Operating Indicators; Operating Limits - Cobra POWER 500W Owner's Manual

OPERATING INDICATORS

Indicators on the power inverter show the unit's power status and alarms for conditions that could cause it to
shut down. The power and protection indicator includes a dual color green and red light, and an alarm.
Green Light
Power on – The green light should remain on steady.
Red Light and/or Alarm
Current overload – The red light will blink continuously, then the inverter will shutdown. The inverter will
continue to check for appropriate current levels while trying to restart the load.
DC input voltage overload – The red light will turn on and the inverter will shutdown. The inverter will
continue to check for appropriate voltage levels while trying to restart the load.
DC input voltage shortage – As a warning that the voltage is getting low, the internal alarm will sound. When
the voltage is too low, the inverter will shutdown and the light will turn red. The inverter will continue to
check for appropriate voltage levels while trying to restart the load.
Temperature overload – The red light will blink, then the inverter will shutdown. The inverter will continue to
check for appropriate temperature levels while trying to restart the load.
NOTE: A momentary sound of the internal alarm and/or flash of the red light is normal at start up.

OPERATING LIMITS

Power Output
The inverter can deliver 500 watts for about 60 minutes. The inverter must cool for 15 minutes before it can
resume operation at 500 watts. Note: The wattage rating applies to resistive loads.
The inverter will operate most AC loads within its power rating. Some induction motors used in freezers,
pumps, and other motor-operated equipment require very high surge currents to start. The inverter may not
be able to start some of these motors even though their rated current draw is within the inverter's limits. The
inverter will normally start single phase induction motors rated at one-half HP or less.
Input Voltage
The inverter will operate from input voltage ranging from 10 volts to 15 volts. Optimum performance will
occur when the voltage is between 12 volts and 14 volts. If the voltage drops below 10.5V+/-0.3V, an audible
low battery warning will sound. The inverter will shut down if the input voltage drops below 9.5V+/-0.3V. This
protects the battery from being over-discharged. It will restart when the input voltage exceeds 12V+/-0.3V.
The inverter will also shut down if the input voltage exceeds change to 15.5V+/-0.5V. This protects the
inverter against excessive input voltage. Although the inverter has protection against over-voltage, it may still
be damaged if the input voltage were to exceed 16 volts.
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