KEHUA TECH MY-A Series, User Manual

Page 1: ...User Manual MY A Series 10kVA 20kVA UPS...

Page 2: ......

Page 3: ...actual product Suitable Model MY10 A MY10 AS MY10 AT MY15 A MY15 AS MY15 AT MY20 A MY20 AS MY20 AT Symbol Conventions The manual quotes the safety symbols these symbols used to prompt users to comply...

Page 4: ...save time Provides additional information to emphasize or supplement important points in the main text Product standard Q ZZKJ 001 Change History Changes between document issues are cumulative The la...

Page 5: ...nce Requirements 3 1 3 Environment Requirements 3 2 Overview 5 2 1 Product Intro 5 2 1 1 Model Meaning 5 2 1 2 Features 6 2 1 3 Appearance 7 2 1 4 Communication 11 2 1 5 Fittings Illustration 18 2 2 W...

Page 6: ...ch Screen Operation 44 4 1 Menu Hierarchy 44 4 2 Main Page 46 4 2 1 Icon Meaning 46 4 2 2 Working Status 47 4 2 3 Bypass Information Page 49 4 2 4 Mains Informaiton Page 50 4 2 5 Battery Information P...

Page 7: ...orking Status Display 77 5 4 Monitoring Page 79 5 5 Setting Management 79 5 5 1 Parameter Setting 80 5 5 2 Function Setting 81 5 5 3 Log Management 83 5 5 4 Screen Setting 83 5 5 5 Permission Setting...

Page 8: ...A 20kVA UPS User Manual vi 6 7 Troubleshooting 90 6 7 1 Common Fault 90 7 Package Transportation and Storage 95 7 1 Package 95 7 2 Transportation 95 7 3 Storage 95 A Technical Specifications 96 B Acro...

Page 9: ...ns Before operating please read the announcements and operation instructions in this section carefully to avoid accident The DANGER WARNING CAUTION etc in the manual are not all the safety announcemen...

Page 10: ...ngs during operating Wear rubber shoes and gloves and use tools with insulated handle Don t put tools or other conductive objects on the battery It is prohibited to short the positive pole and negativ...

Page 11: ...wired or maintained disconnect all electrical connection such as AC power battery power etc to isolate power input Do not do any work on the UPS until it is powered off completely 10min Otherwise the...

Page 12: ...he clearance between the rear or the side of UPS and adjacent devices or wall should be at least 300mm 500mm Poor ventilation will rise temperature inside UPS which will reduce the service life of inn...

Page 13: ...sed in many key business areas such as post finance network stock petroleum refining industrial power electric power automobile etc 2 1 1 Model Meaning MY A MY series online UPS Rated power When it is...

Page 14: ...d status which prolong fan life and reduce noise ECO energy conservation mode design The UPS is designed with ECO energy conservation mode When the grid is good if the UPS operating in this mode the b...

Page 15: ...iew 7 2 1 3 Appearance Figure2 2 Appearance UPS has two types of operation panels touch screen and LCD screen optional In this manual we take the touch screen model as an example to illustrate Operati...

Page 16: ...verter abnormal 4 BYP indicator On green bypass output On red bypass abnormal 5 BATT LOW indicator On red battery is low voltage 6 OVERLOAD indicator On red output is overload or overload protection B...

Page 17: ...button to confirm the command of the current LCD page Long press button for 3s will entry the parameter and function setting page When UPS is on button will be in a cycle of light up to fade out 4 pag...

Page 18: ...2 Overview MY A Series 10kVA 20kVA UPS User Manual 10 Rear panel Figure2 5 Structure of 10kVA rear panel Figure2 6 Structure of 15kVA 20kVA rear panel...

Page 19: ...detection pops up automatically the UPS turns off the inverter and switches to bypass mode Closes the maintenance bypass breaker and then open the input breaker bypass breaker and output breaker Mean...

Page 20: ...on way Sketch map Communication port Parallel kit Parallel port SNMP card Slot 1 RS485 relay card optional Slot 2 choose any one Protocol transfer kit optional SNMP card optional RS485 The UPS adopt R...

Page 21: ...or alarm information can be achieved by communication dry contact Dry contact function can be set through the touch screen Figure2 7 Dry contact position Relay dry contact capacity is 277Vac 30VDC 10...

Page 22: ...al is settable and refers to the note for detail Default is output abnormal NO COM OUT 5 NC Trigger action when signal is valid NO and COM is connect which disconnect with NC The signal is settable an...

Page 23: ...external maintenance bypass The UPS will alarm and turn off the inverter output and switch over bypass output when receiving this signal The trigger level of signal is settable 3 External BB status T...

Page 24: ...ded the signal is valid triggers action of dry contact 6 General abnormal When the UPS is alarming for fault the signal is valid and triggers action of dry contact 7 Normal operation When the UPS is i...

Page 25: ...etting is completed Intelligent slot 2 optional 1 RS485 relay card optional Built in card Three output dry contacts mains status battery status and inverter status configurable as bypass output status...

Page 26: ...tery wiring assembly which can be used to connect the external battery to the UPS The installation position is as shown in 3 5 2 Wiring Between UPS and External Battery Table2 9 Fittings illustration...

Page 27: ...ss output when UPS on the mains boosts by rectifier PFC and output DC bus voltage and then go through inverter and output pure sine wave AC power the output turns to inverter output to load from bypas...

Page 28: ...immediately boost the battery voltage and then maintain the voltage of DC bus voltage to guarantee the inverter output continuous As shown in Figure2 10 DC AC Mains input Battery input Bypass static s...

Page 29: ...r temperature etc while UPS on the UPS will output by bypass When UPS on and the fault removed it will turn to inverter output again If the same fault occurs more than 5 times in a short time the UPS...

Page 30: ...the maintenance bypass breaker and switch off the mains input breaker and bypass input breaker output breaker During the transforming of manual maintenance bypass AC power is supplied for load by main...

Page 31: ...ection etc 3 1 Announcements The installation tools should be with isolated operation which is to avoid electric shock There exist high voltage in wiring terminal please ensure that the wiring termina...

Page 32: ...corrosive objects or high salt 3 2 3 Install Space The installation site should be with enough space to place the device Maintain a clearance of at least 300mm from rear panel of the UPS to the wall...

Page 33: ...power at the front of the UPS input to insulate the mains Considering the UPS charge power and the impact current while power on the selected breaker must be 1 5 to 2 times of UPS input max current an...

Page 34: ...shall be increased Table3 3 Recommended cross sectional area of wire unit mm2 environment temperature 25 Type 10kVA 15kVA 20kVA Mains input live wire U V W 6 16 16 Mains input neutral wire N 6 16 16...

Page 35: ...han 0 5 meters part of the wire is slightly smaller than the recommended specification it can be used normally 3 3 Transport and Unpacking 3 3 1 Transport 1 The UPS must be transported by trained prof...

Page 36: ...site in advance In principle the unpacking site should be as close as possible to the installation site Step 1 Check if the package appearance is in good condition and if there is any damage caused b...

Page 37: ...e bolt position as shown in Figure3 4 dismantle the supporting plate Figure3 4 Bolts position Step 7 Then slip the UPS along the oblique board to ground slowly During moving it needs to operate by two...

Page 38: ...10 holes on the ground by impact drill according to the installation holes size of pedestal as shown in Figure3 6 drilling deviation 2mm Install expansion bolts M8 The structure and installation for t...

Page 39: ...pporting plate not fully locked leave one third to two thirds of the screws Move and align the bottom installation hole of the supporting plate with the expansion bolt Install the flat gasket 8 spring...

Page 40: ...ion 10kVA The wiring operation of 10kVA is the same below we take MY10 A as an example to illustrate Step 1 Dismantle the wiring cover plate There are notch at the bottom of the cover plate When disma...

Page 41: ...ent input sources for mains and bypass The mains input and bypass input are connected separately when the mains input and bypass input have different input sources as shown in Figure3 11 Figure3 11 Wi...

Page 42: ...g with external battery 2 UPS wiring must be strictly in accordance with Figure3 11 or Figure3 12 to avoid short circuit 3 It is necessary to confirm that all wires are connected to the terminal prope...

Page 43: ...is the same below we take MY20 A as an example to illustrate Step 1 Dismantle the wiring cover plate There are notch at the bottom of the cover plate When dismantle the wiring cover plate first disma...

Page 44: ...and bypass input are connected separately when the mains input and bypass input have different input sources as shown in Figure3 16 Figure3 16 Wiring diagram 1 of 15kVA 20kVA Wiring method two One inp...

Page 45: ...all the wiring cover plate Step 4 Divide the wires into two bundles and fixed to the bottom of device through cable tie Figure3 18 Wires fixation 1 There is a fan on the rear plate of the MY15 AT MY20...

Page 46: ...ods one there are 20 cells separately connect to two external battery port every battery cabinet has one 3P breaker the external wiring includes BATT BATT and BATT N as shown in Figure3 20 Wiring meth...

Page 47: ...lation 39 15kVA 20kVA NO 11 Battery cabinet NO 12 NO 20 NO 13 NO 1 NO 2 NO 10 NO 3 UPS BATT BATT BATT N BATT BATT BATT N DC breaker 1 DC breaker 2 EXTERNAL BATTERY CABINET 1 N EXTERNAL BATTERY CABINET...

Page 48: ...diagram 2 of 15kVA 20kVA When the two battery cabinet is shared by two external battery port of UPS please make sure that all battery parameters of each UPS are consistent such as battery branding ba...

Page 49: ...to 3 4 Mechanical Installation Step 2 Connect the wires of input bypass output and battery in parallel system as shown in Figure3 23 or Figure3 24 10kVA UPS 1 UPS 2 INPUT A B C N BYPASS A B C OUTPUT...

Page 50: ...CABINET 2 N EXTERNAL BATTERY CABINET 1 N EXTERNAL BATTERY CABINET 2 N DC breaker 1 DC breaker 2 DC breaker 3 DC breaker 4 Figure3 24 Parallel system wiring diagram of 15kVA 20kVA Step 3 Connect the p...

Page 51: ...ected 1 Ensure that the parallel card of each UPS is correctly installed in the parallel system see the installation guide of parallel card for details 2 The wiring and phase sequence of each UPS in t...

Page 52: ...rameter get UPS status and warning information and perform relative setting Besides it also can query event log for fault diagnosis The parameters values and other details in the pictures in this chap...

Page 53: ...m fault information Current Fault Login Buzzer Control Mains status Bypass status Inner temperature Shows the history record of fault and alarm information Shows the operation records Product name Ser...

Page 54: ...return to the main page Information management Click the icon it will enter the information management page Setting management Click the icon it will enter the setting management page Current fault in...

Page 55: ...without energy transmission status mains inverting status battery inverting status bypass output status ECO output and maintenance bypass output status The corresponding water lights in the monitorin...

Page 56: ...4 Touch Screen Operation MY A Series 10kVA 20kVA UPS User Manual 48 Figure4 5 Mains abnormal battery inverting status Figure4 6 Bypass output status...

Page 57: ...PS User Manual 4 Touch Screen Operation 49 Figure4 7 ECO status Figure4 8 Maintenance bypass output status 4 2 3 Bypass Information Page On main page click icon it will enter the bypass information pa...

Page 58: ...rmation page as shown in Figure4 10 Figure4 10 Mains information page 4 2 5 Battery Information Page In the main page click icon it will enter the battery information page When battery is discharging...

Page 59: ...and remaining time etc as shown in Figure4 11 Figure4 11 Battery information page 4 2 6 Output Information Page In the main page click icon it will enter the output information page The page shows th...

Page 60: ...an be done Figure4 13 Login page The password for common user is 111 the password for administrator is 222 Common user can check the parameters only administrator can check and set the UPS parameters...

Page 61: ...age click the run info icon it will enter the run information page as shown in Figure4 15 to Figure4 18 The page shows the UPS current status including mains status bypass status battery status output...

Page 62: ...4 Touch Screen Operation MY A Series 10kVA 20kVA UPS User Manual 54 Figure4 16 Working status page 2 single UPS Figure4 17 Working status page 1 parallel UPS...

Page 63: ...the history record page as shown in Figure4 19 The page shows the fault and alarm information and they are listed on the basis of time The first record is the latest fault Figure4 19 Event log page 4...

Page 64: ...og page 4 4 4 Device Infomation Page In the information management page click the device information icon it will enter the device information page as shown in Figure4 21 and Figure4 22 Device informa...

Page 65: ...t page as shown in Figure4 23 The page includes system manage battery manage battery test log manage communication setting screen setting dedust setting and password setting Figure4 23 Setting managem...

Page 66: ...4 Touch Screen Operation MY A Series 10kVA 20kVA UPS User Manual 58 Figure4 24 System manage page 1 of output set Figure4 25 System manage page 2 of bypass set...

Page 67: ...djustment V 5 5 Max bypass voltage 10 15 20 Min bypass voltage 10 15 20 Bypass frequency range 5 10 ECO mode On Off ECO voltage range 10 15 ECO frequency range 5 10 After changing the parameter it is...

Page 68: ...ting 4 5 2 Battery Management Page Battery manage page includes equalizing charge voltage floating charge voltage charge current battery test ending voltage low voltage warning low voltage protection...

Page 69: ...MY A Series 10kVA 20kVA UPS User Manual 4 Touch Screen Operation 61 Figure4 29 Battery set page 1 of battery management Figure4 30 Battery set page 2 of battery management...

Page 70: ...4 31 Charge set page 1 of battery management Figure4 32 Charge set page 2 of battery management Table4 2 Setting description for battery mange page Item Settable value Battery type Lead acid Battery c...

Page 71: ...ficient mV 0 5 0 Battery charge current A 10kVA 1 0 10 0 default is 1A 15kVA 20kVA 1 0 20 0 default is 2A Force equalizing charge On Click number input box it will display the input range of setting v...

Page 72: ...dry contact setting is the same below we take dry contact 1 as an example to illustrate Input dry contact On Dry contact page click icon it will enter corresponding dry contact setting page as shown i...

Page 73: ...tput dry contact On Dry contact page click icon it will enter corresponding dry contact setting page as shown in Figure4 37 Click button to save the dry contact setting and return Dry contact setting...

Page 74: ...kVA UPS User Manual 66 Figure4 36 Output dry contact setting page 1 Figure4 37 Output dry contact setting page 2 4 5 5 HMI Setting Page In screen setting page user can set the date time language backl...

Page 75: ...ting Page In setting management page click password setting icon it will enter the password setting page as shown in Figure4 39 Figure4 39 Password setting page 4 5 7 Device Configuration Page In sett...

Page 76: ...4 Touch Screen Operation MY A Series 10kVA 20kVA UPS User Manual 68 Figure4 40 Mode set page 1 of device configuration Figure4 41 Mode set page 2 of device configuration...

Page 77: ...e 3 of device configuration Figure4 43 Other set page of device configuration Table4 3 Setting description for battery mange page Item Settable value Short circuit duration time ms 10 200 Fan s operat...

Page 78: ...ort circuit On Off Test load function On Off Test load rate 10 100 Impact load mode On Off Click number input box it will display the input range of setting value at the top of the input keyboard When...

Page 79: ...story log user log and wave capture Click button you can export the selected items by USB flash drive click the button you can clear the selected items Before clearing it will show the prompting windo...

Page 80: ...72 Figure4 46 Prompting for clearing log Figure4 47 The U dish is not inserted 4 6 Current Fault Page When the UPS is fault the icon at the left will light on as shown in Figure4 48 Click it the page...

Page 81: ...h Screen Operation 73 Figure4 48 Fault alarm status Figure4 49 Current fault information 4 7 Buzzer Control When the UPS fault the buzzer icon will light on Click the icon the buzzer can be muted or o...

Page 82: ...ot be muted when it long beep 4 8 ON OFF Operation In main page click icon the UPS can be started or shutdown When the UPS is shutdown click the icon it will show confirm to power on when the UPS is s...

Page 83: ...MY A Series 10kVA 20kVA UPS User Manual 4 Touch Screen Operation 75 Figure4 52 Confirm to turn off page...

Page 84: ...Standard Depth Timing TestTime BAT Test ECO En V Range F Range ECO Set Wire 3 3 3 1 1 1 ParaMod Single BSC Expand Redund Mode Set Log Manage History Query Screen Set Functon Set Permission Set Date T...

Page 85: ...System inverter icon System battery icon The internal energy bar of the battery changes accordingly depending on the current battery status and battery voltage System current date display System curre...

Page 86: ...5 LCD Screen Operation MY A Series 10kVA 20kVA UPS User Manual 78 Figure5 3 Main power inverter output Figure5 4 Battery inverter output Figure5 5 ECO Bypass output Figure5 6 Maintenance bypass output...

Page 87: ...rder 5 5 Setting Management In any monitoring page by long pressing button for 3s can enter the settings management page the page is mainly for the directory display function the page display includes...

Page 88: ...meter settings and output parameter setting three as shown in Figure5 9 and Figure5 10 Figure5 9 Parameter setting page Figure5 10 Details of parameter setting page By shortly pressing the up down pag...

Page 89: ...nagement page select the Function Set option and short press the button to enter the function settings page and it mainly for the directory display function the page display includes mode set ECO set...

Page 90: ...is set to off the discharge time item is not displayed Figure5 12 Details of function setting page Battery test settings standard test is that UPS return to the electrolytic inversion after turning to...

Page 91: ...revious level page on the screen settings page is the settings management page Figure5 13 Screen set page On the screen settings page select Date and short press the settings button will enter the dat...

Page 92: ...ssword input page short press button can enter the password settings at this time the first password flickering from the left by short press the up down page button can achieve the first bit password...

Page 93: ...ed above and it is not repeated here By touch screen user can easily browse the input output load and battery parameters of the UPS and know the current status and warning information of UPS in time a...

Page 94: ...s long backup model check if the wiring between UPS and battery box is correct and reliable Check if the wiring is neat and the wire binding is in accordance with the specification Check if the instal...

Page 95: ...parallel system is equipped with the parallel kit optional for parallel and has been set to the same parallel mode through the screen display Please refer to the 4 5 7 Device Configuration Page of to...

Page 96: ...hut Down Parallel System Generally it isn t recommended to start or close parallel system frequently Step 1 Shut down all load Step 2 Shut down parallel UPS one by one Step 3 Switch off the related br...

Page 97: ...he working status of cooling fans regularly Prevent sundries from blocking the air outlet If damaged please replace it in time Check the battery voltage and the working status of UPS regularly to disc...

Page 98: ...lose the breaker again After installing UPS connecting with power will fuse the fuse or cause tripping operation The wiring of UPS input or output is short circuit After starting the LCD touch screen...

Page 99: ...alted The grounding connection is not so good The floating voltage between the neutral wire and the grounding wire is too high Table6 2 Meaning of fault symbol and buzzer status NO Fault symbol Buzzer...

Page 100: ...he battery number setting in the parallel does not match the actual system 12 Parallel mismatch Long beep The UPS of parameters setting in the parallel does not match the actual system 13 Short mismat...

Page 101: ...lack N fault power down failure overvoltage protection under voltage protection over frequency fault under frequency fault please check whether the main power input status is normal 22 Bypass abnorma...

Page 102: ...beep alarm once about every 0 2s UPS rectifier fault 25 Inverter abnormal Long beep UPS inverter fault The buzzer alarm in the table above describes the phenomenon of UPS boot state and no beep ban w...

Page 103: ...e object is not allowed to shipping with the device While midway transportation do not put the device in the open air The device cannot suffer any rain snow or liquid material or mechanical damage 7 3...

Page 104: ...t of the UPS needs to decrease rated power linearly to use Frequency range Hz 39 5 70 5 Bypass synchronism track range Hz 50 60 10 50 60 self adaption Bypass input voltage range Vac 10 15 20 default i...

Page 105: ...ave form Sine wave Voltage distortion Resistive full load 1 non linear full load 4 Power factor 0 9 1 settable default is 1 Transfer time of bypass and inverter ms Synchronization 1ms asynchronization...

Page 106: ...ction Protection for battery under voltage overload short circuit over temperature input over voltage communication abnormal etc Noise dB 55 25 Work temperature 5 40 Relative humidity 0 95 non condens...

Page 107: ...Acronyms and Abbreviations 99 B Acronyms and Abbreviations A AC Alternating Current B BMD Bypass Maintain Detection BB Battery Breaker D DC Direct Current E ECO Economic Operation Model EPO Emergency...

Page 108: ...reviations MY A Series 10kVA 20kVA UPS User Manual 100 MBB Maintenance Bypass Breaker P PE Protective Earthing R RS485 Recommend Standard485 S SNMP Simple Network Management Protocol U UPS Uninterrupt...

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