GW22A252Ⅲ隔离开关说明书E.docx

GW22A252Ⅲ隔离开关说明书E.docx

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GW22A252Ⅲ隔离开关说明书E

GW22A-252Ⅲ型隔离开关

GW22A-252ⅢDISCONNECTORSWITCH

安装维修使用说明书

INSTALLATIONANDOPERATIONMANUAL

编号：

0TK.466.5028

No：

0TK.466.5028

山东泰开隔离开关有限公司

ShandongTaikaiDisconnectorCo.,Ltd

二○一○年五月

May.2010

Catalogue

1、Summary………………………………………………………..…………2

2、Workingconditions…………………………………………..……2

3、Characteristic………………………………………………………..……3

4、Productclarificationsandtechnicalparameters……………………..…4

5、Productstructureandoperationprinciple…………………………..…5

6、Packageandshipping……………………………………………..…8

7、Inspectionandstorage…………………………………………..…8

8、Unloadingandhoisting……………………………………………..…9

9、Installationandcommission…………………………………..…9

10、Acceptanceandfine-tuningbeforeinstallationonsite…………………13

11、Accompanyingdocument………………………………………14

12、Orderingnotice…………………………………………………14

1、Summary…………………………………………………………………………

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

◆IEC62271-102HVACDisconnectingSwitchandEarthingSwitch

◆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、Characteristics………………………………………………………………

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、Productclarificationsandtechnicalparameters……………………………

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

kA

50/3

63/3

4

Earthingswitch

Ratedpeakwithstandcurrent

kA

125

Ratedshort-timewithstandcurrentandduration

kA

50/3

5

Rated1minpowerfrequencywithstandvoltage

（effectivevalue）

Toearth

kV

460

Acrosscontact

460+145

6

Ratedlighteningimpulsewithstandvoltage

（peak）

Toearth

kV

1050

Acrosscontact

1050+200

7

Breakbus-transferinductioncurrentcapacity（busbartransfervoltage300V）

A

2520

8

Breaking-makingsmallcapacitivecurrent

A

2

9

Breaking-makingsmallinductivecurrent

A

1

10

Radiointerferencelevel

μV

≤500

11

mechanicallife

time

3000

12

Ratedterminalstaticmechanicalload

Horizontallongitudinal

N

2000

Horizontallateral

1500

Verticalforce

1250

13

Ratedcontactregion（flexiblebusbar/rigidbusbar）

Longitudinaldisplace

mm

200/150

Horizontaltotaldisplace

500/150

Verticaldisplace

250/150

3.Productstructureandparametersseenintable2

Table2

No.

Item

Unit

1

Contactinsulatingdistance（≥mm）

2550

2

Insulatingdistancetoearth（≥mm）

2000

3

Impedanceofmaincircuit（≤μΩ）

≤180

≤150

≤100

4

Threephasedclosingnonsynchronismofmainblade（≤mm）

20

5

Threephasedclosingnonsynchronismofearthingblade（≤mm）

20

6

Opening-closingtimeofmotor-operatingmechanismformainblade（s）

12±1

7

Outputangleofmotor-operatingmechanismformainblade

135°

8

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-pipeequipmentandthecontactingpressureisproduced