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CustomerAssistance
A1
OurThankstoYou
Introduction
ThankyouforpurchasingtheCobraCPI1000
inverter.Properlyused,thisCobraproduct
willgiveyoumanyyearsofreliableservice.
HowYourCobraPowerInverterWorks
The Cobra power inverter is an electronic product that has
been designed and built to take low voltage DC (Direct
Current) power from your automobile or other low voltage
power supplies and convert it to standard 115 volt AC
(Alternating Current) power like the current you have in
your home. This conversion process thereby allows you
to use many of your household appliances and electronic
products in automobiles, RVs, boats, tractors, trucks and
virtually anywhere else.
CustomerAssistance
Should you encounter any problems with this product,
or not understand its many features, please refer to this
owner’s manual. If you require further assistance after
reading this manual, Cobra Electronics offers the
following customer assistance services:
ForAssistanceintheU.S.A.
Automated Help Desk English only.
24 hours a day, 7 days a week 773-889-3087 (phone).
Customer Assistance Operators English and Spanish.
8:00 a.m. to 5:30 p.m. CT, Monday through Friday
(except holidays) 773-889-3087 (phone).
Questions English and Spanish.
Faxes can be received at 773-622-2269 (fax).
Technical Assistance English only.
www.cobra.com (on-line: Frequently Asked Questions).
English and Spanish. productinfo@cobra.com (e-mail).
ForAssistanceOutsidetheU.S.A.
Contact Your Local Dealer
©2011 Cobra Electronics Corporation
6500 West Cortland Street
Chicago, Illinois 60707 USA
www.cobra.com
Operating Instructions
Nothing Comes Close To A Cobra
1000 WATT POWER INVERTER
CPI 1000
Printed in China
Part No. 480-399-P
Version E
Nothing Comes Close to a Cobra
®
For more information or to
order any of our products,
please visit our website:
www.cobra.com
TheCobralineofquality
productsincludes:
CB Radios
microTALK
®
Radios
Radar/Laser Detectors
Safety Alert
®
Traffic Warning Systems
Truck-Specific Navigation Systems
HighGear
®
Accessories
CobraMarine VHF Radios
Power Inverters
LED Lights
Jumpstarters
Accessories
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 1
25
NothingComes Close to a Cobra
A3A2
ProductFeatures
Introduction
Introduction
PowerButton
Remote
On/Off
Switch
Jack
ACOutlets
PositiveBattery
CableTerminal
(Red)
NegativeBattery
CableTerminal
(Black)
CoolingFan
Contents
Introduction
Our Thanks to You . . . . . . . . . . . . . . . . . . A1
Customer Assistance . . . . . . . . . . . . . . . . A1
Product Features . . . . . . . . . . . . . . . . . . . A2
Important Safety Information . . . . . . . . . . . 1
Quick Evaluation Before Installation . . . . . . .4
Installation
Installation Requirements . . . . . . . . . . . . . . 6
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting Cables . . . . . . . . . . . . . . . . . . . 8
Power Consumption . . . . . . . . . . . . . . . . . 12
Ground Wiring . . . . . . . . . . . . . . . . . . . . . 13
Operation
Turning Your Inverter On or Off . . . . . . . . 14
Remote On/Off Switch . . . . . . . . . . . . . . . 15
Operating Indicators . . . . . . . . . . . . . . . . . 16
Operating Limits . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting Guide . . . . . . . . . . . . . . . 20
Specifications . . . . . . . . . . . . . . . . . . . . . . 21
Warranty
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . 22
CustomerAssistance
Maintenance . . . . . . . . . . . . . . . . . . . . . . . .23
Product Service . . . . . . . . . . . . . . . . . . . . 23
Accessories Order Info . . . . . . . . . . . . . . . 24
Features:
• Two AC Receptacles
• Voltage & Power Meter
• Remote On/Off Capable
• Automatic Thermal
Protection/Shutdown
• Reverse Polarity
Protection
• Low Battery Alarm
• Low Battery Shutdown
VoltageInput&
PowerOutput
Indicators
USBOutlet
Chassis
Ground
Terminal
OutputEnd
InputEnd
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 4
1
NothingComes Close to a Cobra
Introduction
ImportantSafetyInformation
Important Safety Information
Before installing and using your Cobra power inverter,
please read these general precautions and warnings.
CautionandWarningStatements
To make the most of this inverter, it must be installed
and used properly. Please read the installation and
operating instructions carefully before installing and
using it. Special attention must be paid to the CAUTION
and WARNING statements in the manual.
CAUTION Statements specify conditions which
could cause damage to the unit or other equipment.
WARNING Statements identify conditions that
could result in personal injury or loss of life.
GeneralPrecautions
1. Never install the inverter in a boats engine compartment
where gas and battery fumes are present.
2. Do not operate the inverter if it has been dropped
or damaged in any way.
3. Do not open the inverter; it contains no user-
serviceable parts. Attempting to service unit
could cause electrical shock.
NOTE Internal components remain
charged after all power is disconnected.
4. Do not expose the inverter to rain, snow,
bilge water or spray.
5. Do not obstruct the ventilation openings.
6. Do not install the inverter in zero-clearance
compartment.
CAUTION This inverter should be used in
negative ground applications only.
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 1
3
NothingComes Close to a Cobra
2
ImportantSafetyInformation
Introduction
WARNING Power inverters contain components
that tend to produce arcs or sparks. To prevent
fire or explosion, do not install the inverter in
areas or compartments containing batteries or
flammable materials or in locations that require
ignition-protected equipment.
WARNING To reduce the risk of fire, do not cover
or obstruct the ventilation openings. Do not install
inverter in zero-clearance compartment.
Caution:RechargeableAppliances
Certain chargers for small nickel cadmium batteries
can be damaged if connected to the Cobra 1000 watt
inverter. Two particular types of equipment are
prone to this problem:
1. Small battery-operated appliances
such as flashlights, razors, and
night lights that can be plugged
directly into an AC receptacle to
recharge.
2. Certain battery chargers for
battery packs used in hand
power tools. These chargers have
a WARNING label stating that
dangerous voltages are present
at the battery terminals.
This problem does not occur with the vast majority of
battery operated equipment. Most use a separate charger
or transformer that is plugged into the AC receptacle and
produces a low voltage output. If the label on the AC
adapter or charger states that it produces a low voltage
AC or DC output (less than 30 volts), the inverter will
have no problem powering the adapter safely.
Cobra1000WattOutputWaveform
Some very sensitive electronic equipment may not operate
satisfactory on “square wave” or “modified sine wave.”
The output waveform is referred to as “square wave” or
“modified sine wave.” It is a stepped waveform designed
to have characteristics similar to the sine wave shape of
utility power.
A waveform of this nature is suitable for most AC loads
(including linear and switching power suppliers used in
electronic equipment, transformers and motors).
ImportantSafetyInformation
Introduction
PlugInDirectly
DangerousVoltages
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 2
5
NothingComes Close to a Cobra
4
QuickEvaluation
BeforeInstallation
Introduction
QuickEvaluation
BeforeInstallation
Introduction
Quick Evaluation Before Installation
This section provides you with basic information about the
inverter and how to check its performance before installation.
Be sure to have on hand:
1. A 12 volt DC power source (such as a vehicle battery).
The power source must provide
between 11 and 15 volts DC and
be able to supply enough current to
run the test load. As a rough guide,
divide the wattage of the test load by
10 to get the current (in amperes)
the power source must deliver.
2. Cables to connect the power source to the inverter.
Cables are supplied with the unit that are two feet
long overall from the tip of the clamp shown to the
stripped and tinned end for insertion in the Input
End of the unit.
If user supplied cables are to be used, they must be
as short and thick as possible in order to reduce the
voltage drop between the power source and the inverter
when it is drawing current from the power source.
If the cable suffers an excessive voltage drop, the inverter
may shut down when drawing higher currents because
the voltage at the inverter dropped below 10 volts.
3. A test load that can be plugged into the AC receptacle on
the inverter for short term testing at a low power level.
The following cables are recommended for testing low
power level test loads only.
Test Load Minimum
Power Cable Size
100W # 16 AWG copper
250W # 12 AWG copper
500W # 8 AWG copper
PowerSource
To check your inverters performance before installation:
1. Turn the inverter off (see page 14
for details). If the power source is
a DC power supply, switch it off
as well.
2. Connect cables to power input
terminals (see page 8 for details).
3. Connect cables to power source
(see page 8 for details).
4. Check to make sure all
connections are secure.
5. Turn the inverter on. If the power
source is a DC power supply,
switch it on first.
6. Plug in the test load.
The inverter should supply power
to the load. If the inverter is not
working properly, refer to the
troubleshooting guide on page 20
or power and protection indicators
section on page 16.
NOTE A USB device can be
used to check the output
of the USB Outlet.
TestLoad
PowerButton
ConnectTerminals
PowerButton
ConnectTestLoad
USBOutlet
ConnectPowerSource
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 4
7
NothingComes Close to a Cobra
6
Mounting
Installation Requirements
The inverter must be installed in an area that meets all
of the following requirements:
A. Dry
Do not place in an area where water can drip
or splash on the inverter.
B. Cool
Ambient air temperature should be between 30°F
and 105°F (0°C and 40°C). The cooler the better.
C. Ventilate
Allow at least one inch (three cm) of clearance around
the inverter for proper airflow. Make sure that ventilation
openings on the ends of the unit are not obstructed.
D. Safe
Do not install the inverter in the same compartment
as a battery or in any compartment that contains
flammable liquids such as gasoline.
E. Close to Battery
Install unit as close to battery as possible (without
being in the same compartment) to minimize the
length of cable required to connect the inverter to
the battery. It is better and cheaper to run longer
AC wires than longer DC wires (cables).
CAUTION To avoid fire, do not cover or
obstruct ventilation openings. Do not install
inverter in a zero-clearance compartment.
Overheating may result.
CAUTION The inverter must only be connected to
batteries with a nominal output voltage of 12 volts.
It will not work with a 6 volt battery, and will be
damaged if it is connected to a 16 volt battery.
WARNING This unit contains components
which can produce arcs or sparks. To prevent
fire or explosion, do not install in compartments
containing a battery or flammable materials,
or in a location which requires ignition
protected equipment.
WARNING This unit is suitable for installation
in negative ground applications only. Do not
attempt to install to a positive ground application.
Mounting
To mount your inverter:
1. Place the inverter on a flat surface with the
mounting bracket against the mounting surface.
2. Mount to secure surface using mounting hardware
that is corrosion resistant (not included).
The inverter can be mounted horizontally or vertically.
If mounted vertically, neither end of the unit should be at
the top (to avoid foreign material from falling or settling
into the unit).
Installation
Installation
Requirements
Installation
MountingHardware
MountingBrackets
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 6
9
NothingComes Close to a Cobra
8
Connecting Cables (included)
Power wire and wiring are very important to the
performance of the inverter. Because the inverter has a
low voltage, high current input, low resistance wiring is
essential between the battery and inverter. This is so it
can deliver the maximum amount of energy to the load.
Keep the cable length as short as possible, no more than
four feet (one and a half meters). This will keep the voltage
drop to a minimum.
If the cable has too much voltage drop, the inverter may
shut down when drawing higher currents because voltage
at the inverter may drop below 10 volts. If you must use
longer cables, choose thicker cables, such as #2 AWG,
and trim the ends of the cable to fit the terminals.
To connect the cables between the
inverter and the battery:
1. Press the Power Button on the inverter to the off
position. If the power source is a DC power supply,
switch it off as well.
2. Connect cable to the Power Input Terminals on input
end of the inverter. The red terminal is positive (+) and
the black terminal is negative (-). Insert the bare ends
of the cables into the terminals and tighten the screws
to clamp the wires securely.
It is a good idea to check and tighten these screws
from time to time. They can become loose by
vibrations or thermal cycling.
3. Connect cables to the power source:
a. Connect the cable from the Negative (Black)
Terminal of inverter to the Negative Terminal
of the power source. Make a secure connection.
ConnectingCables ConnectingCables
Installation
Installation
PowerButton
InsertBareCables
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 8
CAUTION We recommend a main fuse in the
battery’s positive cable to protect against DC
wiring short circuits (external to the inverter).
The fuse should be as close to the battery as
possible. We recommend a Buss Fuse ANL-250
or equivalent. The specific fuse ampere rating
should be sized to allow operation of all your
DC powered equipment.
CAUTION Remove any jewelry (watch, ring, etc.).
Be careful not to short circuit the battery with any
metallic object (wrench, etc.).
WARNING If you are making a permanent AC
connection to the inverter, make sure that the AC
wiring steps are performed before any DC wiring is
done. (DC hook-up energizes internal components,
regardless of the position of the On/Off Switch).
Working on AC connections in such a circumstance
may result in an electric shock.
WARNING 115 volt AC power is potentially lethal.
Do not work on AC wiring when it is connected to
the inverter (even if it is switched off) unless the
DC power source is physically disconnected from
the inverter. Also, do not work on AC wiring if it
is connected to another AC power source such
as a generator or the utility line.
WARNING You may observe a spark when
making the connection because current can
flow to charge the capacitors in the inverter.
Do not make this connection in the presence
of flammable fumes. Explosion or fire may
result. Thoroughly ventilate the battery
compartment before making this connection.
b. Connect the cable from the Positive (Red) Terminal
of the inverter to the Positive Terminal of the power
source (the battery’s main fuse or the battery selector
switch, if you are using one). Make a secure connection.
You might observe a spark when you make this connection
since current can flow to charge capacitors in the inverter.
All power connections to your Cobra inverter must
be Positive to Positive and Negative to Negative.
CAUTION Electrical installations must meet
local and national wiring codes, and should be
performed by a qualified electrician.
CAUTION Do not connect the inverter and another
AC source (such as a generator or utility power)
to the AC wiring at the same time. The inverter
will be damaged if its output is connected to AC
voltage from another source. Damage can even
occur if the inverter is switched off.
CAUTION Do not connect the inverter to an AC
branch circuit that has high-power consumption
loads. It will not operate electric heaters, air
conditioners, stoves, and other electrical
appliances that consume more than 1000 watts.
CAUTION Loose connectors result in excessive
voltage drop and may cause over heated wires
and melted insulation.
CAUTION Reverse polarity connections (positive
to negative) will blow internal fuses in the inverter
and may permanently damage the unit. Such damage
is not covered by the warranty.
11
NothingComes Close to a Cobra
10
ConnectCables
ConnectingCables ConnectingCables
Installation
Installation
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 10
13
NothingComes Close to a Cobra
12
Power Consumption
For each piece of equipment you will be operating from
the inverter, you must determine the batterys reserve
capacity (how long the battery can deliver a specific amount
of current – in automotive batteries, usually 25 ampere) or
ampere-hour capacity (a measure of how many amperes a
battery can deliver for a specified length of time).
Example – Reserve capacity: a battery with a reserve
capacity of 180 minutes can deliver 25 ampere for 180
minutes before it is completely discharged.
Example – Ampere-hour capacity: a battery with an
ampere-hour capacity of 100 ampere-hours can deliver
5 ampere for 20 hours before it is completely discharged.
To determine the battery ampere-hour
capacity you require:
1. Determine how many watts each piece of equipment
consumes. This can normally be found on the product
label. If only the current draw is given, multiply the
current draw by 115 to get the watt consumption.
2. Estimate the time (in hours) that each piece of equipment
will be running between battery charging cycles.
3. Calculate the total watt-hours of energy consumption
(power x operating time) using the average power
consumption and the total estimated running time
(in hours). Power x Operating Time = Watt-Hours.
4. Divide the watt-hours by 10 to determine how many
battery (12 volt) ampere-hours will be consumed.
Ground Wiring
There is a screw on the rear panel for Chassis Ground.
This is to connect the chassis of the inverter to ground.
The Chassis Ground Screw must be connected to a
grounding point, which will vary depending on where
the unit is installed. Use a #8 AWG copper wire
(preferably with green/yellow insulation) to connect
the chassis ground screw to the grounding point.
In a vehicle: Connect the Chassis Ground to the chassis
of the vehicle.
In a boat: Connect to the Boat Grounding System.
In a fixed location: Connect the Chassis Ground Screw
to earth ground by connecting to a ground rod (a metal
rod pounded into the earth) or other proper service
entrance ground.
PowerConsumption GroundWiring
Installation
Installation
ChassisGround
Laptop
100 watts x 2 hours
= 200 watt-hours
TV/VCR(upto25")
115 watts x 3 hours
= 345 watt-hours
Blender
300 watts x 15 minutes
= 75 watt-hours
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 12
15
NothingComes Close to a Cobra
14
Turning Your Inverter On or Off
Be sure to have your power inverter properly installed
before attempting to turn the unit on (see installation
page 6).
To turn the power inverter on:
1. If a DC power supply is being used as the power
source, switch it on.
2. On the Output End, press the Power Button to on.
The inverter is now ready to deliver AC power to your loads.
If several loads are to be operated by the inverter, turn
them on separately, after the inverter has been turned on.
This will ensure that the inverter does not have to deliver
the starting currents required for all the loads at once.
NOTE The Power Button turns the control circuit
in the inverter on and off. It does not disconnect
power from the inverter.
When the button is in the off position, the inverter
draws no current from the battery. When it’s in the
on position, but no power is being supplied to a
load, the inverter draws less than 500 milliamperes
from the battery. This is low current draw. It would
take more than a week to discharge a 100 ampere-
hour battery at this rate depending on the age of
the battery.
Remote On/Off Switch
An optional Remote On/Off Switch (see page 24 to order
accessories) can be connected to the Remote Jack
allowing you to turn the Cobra power inverter on or off
from a convenient location when the inverter is installed
in an out of reach location.
PowerOnandOff
Operation
RemoteOn/OffSwitch
Operation
PowerButton
RemoteSwitch
RemoteJack
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 14
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NothingComes Close to a Cobra
16
OperatingIndicators
Operation
OperatingIndicators
Operation
Operating Indicators
Indicators at the Output End of the unit show the unit’s
power status and alarms for conditions that could cause
it to shut down.
Power on The Voltage Input
and Power Output indicators
automatically toggle between input
and output values at three-second
intervals. The three LEDs indicate
the mode the meter is in and the
three digits indicate the voltage
or power value.
Current Overload Protection
If the inverter is overloaded,
it will shut down to protect itself.
The meter will flash as shown to
indicate Overload Protect.
To restore normal operation,
disconnect the excessive load
and turn the unit Off and On
again using the Power Button.
Short Circuit Protection If the
AC output of the inverter is short-
circuited for one second or more,
it will shut down to protect itself.
The meter will flash as shown to
indicate Short Circuit Protect and
an alarm will sound.
To restore normal operation,
disconnect the short circuit and
turn the unit Off and On again
using the Power Button.
Low Voltage Protection – If the
DC input voltage drops below
the alarm threshold of 11.3V the
meter will flash as shown to
indicate Low Voltage Protection,
but the unit will continue to
operate. If the input voltage drops
to 10.0V or less, the inverter will
shut down to protect itself, the
meter will continue to flash as
shown, and an alarm will sound.
To restore normal operation, return
the DC input voltage to at least
12V. The inverter will automatically
return to normal operation.
High Voltage Protection – If the
DC input voltage rises above 15.0V,
the inverter will shut down to protect
itself, the meter will flash as shown
to indicate Over Voltage Protection,
and an alarm will sound.
To restore normal operation, return
the DC input voltage to less than
15V. The inverter will automatically
return to normal operation.
HighVoltage
OverCurrent
ShortCircuit
LowVoltage
OutputWatts
10274_CPI1000_vD:CPI1550-Eng 6/27/11 12:08 PM Page 16
1

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