KORAD KEL102 Use and care manual

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KEL102&KEL103CalibrationInstruction
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Testingequipment:
1. Sixandahalfmultimeter;
2. Onepowersupplywithadjustableoutputvoltage0‐100V,current0‐12Aand
constantcurrent.
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CalibrationProcedures
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Beforetheelectronicloadispoweredon,pressandholdthe“ESC”keytoenterthe
calibrationmode.Atthesametime,the“ESC”keylightison,and00001Gis
displayedonthelowerright.
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1. VerifythevoltagevalueofDAwhenthelowrangeis0.1V:
Method:setthepowersupplyto1Vandthemaximumoutputto1A,setthe
multimetertothevoltagerange,combinethepowersupplyandthemultimeter
intotheloadinterfaceatthesametime,turnontheON/OFFswitch,andadjust
theknobtodisplaythevoltmetervoltageas0.1V,whichcanbeadjustedby
pressingtheleftandrightkeystoincreaseorreduce.ThenpressENTERtoenter
thenextcheck,orpressESCtoreturntothepreviouscheck.
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2. CheckthevoltagevalueofDAwhenthehighlevelis0.1V:
Method:setthepowersupplyto1Vandthemaximumoutputto1A.Setthe
multimetertothevoltagerange.Combinethepowersupplyandthemultimeter
intotheloadinterfaceatthesametime.TurnontheON/OFFswitchandadjust
theknobtomakethevoltmetervoltagedisplay0.1V.Andpresstheleftandright
keystoadjusttheincreasedandreducedvalue.ThenpressENTERtoenterthe
nextcheck,orpressESCtoreturntothepreviouscheck.
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3. VerifyDAandADwhenthemaximumvoltageis18V:
Method:setthepowersupplyto20Vandthemaximumcurrentoutputto1A.
Setthemultimetertothevoltagerange.Combinethepowersupplyandthe
multimeterintotheloadinterfaceatthesametime.TurnontheON/OFFswitch
andadjusttheknobtomakethevoltageonthevoltmeterdisplay18V.Andpress
theleftandrightkeystoadjusttheincreasedandreducedvalue.Thenpress
ENTERtoenterthenextcheck,orpressESCtoreturntothepreviouscheck.

4. VerifyDAandADwhenthemaximumvoltageisupto90V:
Method:setthepowersupplyto100Vandthemaximumcurrentoutputto1A.
Setthemultimetertothevoltagerange.Combinethepowersupplyandthe
multimeterintotheloadinterfaceatthesametime.TurnonON/OFFswitchand
adjusttheknobtomakethevoltageonthemultimeterdisplay90V.Andpressthe
leftandrightkeystoadjusttheincreasedandreducedvalue.ThenpressENTER
toenterthenextcheck,orpressESCtoreturntothepreviouscheck.
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5. CheckthezeropointofDAlowcurrent:
Method:setthepowersupplyto5Vandthemaximumcurrentoutputto1A.Set
themultimetertothecurrentrange.Connectthepowersupplyandthe
multimetertotheloadinterface.TurnontheON/OFFswitchandadjusttheknob
tomakethemultimetercurrentdisplaybetween1mAand2mA.Andpressthe
leftandrightkeystoadjusttheincreasedandreducedvalue.ThenpressENTER
toenterthenextcheck,orpressESCtoreturntothepreviouscheck.
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6. CheckthezeropointofDAhighcurrent:
Method:setthepowersupplyto5Vandthemaximumcurrentoutputto1A.Set
themultimetertothecurrentrange.Connectthepowersupplyandthe
multimetertotheloadinterface.TurnonON/OFFswitchandadjusttheknobto
makethecurrentonthemultimeterdisplaybetween1mAand2mA.Andpress
theleftandrightkeystoadjusttheincreasedandreducedvalue.Thenpress
ENTERtoenterthenextcheck,orpressESCtoreturntothepreviouscheck.
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7. VerifyDAandADwhenthemaximumvalueofthecurrentlowgearis3A:
Method:setthepowersupplyto5Vandthemaximumcurrentoutputto5A,set
themultimetertothecurrentrange,connectthepowersupplyandthe
multimetertotheloadinterface,turnontheON/OFFswitch,andadjusttheknob
tomakethecurrentonthemultimeterdisplay3A.Andpresstheleftandright
keystoadjusttheincreasedandreducedvalue.ThenpressENTERtoenterthe
nextcheck,orpressESCtoreturntothepreviouscheck.
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8. VerifyDAandADwhenthemaximumvalueofthecurrentlowgearis9.9A:
Method:setthepowersupplyto5Aandthemaximumoutputto11A,setthe
multimetertothecurrentrange,connectthepowersupplyandthemultimeter
totheloadinterface,turnontheON/OFFswitch,andadjusttheknobtomake
thecurrentonthemultimeterdisplay9.9A.Youcanpresstheleftandrightkeys
toincreaseordecrease.ThenpressENTERtosaveandcompletetheverification,
orpressESCtoreturntothepreviousverification.