USER'S MANUAL
Contents
1. Communication Port Intelligent Slot Cooling Fan HUE J Cooling Fan Parallel Port ESR Parallel Port External Battery Terminal Back view of 6K Back view of 10K P N 41NE UPH603T0 A00 362. 910 LC lt E steps for LO HI voltage setting B The cursor gt will pop up to indicate the item newly BYPASS RANGE SET History Record R s 3 5 selected Press Enter key to get LO 176V_HI 253V the item of LO or HI range the a NEW gt AC_FAIL 0 L a OLD gt AC_FAIL 0 E user want to adjust REC 0V_LOAD 0 REC 0V_LOAD 0 T LD 1 9 e C Use Up or Down key to adjust the voltage changing 1V by every press LO low rang 176V 20V Hi high range 253V oOo 20V R ea pH n D Once the value is confirmed press Enter key again to save the data 18 19 Output Voltage amp Frequency Adjust A In this screen press Enter key to enter the following steps for output voltage and frequency adjustment B The cursor will pop up to indicate the output voltage and frequency newly selected C Use Up or Down key to adjust the output voltage 220V 230V and 240V Press Enter key to confirm voltage and then the cursor will move to frequency selection The output frequency 50Hz or 60Hz can be adjusted by the same key operation D Once the correct voltage is selected press Enter key again to save the selection 20 OUTPUT Var ADI f20Vac OHA i IH Yee 2 OUTPUT VF ADI e220Vac GOHZ r A h CAJ T OUTPUT Yat AID SAVE YES le HW i l i lt ie ky Wy 5 4 Start up procedure for LED model Pleas
3. 3 and lock up the maintain cover then turn on the machine and gt gt turn all UPS to line inverter mode running 10 3 10 3 Combine machine warning a 25 50 75 100 0 25 50 75 100 a When UPS combine system work at inverter mode make Load level for 6K Load level for 10K sure that all UPS maintain switches at the same place that is to say be at the position of UPS or be at the position of BPS b When turning on the UPS combine system before enter into inverter mode UPS output switch must at OFF model c When UPS combine system work at inverter model please do not operate any UPS maintain switch 24 25 5 7 Battery Maintenance The battery used for this models are regulated sealed lead acid maintenance free battery Please charge the UPS regularly in order to maximize the expected life of the battery When being connected to the utility power whether the UPS is turned on or not the UPS keeps charging the batteries and also offers the protective function of overcharging and over discharging The UPS should be charged once every 4 to 6 months if it has not been used for a long time eln the regions of hot climates the battery should be charged and discharged every 2 months The standard charging time should be at least 12 hours Under normal conditions the battery life lasts 3 to 5 years In case if the battery is found not in good condition earlier replacement should be made Battery
4. X is the breaker panel is greater than 20 meters the difference higher reliability of the power system is For occasions where between the wires of input amp output of the UPSs is reliability is highly depended on N X is the optimal mode required to be less than 10 As long as the UPS is equipped with parallel cables up to 3 units can be connected in parallel to realize output power sharing and power redundancy 2 Parallel installation a Users need to opt a standard 25 pin communication cable which should have 25 cores corresponding stitches and shield as the UPS parallel cable The length of the parallel cable is appropriate to be less than 3 m b Strictly follow the stand alone wiring requirement to perform the input wiring of each UPS 14 15 5 UPS Operation 5 1 Check prior to start up 1 Ensure the UPS is in a suitable positioning 2 Check input cord is secured 3 Make sure the load is disconnected or in the OFF position 4 Check if input voltage meets the UPS rating required 5 2 Start up procedure for LCD model Please follow the instructions below for UPS operation 1 Once the AC source is connected the LCD Display YT weteomere use x UPS shall light up immediately to display first the main menu of greeting context and the Normal LED is blinking to indicate ready to switch on the inverter 2 By pressing the Enter key and the Down key simultaneously for 3 seconds the UPS will s
5. battery pack output The receptacle for connecting the UPS The green and yellow ribbon wires are for connection to the Ground of the battery cabinet 13 3 To complete the connection by plugging the connector of the external battery cable into the external battery socket of the UPS c Connect the output wires of each UPS to an output breaker Do not attempt to connect any loads to the UPS now You should panel connect the input power wire to the right position first And then set d Disconnect the Jumper on JP1 and JP2 of the terminal block the breaker of the battery pack in the ON position After that set the first and connect each output breaker to a main output breaker input breaker in the ON position The UPS begins to charge the and then to the loads battery packs at the time foes The requirement of the output wiring is as follows 4 4 Parallel installation When the distance between the UPSs in parallel and the 1 Brief introduction of the redundancy breaker panel is less than 20 meters the difference NX as aab Taria R between the wires of input amp output of the UPSs is is curren e most reliable power su structure l t N d j ES required to be less than 20 represents the minimum UPS number that the total load needs X represents the redundant UPS number i e the fault UPS number When the distance between the UPSs in parallel and the that the system can handle simultaneously The bigger the
6. is more than 150 Warning LED lits up and buzzer beeps continuously 32 33 8 2 Electrical Performance er 46Hz 54Hz or 56HzZ 64Hz npu 7 1 RS232 Interface 50 98 Full load The following is the pin assignment and description of DB 9 connector Voltage Regulation Synchronized 4Hz in Line mode AC mode 7 Communication Port Frequency Tolerance 0 1 of normal frequency in Battery mode a Power Factor Output a THD lt 2 Full load Linear Load 5 Input minutes gt 130 load transfers to bypass mode Overload Capacity 105 130 load transfers to bypass mode after 10 after 1 second and shutdown the output after 1 minute 8 Product Specification Current Crest Ratio 3 1 maximum 8 1 General eee te K 8 3 Operating Environment Operation Temperature 0 C 40 C Power Power Rating 6KVA 4 2KW 10KVA 7KW 6KVA 4 2KW 10KVA 7KW i Humidity 0 95 non condensing Frequency Hz 50 60 50 60 Altitude lt 1000 M 176 276 V 176 276 V Input A 1A A a mp aa LA Note if the UPS is installed or used in a place where the Battery an anal altitude is above than 1000m the output power must be ial nee RT derated in use please refer to the following G Vac 220V 220V utpu Amp 27A 45A Altitude M 1000 1500 2000 2500 3000 3500 4000 4500 5000 WxDxH mm 260x570x717 260x570x717 Weight kg 90 93 70 34 35 Appendix 1 Outline Description and Back Panel
7. of combine line into parallel card s slot and screw down its pin and then lock up the board of parallel ports over again at the same time take apart the maintain board of new UPS Turn on the battery switch of new UPS and line input connection switch outside measure voltage difference between output live wire of new UPS and output live wire of parallel system If the voltage difference lt 1V please close output live wire s witch of new UPS 22 h Take apart the board of parallel ports when UPS has turned to bypass mode insert the other end of combine line into parallel card s slot and screw down its pin and then lock up the board of parallel ports over again Close line input switch of all UPS including new UPS in the parallel system lock up maintain board unless all UPS turn to bypass mode press the open key in turn observe whether the display state of every UPS is normal at the same time observe whether all UPS all together turn to inverter model and measure the voltage difference of every UPS ports JP2 Turn off all UPS take apart maintain board of all UPS unless they all have turned to bypass mode Turn all the maintain switches from BPS to UPS and lock up every maintain board Turn on UPS make all UPS changed into line inverter mode to work parallel Note If the state of UPS is abnormal in step 8 please follow operational process of removing single UPS to maintain 2 Process of removing singl
8. panel of the UPS if necessary To connect the load with the UPS please turn off all the loads first then perform the connection and finally turn on the loads one by one No matter the UPS is connected to the utility power or not the output of the UPS may have electricity The parts inside the unit may still have hazardous voltage after turning off the UPS To make the UPS have no output power off the UPS and then disconnect the utility power supply Suggest charging the batteries for 8 hours before use After connection turn the input breaker in the ON position the UPS will charge the batteries automatically You can also use the UPS immediately without charging the batteries first but the backup time may be less than the standard value 1 m If it is necessary to connect the inductance load such as a Input Ground Input Neutral Input Line JP1 fe monitor or a laser printer to the UPS the start up power should be used for calculating the capacity of the UPS as its start up power consumption is too big when it is started lele ra NZ Output Ground L Output Neutral Output Line JP2 Input and output Terminal Block wiring diagram Important notes If the UPS is used in single mode JPI and JP2 must be connected by 10AWG 6mm2 If the UPS is used in parallel mode the Jumper between JP1 and JP2 must be removed 4 3 Procedure for connecting the long backup time UPS with the external ba
9. replacement should be performed by qualified personnel 6 Replace batteries with the same number and same type of batteries 6 Do not replace the battery individually All the batteries should be replaced at the same time following the instructions of the battery supplier 6 Normally the batteries should be charged and discharged once every 4 to 6 months Charging should begin after the UPS shuts down automatically in the course of discharging the standard charging time for the standard UPS should be at least 12 hours 26 5 8 Notes for Battery Disposal and Battery Replacement 6 Before disposing of batteries remove conductive jewelry such as necklace wrist watches and rings f itis necessary to replace any connection cables please purchase the original materials from the authorized distributors or service centers so as to avoid overheat or spark resulting in fire due to insufficient capacity 6 Do not dispose of batteries or battery packs in a fire they may explode 6 Do not open or mutilate batteries released electrolyte is highly poisonous and harmful to the skin and eyes 6 Do not short the positive and negative of the battery electrode otherwise it may result in electric shock or fire Make sure that there is no voltage before touching the batteries The battery circuit is not isolated from the input potential circuit There may be hazardous voltage between the battery terminals and the ground 6 Even tho
10. USER S MANUAL CONTENTS 4 On Li ne 6K 1 OKVA 1 Safety Instructions sse ee eee 2 Introduction Uninterruptible Power Supply 4 Connection and Installation System Description 5 UPS Operation serron E a WELCOME TO USE a 6 Trouble Shooting Guide eessecsssssesesessesesseeeees a 7 Communication Port CO Product Specification eee eee 1 Safety Instructions 1 1 Transport X Please transport the UPS system only in the original packaging to protect against shock and impact 1 2 Set up X Condensation may occur if the UPS system is moved directly from a cold to a warm environment The UPS system must be absolutely dry before being installed Please allow an acclimatization time of at least two hours Do not install the UPS system near water or in damp environments Do not install the UPS system where it would be exposed to direct sunlight or near heat Do not block off ventilation openings in the UPS system s housing 1 3 Installation Do not connect appliances or items of equipment which would overload the UPS system e g Laser printers to the UPS outlet socket x Place cables in such a way that no one can step on or trip over them Do not connect domestic appliances such as hair dryers to UPS output sockets 1 4 Operation Do not disconnect the mains cable on the UPS system or the building wiring socket outlet shockproof socket outlet during operations si
11. ains voltage In the event of power failure the maintenance free batteries power the inverter This manual covers the UPS listed as follows Please confirm whether it is the model you intend to purchase by performing a visual inspection of the Model on the rear panel of the UPS a gt LCD 6K LED oaeo LED 3 System Description 3 1 Front panel description for LCD model 1 1 LCD Display This indicates the UPS operation information including UPS status input output voltage input output frequency battery voltage battery capacity left output load inside temperature and the times of history events 2 Up key Use to select upward the UPS status on LCD Display 3 Down key Use to select downward the UPS status on LCD Display Beside press it simultaneously with the Up key to switch off the UPS 4 Enter Key It is pressed with the Down key to turn on the UPS In battery operation mode press it with Up key at the same time to disable the buzzer Beside it is pressed to confirm and enter the item selected 5 Fault LED red To indicate the UPS is in fault condition because of inverter shutdown or over temperature 6 Warning LED yellow To indicate the UPS is in the status of overload bypass and battery back up 7 Normal LED green To indicate the UPS is operating normally 3 2 Front panel description for LED module aitik A EMH HA 1 Line LED green To indicate the AC power is ap
12. e UPS a If want to remove UPS which is running normally please press the close key of the removing one continuously for 2 times b Shut off the UPSs own line switch line output switch outside and battery switch when this UPS need to remove out 23 c Turn off other UPS which are running take apart the TO RICKO One N Omir ancaraanede maintain cover of every UPS and turn all UPS maintain The backup time of the long backup time model is dependent on the switch from UPS to BPS until all running UPS turn to BPS external battery pack capacity and the load level as well as other mode Then turn off every UPS own input switch factors d After removing single UPS if leaving UPS system is The backup time of standard model may vary from different models changed to single running please connect the short line and load level Please refer to the following between JP1 and JP2 of this UPS output port e Take apart another UPS parallel cover and combine line connected with the UPS which need to remove until all UPS panels become black then lock up the cover of parallel ports again f Take apart UPS parallel cover and combine line when the Poe paa o iL _ UPS have to remove then lock up the cover of parallel ports again S 50 S T O O O S g Shut input line switch of leaving UPS system turn maintain Z Z Z switch from BPS to UPS until all UPS turn to BPS mode 3 2
13. e follow the instructions below for UPS operation 1 Once the AC source is connected Line LED shall light up immediately to indicate ready to switch on the inverter In case this LED blinks it means the main AC source is out of tolerance 2 Press both of the Control Key and the ON TEST MUTE key simultaneously for 3 seconds the UPS will start up after two beeps and Inverter LED lights up to indicate the UPS is powered through inverter 21 5 5 Parallel machine maintenance This UPS system has parallel machine function if you want to add single machine to parallel system please follow operational process of joining new machine if because of cutting down load or attainting UPS and you must remove UPS please follow operational processes of removing parallel machine 1 Join new UPS process a Before joining new UPS user should prepare input amp output line switch and combine line New UPS input amp output switch should be turned off according to port sign link Input amp output line and batteries synchronously remove the connection between JP1 and JP2 Turn off UPS system when all UPS work at bypass model please take apart every UPS repaired board turn all UPS repaired switches from UPS to BPS and then turn off all UPS input switch If UPS system works at single UPS model then have to remove the connection of JP1 and JP2 Take apart the board of parallel ports insert one end
14. following instructions by professional personnel For safety please cut off the mains power switch before installation Open the terminal block cover located on the rear panel of the UPS please refer to the appearance diagram For 6K UPS it is recommended to select the UL1015 10AWG 6mm_2 wire or other insulated wire which complies with AWG Standard for the UPS input and output wirings For 10K it is recommended to select the UL1015 8AWG 10mmz2 wire or other insulated wire which complies with AWG Standard for the UPS input and output wirings Note Do not use the wall receptacle as the input power source for the UPS as its rated current is less than the UPS s maximum input current Otherwise the receptacle may be burned and destroyed Connect the input and output wires to the corresponding input and output terminals according to the following diagram Note you must make sure that the input and output wires and the input and output terminals are connected tightly 10 g The protective earth ground wire refers to the wire connection between the equipment which consumes electric equipment and the ground wire The wire diameter of protective earth ground wire should be at least as above mentioned for each model and green wire or green wire with yellow ribbon wire is used After having completed the installation make sure the wiring Is correct Please install the leak current protective breaker at the output power distribution
15. ical load AC utility power fails The load is in order to extend backup running normally but battery capacity is Gu L ele ent supplied by battery power Buzzer time If it is not abnormal Please replace charger board low Buzzer beeps once every second alarm sounds every 4 seconds power failure please check for battery low the rated input or connected line AC utility power is normal The output load is supplied through bypass of AC Please contact your agent AC utility fails UPS is in battery backup mode and battery power is approaching UPS will shut down utility Fault LED lits up and buzzer for service automatically Please save beeps continuously low level Buzzer alarm beeps every Ja ata soon second AC utility power is normal but UPS is 7 l l Please reduce the critical overloaded Warning LED lits up and l load to lt 100 UPS will restart up when AC buzzer beeps per second p utility power is restored If AC utility power fails and battery runs l AC utility power failure is l l out UPS has shut down automatically AC utility power is normal but UPS is more than 6 hours please overloaded up to 125 Warning LED Please reduce the critical follow storage instruction does not fade out and buzzer beeps load to lt 100 per 0 5 second AC utility power is normal but the load is supplied by AC utility power via PP y yP Please reduce the critical load to lt 100 bypass Output power
16. llowing parts information 4 2 Input and output power cords and protective earth ground installation No 9 LED 0 25 battery low level No 8 amp 9LEDs 26 50 No 6 amp 7 amp 8 amp 9 LEDs 76 95 1 Notes for installation No 7 amp 8 amp 9 LEDs 51 75 No 5 amp 6 amp 7 amp 8 amp 9 LEDs 96 100 a The UPS must be installed in a location with good ventilation far away from water inflammable gas and corrosive agents 10 Fault LED red To indicate the UPS is in fault condition because of b inverter shutdown or over temperature Ensure the air vents on the front and rear of the UPS are not blocked Allow at least 0 5m of space on each side 11 OFF key It should be pressed with the control key simultaneously c Condensation to water drops may occur if the UPS is unpacked to switch off the UPS in a very low temperature environment In this case it is necessary to wait until the UPS is fully dried inside out before 12 Control key this key is pressed simultaneously with OFF or proceeding installation and use Otherwise there are hazards of ON TEST MUTE key to switch on off the UPS do auto test and electric shock disable the buzzer 13 ON TEST MUTE key It should be pressed with the control key simultaneously to switch on UPS do UPS auto test in normal AC mode and turn off the buzzer in battery operation 2 Installation a Installation and wiring must be performed in accordance with the local electric code and the
17. may occur between the battery terminals and the ground Before touching please verify that no voltage is present Batteries may cause electric shock and have a high short circuit current Please take the precautionary measures specified below and any other measures necessary when working with batteries remove wristwatches rings and other metal objects use only tools with insulated grips and handles X When changing batteries install the same number and same type of batteries Do not attempt to dispose of batteries by burning them This could cause battery explosion Do not open or destroy batteries Escaping electrolyte can cause injury to the skin and eyes It may be toxic Please replace the fuse only by a fuse of the same type and of the same amperage in order to avoid fire hazards Do not dismantle the UPS system 2 Introduction This On Line Series is an Uninterruptible Power Supply incorporating double converter technology It provides perfect protection specifically for Novell Windows NT and UNIX servers The double converter principle eliminates all mains power disturbances A rectifier converts the alternating current from the socket outlet to direct current This direct current charges the batteries and powers the inverter On the basis of this DC voltage the inverter generates a sinusoidal AC voltage which permanently supplies the loads Computers and periphery are thus powered entirely by the m
18. nce this would cancel the protective earthing of the UPS system and of all connected loads X The UPS system features its own internal current source batteries The UPS output sockets or output terminals block may be electrically lived even if the UPS system is not connected to the building wiring socket outlet X Ensure that no fluids or other foreign objects can enter the UPS system The UPS operates with hazardous voltages Only qualified maintenance personnel may carry out repairs 1 5 Maintenance servicing and faults X The UPS system operates with hazardous voltages Only qualified maintenance personnel may carry out repairs Caution risk of electric shock Even after the unit is disconnected from the mains power supply building wiring socket outlet components inside the UPS system are still connected to the battery and are still electrically live and dangerous Before carrying out any kind of servicing and or maintenance disconnect the batteries and verify that no current is present and no hazardous voltage exist in the terminals of high capability capacitor such as BUS capacitors X Only persons are adequately familiar with batteries and with the required precautionary measures may replace batteries and supervise operations Unauthorised persons must be kept well away from the batteries X Caution risk of electric shock The battery circuit is not isolated from the input voltage Hazardous voltages
19. plied to the UPS input In case this LED blinks it means the main AC source is out of tolerance 2 Bypass LED yellow To indicate the load is powered via the bypass 3 Battery LED yellow To indicate the UPS is in battery backup mode when the mains power has failed l 4 Connection and Installation 4 Inverter LED green To indicate the UPS is powered through inverter The system may be installed and wired only by qualified electricians in accordance with applicable safety regulations 5 9 Load amp Battery Capacity LEDs PP y reg a No 5 to 8 LED is green color and No 9 used as warning 4 1 Unpacking and Inspection for 6K 10K LED for overload or battery low is yellow b These LEDs show the load of the UPS if the mains power 1 Unpack the packaging and check the package contents The is available in normal operation LEDs light up to indicate shipping package contains the following information AUPS A user manual No 5 LED 0 25 No 586 amp 7 amp 8 LEDs 76 100 A communication cable No 5 amp 6 LEDs 26 50 No 586 amp 7 amp 88 amp 9 LEDs Overload No 5 amp 6 amp 7 LEDs 51 75 2 Inspect the appearance of the UPS to see if there is any damage during transportation Do not turn on the unit and notify the carrier c In the battery operation the LEDs indicate the capacity of and dealer immediately if there is any damage or lacking of some the batteries LEDs light up to indicate the fo
20. ss of AC utility Fault LED lits up and buzzer beeps continuously 28 29 No LED and LCD status ACTION AC OK BAT OK BYPASS OUTPUT a AC utility power is normal but the load is supplied by AC utility power via bypass Output power is more than 150 referring to the Output Power Menu Warning LED lits up and buzzer beeps continuously AC FAIL BAT OK BAT INVERTER AC utility power fails The full load is supplied by battery power in UPS Buzzer alarm sounds every 4 seconds 30 Please reduce the critical load to POWER lt 100 If AC utility power fails reduce the less critical load in order to extend backup time If it is not abnormal power failure please check the rated input or connected line No LED and LCD status ACTION AC FAIL BAT LOW BAT INVERTER AC utility fails The load is supplied by UPS in backup mode and battery power is approaching low level Buzzer alarm beeps every second AC utility power fails and battery runs out UPS has shut down automatically 31 UPS will shut down automatically Please save data soon UPS will restart up when AC utility power is restored In case AC utility power fails more than 6 hours please follow storage instruction 6 2 For LED Model No UPS STATUS ACTION The following guideline may be helpful for basic problem solving No UPS STATUS ACTION AC utility power is normal UPS is If AC utility power fails reduce the less crit
21. tart up after two beeps and Normal LED lights up to indicate the power is from its inverter to the load 3 When the Down key and the Up key are pressed simultaneously for 3 seconds the inverter will be turned off after two beeps and the UPS is on the standby status LCD display illuminates and Normal LED is blinking until AC source is disconnected 16 5 3 LCD display menu Use Up Down key to select menu displays of the LCD described below This screen will refresh once the system power is enabled Rated Spec Status l 220V 1P2W 50HZ AC FAIL BAT OK O 220V 1P2W 50HZ BAT INVERTER Oe Voltage INPUT VOLTAGE OUTPUT VOLTAGE 0 Vac 220 Vac LOR EIL L o Frequency INPUT FREQUENCY OUTPUT FREQUENCY 0 HZ 50 HZ D n 17 Battery Status 6 Output and bypass setting Just connect the AC power don t need to turn on the UPS and the LCD will a Vy eins ceca light up with the welcome slogan initial screen Then press the Down key to 37 Vac 100 s er a ae find the screen and then press Enter key for setting Once finished please disconnect the AC power and then reconnect power again to refresh the setting Bypass Range Set A To protect the load the function of Output Power Temperature bypass auto transfer is activated R EE only when the AC main voltage is LO 176V_HIF253V e J9 Tre Tew a ae lt HI high In this screen press Enter key to enter the following
22. ttery 1 The nominal DC voltage of external battery pack is 240VDC Each battery pack consists of 20 pieces of 12V maintenance free batteries in series To achieve longer backup time it is possible to connect multi battery packs but the principle of same voltage same type should be strictly followed 12 2 The connector of the external battery cable is used to plug into the external battery socket of the UPS The other end of the external battery cable is made of three open wires with ring terminals to connect with the external battery pack s The procedure of installing battery bank should be complied with strictly a ADC breaker must be connected between the battery pack and the UPS The capacity of breaker must be not less than the data specified in the general specification b Set the battery pack breaker in OFF position and connect the 20 pieces of batteries in series c Must connect the external battery cable to the battery first The positive pole of the battery is connected to the UPS in parallel with blue and brown wires the negative pole of the battery is connected to the UPS in parallel with black and white wires the green and yellow ribbon wire is connected to the ground of the battery cabinet The blue amp brown wires for connection to the positive terminal of the battery pack output Z The black amp white wires for connection to the Negative terminal of the
23. ugh the input breaker is disconnected the components inside the UPS are still connected with the batteries and there are potential hazardous voltages Therefore before any maintenance and repairs work is carried out switch off the breaker of the battery pack or disconnect the jumper wire of connecting between the batteries Batteries contain hazardous voltage and current Battery maintenance should be carried out by qualified personnel who are knowledgeable about batteries 27 7 Trouble Shooting Guide No LED and LCD status ACTION OUTPUT POWER 105 6 1 For LCD Model The following guideline may be helpful for basic problem solving No LED and LCD status ACTION AC 0K BAT LOW INVERTER OUTPUT Please reduce the critical load to POWER lt 100 Charger may break AC utility power is normal but UPS is down Please overloaded Warning LED lits up and buzzer replace charger beeps per second AC utility power is normal UPS is running board normally but battery capacity is low referring to Battery Status Menu Buzzer beeps once every second for battery low I ee a Please reduce the critical load to POWER lt 100 AC OK BAT OK INVERTER FAULT a AC utility power is normal but UPS is Please contact your overloaded up to 125 Warning LED does not agent for service fade out and buzzer beeps per 0 5 second AC utility power is normal The output load is supplied through bypa
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