GW22A252Ⅲ 说明书e文档格式.docx
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GW22A252Ⅲ 说明书e文档格式.docx
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Ⅴ、Productstructureandoperationprinciple…………………………..…5
Ⅵ、Packageanddelivery……………………………………………..…8
Ⅶ、Inspectionandstorage…………………………………………..…8
Ⅷ、Unloadingandliting……………………………………………..…9
Ⅸ、Installationanddebugging…………………………………..…9
Ⅹ、Acceptanceandfine-tuningbeforeinstallationonsite…………………13
Ⅺ、Accompanyingdocument………………………………14
Ⅻ、Orderinginstructions…………………………………………………14
Ⅰ、General
1.Functions
GW22A-252D(W)Ⅲseriesisathree-phase,AC,HVdisconnectorofsinglepost,verticalbreak,singlearmshrinkableclampstyle.(briefedas“GW22A-252Ⅱdisconnector”)isusedinpowersupplysystemwithratedfrequency50Hzandratedvoltage252kV,providingHVlinetotransitionundernoloadconditionsaswellasdisconnectingtherepairedHVbusbar、circuitbreakerandotherhighvoltageelectricequipmentandbetweenliveHVlines.Meanwhile,whentheoperationmodeshouldbealteredinpowergridsystem,itisavailableforbreaking/makingbustransfercurrent,regulatedchargingcurrentofvoltagetransformer,lightningarrestorandect,withoutbreakingormakingon-loadcurrent.
2.Specification
GW22A-252D(W)Ⅲ/J3150-50
Ratedshort-timewithstandcurrent50kA
Ratedcurrent3150A
Motoroperationmechanism
ImproveddesignNo.
Anti-pollution
Withearthingswitch
Ratedvoltage252kV
designNo.22A
Outdoor
隔离Disconnector
3.Standard
◆GB1985-2004HVACDisconnectingSwitchandEarthingSwitch
◆GB/T11022-1999CommonTechnicalRequirementsforHVSwitchgearandControlGear
◆DL/T486-2000OrderingTechnicalConditionsforHVACDisconnectorandEarthingSwitch
◆DL/T593-2006HVACDisconnectorandEarthingSwitch
II、WorkingConditions
◆Ambienttemperature:
-50℃~+50℃;
◆Altitude:
within2000m
◆Windvelocity:
within700Pa
◆Seismicintensity:
9degree;
◆Thicknessoficecovering:
within20mm
◆Pollutionlevel:
class,III,IV
◆Themountingplaceshouldbefarfrominflammable,explosive,corrosivedangerandviolentvibration.
◆Specialworkingconditionsshallbesolvedbyclientsandmanufacturer.
III、Characteristic
GW22A-252ⅢdisconnectorisakindofperfectedandimproveddisconnectordevelopedonthebasisofGW22A-252.Itimprovesgoodabilityinfractureofporcelaininsulator、failureofoperationanddistortion、overheatofconductioncircuitaswellasrustcomparingwithotherkindofdisconnectors.Itfocusesonimprovingqualityandoperationreliabilityofequipmentandprovidingthefollowingcharacteristics:
a.Themaincircuitadoptstop-gradeanti-rustal-alloythatprovidesexcellentconductingcapacity,lightweight,highmechanicalintensity;
thedrivingpartofthemainblade,balancespring,clampingspring,resetspringaredesignedintheconductpipetofreefromtheeffectbyoutsideenvironment.
b.Flexibleconnectionadoptingpurealuminummaterialwithconductinginterfacesilveredisofgoodconductivityandhighthrough-currentcapacity.Eachaluminumlayerinterfaceisanodizedthatstrengthenanticorrosionperformance.
c.Eachpartofconductingloopexceptdynamicandfixedcontactsmeshingpointsurveyisconnectedandconductcurrentbyfixedflexibleconnection,andsealgumisappliedallaroundfixedconductinginterfaceincaseofmoisture.Thecontacttubesurfaceofstylusandfixedcontactsissilver-coated,dynamicandfixedcontactspressureisenlarged.Suchmeasuresasaddinginsulationsonupperconductingrod(incaseofcurrentflowdivided)istakentoensurereliablethrough-flowofconductingloopwithoutoverheat.
d.Toppressuretrippingdeviceisimprovedtoensurereliablemakingandkeepgoodworkingstateundertheactionofwindforceandelectricdynamicforce.Modifytheinsulatingrollerintostainlessrollertoavoidagingandfragment.
e.Fingerandclampingspringisarrangedoutsideofconductingtubefortheconvenienceofadjuston-siteclampingforceandreplacefaultedfinger.Silasticsealcoveranddirect-actingsealingstructureofoilsealandsmoothshaftisadoptedonbothsideofconductingrodtototallypreventtopenetrationofrainanddustsothatavoidingrustingandfreezingofaccessories.
f.Rockinglinksadoptself-lubricatingbearingandinsulatingoil-freebearing,transmissionlinksadoptshotgalvanizingoscillatingbearing.Allshaftpinmadeupwithaluminumbronzeorstainlessmaterialisofexcellentanticorrosionperformance,smallrotationresistance,smallfitclearance,reliabletransmissiontoavoidspindleseizedbycorrosion.
g.Suchmeasuresasadoptinghigh-qualityrawmaterialsurfaceanti-corrosiontreatmentaretakentoimproveanti-corrosionperformanceofwholeproduct.Forexample,thesurfaceofallsteelaccessoriesishotdipgalvanizedoradoptsstainlessmaterial;
allshaftpinusealuminumbronzeorstainlessmaterial;
non-conductinginterfaceofconductingtubisanodized.
h.Earthbladeadoptsall-in-one-takestructureofcounterweightbyheavypunch.Earthingdynamiccontactsadoptself-operatedstructurewithsimpleandbeautifulstructure,smalloperationforcehandreliableaction.
i.Theverticaltransmissionrodofmainearthmechanismconnectedtobodywithconnectiontypeofsplintandbeamclamp.Onesideoflevel3driverodinmainearthbladeadoptsUtypeboltandbeamclampconnectionstylewhiletheotheradoptsadjustablejointoftwo-threadworm,cancellingon-siteweldingconvenientlyfortheon-siteinstallation,adjustment,disassembleandmaintenance.
j.ThemainbladeisincorporatedwithCJ6improvedmotormechanism,theearthbladeismatchedwithCSGimprovedhandmechanism,whichprovidesbeautifuloutline,stronganti-corrosivecapacity,excellentwaterproofanddustproofperformances.Thesecondarycomponentsareboughtfromfamousfactories.Interlockfunctionsareavailable.
k.Top-gradepostinsulatorisadopted,themeshingplaceisofwater-proofstructure,whichconformstosafetyfactorofmorethan2.5timesofmechanicalload.
l.Steel-madehot-dippedfoundationsupport,andverticalandhorizontaldrivingrodsareavailablefortheusertoselect.
IV、ClassificationandTechnicalParameter
1.Clarifications
◆Dividedbycurrentrating:
2000A、3150A、5000A;
◆Dividedbyquantityandpositionofearthingswitches:
unearth、earthing;
◆Dividedbydistributionofswithes:
45°
arranged、135°
arranged、one-linearraged。
2.Maintechnicalparametersseenintable1
Table1
No.
Item
Unit
Technicalparameter
1
Ratedvoltage
kV
252
2
Ratedcurrent
A
2000
3150
5000
3
Disconnector
Ratedpeakwithstandcurrent
kA
125
160
Ratedshort-timewithstandcurrentandduration
50/3
63/3
4
Earthingswitch
5
Rated1minpowerfrequencywithstandvoltage
(effectivevalue)
Toearth
460
Acrosscontact
460+145
6
Ratedlighteningimpulsewithstandvoltage
(peak)
1050
1050+200
7
Breakbus-transferinductioncurrentcapacity(busbartransfervoltage300V)
2520
8
Breaking-makingsmallcapacitivecurrent
9
Breaking-makingsmallinductivecurrent
10
Radiointerferencelevel
μV
≤500
11
mechanicallife
time
3000
12
Ratedterminalstaticmechanicalload
Horizontallongitudinal
N
Horizontallateral
1500
Verticalforce
1250
13
Ratedcontactregion(flexiblebusbar/rigidbusbar)
Longitudinaldisplace
mm
200/150
Horizontaltotaldisplace
500/150
Verticaldisplace
250/150
3.Productstructureandparametersseenintable2
Table2
Contactinsulatingdistance(≥mm)
2550
Insulatingdistancetoearth(≥mm)
Impedanceofmaincircuit(≤μΩ)
≤180
≤150
≤100
Threephasedclosingnonsynchronismofmainblade(≤mm)
20
Threephasedclosingnonsynchronismofearthingblade(≤mm)
Opening-closingtimeofmotor-operatingmechanismformainblade(s)
12±
Outputangleofmotor-operatingmechanismformainblade
135°
Outputangleofmanpowermechanismforearthingblade
90°
V、Productstructureandoperationprinciple
1.Structureofdisconnector
GW22A-252Ⅲdisconnector(single-poleassemblysketchisshowninpic7,three-poleassemblysketchisshowninpic8)mainlyconsistsofpedestal、postinsulator、rotatinginsulator、mainblade、fixedcontact、operatingmechanismetc.Earthswitchcouldbeincorporated.
Thepedestaliscomposedofthechannelsteelandsteelsheet.Thelowerpartisdesignedwithinstallationholetofixwiththefoundation,theupperpartismountedwithinsulationpost,thesideisabletobeinstalledwithearthswitch;
anditcouldalsobeinstalledwithmechanicalinterlockplateetc.
Theinsulator,dividingintothepostinsulatorandtherotatinginsulator,ismadebythetop-gradeporcelain.Itestablishestheinsulationtoearthforthelivesystemandguaranteesthemechanicalstabilityforthedisconnectorundermovingorfixedload.
Themainblade,withsinglecantileverandshrinkablestructure,iscomposedbytheupper-pipeequipment、lower-pipeequipment、pedestaletc.Themovingcontactisequippedonthetopofupper-pipeequipmentandthecontactingpressureisproducedandheldbythepresstrippingdevice(insidetheupper-pipeequipment).Thefixedcontactiscomposedbythefixedcontac
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