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文件種類SDraftedCheckedReviewedApprovedModification-BCHENGGANGNUCLEAR PLANTPHASEI(2×1000MW)文件編DOC. 文件種類SDraftedCheckedReviewedApprovedModification-BCHENGGANGNUCLEAR PLANTPHASEI(2×1000MW)文件編DOC. LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT工程Project文件類 子項Sub-Item設(shè)計階EngineeringSBA:LMA-220VDC B:√C: 工程咨詢國家甲級工咨甲 中廣核工程設(shè) NationalAgradeengineeringCertificationNO:CHINA ERDESIGN NationalAgradeengineeringCertificationNO:內(nèi)部編 ernalCP0905-DE-GN- isthepropertyofCNPDCItmustnotbeused、reproduced、transmittedordisclosedwithoutthepriorwrittenpermisofCNPDC本文件之產(chǎn)權(quán)屬于中廣核工程設(shè)計。未獲本公司，任何人不得擅自使用、、傳遞或泄露該文件。LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT版版日狀 編Drafted校Checked審Reviewed批Approved修改—說Modification-A LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT版版日狀 編Drafted校Checked審Reviewed批Approved修改—說Modification-A LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENTCHENGGANGPLANTPHASEILMA-220VERSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFLMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENTCHENGGANGPLANTPHASEILMA-220VERSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFCHINAERDESIGNLMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT文件修版日章LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT文件修版日章頁修改范圍及依AB2010-2011-8- LMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT4DESCRIPTIONANDDEFINITIONOFLMA-220VDC ERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONANDDEFINITIONOFEQUIPMENT4DESCRIPTIONANDDEFINITIONOF 4.2 4.3. LMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONBDEFINITIONOFLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONBDEFINITIONOF DESCRIPTIONANDDEFINITIONOF4.2Distributionswitchboard-Circuit-breakersandswitch-Instrumen Equipmentcode:001TB.Manufacturer:later.Type:Later.ThemainhorizontalbushasverticalbranchestotheAllbreakersarewithdrawableandcanbepadlocked hewithdrawn Mechanicalindicatorsareprovidedtotheindicatebreak The380/220Vtransformerisinstalledatthebaseofasectioncontainingthebreakingdevice.Itisprotectedagainstcontactwiththeexteriorbyperforatedsheet-metalplated.Ventilationisbynaturalpro s,openingsbeingmade hepanelstoenable ake(onthelow anofthe3doorson(hefrontpanel)andairexit(ontheupperpartofthesection).Aswitchisusedtoseparatethetransformer220VoutputfromthedistributionAnovercurrentrelay dbyacurrenttransform rotectsthetransformeragainstovercurrent.Thisprotectionrelayistime-lagged. Ratedoperatingvoltage220single-4.1.1ThesystemDistributionswitchboardwi tedoutgoingbreakers, ingswitch,transformerandrelays,380VACbreakersupplyingthe withother-380V er :fromMonitoringofPlantComputerinformationandGrounding:see9.2.(switchboard :viaLCA48VDC,LNE220V::LMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONOFRatedLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONOFRatedfrequencyRatedinsulationvoltageumcontinuousbusRatedshort-circuitcurrent54.2.1.2 ingEquipmentRatedinsulationvoltageRated 60°C3VL5750-4.2.1.3220VACoutgoing-Equipment -RatedvoltageRated 60°CThermalreleasesettingat20°CThermalreleasesettingat40°CMagneticreleasesettingBreakingcapacityShort- erruptingtime84.2.1.4TransformersupplyEquipment-RatedvoltageRatedcurrentThermalreleasesettingat60°CMagneticreleasesetting001J4.2.1.5Ground Groundfaultsaredetectedbycontinuouslymonitoringarectifiedcurrentapp nthesystemandground.Arelayisusedtoperformthisfunction.Therelaycontinuouslymonitorsthiscurrentandtriggers armwheninsulationLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONOFfallsbelowthealarmEquipmentInputvoltageAdjustmentrange(kAlarmsetting(k220AC(fromLNEsystem)0.5to25FaultsarelocatedusingaportableACcurrentgeneratorandaportabledetectorwithclamp-onammeter.Faultlocatingequipmentissharedbyseveral ersourceTheunitwilllocatethefaultthefaultwiththesystemenergized.Thesignalgeneratorisconnectedtotheswitchboardbyaleadandplug(socket001PJ)andanACcurrentsignalof4Hzis VoltageVoltagemonitoringisachievedbyavoltagesensingrelay,mountedinarack,with2thresholds(overvoltage,undervoltage)whichactuatealarmcontactswhicharegroupedso tonealarmsignal(overvoltage,undervoltage)istransmittedtothealarmpro singsystem.The tedauxiliaryrelaywhich herelayingcompartmentistime-VoltagesensingEquipment-RatingLowvoltagesettingHighvoltagesetting4.2.1.6.2Time-laggedEquipmentLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONOFSettingLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONRevDEFINITIONOFSettingrangeSetting6to604.2.1.7AuxiliaryAcompartmentinsidetheswitchboardhousestheauxiliary4.2.2Transformerand rotection4.2.2.1EquipmentOutput(kVoltageratioNo-load sonInsulationEfficiencyatfullloadconditionsandCosφ=Short-circuit± CurrentEquipment-Current erAccuracy14.2.2.2.2.OvercurrentEquipmentSettingrange12to48-SettingLMA-220VERSUPPLYSYSTEMMANUALCHAPTER4DESCRIPTIONLMA-220VERSUPP