Cobra Electronics CPI 2550 Power Supply User Manual
Contents
1. The Cobra line of quality products includes CB Radios microTALK Radios Radar Laser Detectors Safety Alert Traffic Warning Systems Handheld GPS Receivers Mobile GPS Navigation Systems HighGear Accessories CobraMarine VHF Radios Power Inverters Accessories For more information or to order any of our products please visit our website www cobra com Nothing comes close to a Cobra English C obra Operating Instructions 2500 WATT POWER INVERTER Printed in China Part No 480 200 P Version A Nothing comes close to a Cobra English Oe bank Thank you for purchasing the Cobra CPI 2550 inverter Properly used this Cobra product will give you many years of reliable service How Your Cobra Power Inverter Works 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 e Customer Assistance Introduction Customer Assistance Should you encounter any problems with this product or not understand its many features please refer to this owner s manual If you requir2. Working on AC connections in such a circumstance may result in an electric shock Chassis Ground 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 NOTE If only one power source is used connect both TVNCR up to 25 Blender 50 watts x 2 hours 115 watts x 3 hours 300 watts x 15 minutes 100 watt hours 345 watt hours 75 watt hours cables from the negative terminal of the inverter to the negative terminal of the power source Then connect both cables from the positive terminals of the inverter fiz English Nothing comes close to a Cobra Operation Power Consumption For each piece of equipment you will be operating from the inverter you must determine the battery s 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 am
3. and may cause over heated wires a Connect each cable from the Negative Black and melted insulation Terminals of inverter to the Negative Terminal of the power source Make a secure connection CAUTION Reverse polarity connections positive to negative will blow internal fuses in the inverter b Connect each cable from the Positive Red _ and may permanently damage the unit Such damage Terminals of the inverter to the Positive Terminal is not covered by the warranty of the power source the battery s main fuse or the battery selector switch if you are using one CAUTION We recommend a main fuse in the Make a secure connection 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 fiol English Nothing comes close to a Cobra Installation Installation metallic object wrench etc to the positive terminal of the power source 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
4. fans are free of dust or debris Product Service e If you have any questions about operation or installing your new Cobra product or if you are missing parts Please call Cobra first DO NOT RETURN THIS PRODUCT TO THE STORE See customer assistance on page A1 If your product should require factory service please call Cobra first before sending your power inverter This will ensure the fastest turn around time on your repair You may be asked to send your power inverter to the Cobra factory It will be necessary to furnish the following to have the product serviced and returned 1 For warranty repair include some form of proof of purchase Such as a mechanical reproduction or carbon copy of a sales receipt If you send the original receipt it cannot be returned Send the entire product Enclose a description of what is happening with the power inverter Include a typed or clearly printed name and address of where the power inverter is to be returned Pack power inverter securely to prevent damage in transit If possible use the original packing material Ship prepaid and insured by way of a traceable carrier such as United Parcel Service UPS or Priority Mail to avoid loss in transit to Cobra Factory Service Cobra Electronics Corporation 6500 West Cortland Street Chicago Illinois 60707 USA If the power inverter is in warranty upon receipt of your power inverter it will either be repaired or exchange
5. bstructed Reduce ambient temperature No output voltage High input Make sure Protect indicator voltage the inverter is lighted connected to 12V battery Check regulation of charging system No output voltage Short circuit Check load for proper operation No output voltage Inverter Turn inverter on switched off No power Check wiring to inverter to inverter Reverse Observe DC polarity correct polarity Low battery alarm Poor DC wiring Check on all the time connections Poor battery Make sure battery condition is fully charged English Operation Specifications Continuous output power 1 hour 2500W Surge rating 0 1 second 5000W Peak efficiency 12V 1 2 load gt 88 Efficiency full load 12V 000 gt 83 No load current draw lt 0 5A 12 6V Output waveform resistive load Modified sine wave Output frequency 0 58HZ 62HZ Output voltage 109V 120V Input voltage 10 4VDC 14 4VDC Alarm voltage unload 10 2V 10 8V Shutdown voltage unload 9 2V 9 8V Operating temperature range 0 C 40 C 32 F 104 F Storage temperature range 40 C 85 C 40 F 185 F Protection Overload short circuit overtemp reverse polarity under over voltage Notes All protection is automatically recove
6. d depending on the model Please allow approximately three to four weeks before contacting Cobra for status If the power inverter is out of warranty a letter will automatically be sent informing you of the repair charge or replacement charge wo N gt cn c Nothing comes close to a Cobra Remote On Off An optional Remote On Off Switch can be SSE connected to the Remote Jack allowing you to em turn the Cobra CPI 2550 inverter on or off from a convenient location when the inverter is installed in an out of reach location Name Address No P O Boxes City State Province Zip Country Telephone Credit Card Number Type OVisa O Mastercard O Discover Exp Date Customer Signature Item U S Cost Each Qty Amount Amount Shipping Handling Tax Table x US Subtotal 10 00 or less 3 00 finos i ge Tax if Applicable 10 01 25 00 5 50 Shipping Handling 25 01 50 00 7 50 6 Total Wisconsin 5 50 01 90 00 10 50 For AK HI and PR add additional 26 95 for 90 01 130 00 51350 FedEx Next Day or 10 95 for FedEx 2nd Day 130 01 200 00 16 50 Excludes weekend and holiday shipments 200 01 plus 10 of Please allow two to three weeks for delivery in purchase the U S Prices subject to change without notice Qptional Accessories You can find quality Cobra products and accessories at your local Cob
7. e further assistance after reading this manual Cobra Electronics offers the following customer assistance services For Assistance in the U 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 6 00 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 productinfoecobra com e mail For Assistance Outside the U S A Contact Your Local Dealer 2005 Cobra Electronics Corporation 6500 West Cortland Street Za 7 Chicago Illinois 60707 USA English www cobra com Introduction Features Three AC Receptacles Current Meter Reverse Polarity Protection Low Battery Alarm Remote On Off Capable Low Battery Shutdown Automatic Thermal Protection Shutdown Power amp Protection Indicators AC Outlets On Off Power O Switch Current Remote Meter On Off Switch Jack Negative Battery Cable Terminals Cooling Fans Black Positive Battery Cable Terminals Ground Red Terminal POPPE EERE Introduction e faa English Introduction Our Thanks to You A1 Customer Assistance Al Product Features A2 Important Safe
8. ers 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 Plug In Directly Dangerous Voltages YF la f English Cobra 2500 Watt Output Waveform 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 D Nothing comes close to a Cobra ar 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 md power source such as a vehicle battery Power Supply The power source must provide between 11 and 15 volts DC and be able to supply enough current to run the test
9. 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 A set of cables to connect the power source to the inverter not included The cables must be as short and thick as possible in order to reduce the voltage drop between the power source and the inverter when 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 4 AWG stranded copper cable is recommended It should be no longer than four feet one and one half meters The end of the cable that connects to the inverter must have its insulation stripped off for about one half inch one and one half cm back from the end exposing the bare Copper The other end of the cable which connects to the power source must be terminated with a lug or other connector that provides a secure low resistance connection For example if the power source is a battery the cable must be terminated with a battery terminal that clamps to the post on the battery 4 English Introduction Test Load b Connect Power Source Sw We On Off Switch to On Nothing comes close to a Cobra 8 r Installation O Regui Installation Installation A test load that can be plugged into the AC receptacle on the inverter for short term testing a
10. peres a battery can deliver for a specified length of time On Off Switch to On z To de SUOMI 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 fia English Operation 9 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 Remote Switch 3m Nothing comes close to a Cobra Power and Protection S Operation 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 left side panel switch the On Off Switch 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 doe
11. ra dealer or in the U S A you can order directly from Cobra Ordering from U S A Call 773 889 3087 for pricing or visit www cobra com For credit card orders complete and return this order form to fax number 773 622 2269 Or call 773 889 3087 Press 1 from the main menu 8 00 a m to 6 00 p m CT Monday through Friday Make check or money order payable to Cobra Electronics Attn Accessories Dept 6500 West Cortland Street Chicago IL 60707 USA To order online please visit our website www cobra com f2 English Nothing comes close to a Cobra fa English Nothing comes close to a Cobra 25
12. red To protect the battery if the unit needs to be restarted after low voltage protection the voltage of DC input should be above 12V To extend the life of the fan it will stop when there is no load The speed of the fan increases as the load increases The unit is completely insulated in input and output for added safety Nothing comes close to a Cobra amp Maintenance and Customer Assistance Limited Two Year Warranty For Products Purchased in the U S A Cobra Electronics Corporation warrants that its Cobra power inverter and the component parts thereof will be free of defects in workmanship and materials for a period of two years from the date of first consumer purchase This warranty may be enforced by the first consumer purchaser provided that the product is utilized within the U S A Cobra will without charge repair or replace at its option defective power inverters products or component parts upon delivery to the Cobra Factory Service department accompanied by proof of the date of first consumer purchase such as a duplicated copy of a sales receipt You must pay any initial shipping charges required to ship the product for warranty service but the return charges will be at Cobra s expense if the product is repaired or replaced under warranty This warranty gives you specific legal rights and you may also have other rights which may vary from state to state Exclusions This limited warran
13. s not have to deliver the starting currents required for all the loads at once To turn the power inverter off 1 On the left side panel switch the On Off Switch to off Operation NOTE The On Off Switch turns the control circuit in the inverter on and off It does not disconnect power from the inverter When the switch 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 the 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 not included An optional Remote On Off Switch not included 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 Nothing comes close to a Cobra Operation Troubleshooting Guide Problem Symptom Possible Causes Low output voltage Overload Solution Reduce the load No output voltage Low input voltage Recharge battery Check connections and cable No output voltage Thermal Allow inverter after prolonged use shutdown to cool off Reduce load continuous operation input current required Improve ventilation Make sure ventilation openings in the inverter are not o
14. t 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 To check your inverter s 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 I 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 18 or power and protection indicators section on page 16 fe English Ipftallation Requirements e 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 length of cable required to connect the inverter to the bat
15. tery It is better and cheaper to run longer AC wires than longer DC wires cables Mounting Hardware damaged if it is connected to a 16 volt battery D Nothing comes close to a Cobra Installation 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 On Off Switch to fs English Strip ppan Use only copper wire Aluminum wire has about one third more resistance than copper wire of the same size plus it is difficult to make good low resistance connections to aluminum wire We recommend two a AWG copper cables 90 C 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 Turn the On Off Switch on the inverter to the off position If the power source is a DC po
16. ty Information 1 Quick Evaluation Before Installation 4 Installation Installation Requirements 6 Mounting 2 ilc inh 7 Connecting Cables 8 Power Consumption 12 Ground Wiring 00008 13 Operation Turning Your Inverter On or Off 14 Remote On Off Switch 15 Power and Protection Indicators 16 Operating Limits 0 17 Troubleshooting Guide 18 Specifications escis 19 Warranty Warranty 0 00000 eee 20 Customer Assistance Maintenance 000 21 Product Service 000008 21 Accessories and Order Form 22 Introduction Important Safety Information Before installing and using your Cobra power inverter please read these general precautions and warnings Caution and Warning Statements 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 oaments in the manual CAUTION Statements specify conditions which could cause damage to the unit or other equipment A WARNING Statements identify conditions that could result in personal injury or loss of life General Precautions 1 Never install the inverter in a boat s engine compartment where gas and battery f
17. ty does not apply 1 To any product damaged by accident 2 In the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs 3 If the serial number has been altered defaced or removed 4 If the owner of the product resides outside the U S A All implied warranties including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty Cobra shall not be liable for any incidental consequential or other damages including without limitation to damages resulting from loss of use or cost of installation Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations may not apply to you For Products Purchased Outside the U S A Please contact your local dealer for warranty information Trademark Acknowledgement es Cobra Nothing comes close to a Cobra and the snake design are registered trademarks of Cobra Electronics Corporation USA Cobra Electronics Corporation is a palanan Cobra Electronics Coproration USA Maintenance e Very little maintenance is required to keep the inverter operating properly The exterior of the unit should be cleaned periodically with a damp cloth to prevent accumulation of dust and dirt At the same time tighten the screws on the DC input terminals Be sure vents and
18. umes 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 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 CAUTION This inverter should be used in negative ground applications only Nothing comes close to a Cobra 1 Introduction 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 Rechargeable Appliances Certain chargers for small nickel cadmium batteries can be damaged if connected to the Cobra 2500 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 charg
19. wer supply switch it off as well Connect Cables strip back the insulation about one half inch one and Nothing comes close to a Cobra 9 Installation d Installation one half cm exposing the bare copper conductor ight 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 I Positive to Positive and Negative to Negative CAUTION Electrical installations must meet local and national wiring codes and should f be performed by a qualified electrician 3 Connect cables to the Power Input Terminals on right side panel of the inverter The red terminals are positive CAUTION Do not connect the inverter and another and the black terminals are negative Insert the AC source such as a generator or utility power bare ends of the cables into the terminals and tighten to the AC wiring at the same time The inverter the screws to clamp the wires safely 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 2500 watts CAUTION Loose connectors result in excessive 4 Connect cables to the power source voltage drop
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