ATD Tools ATD-5952 Manual

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REV03‐13

BlownPowerInverterFuses

Yourpowerinverterisequippedwitha20‐ampspadetypefuse.Withreasonablecareitshouldnotbenecessary

toreplacethesefuses.Mostblownfusesaretheresultofreversepolarityorashortcir cuitwithintheapplianceor

equipmentbeingoperated.Ifthefusehappenstoblow,disconnect

theapplianceorequipmentimmediately,find

thesourceoftheproblem,repairit,andtheninstallanewfuse.

SourceofPower

Mostautomobileandmarinebatterieswillprovideanamplepowersupplytotheinverterfor30to60minutes

evenwhentheengineisoff. Actualtimemayvarydependingupontheageandconditionofthebattery,andthe

powerdemandbeingplacedonitbytheequipmentbeingoperated

withtheinverter.

Ifyoudecidetousetheinverterwhi le theengineisoff,werecommendthatyoustarttheengineeveryhourand

letitrunforapproximately10minutestorechargethebattery.Wealsorecommendthatthedevicepluggedinto

theinv erterbeturnedOFFbefore

startingthevehicleengine.

Althoughitisnotnecessarytodisconnecttheinverterwhenturningovertheengine,itmaymomentarilyceaseto

operateasthebatteryvoltagedecreases.

Whenthein verterisnotsupplyingpower,itdrawsverylowamperagefromthebatteryandmaybeleftconnected

tothe

batteryforuptothreehours.

However,werecommendtheinverteralwaysbedisconnectedwhennotinuse.

InverterProtectionFeatures

TheREDLEDIndicatorlightwillturnonandtheinverterwillturnitselfoffautomaticallywhen:

1. Thepowerinputfromthebatterydropsto9.5volts.(Whenthepowerinputdropsto10.5volts,analarmwill

soundforanextendedperiod).

2. Thepowerinputfromthebatteryexceeds

15.5volts.

3. Thecontinuousdrawoftheequipmentorappliancebeingoperatedexceeds200watts.

4. Thesurgedrawoftheequipmentorappliancebeingoperatedexceeds400watts.

5. Thecircuittemperatureexceeds165°F.

Note

• Theinverterisequippedwithacoolingfanwhichisdesignedtoruncontinuouslywhiletheinverteris

operating.Automaticshutdowncausedbyhighcircuittemperatureswilloccurwhenthecoolingfanis

unabletomaintainacoolenoughtemperatureforsafeoperationoftheinverter.

• Inthe

eventofautomaticshutdownorcontinuousaudiblealarm,turntheinverterrockerswitchtothe

OFF(0)positionuntilthesourceoftheproblemhasbeendeterminedandresolved.

HowPowerInvertersWork

There are two stages in which a power in verter changes the 12‐volt DC (or battery) power into 110V AC

(householdcurrent).



STAGE1:

TheinverterusesaDC‐to‐DCconvertertoincreasetheDCinputvoltagefromthepowersourceto145voltsDC.



STAGE2:

Theinverter

thenconvertsthehighvoltageDCinto110VAC(householdcurrent),usingadvancedMOSFET(Metal‐

oxide‐SemiconductorFieldEffectTransistor)transistorsinafullbridgeconfiguration.Thisdesignprovidesallour