19
Nothingcomes close to a Cobra®
Specifications
Operation
Specifications
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Continuousoutput power (1hour) . . . . . . . . . . . 2500W
Surgerating (0.1 second) . . . . . . . . . . . . . . . . . . 5000W
Peakefficiency (12V –1⁄2 load) .. . . . . . . . . . . . . >88%
Efficiency(full load, 12V) . . . . . . . . . . . . . . . . . . . > 83%
Noload current draw. . . . . . . . . . . . . . . . < 0.5A(12.6V)
Outputwaveform (resistive load) . . . Modified sine wave
Outputfrequency . . . . . . . . . . . . . . . . . . . . 58HZ – 62HZ
Outputvoltage . . . . . . . . . . . . . . . . . . . . . . 109V – 120V
Inputvoltage .. . . . . . . . . . . . . . . . . 10.4VDC –14.4VDC
Alarmvoltage (unload) . . . . . . . . . . . . . . .10.2V – 10.8V
Shutdownvoltage (unload) .. . . . . . . . . . . . 9.2V – 9.8V
Operatingtemperature range .. . . . . . . . . . . 0°C –40°C
(32°F– 104°F)
Storagetemperature range . . . . . . . . . . . . -40°C– 85°C
(-40°F– 185°F)
Protection . . . . . . . . . .Overload, short-circuit, overtemp,
reversepolarity, under/over voltage
Notes
Allprotection is automatically recovered.
Toprotect the battery, if the unit needs to be restarted
afterlow voltage protection, the voltage of DC input
shouldbe above 12V.
Toextend the life of the fan, it will stop when there is no
load.The speed of the fan increases as the load increases.
Theunit is completely insulated in input and output for
addedsafety.
18 English
TroubleshootingGuide
Operation
Problem/Symptom
Lowoutput voltage
Nooutput voltage
Nooutputvoltage
afterprolongeduse
Nooutputvoltage,
“Protect”indicator
lighted
Nooutput voltage
Nooutput voltage
Lowbattery alarm
onall the time
PossibleCauses
Overload
Lowinput voltage
Thermal
shutdown
Highinput
voltage
Shortcircuit
Inverter
switchedoff
Nopower
toinverter
Reverse
DCpolarity
PoorDC wiring
Poorbattery
condition
Solution
Reducethe load.
Rechargebattery.
Checkconnections
andcable.
Allowinverter
tocool off.
Reduceload,
continuous
operationinput
currentrequired.
Improveventilation;
Makesureventilation
openingsin the
inverterare not
obstructed.
Reduceambient
temperature.
Makesure
theinverter is
connectedto
12Vbattery.
Checkregulation
ofchargingsystem.
Checkload for
properoperation.
Turninverter on.
Checkwiring
toinverter.
Observe
correctpolarity.
Check
connections.
Makesure battery
isfully charged.
TroubleshootingGuide
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