Liebert UPS System User Manual
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Liebert UPS System User Manual

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Liebert iTRUST UPS System
User Manual
E1-20020516-C-1.0
L i e b e r t C o r p o r a t i o n

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Summary of Contents for Liebert UPS System

  • Page 1 Liebert iTRUST UPS System User Manual E1-20020516-C-1.0 L i e b e r t C o r p o r a t i o n...

  • Page 3: Table Of Contents

    3.1.3 Selection of signal cables ...24 3.2 Cable connections ...24 3.2.1 Power cables ...24 3.2.2 Signal cable...28 3.3 Connection of Single UPS System ...35 Chapter 4 Commissioning of UPS ...37 4.1 Startup Procedure ...37 4.1.1 Explanation of Circuit Breakers ...37 4.1.2 Startup...37...
  • Page 4 6.2 Maintenance...76 6.2.1 Daily maintenance...76 6.2.2 Battery maintenance ...78 6.2.3 Shutdown maintenance...80 Chapter 7 Troubleshooting ...81 7.1 UPS system troubleshooting ...81 7.1.1 Basics...81 7.1.2 Procedures...81 7.2 LED indicator...81 7.2.1 LED display ...81 7.2.2 LED indicator of lightning protection device ...82 7.3 Buzzer alarm ...82...
  • Page 5 Chapter 8 Parallel System ...87 8.1 System Introduction...87 8.1.1 Basics...87 8.1.2 Theory of Operation...88 8.1.3 Operation modes ...90 8.2 Installation ...91 8.2.1 Cabinet installation ...91 8.2.2 Electrical installation ...92 8.3 External Power Distribution ...93 8.4 Start up of Parallel Operation System ...93 8.5 Using the Parallel Operation System ...94 8.5.1 Switch on the Parallel System ...94 8.5.2 Shutdown the Parallel Operation System ...95...

  • Page 7: Chapter 1 Introduction

    Chapter 1 Introduction 1.1 Basics The Liebert iTrust UPS System is connected between the utility source and the critical load to provide uninterruptible power to the load. The power from the UPS being free of voltage and frequency variation and disturbances from utility. The UPS has an output isolation transformer to provide galvanic isolation between the load and utility.

  • Page 8: Operation Theory

    1.3 Operation Theory The UPS circuit diagram is shown in Figure 1-2. Q3BP The utility source is input at Q1 and flows through the fuse, the transformer, inductor and into the high frequency rectifier which will convert the AC power into DC power.

  • Page 9: Structure And Layout

    Multi-communication ports and management software make it possible for the customer to monitor the UPS performance locally or remotely. The Liebert UPS uses full digital, discrete and on-line parallel operation technology. In parallel operation, several UPS units input parallel logic signals and cross current detection signals through parallel operation boards to enable a maximum of four UPS units to operate in parallel.

  • Page 10: Operation Modes

    1:Fan 2:rectifier 5: two auxiliary power supply boards ULW2L61M5 6: D level lightning protection device SPD12Z 8:battery input terminals 10:rectifier input circuit breaker Q1 12:Inverter 14: parallel board ULW2L61M3 16: magnetic core 18:operation keypad board 20: monitoring board ULW2L61U2 22: Fuse NT100 1.5 Operation Modes...
  • Page 11 Mains 2. Battery Mode When the utility fails, the UPS system will switch to battery mode without interruption and the battery will power the load through the inverter. The UPS can return to normal mode automatically when the utility returns to normal, as shown in Figure 1-6.
  • Page 12 Chapter 1 Introduction 4. ECO Mode If the load has no requirement for power quality but has a high requirement for efficiency, then the UPS can be set in ECO mode. power the load through the static bypass switch and the rectifier will charge the batteries.
  • Page 13 Chapter 1 Introduction 6. United Power Mode When the utility is not available and the capacity of the generator set is inadequate to support the load, the battery will power the load together with the generator automatically. The operating time under this mode should not exceed the autonomy time of the batteries, as shown in Figure 1-10 Note : This mode can only be set by qualified personnel only.

  • Page 14: Basic Functions

    Bypass Mains 1.6 Basic Functions Battery Management Function - The UPS has advanced battery management functions including battery fault detection and backup time forecast. Soft Start Function - Complete delay soft start function can reduce the surge to the UPS unit and utility source. Alarm and Protection Function - The UPS can generator audible and visual alarm through LCD, input/output contacts and network transmission.
  • Page 15 Parameters of Liebert iTrust UPS are given in Table1-1 Capacity Model Input Voltage AC Power Input Power Factor Harmonic Current Rectifier Voltage Range input Input current limiting frequency range Input Voltage Input Voltage Range Bypass input AC Power Input Frequency range...
  • Page 16 Capacity Model Overload capability(inverter) Overload capability(bypass) Output Ratio of output current peak value to RMS value Transfer time(normal mode) Transfer time(ECO mode) System System efficiency(linear load) Efficiency in battery mode(linear load) Display Conduction Radiation Harmonic EMC/EMI Immunity MTBF(inverter) MTBF(Single UPS) MTBF(1+1 parallel operation system) Safety...
  • Page 17 Capacity Model Insulation Resistance Dielectric Strength Surge Immunity System Protection index Number of battery cells Installation Cable access mode 2. Electrical Parameters For designing of utility power source, air-conditioner, input and output power distribution and cable selection, please refer to Table 1-2 Model UL33-0200L UPS rated power...

  • Page 19: Chapter 2 Cabinet Installation

    Chapter 2 Cabinet Installation 2.1 Environmental Conditions Operating Temperature : 0~ 40°C Storage Temperature: -40~ 70°C(with no battery) Relative Humidity:5%~95%, no condensation Cooling method : Fan cooling Elevation:1500m Maximum Tilt : 5 degrees Pollution :Class II The UPS should be installed in a cool place with good ventilation, low humidity and free of dust.
  • Page 20 Chapter 2 Cabinet Installation External Dimensions of 40/60kVA UPS are shown in Fig. 2-3 and its installation position is shown in Fig. 2-4. Figure 2-1 4 fixing holes 4 screws for levelling feet Figure 2-2...
  • Page 21 Chapter 2 Cabinet Installation Figure 2-3 40/60kVA UPS Outline Dimension 4 fixing holes 4 screws for levelling feet Figure 2-4 40/60kVA UPS Fixing Holes...

  • Page 22: Transportation

    2.4 Transportation 1. Hoisting the UPS Prepare four cables of length 1.5 m and the weight bearing capacity of each cable of 1.5 tons. The UPS has four lifting rings and should be installed at the top of the 2. Transportatio with Forklift The UPS can be raised by forklift in four directions –...
  • Page 23 Chapter 2 Cabinet Installation 2. Fixed position without a base In earthquake prone areas, place UPS on a conduit as shown in Figure 2-6. At the edge of the conduit, drill holes for fixing expansion bolts Hoist the cabinet at least 250 mm to remove the four leveling bolts. Take off the plastic cover of the installation holes on the beam.

  • Page 24: Cable Access

    1. Finished state 3. Nut 5. Flat washer 2.6 Cable Access The UPS has various methods of cable access. One is bottom access where the cables are routed in conduit from the bottom of the UPS. This is shown in Figure 2- Another is top access where the cables are routed on cable trays from the top and into the UPS as shown in Figures 2-9.

  • Page 25: Ventilation

    Chapter 2 Cabinet Installation Input cable Battery cable Output cable Signal cable Fig. 2-9 UPS top cable output 2.7 Ventilation The cooling air comes into the UPS from the bottom and the fan circulates the cool air inside the UPS. The air is expelled out of the UPS from the back. Table 2-3 shows the relationship between the power consumed and air intake.

  • Page 26: Layout Of Cabinet

    Chapter 2 Cabinet Installation 2.8 Layout of Cabinet Besides the UPS cabinet, there are also battery cabinets, input/output distribution cabinet and cabinet for bypass transformer. All these cabinets should be laid out correctly. The layout of battery cabinet and UPS cabinet is shown below. 1.
  • Page 27 Chapter 2 Cabinet Installation Battery cabinet 1 Battery cabinet 2 UPS cabinet Fig. 2-12 Layout 2...

  • Page 29: Chapter 3 Electrical Assembly

    Chapter 3 Electrical Assembly This chapter introduces the connection methods of the power and signal cables. 3.1 Selection of cables 3.1.1 Current carrying capacity of cables The current carrying capacity can be selected according to the voltage drop and permissible temperature increase. Table 3-1 Current carrying capacity of cables Current carrying...

  • Page 30: Selection Of Signal Cables

    protective earth cable and lightning protection earth cable, should be 0.5 times of phase cable. The relationship between the current and cross-sectional area is shown in Table 3- 20kVA Name Current Battery Bypass Output Input Neutral line Earth cable 3.1.3 Selection of signal cables Signal cables should use shielded multi-conductor cables.
  • Page 31 Chapter 3 Electrical Assembly Battery cables Fig. 3-1 20/30kVA UPS bottom cable output Battery cables Rectifier input Fig. 3-2 40/60kVA UPS cable connection at bottom 2. Cable routing Bottom entry configuration – the cables are input and output from the bottom of the UPS Top entry configuration –...
  • Page 32 3. Cable connection Note All the switches should be switched off during cable connection. 1. Feed cables Feed cables according to the cable entry mode, with reference to Figures 2-7, 2-8, 3-1, 3-2 2. Assembling cable lugs to cables First strip the insulation layer 20 mm from the end. Then insert the conductor into the cable lug.
  • Page 33 Chapter 3 Electrical Assembly Input power cable Fig. 3-3 Power cable connection of One branch utility source 5. Connect the Load to the U, V, W terminals of UPS output breaker Q5. 6.Connection of battery cables The positive and negative cables of batteries are connected to the Positive and Negative terminals of JX3 respectively.

  • Page 34: Signal Cable

    Fig. 3-5 Wiring inside cabinet Generally, the separated neutral mode is better for human safety. The united connection mode is better for the UPS system. If there is C-level lightning protection unit inside the UPS, the cabinet protection earth and the lightning protection earth should be connected together.
  • Page 35 Chapter 3 Electrical Assembly Fig. 3-6 Layout of signal cables of 20/30/40/60kVA UPS 2. Connection method 1.Parallel connection method Open the door of the UPS to see a circuit board ULW2L61M3. On the board, 15- pin connectors P1 and P2 are used to connect the parallel logic cables. 9-pin connectors P3 and P4 are used for connecting the load sharing cables.
  • Page 36 Chapter 3 Electrical Assemble 2.Connection of serial connection cables The monitoring board ULW2L61U2 is shown in Figure 3-8, where the locations of RS232, RS485 and input and output contacts are marked. The user can connect the cables with reference to this board. communication cable RS485- communication cable RS485+ Fig.
  • Page 37 Chapter 3 Electrical Assembly 2) Connection of modem MODEM or SNMP Monitoring board SNMP cables SNMP cables Monitoring board MODEM or SNMP 40/60kVA Front view when 20/30kVA Front view when right door is opened Front door is opened Fig. 3-10 Installation of MODEM or SNMP 1.
  • Page 38 Chapter 3 Electrical Assemble 3）Connection of SNMP Card Installation of SNMP card Unpack the SNMP card and place it in the iron case shown in Figure 3-10 Connect the cables On the monitoring board, there is a jack J22 with a cable to plug in directly to the SNMP card, after the SNMP Card is installed.
  • Page 39 Chapter 3 Electrical Assembly Table 3-4 Definitions of input/output contacts Connector Name of contacts Normally closed contacts battery low alarm Central contacts for battery low alarm Normally open contacts battery low alarm Normally closed contacts for battery mode Central contacts mode Normally open...
  • Page 40 Chapter 3 Electrical Assemble Connector Name of contacts Central contacts for overload Normally open contacts overload Normally closed contacts for generator mode Central contacts for generator mode Normally open contacts generator mode +24V power for environmental signal 24V power for environmental signal 1 24V power for environmental signal 2...

  • Page 41: Connection Of Single Ups System

    2. Temperature Sensor TMP12Z Fig. 3-13 Installation of TMP12Z 3.3 Connection of Single UPS System The circuit breaker of bypass source is selected according to its disconnecting capacity and short circuit current. The selected circuit breaker should be able to...

  • Page 43: Chapter 4 Commissioning Of Ups

    Chapter 4 Commissioning of UPS 4.1 Startup Procedure 4.1.1 Explanation of Circuit Breakers From the layout of Figure 1-3 and Figure 1-4, the startup of UPS has connections with the following circuit breakers Q1 : Connects rectifier to Utility source Q2 : Connects bypass to Utility source Q5 : Connects UPS output to the Load Q3BP : Connects bypass input source to the load switch...

  • Page 44: Setting The Functions

    Step 5 : After the UPS transfers from bypass to inverter, the bypass indicator turns off, and the inverter and the load indicator turns on. The transfer may fail if the phase rotation of bypass and inverter output are different. During operation, if the AC power recovers after failure, the rectifier will restart automatically after some time.
  • Page 45 Chapter 4 Commissioning of UPS UL33-0400L Inv. On Local System Com. Adress Set Battery Records Date & Time Set Settings Input Breaker Closed Byp. Breaker Closed Mains Volt. Abnormal UPS in Battery Mode Battery low Fig. 4-2 Setup Language Manual Battery Self Test : Select “start self test” or “stop self test” Contrast Adjustment : Change the display contrast according to the 11 bars, as shown in Figure 4-4.

  • Page 46: Functional Checks

    Callback number 1 : the first callback number can be a mobile phone number, a fixed line phone number, a beeping pager or an extension telephone. The length of the telephone number is 15 digits. remaining blanks digits has to be entered with an asterisk “*” Callback number 2 : same as for callback number 1 Callback number 3 : same as for callback number 1 4.3 Functional checks...

  • Page 47: Check The Function Of The Display Panel

    4.3.1 Check the function of the display panel Press the button “inverter shutdown” for 2 seconds and check that the inverter stops. Rectifier Bypass indicator indicator UL33-0400L UL33-0400L Inv. On Ä æ ± ä ¿ ª Æ ô Ö ÷ Â · Ê ä È ë Local Ï...
  • Page 48 Chapter 4 Commissioning of UPS 1. Switch from normal mode to battery mode. Switch off Q1 to enter battery mode and after a few seconds, switch on Q1 again to return to normal mode 2. Press “inverter shutdown” button to switch to bypass mode. After a short while, start inverter again to return to normal mode.

  • Page 49: Chapter 5 Operation Of Display Panel

    Chapter 5 Operation of Display Panel 5.1 Display panel 5.1.1 Layout of Display Panel The display panel of the UPS is shown in Figure 5-1. 1:LCD 3:Battery operation indicator 5:Inverter operation indicator 7:Buzzer 9: cover used for preventing wrong operation of Emergency shutdown button 10:Emergency shutdown button (EPO) 12:Inverter shutdown button 14:Alarm mute button...

  • Page 50: Led Indication

    Rectifier Bypass indicator indicator UL33-0400L UL33-0400L Inv. On Ä æ ± ä ¿ ª Æ ô Ö ÷ Â · Ê ä È ë Local Ï à µ ç Ñ ¹ V Å Ô Â · Ê ä È ë System Com.

  • Page 51: Functional Keys

    Chapter 5 Operation of Display Panel Flashing Green – End of battery discharge Red – Battery Abnormal (overtemp, low battery, contactor fused) Off – Battery Normal but not in operation Inverter LED Green – Inverter powers the load normally Flashing Green - Inverter standby Red –...

  • Page 52: Alarm Buzzer

    5.1.4 Alarm Buzzer If there is no alarm sound, it means that either the alarm is muted or the system is not in a fault condition There are three types of sound from the buzzer 1.Single click - The sound can be heard when any button is pressed 2.
  • Page 53 Chapter 5 Operation of Display Panel UL33-0400L Inv. On Menu Display Window Mains Bypass Output Local System Battery Input Breaker Close Byp. Breaker Close Current event Output Breaker Open window UPS in Normal Mode Batt. Boost Charging Fig. 5-4 Sections of the LCD The LCD are divided into five windows : UPS information window (restricted for factory use) Keypad window (restricted for factory use)

  • Page 54: The Displayed Information

    5.2 The displayed information 5.2.1 Opening display At power up of the UPS, the opening display is shown in Figure 5-5. 5.2.2 Main Menu Display After the UPS is power up and self test is completed, the main menu will be displayed, as shown in Figure 5-6.

  • Page 55: Menu Keys Display Window

    5.2.4 Menu Keys Display Window The window is displayed in Figure 5-6. Use the arrow-up and arrow-down keys to select from the menu and the measured information will be displayed. For example, if the user the first menu (main rectifier input) then the measuring window will display the input line-line voltage and the current.

  • Page 56: Information Of Main Menu

    5.2.5 Information of main menu Eight main menu will be displayed on the LCD. They are Rectifier input Bypass input AC output Load of single module UPS system Parallel load Battery data History Log Function setup Pressing F1 can switch from present window to measuring sub-window.
  • Page 57 Chapter 5 Operation of Display Panel AC Output - displays three phase line-neutral voltage, line current, frequency, power factor and line-line voltage, as shown in Figure 5-11 UL33-0400L Inv. On Mains Bypass Output Local System Battery Input Breaker Close Byp. Breaker Close Output Breaker Open UPS in Normal Mode Batt.
  • Page 58 Chapter 5 Operation of Display Panel UL33-0400L 2001-11-08 Inv. On Units: Mains Batt. Volt V 423 Bypass Batt. Curr. A 4.56 Output Batt. Temp. C 23.2 Local Batt. Boost Charging System Battery Input Breaker Close 11£ - 0 8 12:09 11£...
  • Page 59 Chapter 5 Operation of Display Panel UL33-0400L Inv. On Mains Bypass Output Local System Battery Input Breaker Close Byp. Breaker Close Mains Volt. Abnormal UPS in Battery Mode Battery Low Fig. 5-17 Pre-alarm when battery discharges to end of discharge voltage History Log –...

  • Page 60: Function Setup

    5.3 Function Setup In the Menu Display Window select “Function Setup”, pressing F1 key to switch the present window to Measuring and Setup Window and modify each settable items. Pressing F3 key can scroll through all the settable items (total number of the settable items is 12).

  • Page 61: Address Setup

    5.3.2 Address setup According to the information displayed on Fig.5-22, select the “Equipment Address Setup” and pressing F3(UP) or F2(DOWN) to modify the address of the equipment, and then pressing F4 to confirm and exit. If you do not want to modify the language, pressing F1(ESC) to escape.
  • Page 62 Chapter 5 Operation of Display Panel UL33-0400L Inv. On Local System Battery Records Settings Input Breaker Closed Byp. Breaker Closed Mains Volt. Abnormal UPS in Battery Mode Battery low Fig. 5-24 Setup the date 1 Pressing F4 to let the date to be able to be modified, as shown in Fig. 5-25. UL33-0400L Inv.
  • Page 63 Chapter 5 Operation of Display Panel After escaping the modification state, the date displayed by the UPS basic information window has become a new date. Then use F2 (move left) and F3 (move right) keys to move the cursor to the location of “second”, as shown in Fig. 5- UL33-0400L Inv.

  • Page 64: Manual Battery Self-Test

    After modification, pressing F1(ESC) to exit and the F1 key will become the switching key. Pressing F1(switch) to switch the present alarm Window. Pressing F3 may enter the function setting of next interface. 5.3.4 Manual battery self-test Setting of “manual battery self-test” is shown in Fig. 5-31. The Alarm Subwindow will record the setting.

  • Page 65: Contrast Adjustment

    5.3.5 Contrast adjustment The contrast adjustment is shown in Fig. 5-32. Pressing F2(move left) and F3(move right) to adjust the bars shown the figure below, thus the contrast is adjusted. Store the adjusting results after confirmation and exit the contrast adjustment interface. 5.3.6 History log Setting of the range of “history log”...

  • Page 66: Background Communication Setup

    5.3.7 background communication setup Background communication setup includes setting up the communication mode(MODEM or RS232) , baud rate selection(9600, 4800, 2400 and 1200), call- back times(1-5 times), as shown in Figure 5-34. Pressing F4(modification key) to start setting the background communication mode, pressing F2 (move left) and F3 (move right) to move the cursor to the expected value, and pressing F4(Enter key) to confirm.

  • Page 67: Call-Back Number Setup

    5.3.8 Call-back number setup Call-back numbers include call-back number 1, call-back number 2 and call-back number 3, shown in Fig. 5-35. The length of telephone number is 15 digits, the number can be that of fixed phone, mobile phone, BP phone or internal extension phone.
  • Page 68 Chapter 5 Operation of Display Panel UL33-0400L Inv. On Local System Battery Records Settings Input Breaker Closed Byp. Breaker Closed Mains Volt. Abnormal UPS in Battery Mode Battery low Fig. 5-36 Setup fault call-back number 1 Pressing F4 key to confirm and save the changed parameter, and then the functions of keys will be re-defined again, as shown in Fig.

  • Page 69: Prompt Window

    Move the cursor to the corresponding bit to modify the number and confirm, then the 0755 8787001 can be set, fill in the “*” character in other blank bits, as shown in Fig.5-39. Pressing F1(ESC) to exit the setup of the fault call-back number 1. Other fault call-back numbers will be set in the same way.
  • Page 70 Chapter 5 Operation of Display Panel UL33-0400L Inv. On Mains Bypass Local System Battery Input Breaker Close Byp. Breaker Close Output Breaker Open UPS in Normal Mode Batt. Boost Charging Fig. 5-40 Bypass to inverter prompt From inverter to bypass mode with interruption: If the bypass voltage or frequency exceeds the synchronized range and the UPS is in inverter mode, the system must let the user to confirm and accept the power interruption danger before pressing the inverter stop key to shutdown the output of...
  • Page 71 Batt. Boost Charging Fig. 5-43 UPS capacity inadequate Load capacity higher than that of single module UPS system: If the UPS is in bypass operation mode, and the load capacity exceeds the total capacity of one or more than one UPS units, the LCD of the UPS that start first will display a Prompt window, as shown in Fig.

  • Page 72: Events And State Information

    Fig. 5-44 Load capacity exceed that of single module UPS system 5.5 Events and State Information: Two kinds of UPS events and status information: Current events and historic events. Current events are the current status information of UPS and the events that happen only just now.
  • Page 73 Chapter 5 Operation of Display Panel Event Start through keypad Start through keypad failed Shutdown through keypad Emergency shutdown Fault clear Manual mute Manual mute cancel Confirm the interrupted transfer Single UPS shutdown confirmation Parallel operation system shutdown confirmation Manual battery self-test Stop battery self-test manually Note: If the same event occurs once again, it will be displayed on the current event and alarm display window according to the time sequence.
  • Page 74 Chapter 5 Operation of Display Panel State Bypass mode Normal mode Battery mode United power mode Bypass and inverter all shutdown Output power interruption Battery is under self-test Generator connection Generator exit Generator run Non-charging state Equalization charging state Float charging state Input circuit breaker closes Input circuit breaker opens Output circuit breaker closes...

  • Page 75: Chapter 6 Maintenance

    Chapter 6 Maintenance This chapter mainly introduces the daily using and maintenance of UPS and the operation inside the UPS is not covered here. If maintenance should be done to the UPS, Q1, Q2 and QF1 should be disconnected, and then wait for 8 minutes until there is no high voltage inside the UPS.

  • Page 76: Shutdown

    Chapter 6 Maintenance 6.1.2 Shutdown 1. Shutdown in normal mode When the UPS requires periodical checking or needs to stop operation, the shutdown process in normal mode is given below: 1.Press the “inverter shutdown” button on the UPS panel for longer than two seconds, shutdown the inverter and the system transfers to bypass mode.

  • Page 77: Transferring Between Operation Modes

    The UPS can transfer among various operation modes after it is in normal mode. The following operations can be done if the input power source of UPS meets the requirements and the load capacity is lower than that of single module UPS system. 1. From normal mode to battery mode Switch off Q1, the UPS can transfer from normal mode to battery mode automatically.

  • Page 78: Mute

    begins to power the load. Press the “inverter start” if the user wants the inverter to operate. 6.1.5 Mute The buzzer sounds when the UPS has faults. The user can press the “Mute” button for two seconds to silence the sound. If the user press the key again, the sound can be heard again.

  • Page 79: Monitoring System

    6.1.7 Monitoring system 1. Background communication The monitoring system of this UPS system provides one RS232 port and one RS485 port (the definition of the port is in Section 3.4.3), several input and output dry contacts (refer to Section 3.4.4). The user can introduce the signal to the nearest management office to conduct equipment management.
  • Page 80 RS485 bus. Any UPS module can be nominated as a master UPS. The user can use any communication mode to get the information of any UPS module through this master UPS. The monitoring method of parallel system is shown in Fig.6-2. Fig. 6-2 Monitoring of Parallel UPS System...

  • Page 81: Input And Output Contacts

    Chapter 6 Maintenance 6.1.8 Input and output contacts The functions of input and output contacts are introduced in Chapter 3. 1. Output dry contact This UPS provides 8 kinds of dry contacts output and the definition is given below: Battery low: This signal is active when the pre-alarm of UPS battery occurs; Battery mode: This signal is active when the battery powers the load;...

  • Page 82: Temperature Measuring

    Emergent stop: If the user is in short distance, short connecting the “UCTRH” and “UCTRL” can make the UPS shut down. Relay dry contacts should be used here. Note: The user should be careful when using this function. The power will be interrupted completely once the emergency shutdown happens.
  • Page 83 Chapter 6 Maintenance 5）Check whether all the fans operate normally. The life of the fan in continuous operating state is 20000—40000 hours and will be shortened if the fan operates in high temperature environment. 2. Weekly checking 1）Measure and record the battery charging voltage; 2）Measure and record the battery charging current;...

  • Page 84: Battery Maintenance

    Chapter 6 Maintenance Cable and connectors: Check whether the cable is aged, damaged or burnt; check whether the connector of the PCB is secure; PCB: Check the cleaness and completeness 7）Use vacuum pump to clear the dirt on the surface; 8）Switch on the UPS again and let the inverter powers the load according to the start-up process of UPS;...
  • Page 85 Chapter 6 Maintenance 3）Keep the ambient temperature between 15℃ and 25℃. 4 ） To prevent small current discharge, continuous battery discharge time exceeding 24 hours is prohibited. 5）Please contact the distributor if the battery backup time is greatly shortened, or the UPS LCD displays “battery needs to be replaced”.

  • Page 86: Shutdown Maintenance

    For large capacity UPS, periodical checking is required to ensure the normal operation and proper condition. Notify us if any fault is found. In order to maintain the uninterrupted power supply to the load, please shut down the UPS according to the following procedures: 1.Press the “inverter shutdown”...

  • Page 87: Chapter 7 Troubleshooting

    Chapter 7 Troubleshooting 7.1 UPS system troubleshooting The following information are only for service engineers who are trained in the repair and troubleshooting of the UPS. The maintenance engineer must be familiar with the UPS because the UPS is rather complicated.

  • Page 88: Led Indicator Of Lightning Protection Device

    Rectifier indicator: If it turns red, that means the rectifier fails; Battery indicator: If it turns red, that means the battery is abnormal; Inverter indicator: If it turns red, that means the inverter fails; Load indicator: If it turns red, that means overload occurs; Alarm indicator: If it turns red, that means the system fails;...

  • Page 89: Lcd Indication For Fault Information

    7.4 LCD indication for fault information The LCD on the UPS displays the fault information of Table 7-1 and Table 7-2. The user should locate and analyze the fault according to the tables and feedback the fault information to our service engineers. No.1 Fault description Communication of...
  • Page 90 No.1 Fault description Bypass voltage or frequency is out Bypass of normal range and inverter output unsynchronized is not synchronized with the bypass output. Bypass Bypass ratings exceed exceeds the normal range and the the normal range bypass will not power the load anymore.
  • Page 91 Auxiliary contactor Auxiliary contactor abnormal can’t abnormal be closed or opened normally Auxiliary power supply At least one auxiliary power supply 1 fails fails The IGBT of rectifier has over Rectifier over current current resulting in the shut down of rectifier.
  • Page 92 Table 7-2 Fault of parallel operation system Reasons occurs Disconnect the load of low priority, maintain the power supply to important load module If the parallel operation system transfers to bypass mode, and the operation condition enables, all the UPS modules can recover to normal mode synchronously.

  • Page 93: Chapter 8 Parallel System

    4）The UPS monitoring module (optional) can monitor the system parameters of the whole system. 5）Any single module UPS system in the parallel system can be designated as the host for communication with remote computer. The total load current, number of...

  • Page 94: Theory Of Operation

    C hapter 8 Parallel System UPS in the system, and operation condition of each unit can be monitored through the remote computer. 8.1.2 Theory of Operation 1. Parallel System consisting of two units This is the most frequently used configuration and its operation theory is shown in Figure 8-1 Fig.
  • Page 95 Chapter 8 Parallel System Fig. 8-2 Redundancy operation mode This system can improve the system reliability noticeably. In normal condition, each UPS does not work at full load, so even if the load is increased, the system will not transfer to bypass. When X number of UPS shuts down due to failure, the remaining N numbers of UPS can still powers the load.

  • Page 96: Operation Modes

    Battery mode: The batteries of the system powers the load through inverters of all the UPS units. The system operates at nominal frequency. Bypass mode: The condition to transfer to bypass mode is same with that of single module UPS system. The bypasses of all the UPS units power the load.

  • Page 97: Installation

    1. Parallel operation system with two UPS units The layout of 40/60 kVA UPS system is shown in Fig.8-5. Two UPS units are placed in the middle side by side. Each battery cabinet is placed next to the UPS unit. The battery cabinet should be placed in front of or behind the UPS cabinet if considering capacity expansion.

  • Page 98: Electrical Installation

    2. Signal cables Wiring of signal cables is the same with that of single module UPS system. Parallel connection cables should be connected. You can see the holes for parallel connection cables when opening the front door of the UPS system.

  • Page 99: External Power Distribution

    The specifications of the switch are given in Table 8-2. Capacity of output circuit breaker Single module UPS system Parallel operation modes 8.4 Start up of Parallel Operation System Check the input and output wiring of each UPS unit.

  • Page 100: Using The Parallel Operation System

    8.5 Using the Parallel Operation System The user can use the UPS that has start up. The using methods of parallel system are the same with that of single module UPS system. 8.5.1 Switch on the Parallel System 1. Start from utility The process of switching on the parallel system that has no load is same with the start up process.

  • Page 101: Shutdown The Parallel Operation System

    When starting the parallel operation system with load, start each UPS unit one by one, and the start process is same with that of starting single module UPS system. If the inverter capacity is smaller than the load capacity, the inverter indicator will flash until the total capacity of the inverters that have start is bigger than the load capacity.

  • Page 102: Transferring Between Operation Modes

    Press the “inverter shutdown” to shut down the inverter and the system transfers to bypass mode; Switch off each UPS unit’s Q1 and the QF1 of battery cabinet; Switch on each UPS unit’s Q3BP； Switch on each UPS unit’s Q2 and Q5； AT this time, the user’s load is totally dependent on the maintenance bypass of the UPS;...

  • Page 103: Repairing The Failed Ups Unit In Parallel Operation System

    Chapter 8 Parallel System 2. Normal mode to bypass mode Press the “inverter shutdown” button on the UPS panels one by one, all the UPS can transfer to bypass mode. In the above operation, if the total capacity of all the inverters is smaller than the load capacity, all the UPS unit will transfer from normal mode to bypass mode.

  • Page 104: Emergency Shutdown

    C hapter 8 Parallel System Note At this time, the input and output terminals of this failed UPS unit are still energized. Switch off the unit’s input and output circuit breakers if these terminals may be touched during maintenance. 2. After repairing the failed UPS, connect it to the parallel operation system again After repairing the failed UPS, the procedures to connect it to the parallel operation system are given below:...

  • Page 105: Fault And Fault Process Methods

    “4”- Normally closed contacts for common alarm 8.5.6 Fault and Fault Process Methods The faults of single module UPS system is given in Chapter 7. The faults that specially belong to the parallel operation system are given in Table 8-3. If some UPS unit has fault, it can exit the system and other units can maintain the normal operation mode.
  • Page 106 The board is damaged. board fails Reasons Fault processing Disconnect the load of low priority, maintain the power supply to important load parallel transfers to bypass mode, and the operation condition enables, all the UPS units can recover to normal mode synchronously.

  • Page 107: Chapter 9 Optional Parts

    Chapter 9 Optional Parts 9.1 Battery 9.1.1 Capacity selection Calculate the discharging current according to rated load capacity and then select the battery according to the current and the battery backup time required by user. There are various specifications of battery, we recommend that 30 12V battery cells should be connected in series to form a battery string.

  • Page 108: Battery Cabinet

    9.2 Battery cabinet 9.2.1 External Dimensions The UPS system has two kinds of battery cabinets that are UF-B0100-30 and UF- B0065-30 respectively. The External Dimensions are given in Fig. 9-1 and Fig. 9-2 respectively. The structural parameters are given in Table 9-3.

  • Page 109: Installation Of Battery Cabinet

    4 fixing holes 4 levelling bolts 9.2.2 Installation of battery cabinet The requirements for the locations of battery cabinet are the same with those of UPS cabinet, so are the installation and fixing methods. Install the cabinet with reference to the Fig. 9-1 and 9-2 and Fig. 2-5. The battery cabinet exerts its weight on the floor through four leveling bolts(40mm diameter).
  • Page 110 Chapter 9 Optional Parts General Layout Fig.9-3 Battery layout inside battery cabinet UF-B0100-30 can hold 30 12V/100Ah maintenance free batteries. The voltage can be 360V after the batteries are connected in series. The batteries are placed in 4 floors as shown in Fig.9-4. Follow the steps below to connect the batteries between different floors and connect the battery switch: output...
  • Page 111 Chapter 9 Optional Parts a. Unpack the battery, measure the battery voltage, charge the battery before installation if the single battery cell voltage is lower than 2.13V(each battery has 6 cells, 12.8Vdc); b. Open the front door, remove the back door and cover, switch off all the battery switches, clear the battery cabinet and take out the accessories(battery connection cables, cable sleeves and nylon fastener)inside the cabinet;...

  • Page 112: Snmp Card And The Software

    provided by battery manufacturer. The battery output circuit breaker should be made separately. The method is used if the required backup time is longer than 2 hours. The connection cables between battery and UPS will not be provided in accessories. Refer to Table 3-2 in Chapter 3 to select the battery cables. 9.3 SNMP Card and the Software UPS SNMP card UF-SNMP111 is inserted into the slot for SNMP card in the UPS.

  • Page 113: Network Software

    Support SNMP, HTTP, TFTP and Telnet protocols and can monitor the UPS through the UPS network monitoring software (UPSiteCenter), NMS and Web explorer（IE and Netscape）. The SNMP card can be upgraded online; Provide the computer safety protection functions. Provide the computer safety shutdown software for Windows, UNIX and Linux together with SNMP card.

  • Page 114: Temperature Sensor Tmp12Z

    b. Set up the fault call-back parameters. The monitoring system can realize fault call-back functions through the MODEM. When the UPS has fault, it will dial the user automatically and require actions. 9.6 Temperature sensor TMP12Z TMP12Z temperature sensor is an ambient temperature detection device developed by Avansys.

  • Page 115: Introduction Of Spd24Z

    9.7.1 Introduction of SPD24Z The SPD24Z lightning protection box has a switch(3) on its panel, a lightning protection indicator(green, 1) and fault indicator（red,2）. Its top cover has 3 holes for cable input（I～III） and its bottom has 3 holes for cable output. Its rear side has two holes for fixing the device, as shown in 9-7.
  • Page 116 h. Check whether the cables are well connected. Use a 4mm cable to earth the lightning protection device. Close the cover. Note 1. All operations should be done with power off and confirm there is no dangerous voltage on the neutral line。 2.

  • Page 117: Using And Maintenance

    9.7.3 Using and Maintenance 1. Ambient condition a. Ambient temperature ranges from -40℃ to 40℃; b. Elevation lower than 1000m; c. The utility frequency is 45～65Hz; d. The highest wind speed not exceed 35m/s. 2. Maintenance 1) The lightning protection device operates normally if the green indicator illuminates while the red indicator is off;...

  • Page 118: Chapter 10 Service After Sales

    Chapter 10 Service after Sales 10.1 Abnormal Fault Handling If the UPS is abnormal without alarm indication, check according to Table 10-1. No.1 Fault description Utility switch is put to “ON”, no display by LCD, no self test of system UPS has no output power and no alarm Abnormal sound and smell UPS has internal fault...
  • Page 119 Table 10-2 Fault information of Single module UPS system No.1 Fault description Ambient over-temperature over-temperature of UPS room Environment parameter 1 Environment parameter channel 1 abnormal has alarm Environment parameter 2 Environment parameter channel 2 abnormal has alarm Environment parameter 3...
  • Page 120 No.1 Fault description The battery life is reduced due to aging, which may endanger the Battery needs to be normal operation of UPS. Warn replaced the user that the battery is abnormal replaced. Batteries are not connected. No battery The battery discharges to pre- alarm point （...

  • Page 121: Warranty

    No.1 Fault description Output surge current Transfer to bypass due to surge Neighbouring UPS module requires transfer bypass mode User’s wrong operation The actual transfer times exceed permissible transfer times per hour 10.2 Warranty We provide 1 year of free service for our UPS (including the battery). The above warranty shall not apply in the following circumstances: The battery is provided by user;...

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