會計英文實習(xí)匯報Graduationpracticeistocompletethefinalphaseoftheuniversity'scoursetobethemostimportantsectionofthePractice.Practiceiseveryqualifiedstudentsmusthaveanexperiencethatallowsustoenhanceprofessionalisminthepracticeofawarenessandpracticeofawareness.Wepracticeduringtheprocessoftrainingunitsintheschoolandsupport,moreguidanceofexperts,throughtrainingwelearnedalotinclass,notsimplytheknowledgeofschoolforourfuturedesignandlayasolidfoundation.Atthesametimeallowthemselvestocontacttheschoolforthepurposeofinternshiptrainingofourability,thefive-weekinternshiptoincreasetheirabilitytohavealotofknowledge,greatlyimproved.GraduationpurposeInternshipisdesignedtoimprovetheabilityofstudentsandsocialcontactsandtounderstandandmaster,verifyandconsolidatelearnedbasiccoursecontent.Enablestudentstounderstandthemodernhigh-risebuildingdesignandtheactualconstructionofelectricaleasytoignoretheproblem,studentsintegratetheorywithpractice,lovetheprofessional,enthusiastic,committedtothinkingofChina'smodernizationdrive.GraduationcontentToachievetheaboveobjectivepractice,practicethemaincontentshouldinclude:Understandtheinternshipprocessandproductionorganizationofproductionmanagement.Understandtheperformanceofsomeelectricalproductsandfeatures.Controllow-voltagedistributionsystemdesign,weakpartofthedesign,lighting,partofthedesign,dynamicpartofthedesign,lightningprotectionandgroundingpartofthedesign.Instituteofelectricalequipmentusedinoperatingmethodsandthebasicworkingprinciple.Althoughthispracticeisonly3weekstime,butduringthattime,thetheoryforsomecommonthings,withperceptualawareness,feelbenefit.Herearesomeofmysummaryoftheinternshipperiod,andtheirfeelingsandexperiences.Tocarryouttheirworkinthefuture,andthefutureworkofgreathelptome.VisittheWestCampus,DongshengBuildingandCityHallandlinearlow-voltagepowerdistributionroom,andthelayingoftheroofthereareweaknessesinthedesignofsomeofmine.NowIwillexplainindetailthebuildingofthelightningprotectionandgroundingBasicprinciples:Lightningprotectiondesignoftechnicalmeasuresshouldbetheexistingnationalstandard"lightningprotectiondesignofbuildings"forLightningProtection,referto"BuildingLightningProtectionDesignStandard"correspondingrequirements,theuseofballlightningrodprotectionmethod,theuseofotherpotentialjointhemostimportantsafetymeasures.Anti-cloud-to-measure,shouldmeetthefollowingrequirements:airterminalsusingthelightningrod,lightningprotectionzone(network),oracombinationofboth,itshouldbeusedasametalroofbuildingairterminals,butshouldbeconsistentwithregulatoryrequirements.Containingradioactivematerialshouldnotbeusedairterminals.Theeliminationofotherformsoflightning,itshouldonlybeusedwithhighpoletowerroofwasaddedtoourbuildingon.Protrusionsontheroof,suchassatelliteandreceiverantenna,holidaylights,aviationobstructionlightsandair-cooledunit,theroofshouldbeintherangeoflightningprotectiondevices,ifnotcalculatedbyballwithinthescopeofprotectionshouldbeseparatelightningrod,withprotection,lightningprotectiondeviceconnectedwiththeroof.deflectorsshouldgiveprioritytotheuseofreinforcedconcretebuildingcolumnsorshearwallsinthemainbar,butalsoshouldusethebuildingonfireladders,steelcolumns,metalchimneys,etc.,asdeflectors.Whentheuseofsteelinreinforcedconcretecolumns,steelcolumnsasanaturaldrop,andalsousedasagroundingdevicebasedsteelwithnodisconnectcard,butitshouldbelocatedinanumberofsuitablelocationsoutsidethebarconnectedwiththecolumnconnectingplate,forthemeasurement,anexternalartificialgroundingandequipotentialbondingforuse.Brickbuildingssurroundedbyaseparatedeflectorsintheexternalwallsandtheinstallationof1.8metersfromthegrounddisconnectedcard.The1.7metersto0.3metersundergroundforsomeprotectivemeasuresshouldbetaken.Theuseofgroundingdevicesshouldgiveprioritytothebuildingofreinforcedconcretebase.Areinforcedconcretegroundbeam,shouldinthebeamreinforcedwitharinggroundingdevice;notreinforcedconcretegroundbeam,itcannotinthebuildingsurroundingstripofreinforcedconcretebaseclosed,galvanizedflatsteelwithadirectlay-40x4pitintheoutergroovetoformacirculargrounding.Whenthetransformerandtheworkofthedieselgeneratorneutralgrounding,electricalprotectiveearthgroundingsystemworkandshareweakgroundingdevice,thegroundingresistanceshouldbelessthan1euro.Usecommongrounding,theweaksystemsshouldtheirequipmentroom,andbuildinginsulationgroundingstud,withmorethan25mm2coppercableorwireweldedsteelpipemadethroughaseparatedrop,thefoundationsofbuildingsconnectedwiththegroundplate.Weaksystemofgeneralrequirementsforgroundingresistanceoflessthan4ohms,shouldbeanindependentgroundsystemviewoftenBoxuChiletocatchcarownerthereuponlowashwoodhochantargon#?0meters.Sideswipeagainstminemeasuresshouldmeetthefollowingrequirements:Heightover30metersofreinforcedconcretestructures,steelstructures,shouldtakethefollowinganti-swipemineandequipotentialbondingoftheprotectivemeasures:steelframeandreinforcedconcreteshouldbeconnectedtoeachother;shouldbeusedwithinthesteelcolumnorreinforcedconcretecolumnsreinforcedasalightningprotectiondevicedeflectors;shouldbe30metersandovertherailingsontheexternalwalls,doors,windowsandotherlargemetalobjectsandlightningprotectiondeviceisconnected;verticallayingofmetalpipesandmetaltopandlow-enddevicestobeconnectedwiththemine;columnsandringbeamwithoutthebuildings,wallsshouldbelaidatintervalsofaroundthreeoutofgalvanizedroundsteel12todothegradingrings,acombinationofcolumnsandringbeam,theuseofsteelfortheringbeamgradingring.Allthebuildingeverythreeverticalmetalpipeconnectedwithagradingring.Gradingringshouldbeconnectedwiththelightningprotectiondevicedeflectors.Lightninginductionofmeasures,shouldmeetthefollowingrequirements:(1)Theprotectionofmetalobjectswithinthebuildingground,isthemainmeasurelightninginduction.Therefore,thebuildinghousingtheequipment,pipelines,andothermajormetalframeshouldbeclosetoreceivingthegroundingorelectricalequipment,lightningprotectiongroundingdevice(2)paralleltothelayingofpipes,cablesmetaljacketstructureandalongmetalobject,thespacingislessthan100mmshouldbeusedjumperwire,cross-junctionspacingshouldnotexceed30m;crossingclearancelessthan100mm,theshouldbeacrosstheintersection.Lightninginvasionwaveofmeasures,shouldmeetthefollowingrequirements:(1)lineoflowvoltagelinesshouldbeburiedwiththecabledirectlyintothehomeendofthecablejacketortheprotectionofmetalpipeonthedevicereceivingthelightningprotectionandgrounding;ifconnectedtooverheadlinesshouldbechangedintothehousehold50mcable,cableforconnectionatarrestershouldbeinstalled,andwiththecablemetalsheath,steelandironinsulatorfeet,fittings,etc.together,theimpulsegroundingresistanceshouldnotexceed10ohms.Ifoverheadwiresareused,thearrestershouldbeinstalledintooffice.(2)overheadandundergroundmetalpipes,shouldbeinandoutofbuildingsandlightningprotectiongroundingdeviceconnectedat.Fixedonthebuildingofholidaylights,aviationobstructionlightsandotherelectricalequipmentoftheline,shouldbebasedontheimportanceofbuildingtheminetotakecorrespondingmeasuresinvasiveradiowaves:a.nometalorelectricalequipmentprotection