Cobra Electronics CPI 2550 - Manual (Page 11)

17 Nothing Comes Close to a Cobra ® 16 English
Power and Protection
Indicators
Operation
Operating Limits
Operation
Power and Protection Indicators
•
The power and protection indicators include a green light, a
red light, an alarm and a current meter.
Green Light
Power on – The green light should remain on steady.
Red Light and/or Alarm
Current overload – The red light will turn on momentarily, 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 red light will turn
on. The inverter will continue to check for appropriate voltage
levels while trying to restart the load.
Temperature overload – The red light will turn on
momentarily, then the inverter will shutdown. The inverter will
continue to check for appropriate temperature levels and the
red light will continue to blink 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.
Current Meter
The current meter indicates the
current drawn from the battery.
It will not indicate the current
drawn by other loads also connected
to the battery.
For long term operation, the
current meter should remain in
the middle of the bar graph.
Operating Limits
•
Power Output
The inverter can deliver 2500 watts for about 60 minutes. The
inverter must cool for 15 minutes before it can resume
operation at 2500 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
15.75V+/-0.75V. 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.
No Plugs at 0%
One Plug at 40%