttorque.
Figure 114. Control cable entries
Figure 115. Busbar moved towards the adjacent unit on the left
Figure 116. Busbar moved from the adjacent unit to the right
4.2 Control cablesTheinternalcablesbetweenunitsareeasilylaidthroughopeningsinthesidewallsoftheauxiliarycircuitcompartment.Dependingonthedeliverytimes,therearetwodifferentproceduresforsupplyingtheconnectioncablesoftheunits:• Cablesnotincluded• Cablessuppliedrolledinabundleintheauxiliary
circuitcompartment.Table8givesthecorrecttorquesfortheterminalblocks.
Terminal Blocks
Width of terminal box (mm)
Cross-Section of cable (mm2)
Tightening Torque (Nm)
5 0,2-2,5 0,4-0,6
6 0,2-4 0,5-0,8
8 0,5-6 0,8-1
Table 8. Terminal Blocks
Theoptionsavailableforcontrolcableentryare:• Sideductatbothendsoftheswitchgear.• Aductcanalsobeplacedontheroofofthe
switchgeartosupporttheincomingcables,forexample,fromanoverheadcableladder.
U N I S EC I NS TA L L ATI O N M A N UA L46
NOTE Tightening must be carried out with the correct torque
4.3.2 Main earthing circuit connections between the panels of the SBR functional unit
a)InstalltheprotectionbusbarconductorbetweenpanelsoftheSBRfunctionalunit.
b)ConnecttheL-shapedprotectionconductorbetweentheSBRunitandotherpanels.
4.3.3 Connection of the main earthing circuit for WBC – WBS units
a) Installtheearthingbusbarbetweentheunitsandconnectittothemainearthingcircuit.
4.4 Final installation workCheckpoints• Checkthepaintedpartsoftheswitchgearforany
damage,touchingupwhererequired.• Checktheboltconnectionsandtightenwhere
required(especiallythosemadeduringon-siteinstallationofthebusbarsandearthingsystem.
• Cleantheswitchgearthoroughly.• Removeallforeignobjectsfromtheunits.• Correctlyreplaceallcoverings,etc.removed
duringtheinstallationandconnectionoperations.
• Anyremainingopeningsintheswitchgearhousingmustbeclosediftheyarenolongerneeded.
• Checkthattheisolatingcontactsandinterlockingmechanismsoperatecorrectlyand,ifnecessary,greasethemagainwithIsoflexTopasNCA52.
• Insertanywithdrawablecircuit-breakerpartsandconnectthemtothecontrolcabling.
• Closetheunitdoorsproperly.
c)Earthingbusbarinstalled.
d)Theearthingcablescanbemountedwithbolts,asshowninFigure118.TheM12bolt,markedwiththeearthingsymbol,isreservedfortheexternalstationearthingsystem,theotherM10bolts(3pieces)forthecablesheathsorotherearthingsystems.
e)ConnecttheearthingcablestothemainearthingbusbaroftheSBRfunctionalunit.
Figure 117. Earthing busbar installed
Figure120.SBRunitprotectionbusbarconductor
Figure 118. Positions of the earthing cables
Figure 119. Main protection earthing busbar of the SBR unit
— 4.Cableconnections
D IS TR I B U TI O N SO LU TI O NS 47
— A.Tighteningtorquesforsteelscrewsandnuts/bolts
—
Nuts and bolts Max. tightening torque [Nm]
Type Steel class 8.8
M4 3
M5 5
M6 9
M8 22
M10 45
M12 75
M16 185
—Cheese-head socket screws
Max. tightening torque [Nm]
Type Steel class 8.8
M4 2
M5 4
M6 8
M8 12
M10 35
M12 50
M16 110
—Socket-head screws and round-headed Torx
Max. tightening torque [Nm]
Type Steel class 8.8 Steel class 10.9
M4 2 2
M5 4 4
M6 8 8
M8 12 12
M10 30
M12 60
—Hexagonal-head bolts with flange
Max. tightening torque [Nm]
Type Steel class 90
M5 9
M6 16
M8 34
M10 58
M12 97
M16 215
—Cheese-head Torx Fastite screw
Max. tightening torque [Nm]
Type Steel class 8.8
M6 20
Thevaluesinthetablesmustbeusedunlessthetorqueisspecifiedinthetableofjointtypes.
U N I S EC I NS TA L L ATI O N M A N UA L48
—
Bolts mounted on the CT, TPU typeJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 2.8 16 56
nominal
max. 3.5 20 70
—Bolts mounted on electrical pliersJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 8
nominal 9
max. 10
—Cable connection nutJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 18 35 65 170
nominal 20 40 70 180
max. 22 45 75 190
—Busbar connectionsJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 18 35 65 170
nominal 20 40 70 180
max. 22 45 75 190
— A.Tighteningtorquesforsteelscrewsandnuts/bolts
D IS TR I B U TI O N SO LU TI O NS 49
—
Bolts mounted on the circuit-breakerJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min.
nominal 30 40
max.
—Bolts mounted on the mandolin CTJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min.
nominal 35
max.
—Bolts mounted on the post insulatorJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 25
nominal 8 20 30
max. 31
—Bolts mounted on the connection and switching busbarJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min. 56
nominal 35 60
max. 70
U N I S EC I NS TA L L ATI O N M A N UA L50
—
Bolts for mounting CTJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min.
nominal 40
max.
—GSec and busbarJoint type Tightening torque [Nm]
M5 M6 M8 M10 M12 M16
min.
nominal 35
max.
— A.Tighteningtorquesforsteelscrewsandnuts/bolts
D IS TR I B U TI O N SO LU TI O NS 51
— B.Toolsrequiredforinstallation
Torx wrench• TX30Torxwrench
Allen wrenches• 5mm• 6mm• 8mm
Socket wrenches• 10mm• 15mm• 17mm• 19mm
Ring spanner• 13mm
—For more information please contact:
—More product information: abb.com/mediumvoltageYour contact center: abb.com/contactcenters More service information:abb.com/service
© Copyright 2018 ABB. All rights reserved. The data and illustrations are not binding. We reserve the right to make changes in the course of technical development of the product. 1V
FM20
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04
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Inst
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Sec)
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