电气安装、低压电器、照明电气培训（electrical installation, low voltage electrical equipment, lighting, electrical training）

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电气安装、低压电器、照明电气培训（Electricalinstallation,lowvoltageelectricalequipment,lighting,electricaltraining）Electricalinstallation,low-voltageelectricalappliances,electricallighting.Txtteachertraining,youaremydevil,wereclosertoyou,isfarawayfromthebuddha......JuniormiddleschoolPEteachersaid:whodarestowearaskirtformyclass,hesentherupsidedown.Thispapercontributedbyhanxiao216.DocdocumentmayattheWAPendofthebrowsingexperiencepoor.SuggestyouselectTXT,ordownloadthesourcefiletothemachineview.Electricalinstallation,low-voltageelectricalappliances,electricalinstallation,low-voltageelectricalappliances,low-voltageelectricalappliances,lightingelectricalequipmentaccordingtonetworkoperationselectriciantrainingmaterialsaccordingtoP232lightingnetworkoperationselectricaltrainingmaterialsP356installation"definitionofelectricalequipmentinstallationandcommissioningofelectricalequipmentinstallationandcommissioning"electricalequipmentinstallationandcommissioning,low-voltageelectricalappliancesandthecurrentclassificationstandardintheworkingvoltageofAC1000V,DC1200Vfollowingelectricallinescalledlow-voltageelectricalappliances.Therearekindsoflow-voltageelectricalappliances,accordingtoitsstructureanduseobjectcontrol,canhavedifferentclassification,thefollowingthreecategoriesintroduced:1,accordingtotheuseandcontrolofdifferentobjects,canbedividedinto low-voltageelectricalpowerdistributionandcontrolapparatus(1)forelectricpowerdistributionlow-voltagepowernetworkofthiskindelectricalappliancesincludingknifeswitch,switch,aircircuitbreakersandfuses.Maintechnicalrequirementsforelectricpowerdistributionisbreakingability,limitingeffectinsystemfaultprotectionactionisaccurate,workreliable;havesufficientthermalanddynamicstability.(2)forcontrollingtheelectricpowerdriveandautomaticcontrolsystemoftheelectricalcontactor,includingstarterandcontrolrelay.Themaintechnicalrequirementsofelectriccontrolishighoperationfrequency,longservicelife,thecorrespondingconversioncapability.Anounthatdenotesthemaintechnicalindicatorsoflow-voltageelectricalappliances,the1insulationstrengthreferstotheelectricalcomponentsofthecontactisinoffstatewhenthevoltagetolerancevaluebetweenstatichead(nobreakdownorflashoverphenomenon).2,moistureresistanceperformancetoensuretheelectricalenvironmentallowswetconditionswork.Theconductiveparts3,limitthepermissibletemperatureriseofelectricalappliances,throughthecurrentwillcausetheheatingandtemperaturerise,temperatureriselimitreferstopreventexcessiveoxidationandhightemperaturemeltingandtheappreciation(=actualmeasuredtemperaturerisetemperatureandambienttemperature).4,theoperatingfrequencyofelectricalcomponentsinunittime(1hours)themaximumnumberofallowedoperations.5,thelifeoftheservicelifeoftheelectricappliancesincludingtwoindicatorsofelectricallifeandmechanicallife.Electricallife:referstotheelectricalcomponentsofthecircuitcontactintheprescribedconditions,thetotalnumberofthenormaloperationoftheratedloadcurrent.Mechanicallife:referstothe electricalcomponentswithintheprescribedconditions,thetotalnumberofnormaloperation.2,accordingtothedifferentmodeofoperation,canbedividedintolowvoltageelectricalappliancesandelectricalautomaticmanual(1)automaticappliancesbyelectromagnetic(orcompressedair)tocompletetheworkofmakingandbreaking,starting,reverseandstoptheappliancecalledtheautomaticelectricappliance.Automaticelectricalcontactor,relayandsoonarecommonlyused.(2)manualworktocompletethehumanappliancesthroughconnectinganddisconnecting,starting,reverseandstoptheelectricalappliancescalledmanual.Manualappliancesareusedtoswitch,switchandmasterappliancesetc..3,accordingtotheworkingprinciplecanbedividedintoelectromagneticelectricalandnonelectricalappliancescontrolwewillmainlyintroduceseveraltypicallow-voltageelectricalappliances,suchasknifeswitches,fuses,circuitbreakers,contactors,relays,electricalappliances,etc.themainstarter.Inaddition,accordingtotheworkingconditionsoflow-voltageelectricalappliancescanbedividedintogeneralindustrialelectricalappliances,electricalappliances,electricalappliances,marinechemicalindustry,mineelectricalappliancesandelectricaltractionandothertypesofair,protectionforms,fordifferenttypesoflow-voltageelectricalappliances,moistureresistance,corrosionresistance,impactresistanceandotherpropertiesDifferentrequirements.Two,thebasicuseoflow-voltageappliances,waterinourdailylife,inthepipelineconveyingwater,weshouldinstalldifferentvalvestocontrolandadjusttheflow.Inthetransmissionofpowertransmissionlinesand theuseofvariousoccasions,butalsotousedifferentappliancestocontrolthecircuitthroughandoff,thecircuitparametersareadjusted.Itisonlythetransportanduseofelectricalenergythatismuchmorecomplicatedthantheuseoftapwater.Useoflow-voltageelectricalappliancesinthecircuitisbasedonexternalsignalsorrequirements,automaticormanualswitchingonandoffcircuit,continuousordiscontinuouschangecircuitstate,thecircuitswitching,control,protection,detectionandcontrol.Three,low-voltageelectricalequipmentofthefulltypeofnotationandcodemeaning,inordertoproduce,sell,manageanduseconvenient,ourcountryonallkindsoflow-voltageelectricalappliancesaccordingtotheprovisionsofthemodel.Itconsistsofcategorycode,groupcode,designcode,basicspecificationcodeandauxiliaryspecificationcode,whichconstitutethewholetypeoflow-voltageapparatus.Eachlevelcodemaybefollowedbyaderivationcode.Thefullsizeoftheproductisillustratedinfigure1.Eachpartofthewholemodeloflow-voltageelectricalappliancesmustusetheprescribedsymbolsornumbers,itsmeaningis:1,groupnameandcategorycodeincludingcodecategories,inPinyinletters,onbehalfofthelow-voltageelectricalapparatusbelongingtothecategory,andbelongsinthesameclassintheelectricappliancegroup.2,thedesigncodeisexpressedinfigures,whichshowsthedifferentdesignsequencesofsimilarlow-voltageelectricalcomponents.3.Thebasicspecificationsandcodesareexpressedinnumbers,indicatingdifferentspecificationsandvarietiesinthesameseriesofproducts.4.Theauxiliaryspecificationcodeisexpressedinfiguresindicatingdifferentproductsinthesameseriesandinthesamespecifications.Amongthem,thecombinationofclasscodeand designcodeindicatestheseriesofproducts,whichisusuallycalledserialnumberofelectricappliance.Thesameseriesofelectricalcomponents,theuseofthesameprincipleofworkandstructure,andspecifications,capacity,asneeded,therecanbemanykinds.Forexample:JR16istheserialnumberofthermalrelay,thestructureandworkingprincipleofthermalrelaywithinthisseriesarethesame;butitsratedcurrentthermalcomponentsfromafewtenthstotensofamperesampere,dozensofspecifications.Theauxiliaryspecificationcode3Disa3phaseheatelementwithdifferentialphasebreakprotectiondevice.Therefore,thethree-phaseasynchronousmotorhasthefunctionsofoverloadandphasefailureprotection.Themeaningofcodeandderivationcodeoflowvoltageapplianceclassisshownintable4-14-2.Five,low-voltageelectricalequipmentstructurerequirements,low-voltageelectricalproductsofvarioustypes,largequantity,verywiderangeofuses.Inordertoensurethespecifications,performanceandqualityoflowvoltageelectricalproductsproducedbydifferentproducingareasandenterprises,theyarecommonandinterchangeable,Designandmanufacturemustbeinstrictaccordancewiththerelevantnationalstandardsoflow-voltageelectricappliances,especiallyallkindsofelectricalswitchseriesmustguaranteetheimplementationofbasicthree(standardizationanduniversalization),four(unifiedspecifications,technicalconditions,appearanceandinstallationdimensions,wearingpartsoftheprincipleofunity).Inthepurchaseandselectionoflow-voltagecomponents,wemustpayspecialattentiontocheckwhetherthestructureconformstothestandard,topreventfutureoperationandmaintenanceworkhiddentrouble andtrouble.1,alowvoltagepowerdistributionroom)doorsshouldopentotheoutside,thedoorratguard;2)withlightingandventilationshutters,blindsshouldrain,snow,smallanimalintotheroom;3)cableditchslopeandpropersump;4)shouldnotditchcoverplateofcabletrench5);anteriordiscchannelmorethan1.3meters,afterthepassageofmorethan0.8meters,andthesafetybarrier;6)alayerofdistributionroomshouldbe0.5metersabovethegroundelevation.Two)distributionpanelinstallation1)distributionpanelshouldbestandarddisk,topwithcover,frontdoor;2)distributionpanelsurfacecolorshouldbeconsistent,noscratchesonthesurface;3)switchboardbusshouldhave4color;)panelshouldbeinstalledvertically,theverticaldeviationislessthan5o;5)pull,closingoropeningandclosingthedoor,thediskbodyshouldbenoshakingphenomenon;6)paneloncurrentmeter,voltagemeterinstalledaccordingtotherequirements;7)distributionpaneloutletloopshouldbemarked;8)distributionofabusasfaraspossiblebyacopperwireconnection,crimpingscrewsonbothsidesofagasket,aspringwashernutside,suchasmultistrandplasticcopperwire,coppernoseshallbepressedtwotimes;9)panelcontrollineshouldfocusonwiring,anduseaplasticbeltandbandagebandage.Set,controlcablesparewireswoundinthecontrolcablebranch10)spiral;switchboardtransformer,motorprotectorandothersmallpiecesshouldbefirmlyfixed.Three,theinstallationofcablechannel1)installationshouldcomplywiththedesignrequirementstocheckwhetherthecabletrenchwidth,depth,turningandcrossingtheburiedcable;2)intoaditch,notstrictlyshouldbestraightened,relaxationinto awaveshape;the3endoftwo)thecableshouldbelefttodomaintenanceofthelengthofthemargin;4)cablefixationorfixedpointdistanceshouldnotbegreaterthan1meters;5)whenlayingthecable,pipediametershouldnotbelessthan1.5timesofcablediameter,andnotlessthan100mm;6)incablelayingundergroundcableorwall,throughthefloor,shouldwearatubeortakeotherprotectivemeasures;7)fromtheundergroundcableorcablechannelleadstotheground,thegroundforaperiodof2metersintheapplicationofmetaltubeorcovertobeprotected;8)cableburieddepthof0.7meters,thecableshouldbethe100mmthickblanketThesoftsoilorsand,concretecoverandprotection,andburiedcablemarkerpile;9)buriedcablesdonotconnectacablelayaboveorbelowthepipeline;10)thegeneralprohibitionofgroundsurfacecable,otherwiseshouldbetakentopreventmechanicaldamagemeasures;11)thesamevoltageandcablelaying,cablespacingshouldbegreaterthan35mm,andnotlessthantheouterdiameterofthecable;12)withlowvoltageandhighvoltagecablesshouldbelaidseparately.Thenetdistanceshallnotbelessthan150mmintheparallellaying;13)thecablesinthepowerdistributionroomshallbearrangedinorder,andshallbefastenedwithtiewiresandmarkedwithsigns;14)thelevelofcablehanginginthecable,fixedpointdistanceshouldnotbegreaterthan0.6meters.Four,themotorinstalled1)checkthemotornameplate,seepower,voltagewhethermeettherequirementsofthedrawings;2)checkthemotorterminalboxiscorrect,screwsareloose,junctionboxesarewellsealed;3)insulationresistancedetectionofthemotor,thenewequipmentshouldbegreaterthan1M,theoldequipmentshouldbegreaterthan0.5M;4)motorcablelead groundwearsteelprotection,thegroundpartshouldbegreaterthan40cm,fixedundergroundpartshouldnotbelessthan30cm;5)motorcablelinenosecrimping,thezerolinepressureinthegroundingscrew;6)ofcableheadandthreadsteelbifurcationapplicationplasticbeltthepackageisgood,topreventrainwaterfromentering;7)motorcablelengthshouldbethesamerich,cambershouldbeconsistent;8)motorcabletube,motorshell,motorcontrolcabinetshoulddoelectricalgroundingprotection.9)thecurrentrelay,motormotorprotector,relaytimeadjusted;10)accordingtotheratedcurrentofthemotorcurrentmetermarktheredline.Five,theinstallationofcabletray1)accordingtothenumberandselectionofbearingcablecabletraysuitable;2)highandlowvoltagecabletrayshouldbeinstalledseparately;3)cabletraysupportdistanceshouldnotbegreaterthan6meters,themaximumshouldnotbegreaterthan8meters,otherwisethecabletrayshouldbelaidunderthebearingframe;4)cabletrayalongthepiperackwheninstalledinthemainpipeshouldbe1.5metersaboveandparallelpipelinelaying,andslightlytooneside;5)cabletrayinstallationshouldbelevel,themaximumsagshouldbelessthan10mm;6)cabletrayinstallationwithoutweldingfixedonthebracket,cabletrayisnotlowerthanthebridgeonbothsidesoftheapplicationthedepthofthesteelplatetofix,preventcablebridgeinversionanddistortion;7)cabletrayisnotallowedtocross,shouldbearrangedhorizontally,andgaps;8)cabletraylayingcable,shouldcoverallthecoverplate,andtopreventwindblown.Six,theinstallationoflightinglamp1)heightabovethegroundshallnotbelessthan2.5meters;2)switchshouldbeinstalledintheline;3)pullswitchfrommorethan1.8 metersawayfromthewallswitchisnotlessthan1.3metershigh,thesocketisnotlessthan0.8metershigh,lowonthesocketisnotlessthan0.2meters;4)pulltheswitchandceilinglampboxshouldbefixedbymeansofTaiwan;5)ordinarypendantlamp,lampweightnotmorethan1kg,theavailablelightlinetheirownchandelierline,butthelampandceilinglampboxshouldplayabackbutton;weightmorethan1kg,shouldadoptthechainorsteelwirehoisting,andshouldnotbeartension;6)lampframetubewireorchandeliermustnothavejoints;7)usingscrewlampholders,fire(phase)shouldbeconnectedtothetopcore,zerolineconnectionthreadpole;8)usesasteelpipeasalamphanger,thepipediametershouldnotbelessthan10mm,thewallthicknessofsteelpipeshouldnotbelessthan1.5Mm;9)thesameroomorplacearowmountedluminaire,thecenterlinedeviationshouldbelessthan5mm;10)whenthechandelierlampweightmorethan3kg,shouldadopttheembeddedfixedhookorbolt;11)lampwire:minimumsectioncoppercoreisnotlessthan1mm2,thealuminumcoreisnotlessthan2.5mm2;12methodofmountingwiring)ordinarylampconductingwireadoptsgeneralsheathwire,Thefirstwirefinishingstraightaftertheprisoninthepremarkedthelevelofthewallwithanaillinecardline,wirejointshouldbeplacedintheswitchboxandlampbox,cardsupportspacingisnotgreaterthan30mm;severalparallelsheathedwirelaying,shouldbeenoughtoclose,obviouslynogapsbetweenthelineandtheline.