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Chapter 1 Installation

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Shield M10U user manual

panel

Power

module

SNMP

parallel

Dry

contactor

Manual
breaker

(a)

6 modules cabinet

Bypass

module

Power

module

connector

breakers

Ellipse

cable entry

Round

cable entry

(b)

4 modules cabinet

Bypass module

Power module

Manual bypass

Dry contactor

SNMP

RS485

RS232

Parallel

Ellipse cable

entry

(c)

3 modules cabinet

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Summary of Contents for M10U

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Page 2: ...e equipment should be taken into account when selecting instantaneous RCCB or RCD devices Residual Current Circuit Breakers RCCBs must be selected sensitive to DC unidirectional pulses class A and insensitive to transient current pulses Note also that the earth leakage currents of the load will be carried by this RCCB or RCD This equipment must be earthed in accordance with local electrical author...

Page 3: ...SOCIATED WITH THIS EQUIPMENT WHEN CONNECTED TOGETHER THE BATTERY TERMINAL VOLTAGE WILL EXCEED 400Vdc AND IS POTENTIALLY LEATHAL Battery manufacturers supply details of the necessary precautions to be observed when working on or in the vicinity of a large bank of battery cells These precautions should be followed implicitly at all times Particular attention should be paid to the recommendations con...

Page 4: ...1 UPS Dry Contactor and Monitoring Board Features 11 1 7 2 Dry Contactor Interface of Battery and Environmental Temperature Detection 12 1 7 3 Remote EPO Input Port 12 1 7 4 Generator Input Dry Contactor 13 1 7 5 BCB Input Port 14 1 7 6 Battery Warning Output Dry Contactor Interface 14 1 7 7 Integrated Warning Output Dry Contactor Interface 15 1 7 8 Mains Failure Warning Output Dry Contactor Inter...

Page 5: ...3 Procedure for Switching the UPS between Maintenance Bypass and Normal Mode 36 6 3 1 Procedure for Switching from Normal Mode to Maintenance Bypass Mode 36 6 3 2 Procedure for Switching from Maintenance Mode to Normal Mode 36 6 4 Procedure for Completely Powering Down a UPS 37 6 5 EPO Procedure 37 6 6 Auto Start 38 6 7 UPS Reset Procedure 38 6 8 Operation Instruction for Power Module Maintenance ...

Page 6: ...Contents Shield M10U user manual V 9 6 Electrical Characteristics Inverter Output 57 9 7 Electrical Characteristics Bypass Input 58 9 8 Efficiency 59 Appendix A Power Connection of Modular System 60 ...

Page 7: ...ront View and Rear View without Door 24 Fig 4 4 40KVA UPS Module System Front View and Rear View without Door 24 Fig 4 5 20KVA UPS Module System Front View and Rear View without Door 24 Fig 4 6 90KVA UPS External Dimensions 25 Fig 4 7 40KVA UPS External Dimensions 25 Fig 4 8 20KVA UPS External Dimensions 26 Fig 4 9 Power Connection of Module System UPS 27 Fig 4 10 Power Module 27 Fig 4 11 Monitori...

Page 8: ...failure warning dry contactor 15 Table 7 1 Description of UPS Operator Control and Display Panel 40 Table 7 2 Status Description of Indicator 41 Table 7 3 Description of Audible Alarm 41 Table 7 4 Functions of Functional Keys 41 Table 7 5 Description of LCD Icons 42 Table 7 6 Description of Items in UPS System Information Window 43 Table 7 7 description of details of submenu in setting 46 Table 7 ...

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Page 10: ... exceed 400Vdc and is potentially lethal Eye protection should be worn to prevent injury from accidental electrical arcs Remove rings watches and all metal objects Only use tools with insulated handles Wear rubber gloves If a battery leaks electrolyte or is otherwise physically damaged it must be replaced stored in a container resistant to sulfuric acid and disposed of in accordance with local reg...

Page 11: ...it against excessive humidity and heat sources see Table 9 2 The battery needs to be stored in dry and cool place with good ventilation The most suitable storage temperature is 20 ºC to 25ºC Preventing battery deep discharge Should the UPS remains unpowered for a prolonged period of time while the battery are connected the batteries may deeply discharge and being so permanently damaged In such cas...

Page 12: ...ghtening of power terminations within the UPS it is recommended that clearance around the front of the equipment should be sufficient to enable free passage of personnel with the doors fully opened It is important to leave a distance of 500mm in the rear side of the rack to permit adequate circulation of air coming out of the unit If the UPS make use of internal modular battery sufficient clearing...

Page 13: ...llel Dry contactor Manual breaker a 6 modules cabinet Bypass module Power module connector breakers Ellipse cable entry Round cable entry b 4 modules cabinet Bypass module Power module Manual bypass Dry contactor SNMP RS485 RS232 Parallel Ellipse cable entry c 3 modules cabinet ...

Page 14: ...dules When installing power modules always work from the lower available space upwards to prevent from raising the center of gravity The default setting from the bottom space upwards is NO 1 to NO 2 2 modules cabinet NO 1 to NO 3 3 modules cabinet NO 1 to NO 4 4 modules cabinet NO 1 to NO 6 6 modules cabinet Notes If installed as standalone unit it s recommended that install power modules from upp...

Page 15: ...strips Fig 1 2 Power Module Installation When using the UPS in a rack mount configuration the UPS must be supported by a slide kit fixed rails or a shelf Fasten slide kit into the rack enclosure Remove side panels and holders of UPS as Fig 1 3 Lay the UPS in rack mounting position Fasten the UPS into the rack enclosure with 20 M6 screws a Remove side panels and holders ...

Page 16: ...iver 1 4 9 Cable Entry Cables can enter the module UPS rack system both from bottom and back The recommended installation practice is to connect cables through ellipse hole to prevent foreign material or vermin entering the cabinet Use circular entry protector if ellipse hole is not big enough If connect cables through bottom entry remove the cover and install a rubber cable protector in the botto...

Page 17: ...engineers The installation engineers should have the knowledge of the regulatory wiring standards and of the equipment to be installed 1 5 1 Rectifier and Bypass Input Supply of the UPS Over currents Install suitable protective devices in the distribution unit of the incoming mains supply considering the power cable current carrying capacity and overload capacity of the system see Tab 9 7 Generall...

Page 18: ...NING FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES CAN RESULT IN EMI ELECTRIC SHOCK HAZARD OR RISK OF FIRE SHOULD AN EARTH FAULT OCCUR Table 1 2 Maximum Steady State AC and DC Current UPS power KVA Rated current A Main input current at full load battery charging1 2 Output current at full load2 Battery discharging current at E O D 1 67V cell no overload 380V 400V 415V 380V 400V 415V 36 Batt stri n...

Page 19: ...tify and make power connections for incoming cables according to one of the two procedures below depending on the type of installation Common Input Connections 4 For common bypass and rectifier inputs connect the AC input supply cables to the UPS input terminals input A B C N Refer to Fig 4 11 and tighten the connections to 5 Nm M6 Bolt 13Nm M8 Bolt or 25Nm M10 Bolt ENSURE CORRECT PHASE ROTATION S...

Page 20: ...e UPS dry contactor board GJ and monitoring board JK at the front of bypass module The boards provide the following interfaces EPO Environment and battery temperature input interface Generator input dry contactor interface Battery warning output dry contactor interface Battery circuit breaker interface Mains failure warning output dry contactor interface Intellislots TM intelligent card interface ...

Page 21: ...P_BAT Battery temperature detection J2 2 TEMP_COM Common terminal J3 1 TEMP_ENV Environment temperature detection J3 2 TEMP_COM Common terminal Note Specified temperature sensor is required for temperature detection R25 5Ohm B25 50 3275 please confirm with the manufacturer or contactor local maintenance engineers when placing an order 1 7 3 Remote EPO Input Port The UPS has an Emergency Power OFF ...

Page 22: ... must be shorted Note 1 The emergency stop action within the UPS will shut down the rectifier inverter and static bypass However it does not internally disconnect the mains input power supply To disconnect ALL power to the UPS open the upstream input circuit breaker s when the EPO is activated 2 Pin 1 and 2 of J4 have been shorted before the UPS is delivered 3 All auxiliary cables must be double i...

Page 23: ... BCB on line input normally open BCB is on line when the signal is connecting with common connection Note All auxiliary cables must be double insulated twisted cables with cross sectional area of 0 5mm2 1 5mm2 for maximum connection length between 25m and 50m 1 7 6 Battery Warning Output Dry Contactor Interface J8 is the output dry contactor interface which outputs the battery warnings of low or e...

Page 24: ...iption Position Name Purpose J9 1 ALARM_NC Integrated warning relay normally closed will be open during warning J9 2 ALARM_NO Integrated warning relay normally open will be closed during warning J9 3 GND Common connection Note All auxiliary cables must be double insulated twisted cables with cross sectional area of 0 5mm2 1 5mm2 for maximum connection length between 25m and 50m 1 7 8 Mains Failure...

Page 25: ...uring warning J10 2 UTI_FAIL_NO Mains failure warning relay normally open will be closed during warning J10 3 GND Common connection Note All auxiliary cables must be double insulated twisted cables with cross sectional area of 0 5mm2 1 5mm2 for maximum connection length between 25m and 50m Note Connect dry contactoror cables as Fig 4 12 警告危险警告危险 ...

Page 26: ... cables should be as short as possible Battery Handling When connecting the battery follow the precautions for high voltage operation Before accepting and using the battery check the appearance the battery If the package is damaged or the battery terminal is dirty corroded or rusted or the shell is broken deformed or has leakage replace it with new product Otherwise battery capacity reduction elec...

Page 27: ...e underside of the shelf above as this is necessary for monitoring and servicing the cells When installing the batteries always work from the bottom shelf upwards to prevent raising the center of gravity Install the batteries reliably and avoid vibration and mechanical bumping The bending radius of cable should be more than 10D where D is the outer diameter of cable When connecting the cable do no...

Page 28: ...ctor between the positive and negative terminals of the battery Do not close the battery circuit breakers before getting the approval from the commissioning engineer 2 3 Battery Maintenance For the battery maintenance and precautions please refer to IEEE Std 1188 2005 and the relevant manuals provided by the battery manufacturers Battery Maintenance Note Check to ensure that all the safety devices...

Page 29: ...ports remote emergency power off function that can be used to shut down the UPS rack module remotely Note 1 The remote EPO switch must provide normally open or normally closed dry contactor signals 2 The open circuit voltage is 24Vdc and the current is less than 20mA 3 Normally closed EPO J4 terminals Pin 1 and pin 2 have been connected in factory and located on the dry contactor board 4 Set EPO f...

Page 30: ... Refer to Chapter 1 Installation Note The length and specification of the power cables of each UPS module should be the same including the bypass input cables and UPS output cables so that the load sharing effect can be achieved in bypass mode 3 2 4 Parallel Signal Board Installation of parallel signal board The parallel signal board is installed at the rear of the cabinet Shown as below CAN bus s...

Page 31: ...Chapter 3 Installation of UPS Rack System and System 22 Shield M10U user manual UPS1 UPS2 Fig 3 3 Connection of Parallel Cables of 1 N System ...

Page 32: ...wer Cables External Batt N To External Battery Connection Dry Contact Board SNMP SNMP Card RS232 RS485 J2 J3 J4 J5 J6 J7 J8 J9 J10 Batt Temperature ENV Temperature EPO GEN BCB Batt Low Alarm General Alarm Utility Fail Fig 4 1 Wiring Diagram BCB UV Batt Batt N Batt Rack Modular UPS BCB_DRV BCB_CONT J6 J7 BCB_ONL 24V 24V 24V 24VDC Auxiliary Contactor BCB DRV BCB STATUS GND Fig 4 2 External Battery C...

Page 33: ...nel Power module Side decorative strip 2 Fig 4 3 6 modules UPS System Front View and Rear View without Door Bypass module Power module connector breakers Ellipse cable entry circular cable entry Fig 4 4 4 Modules UPS System Front View and Rear View without Door Bypass module Power module breakers connector Ellipse cable entry circula r cable entry Fig 4 5 2 Modules UPS System Front View and Rear V...

Page 34: ...Chapter 4 Installation Drawing Shield M10U user manual 25 Fig 4 6 6 Modules UPS External Dimensions Fig 4 7 4 Modules UPS External Dimensions ...

Page 35: ...Chapter 4 Installation Drawing 26 Shield M10U user manual Fig 4 8 2 Modules UPS External Dimensions a 20KVA 40KVA power connection ...

Page 36: ...on of Module System UPS Input power board DSP burn in board DSP board Output power board PFC power board INV power board Fan control board connector Fig 4 10 Power Module connector Bypass power board Bypass fans Power supply Dry contactor Burn in board Monitoring board LCD Cover a 20KVA 40KVA Bypass Module ...

Page 37: ...d Bypass Module Notes for installing modules 1 When installing the modules install the modules from bottom to top When removing the modules remove the modules from top to bottom The purpose is to maintain the stable center of gravity 2 After inserting the module tighten all the screws 3 When removing the modules turn off modules first remove the screws and then remove the modules 4 Wait for 5 minu...

Page 38: ...ting in decorative metal strip Fig 4 12 cables routing dry contactoror RS485 SNMP Notes for signal cables routing 1 Remove cover on front panel and remove right metal strip 2 Connect cables and route as Fig 4 12 3 Cover right metal strip back to UPS to cover the cables ...

Page 39: ...se width modulation PWM associated with fully digital signal processing control DSP which features high reliability and convenience for use As shown in fig 5 1 the AC input mains source is supplied at UPS input and converted into a DC source This DC source feeds the Inverter that converts the DC source into a clean and input independent AC source The battery powers the load through the inverter in...

Page 40: ...units operate together for the purpose of providing additional power or reliability or both The load is equally shared between any paralleled UPSs 5 2 1 Features of Parallel System 1 The hardware and firmware of single module UPS units are completely compatible with the requirements of a parallel system Parallel configuration can be achieved merely through settings in configuration software The pa...

Page 41: ...C mains recovers This mode and any delay time are programmed by the commissioning engineer 5 3 4 Bypass Mode If the inverter overload capacity is exceeded under normal mode or if the inverter becomes unavailable for any reason the static transfer switch will perform a transfer of the load from the inverter to the bypass source with no interruption in power to the critical AC load Should the invert...

Page 42: ... Battery self test and self service At periodic intervals 25 of the rated capacity of the battery will be discharged automatically and the actual load must exceed 25 of the rated UPS kVA capacity If the load is less than 25 auto discharge cannot be executed The periodic interval can be set from 720 to 3000 hours Conditions Battery at float charge for at least 5 hours load equal to 25 100 of rated ...

Page 43: ...ol and Display Panel for all the user operating keys and LED displays 2 The audible alarm may annunciate at various points in these procedures 3 The UPS function can be set via maintenance software However the setting and commissioning must be done by maintenance engineers trained 6 1 1 Power Switches The UPS rack system has a manual bypass breaker a bypass input breaker and all the other transfer...

Page 44: ...ter is ready the UPS transfers from bypass to inverter the bypass indicator turns off and the inverter and load indicators turn on The UPS is in normal mode The UPS Mimic LEDs will indicate as following LED Status Rectifier indicator Green Battery indicator Red Bypass indicator Off Inverter Indicator Green Load indicator Green Status indicator Red 4 Close external battery switch battery indicator ...

Page 45: ... battery cabinet Then power modules can be maintained 4 If cabinet maintenance is needed external maintenance bypass breaker is required If external maintenance bypass breaker is available close external maintenance bypass breaker open the external input breaker and external output breaker then UPS cabinet can be maintained It s recommended that external maintenance breaker are installed as fig 6 ...

Page 46: ...ng from manual bypass mode to normal mode 1 Press in function menu to clear EPO alarm 2 Close bypass breaker and bypass indicator goes steady green 3 Open manual bypass breaker 4 Press the menu in bypass mode UPS transfer to inverter after about 60s 5 Close external battery circuit breaker or internal battery circuit breaker Warning Before opening the manual breaker make sure that static bypass sw...

Page 47: ...er is put to ON and the UPS has mains input then the UPS output is energized 6 8 Operation Instruction for Power Module Maintenance Only a trained operator can perform the following procedures Maintenance guidance for power modules If the system is normal mode and the bypass is normal the redundant number of power module is at least 1 1 Enter in function menu and press to release shutdown power mo...

Page 48: ...r module is big and it need more power when inserting bypass module to make sure tighten connection 6 9 Language Selection The LCD menus and data display are available in 7 languages Simple Chinese English Traditional Chinese Turkish Russian Polish Portuguese Perform the following procedure to select a language needed 1 In main menu press to enter in setting menu on the LCD screen 2 Select LANGUAG...

Page 49: ...history logs The operator control panel is divided into three functional areas as shown in fig 7 1 mimic current path LCD display Menu control and operation button The detailed description of control and display panel is shown in table 7 1 a 3 modules and 6 modules cabinet b 2 modules and 4 modules cabinet Fig 7 1 UPS operator control and display panel Table 7 1 Description of UPS Operator Control...

Page 50: ... working in ECO mode Steady red At least one module s inverter is failure and inverter is not feeding the load Flashing red Inverter is feeding load and at least one module s inverter is failure Off Inverter is not working in all modules Load indicator Steady green UPS output is on and is normal Steady red UPS output is overload and time is over or output is shorten or output has no power supply F...

Page 51: ...e description of LCD icon is shown in table 7 5 Table 7 5 Description of LCD Icons Icon Description Return to main menu page Bypass main output voltage current PF frequency battery information capacity remained time worked days battery temperature ambient temperature load information percent active load reactive load apparent load Information of power module main output load S code module informat...

Page 52: ...ig 7 2 is described in details below UPS system information window UPS information window unit model module numbers unit mode current date and time are displayed The information of the window is not necessary for the user to operate The information of this window is given in table 7 6 Table 7 6 Description of Items in UPS System Information Window Display contents Meaning 300 30 Unit model 300 uni...

Page 53: ...oring version are displayed Shown as below 0 50 100 180 260 300 0 50 100 180 260 300 0 50 100 180 300 223 5 224 6 225 3 49 99 49 99 49 99 0 0 0 0 0 0 0 00 0 00 0 00 50 57 55 0 513 0 220 0 50 260 300 0 50 260 300 0 50 300 220 0 220 2 220 3 49 99 49 99 49 99 0 0 0 0 0 0 0 00 0 00 0 00 50 57 55 0 513 0 220 a Main input information b output information Fig 7 5 main input and output information Submenu...

Page 54: ...ubmenu 0 50 100 180 260 300 0 50 100 180 260 300 Information display 220 5 50 01 2 1 0 31 0 50 100 180 220 6 220 6 Fig 7 7 power module information Module information menu includes input output load internal information S code software version Submenu INPUT OUTPUT LOAD Input and output information include voltage current frequency PF Load information includes load percent active load reactive load...

Page 55: ...000 0000 0000 0000 0000 0000 0000 0000 1111 1111 1111 1111 1111 1011 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1000 0000 0000 0000 1000 0000 0011 1100 0100 a module information b S code of the power module Fig 7 9 module information and S code Enter in to set UPS system It includes DATE TIME LANGUAGE COMM USER BATTERY SERVICE RATE CONFIGURE And submenu BA...

Page 56: ...ting of the AH of the battery Float Charge Voltage Cell Setting the floating Voltage for battery cell 2V Boost Charge Voltage Cell Setting the boost Voltage for battery cell 2V EOD End of charge Voltage Cell 0 6C Current EOD voltage for cell battery 0 6C EOD End of charge Voltage Cell 0 15C Current EOD voltage for cell battery 0 15C Charge Current Percent Limit Charge current percentage of the rat...

Page 57: ... battery LED indicator green flashes If battery is sick or battery is failure UPS will alarm and transfer back to normal mode or transfer to bypass mode Make sure there is not any warns or alarm make sure that battery voltage is higher than 90 of float voltage If battery is normal UPS will transfer back to normal mode after 20 seconds If battery test is failure UPS alarms in the history log Batter...

Page 58: ...t connected 11 Maintenance CB Closed Manual maintenance breaker is closed 12 Maintenance CB Open Manual maintenance breaker is opened 13 EPO Emergency Power Off 14 Module On Less Available power module capacity is less then the load capacity Please reduce the load capacity or add extra power module to make sure that the UPS capacity is big enough 15 Generator Input Generator is connected and a sig...

Page 59: ...al bypass frequency If the measurement is abnormal check the external bypass power supply If the alarm occurs frequently use the configuration software to increase the bypass high limit set point according to the user s suggestions 23 Exceed Tx Times Lmt The load is on bypass because the output overload transfer and re transfer is fixed to the set times during the current hour The system can recov...

Page 60: ...he UPS has over load before alarm happens 38 Inverter Over Temp The N Power Module Inverter Over Temperature The temperature of the inverter heat sink is too high to keep inverter running This alarm is triggered by the signal from the temperature monitoring device mounted in the inverter IGBTs The UPS recovers automatically after the over temperature signal disappears If over temperature exists ch...

Page 61: ...bles are not connected correctly 59 INV DATA CAN Fail DATA communication of inverter CAN bus is abnormal Please check if communication cables are not connected correctly 60 Power Share Fail The difference of two or more power modules output current in system is over limitation Please adjust output voltage of power modules and restart UPS 61 Sync Pulse Fail Synchronization signal between modules is...

Page 62: ... sensor is not connected correctly 79 Inlet Over Temp Inlet air is over temperature Make sure that the operation temperature of UPS is between 0 40 C 80 Capacitor Time Reset Reset timing of DC bus capacitors 81 Fan Time Reset Reset timing of fans 82 Battery History Reset Reset battery history data 83 Byp Fan Time Reset Reset timing of bypass fans 84 Battery Over Temp Battery is over temperature It...

Page 63: ...ed only 97 System Setting Error Manufacturer used only 98 Bypass Over Temp Bypass module is over temperature Please check If bypass load is overload If ambient temperature is over 40 C If bypass SCRs are assembled correctly If bypass fans are normal 99 Module ID Duplicate At least two modules are set as same ID on the power connector board please set the ID as correct sequence ...

Page 64: ... Install SNMP card SNMP card is installed on the front panel of bypass module To install SNMP card 1 Remove the cover of intelligent slot see Fig 8 1 2 Install SNMP card in the slot and tighten it with screws SNMP a 2 slots and 4 slots cabinet b 3 6 slots cabinet Fig 8 1 SNMP card ...

Page 65: ...EC EN AS60950 electromagnetic emission and immunity IEC EN AS61000 series and construction IEC EN AS60146 series and 60950 9 2 Environmental Characteristics Table 9 2 Environmental Properties Items Unit Requirements Acoustic noise level at 1 meter dB 56 0 power module Altitude of Operation m 1000m above sea level derate power by 1 per 100m between 1000m and 2000m Relative Humidity RH 0 to 95 non c...

Page 66: ...Ripple voltage V float 1 Ripple current C10 5 Boost charge voltage V cell VRLA 2 4V cell selectable from 2 30V cell 2 45V cell Constant current and constant voltage charge mode End of discharging voltage V cell VRLA 1 65V cell selectable from 1 60V cell 1 750V cell 0 6C discharge current 1 75V cell selectable from 1 65V cell 1 8V cell 0 15C discharge current EOD voltage changes linearly within the...

Page 67: ...nd providing neutral reference for the output Rated current A 30 380V 60 6 380V 90 380V 45 68 135 380 V 29 400V 58 400V 87 400V 43 65 130 400 V 28 415V 55 5 415V 84 415V 42 63 126 415 V Overload 125 long term 110 long term 130 10mins 130 5 mins 150 1min 150 1min 150 300ms 150 300ms Superior protection bypass line N A Thermal magnetic breaker the capacity is 125 of rated current output IEC60947 2 c...

Page 68: ...iency Air Exchange Rated Efficiency kVA Unit 10 90kVA Efficiency Normal mode dual conversion 95max ECO mode 99 Battery discharging efficiency DC AC battery at nominal voltage 480Vdc and full rated linear load Battery mode 94 5 Maximum air exchange m3 min 4 5 power module 3 02 bypass module ...

Page 69: ... kits are required Set UPS as 3 1 1 3 or 1 1 with software Fig B 1 Power Connection of 2 slots and 4 slots Fig B 2 Power Cables Connection of 6 slots cabinet 3 phases in 3 phases out common input is default setting If need 3 phases in 3 phases out split bypass input remove connecting copper bars between bypass and main input as Fig B 1 and Fig B 2 If need to set UPS as 3 phases in 1 phase out conn...

Page 70: ...et If need to set UPS as 1 phase in 3 phases out split bypass input connect cables as Fig B 1 and Fig B 2 as needed Then set UPS with software as below Enter in RateSetting set output as in Syscode Setting1 set input as in Syscode Setting 2 then confirm the set Note If want to set 6 slots cabinet as 1 1 3 1 please make sure that connect output neutral cable to the input or bypass neutral connector...

Page 71: ...Appendix B Power Connection of Modular System 62 Shield M10U user manual ...

Page 72: ...espective owners All Rights Reserved Publication No UM3PB01 Specifications are subject to change without notice While every precaution has been taken to ensure accuracy and completeness herein Shield assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions ...

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