American Power Conversion 10000 VA Power Supply User Manual
Contents
1. han ed Su Sa Switch the UPS input circuit breaker see A in diagram and utility circuit breakers OFF Remove the input access panel see B in diagram Remove circular knockout Run appropriate size wire through the access panel and connect to the terminal block Green Ground Brown Hot Blue Neutral Connect the ground wire first Use appropriate strain reliefs not included For three phase input set the input phase selector switch see C in diagram to 3 For single phase input leave the switch in the default position of 1 Replace the access panel ee eena RROA _ eS EU EIEEE A Ka zi AION arya 7 CAAA Tan an Ven Tee le esse CIRCUIT BREAKERS Input Circuit Breaker The input circuit breaker must be switched on for the UPS to operate The input circuit breaker protects the UPS from extreme overload conditions 8000 10000 VA A A A Output Circuit Breakers IEC 320 C13 r A ie current IEC 320 C19 rom four 16 A for each receptacles receptacle BASIC CONNECTORS Serial Com Power management software and interface kits can be used with the UPS Use only interface kits supplied or approved by APC An2. Allow at least 24 hours for the batteries to fully charge prior to connecting equipment to the UPS 5 Configure the Network Management card Refer to the Network Management card user manual TERMINAL MODE TO CONFIGURE UPS PARAMETERS AND PROGRAM THE NUMBER OF BATTERY PACKS Terminal Mode is a menu driven interface that enables enhanced configuration of the UPS Connect the serial cable from the computer to the serial com connector on the back of the UPS Instructions for use with PowerChute Network Shutdown software 1 Open a terminal program Example HyperTerminal e From the Desktop go to Start gt Programs gt Accessories gt Communication gt HyperTerminal Double click on the HyperTerminal icon e Follow the prompts to choose a name and select an icon Disregard the message must install a modem if it is displayed Click OK e Select the COM port that is connected to your UPS The port settings are v bits per second 2400 data bits 8 parity none stop bit 1 flow control none e Press ENTER Example for setting the number of external battery packs Once the blank terminal window is open follow these steps to enter the number of battery packs e Press ENTER to initiate terminal mode Press ENTER multiple times until the prompt User Name is displayed Follow the prompts Type slowly waiting until each character appears on the screen prior to typing the next character v v v v Netwo
3. PRACTICES Always wear Goggles or face shields Acid resistant insulated gloves Protective aprons Protective overshoes or rubber boots Always Use Insulated tools Rubber mats to cover batteries during servicing Rubber mats or rubber stands on the floor Adequate lifting devices Remove Watches rings and other metal objects from your body PRECAUTIONS To avoid static build up service personnel should establish a grounding contact prior working on batteries e Do not lay tools or metal parts on top of batteries e Lead acid batteries contain hazardous toxic materials Do not open alter or mutilate batteries Internal materials may be harmful to the skin and eyes Do not dispose of batteries in a fire There is danger of explosion e Handle transport and recycle batteries in accordance with local codes and regulations APC BATTERY SOLUTION See the APC Web site www apc com or contact your APC dealer for information regarding the APC external battery pack THIRD PARTY BATTERY SOLUTION Batteries must be Sealed Lead Acid type Use 50 A 250 VDC fuses with an Interrupt rating of gt 20 000 A Ensure that the external batteries are wired prior to connecting the batteries to the UPS Two separate isolated 192 V battery systems are required when using a third party battery solution One cable assembly must be wired to each 192 V battery system Two cable assemblies are included with the UPS one for ea
4. loss of equipment loss of use of equipment loss of software loss of data costs of substitutes claims by third parties or otherwise 17 Declaration of Conformity A7C www apc com 2005 EC Declaration of Conformity Parsode We the undersigned declare under our sole responsibility that the equipment specified below conforms to the following standards and directives Harmonized Standards EN55022 EN62040 1 1 EN61000 3 2 3 3 4 2 4 3 4 4 4 5 4 6 4 8 4 11 EN60950 1 IEC60950 1 Applicable Council Directives 73 23 EEC 93 68 EEC Type of Equipment Uninterruptible Power Supply Model Numbers SURT8000XLI SURT8000UXI SURT10000XLI SURT10000UXI Manufacturers American Power Conversion American Power Conversion APC Suzhou UPS Co Ltd Ballybritt Business Park 2nd Street 339 Suhong Zhong Lu Galway Ireland PEZA Cavite Economic Zone Suzhou Industrial Park American Power Conversion Rosario Cavite Suzhou Jiangsu 215021 erican Power Conversio Philippines Age Breaffy Rd Castlebar j Co Mayo Ireland American Power Conversion APC Brazil LTDA Lot 10 Block 16 Phase 4 AL Xingu 850 American Power Conversion PEZA Rosario Cavite Barueri 132 Fairgrounds Rd Philippines Alphaville Sao Paulo West Kingston RI 02892 USA 06455 030 Brazil American Power Conversion American Power Conversion 1600 Division Rd Lot 3 Block 14 Phase 3 West Warwick RI 02892 USA PEZA Rosario Cavite Philippines Ameri
5. connected to the EPO Adhere to national and local electrical codes when wiring the EPO Wiring must be performed by a qualified electrician The switch should be connected to a normally open switch contact External voltage is not required the switch is driven by 12V internal supply In closed condition 2mA of current are drawn The EPO switch is internally powered by the UPS for use with non powered switch circuit breakers The EPO circuit is considered a Class 2 circuit UL CSA standards and a SELV circuit IEC standard Both Class 2 and SELV circuits must be isolated from all primary circuitry Do not connect any circuit to the EPO terminal block unless it can be confirmed that the circuit is Class 2 or SELV If circuit standard cannot be confirmed use a contact closure switch Use one of the following cable types to connect the UPS to the EPO switch e CL2 Class 2 cable for general use e CL2P Plenum cable for use in ducts plenums and other spaces used for environmental air e CL2R Riser cable for use in a vertical run in a floor to floor shaft e CLEX Limited use cable for use in dwellings and for use in raceways e For installation in Canada Use only CSA certified type ELC extra low voltage control cable e For installation in other countries Use standard low voltage cable in accordance with local regulations MAINTENANCE SERVICE Battery Repl
6. 230V 240V the UPS into the normal utility power 0256 0266 0276 e ee The UPS starts a self test as part of this procedure The self test does 0200 0210 0220 not affect the voltage display 0181 0192 0202 Ll CJ CI Press and hold the button to view the utility voltage bar graph display After a few seconds the five LED Battery Charge LD display on the right of the front panel shows the utility input voltage Refer to the figure at left for the voltage reading values are not listed on the UPS The display indicates the voltage is between the displayed value on the list and the next higher value BATTERY OPERATION The UPS switches to battery operation automatically if the utility power fails While running on battery an alarm beeps four times every 30 seconds Press the button to silence this alarm If the utility power does not return the UPS continues to supply power to the connected equipment until the battery is fully discharged When two minutes of run time remain the UPS emits a continuous beeping If PowerChute software or the Network Management card are not being used files must be manually saved and the computer must be turned off before the UPS fully discharges the battery The UPS battery life differs based on usage and environment Refer to www apc com for on battery runtimes USER CONFIGURABLE TEMS NOTE SETTINGS ARE MADE THROUGH SUPPLIED POWERCHUTE SOFTWARE SMART SLOT ACCESSORY CARDS OR TERMINAL M
7. Arc www ape com User Manual English APC Smart UPS RT UXI UXICH 8000 10000 VA 220 230 240 VAC Tower Rack Mount 6U Uninterruptible Power Supply 990 2687B 04 2006 Introduction The APC Smart UPS RT is a high performance uninterruptible power supply UPS that provides protection for electronic equipment from utility power blackouts brownouts sags and surges The UPS filters small utility line fluctuations and isolates electronic equipment from large disturbances by internally disconnecting from utility line power The UPS provides continuous power from the internal battery until utility power returns to safe levels or the battery is fully discharged INSTALLATION Read the Safety Instruction sheet before installing the UPS Unpacking Inspect the UPS upon receipt Notify the carrier and dealer if there is damage The packaging is recyclable save it for reuse or dispose of it properly Check the package contents UPS Front bezel Literature kit containing Software CD Smart UPS User Manuals CD Serial cable Six output power cords Two battery cable assemblies Two ground wires Product documentation warranty information and safety information Network Management Card documentation Specifications TEMPERATURE This unit is intended for OPERATING 32 to 104 F 0 to 40 C indoor use only Select a STORAGE 5 to 113 F 15 to 45 C charge UPS battery every six months locat
8. C UTILITY VOLTAGE All five LEDs are illuminated The line voltage is extremely high and should be checked by an electrician There is no LED illumination If the UPS is plugged into a properly functioning utility power outlet the line voltage is extremely low ONLINE LED There is no LED illumination The UPS is running on battery or it is not turned on The LED is blinking The UPS is running an internal self test 16 REGULATORY AND WARRANTY NFORMATION Regulatory Agency Approvals and Radio Frequency Warnings 220 230 240 V MODELS This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy If it is not installed and used in accordance with the instruction manual it may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case users will be required to take whatever measures may be necessary to correct the interference at their own expense CE CG BSMI 134031 ME 61 Bais EE HY AE i EEE SUE RRP gt TI RE X JR AR THE HRA gt RAR PER RRR LA EER o Limited Warranty America
9. ODE FACTORY USER SELECTABLE FUNCTION DESCRIPTION DEFAULT CHOICES Automatic Self Test Date of Last Battery Replacement Minimum Capacity Before Return from Shutdown Alarm Delay After Line Failure Shutdown Delay Duration of Low Battery Warning Synchronized Turn on Delay Every 14 days 336 hours UPS_IDEN Manufacture Date 5 second delay 2 minutes PowerChute software provides automatic unattended shutdown when approximately 2 minutes of battery operated runtime remains 0 seconds Every 7 days 168 hours 14 days 336 hours On Startup Only No Self Test Up to eight characters to define the UPS Date of Battery Replacement mm dd yy 0 15 25 35 50 60 75 90 percent 5 or 30 second delay At Low Battery Never 0 20 60 120 240 480 720 960 seconds 2 5 7 10 12 15 18 20 minutes 0 20 60 120 240 480 720 960 seconds 11 Set the interval at which the UPS will execute a self test Uniquely identify the UPS i e server name or location for network management purposes Reset this date when you replace the battery module Following a low battery shutdown the batteries will be charged to the specified percentage before powering connected equipment Mute ongoing alarms or disable all alarms permanently Set the interval between the time when the UPS receives a shutdown command and the actual shutdown The low battery warning beeps are c
10. acement See your dealer or contact APC at the Web site www apc com for information on replacement battery modules Service If the UPS requires service do not return it to the dealer Follow these steps 1 Review the problems discussed in the Troubleshooting section of this manual to eliminate common problems 2 Ifthe problem persists contact APC Customer Support through the APC Web site www apc com Note the model number of the UPS the serial number located on the back of the unit and the date purchased If you call APC Customer Support a technician will ask you to describe the problem and attempt to solve it over the phone If this is not possible the technician will issue a Returned Material Authorization Number RMA Ifthe UPS is under warranty repairs are free Procedures for servicing or returning products may vary internationally Refer to the APC Web site for country specific instructions 3 Pack the UPS in its original packaging If the original packing is not available refer to the APC Web site www apc com for information about obtaining a new set Pack the UPS properly to avoid damage in transit Never use Styrofoam beads for packaging Damage sustained in transit is not covered under warranty Always DISCONNECT THE BATTERY S before shipping in compliance with U S Department of Transportation DOT and IATA regulations 4 Mark the RMA on the outside of the package Return the UPS by insu
11. can Power Conversion 40 Catamore Blvd APC India Pvt Ltd East Providence RI 02914 USA 187 3 188 3 Jigani Industrial Area Jigani Bangalore 562106 Karnataka India American Power Conversion A P C b v Ballybritt Business Park Galway Ireland Galway Ireland Ray S Ballard Managing Director Europe Fe eh id hitik 5 Jan 05 Gs 18 APC Worldwide Customer Support Customer support for this or any other APC product is available at no charge in any of the following ways e Refer to the APC Web site to access documents in the APC Knowledge Base and to submit customer support requests e www apce com Corporate Headquarters Connect to localized APC Web sites for specific countries each of which provides customer support information e www apce com support Global support searching APC Knowledge Base and using e support e Contact an APC Customer Support center by telephone or e mail Local country specific centers go to www apc com support contact for information Contact the APC representative or other distributor from whom you purchased your APC product for information on how to obtain local customer support Entire contents copyright 2005 American Power Conversion Corporation All rights reserved Reproduction in whole or in part without permission is prohibited APC the APC logo Smart UPS and PowerChute are trademarks of American Power Conversion Corporation All other trademarks product names a
12. ch 192 V battery system Connect the Ground and Wire the Battery System 1 Connect the ground wires included to each battery enclosure ground and the TVSS screw on the back of the UPS 2 Cut off one of the connectors on each cable assembly revealing the positive and negative wires in each cable 3 Connect the positive red and negative black wires to the positive and negative terminals on each external battery system Ensure that the proper polarities are connected 4 Plug the cable connectors into the battery connector receptacles on the back of the UPS Ie Fuse N _ p DEDO o FiA eaa i _ 1 e I te Fp 192 V 192 V 7 O __ Battery N i z System 1 me grnd gt 5 3 ee b es St Q EEE I OOOO OADOOC OA fi ji 1 Battery 192 V 492vi System 2 9_J Q a grnd 5 4 CONNECT EQUIPMENT AND POWER TO THE UPS 1 Connect equipment to the UPS 2 Turn on all connected equipment To use the UPS as a master ON OFF switch ensure all connected equipment is switched ON The equipment will not be powered until the UPS is turned on 3 Switch the utility circuit breaker on 4 To power up the UPS press the button on the front panel The UPS battery charges when it is connected to utility power
13. cted equipment The connected equipment exceeds the specified maximum load as defined in Specifications on the APC Web site www apc com Disconnect nonessential equipment from the UPS to eliminate the overload condition Press the OFF button then the ON button to restore power to connected equipment FAULT LED ILLUMINATES Internal UPS fault Do not attempt to use the UPS Turn the UPS off and have it serviced immediately REPLACE BATTERY LED ILLUMINATES Replace Battery LED flashes and short beep is emitted every two seconds to indicate the battery is disconnected Weak battery Failure of a battery self test Check that the battery connectors are fully engaged Allow the battery to recharge for 24 hours Then perform a self test If the problem persists after recharging replace the battery The UPS emits short beeps for one minute and the Replace Battery LED illuminates The UPS repeats the alarm every five hours Perform the self test procedure after the battery has charged for 24 hours to confirm the Replace Battery condition The alarm stops and the LED clears if the battery passes the self test UPS OPERATES ON BATTERY ALTHOUGH LINE VOLTAGE EXISTS Very high low or distorted line voltage Inexpensive fuel powered generators can distort the voltage Move the UPS to a different outlet on a different circuit Test the input voltage with the utility voltage display DIAGNOSTI
14. ion sturdy enough to handle the weight Maximum ELEVATION Do not operate the UPS where OPERATING 10 000 ft 3 000 m there is excessive dust or the STORAGE 50 000 ft 15 000 m temperature and humidity are outside the specified limits HuMIDITY 0 to 95 relative humidity non condensing Ensure the air vents on the front and rear of the UPS are not blocked WEIGHT UPS 244 Ibs 111 kg UPS WITH 284 Ibs 129 kg PACKAGING ATTACH THE BEZEL TO THE UPS HARDWIRING INSTRUCTIONS Wiring must be performed by a qualified electrician Adhere to all national and local electrical codes Install a utility circuit breaker for input wiring see tables below 220 230 240 V MODELS Input Connections Output Connection optional Single Phase Wire to L1 N and e Three Phase Wire to L1 L2 L3 N and f _l_ Wire to LIA N1 and System Wiring Number Voltage Current External Input Wire of Full Load Circuit Breaker Size Phases Nominal Typical Typical SURT8000 Input 1 220 230 240 V 40A 50 A 2 pole 10mm Input 3 380 400 415 V 15 A phase when 50 A 4 pole 10mm Neutral online 40 A on L1 in bypass Output 1 220 230 240 V 40A not required 10mm SURT10000 Input 1 220 230 240 V 50 A 63 A 2 pole 16mm Input 3 380 400 415 V 18 A phase when 63 A 4 pole 16mm Neutral online 50 A on L1 in bypass Output 1 220 230 240 V 50 A not required 16mm
15. lt The UPS detects an internal fault xX Refer to Troubleshooting in this manual Overload An overload condition exists Refer to Troubleshooting in this manual Replace The battery is disconnected or must be replaced Refer to Troubleshooting in this Battery manual Feature Function Power On Press this button to turn on the UPS See below for additional capabilities Power Off Press this button to turn off the UPS Feature Function Normal Bypass TU Manual bypass enables the user to manually put connected equipment into bypass mode While in bypass mode the utility power bypasses the UPS and goes directly to the connected equipment Battery operation is not available while the UPS is in bypass mode Refer to Troubleshooting in this manual Cold Start This is not a normal condition When there is no utility power and the UPS is off press and hold the button to power up the UPS and connected equipment The UPS will emit two beeps During the second beep release the button Self Test Automatic The UPS performs a self test automatically when turned on and every two weeks thereafter by default During the self test the UPS briefly operates the connected equipment on battery Manual Press and hold the button for a few seconds to initiate the self test Diagnostic Utility Voltage The UPS has a diagnostic feature that displays the utility voltage Plug 220V
16. n Power Conversion APC warrants its products to be free from defects in materials and workmanship for a period of two years from the date of purchase Its obligation under this warranty is limited to repairing or replacing at its own sole option any such defective products To obtain service under warranty you must obtain a Returned Material Authorization RMA number from customer support Products must be returned with transportation charges prepaid and must be accompanied by a brief description of the problem encountered and proof of date and place of purchase This warranty does not apply to equipment that has been damaged by accident negligence or misapplication or has been altered or modified in any way This warranty applies only to the original purchaser who must have properly registered the product within 10 days of purchase EXCEPT AS PROVIDED HEREIN AMERICAN POWER CONVERSION MAKES NO WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Some states do not permit limitation or exclusion of implied warranties therefore the aforesaid limitation s or exclusion s may not apply to the purchaser EXCEPT AS PROVIDED ABOVE IN NO EVENT WILL APC BE LIABLE FOR DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS PRODUCT EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE Specifically APC is not liable for any costs such as lost profits or revenue
17. nd corporate names are the property of their respective owners and are used for informational purposes only 19
18. ontinuous when two minutes of run time remain Change the warning interval default to a higher setting if the operating system requires a longer interval for shutdown The UPS will wait the specified time after the return of utility power before turn on to avoid branch circuit overload NOTE SETTINGS ARE MADE THROUGH SUPPLIED POWERCHUTE SOFTWARE SMART SLOT ACCESSORY CARDS OR TERMINAL MODE Ere HON FACTORY USER SELECTABLE D S RI TON DEFAULT CHOICES High Bypass Point 10 of 5 10 15 Maximum voltage that the UPS output voltage 20 will pass to connected setting equipment during internal bypass operation Low Bypass Point 30 of output 15 20 25 30 Minimum voltage that the UPS voltage setting will pass to connected equipment during internal bypass operation Output Voltage 230 VAC 200 208 220 230 Allows the user to select the 240 VAC output voltage while on line Output Frequency Automatic Automatic Sets the allowable UPS output 5043 Hzor 50 3 Hz frequency Whenever possible 60 3 Hz 50 0 1 Hz the output frequency tracks the 60 3 Hz input frequency 60 0 1 Hz Number of Batteries Number of Connected Defines the number of Batteries connected batteries for proper run time prediction Default setting of 1 1920 VAh 192 V x 10 Ah Setting of 2 3840 VAh etc 12 CONNECT THE EPO EMERGENCY POWER OFF The output power can be disabled in an emergency by closing a switch
19. peratures If the battery s are near the end of their service life consider replacing the battery s even if the Rep ace Battery LED is not illuminated FRONT PANEL LEDS FLASH SEQ UENTIALLY The UPS has been shut down remotely through software or an optional accessory card None The UPS will restart automatically when utility power returns ALL LEDS ARE OFF AND THE UPS S PLUGGED INTO A WALL OUTLET The UPS is shut down and the battery is discharged from an extended outage None The UPS will return to normal operation when the power is restored and the battery has a sufficient charge BYPASS AND OVERLOAD LEDS ILLUMINATE UPS EMITS A SUSTAINED ALARM TONE The UPS is overloaded The connected equipment exceeds the specified maximum load as defined in Specifications on the APC Web site www apc com The alarm remains on until the overload is removed Disconnect nonessential equipment from the UPS to eliminate the overload condition 15 PROBLEM AND POSSIBLE CAUSE SOLUTION BYPASS LED ILLUMINATES The bypass switch has been turned on manually or through an accessory If bypass is the chosen mode of operation ignore the illuminated LED If bypass is not the chosen mode of operation move the bypass switch on the back of the UPS to the normal position FAULT AND OVERLOAD LEDS ILLUMINATE UPS EMITS A SUSTAINED ALARM TONE The UPS has ceased sending power to conne
20. red prepaid carrier to the address given to you by Customer Service TROUBLESHOOTING Use the table below to solve minor installation and operation problems Refer to the APC Web site www apc com for assistance with complex UPS problems PROBLEM AND POSSIBLE CAUSE SOLUTION UPS WILL NOT TURN ON Battery not connected properly button not pushed UPS not connected to utility power supply Very low or no utility voltage Check that the battery connectors are fully engaged Press the button once to power the UPS and the connected equipment Check that the power cable from the UPS to the utility power supply is securely connected at both ends Check the utility power supply to the UPS by plugging in a table lamp If the light is very dim have the utility voltage checked UPS WILL NOT TURN OFF button not pushed Internal UPS fault Press the button once to turn the UPS off Do not attempt to use the UPS Unplug the UPS and have it serviced immediately UPS BEEPS OCCASIONALLY Normal UPS operation when running on battery None The UPS is protecting the connected equipment UPS DOES NOT PROVIDE EXPEC TED BACKUP TIME The UPS battery s are weak due to a recent outage or battery s are near the end of their service life Charge the battery s Batteries require recharging after extended outages They wear faster when put into service often or when operated at elevated tem
21. rk Management card defaults e User Name apc e Password apc e Press 1 and ENTER to select Device Manager e Select the model by entering the corresponding number then press Enter e Press 3 and ENTER to select Configuration e Press 1 and ENTER to select Battery e Press 2 and ENTER to change the Battery Settings e Type in the number of external battery packs Number of packs 1 1920 VAh 2 3840 VAh 3 5760 VAh etc e Press 3 and ENTER to accept the changes e Press ESC multiple times 5 to return to the main menu e Press 4 and ENTER to log out OPERATION SMART UPS RT FRONT DISPLAY Load Battery Charge 085 096 068 for 072 051 y Se 048 034 SR 024 017 A S oO oa 00 Indicator Description Online The Online LED illuminates when the UPS is drawing utility power and performing double conversion to supply power to connected equipment On Battery The UPS is supplying battery power to the connected equipment Bypass The Bypass LED illuminates indicating that the UPS is in bypass mode Utility power is sent directly to connected equipment during bypass mode operation Bypass mode operation is the result of an internal UPS fault an overload condition or a user initiated command either through an accessory or the manual bypass switch Battery operation is not available while the UPS is in bypass mode Refer to Troubleshooting in this manual Fau
22. y other serial interface cable will be incompatible with the UPS connector LA Ethernet Port Connect the UPS to the network using the Network Management Card Emergency Power Off terminal allows the user to connect the UPS to the OO central EPO system EPO Terminal P The UPS features a transient voltage surge suppression TVSS screw for connecting the ground lead on surge suppression devices such as telephone TVSS Screw and network line protectors When connecting grounding cable disconnect the unit from the utility power outlet External Battery Pack Connectors External battery packs must be connected to these connectors located on the rear panel of the unit CONNECT THE EXTERNAL BATTERIES Battery Safety Read and adhere to the following warnings when installing or servicing the external batteries Failure to observe these warnings may result in serious injury death or damage to the equipment WARNINGS e Do not attempt to install or service external batteries alone A qualified electrician should perform the installation and servicing of external batteries e Disconnect charging source s BEFORE connecting or disconnecting battery terminals e External batteries may retain lethal voltages after power has been disconnected and all switches are off e Use extreme caution when making terminal connections Do not allow cables to touch anything except the intended terminal
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