ATD Tools ATD-5954 Manual

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REV03‐13

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

theinverter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inverter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1500watts.

4. Thesurgedrawoftheequipmentorappliancebeingoperatedexceeds3000watts.

5. Thecircuittempera ture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 inverter 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

inverters withthecapabilitytostartandrundifficultreactiveloads,whileprovidingexcellentoverloadcapability.

Thewaveformth at

isgeneratedbythisconversionisa"modifiedsinewave"asshowninthediagrambelow.





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