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Gtec LibraPro User Manual

From 10 to 100kva single phase output
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LibraPro
from 10 to 100kVA single phase output
User Manual

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Summary of Contents for Gtec LibraPro

  • Page 1 LibraPro from 10 to 100kVA single phase output User Manual...
  • Page 2 Pag. 2 / 57 0MNMPMK10NPENUB 00...
  • Page 3 Thank you for choosing our product. The factory is highly specialized in the development and production of uninterruptible power supplies (UPS). The UPSs of this series are high quality products, carefully designed and manufactured to ensure optimum performance. Symbols used in the manual In this manual, some operations are shown by graphic symbols to alert the reader to the dangerous nature of the operations: Possibility of serious injury or substantial damage to the device, unless adequate...
  • Page 4 Definition of “operator” and “specialized technician” The professional figure responsible for accessing the equipment for ordinary maintenance purposes is defined with the term operator. This definition covers personnel that know the operating and maintenance procedures for the equipment, and that have been: 1.
  • Page 5 GENERAL PRECAUTIONS This manual contains detailed instructions for the use, installation and start-up of the UPS. Read the manual carefully before installation. For information on using the UPS, the manual should be kept close at hand and consulted before carrying out any operation on the device. This device has been designed and manufactured in accordance with the standards for the product, for normal use and for all uses that may reasonably be expected.
  • Page 6 This page is left blank intentionally Pag. 6 / 57 0MNMPMK10NPENUB 00...

  • Page 7: Table Of Contents

    3.6.5 Frequency converter (from 50 to 60Hz or vice versa) ..............29 Personalizations ......................30 Procedure to transfer the load from LIBRAPRO onto maintenance by-pass..... 30 UPS and load shutdown ....................31 3.10 Block diagram ....................... 32 3.11 Components of the block diagrams ................33 0MNMPMK10NPENUB 00 Pag.
  • Page 8 ..............36 IN PARALLEL CONFIGURATION Introduction ........................36 Electrical system set-up ....................37 4.2.1 Input ..............................37 4.2.2 Differential............................37 4.2.3 Emergency power off device (EPO) ....................37 4.2.4 External maintenance by-pass......................38 Mains, load and battery connections ................39 4.3.1 UPS AC input / output power connection ..................

  • Page 9: Preliminary Operations

    Preliminary operations Removing the packaging and positioning the device On delivery, the packaging must be inspected to ensure that it is whole and that it has not been crushed or dented. Check in particular that neither of the two impact resistant devices on the packaging is red; if one of them is red, follow the instructions on the packaging.

  • Page 10: Installation Environment

    Insert the forks of the fork-lift truck in the lower part of the device, from the front or back, and ensure that they stick out about 30 cm on the other side. If a transpallet is used, raise the device only as much as is strictly necessary. Secure the device to the transpallet or fork-lift before moving it.

  • Page 11: Cooling Of The Premises

    Cooling of the premises The recommended operating temperature for the lifetime of the UPS and of the batteries is between 20 and 25°C. The lifespan of the battery depends on the operating temperature; with an operating temperature of between 20°C and 30°C, the lifespan of the batteries is halved.

  • Page 12: Air Change For Battery Premises

    Air change for battery premises The premises housing the battery cabinet must have sufficient air circulation to ensure that the concentration of hydrogen issued during battery charging is kept below the danger limit. The air change in the premises should preferably be provided by natural ventilation, otherwise by forced ventilation. The standard EN 50272-2 for air change envisages that the minimum opening must satisfy the following equation: A = 28 x Q = 28 x 0.05 x n x Igas x C10 (1/10³) [cm²] where:...

  • Page 13: Librapro In Single Configuration

    The operations described in this chapter must be carried out exclusively by a specialized technician. Set-up of the electrical system 3.1.1 ac Input The LIBRAPRO input must have a max. current protection device. The protection device should be sized according to the situation, as follows: a) single power line...

  • Page 14: Selectivity

    3.1.2 Selectivity The system where the UPS is inserted must be set up in such a way that in the event of a shortcircuit on one of the lines downstream of the UPS, the fuse on the output opens while the upstream fuse normally works. This is known as selectivity, and ensures that the remaining feeders maintain the power supply.

  • Page 15: Battery

    3.1.3 Battery Battery cabinet For connection to the UPS, the battery cabinet must have an overcurrent protection device and a disconnecting device. The function of the fuses is to protect the batteries and the cables from a shortcircuit between the battery cabinet and the UPS .

  • Page 16: Backfeed Protection

    3.1.5 Backfeed protection The UPS is provided with a device to prevent voltage backfeed on the input line due to an internal fault. This protection device works by switching off the inverter if the current flow is faulty, thereby causing voltage backfeed on the by-pass line during operation from the inverter.

  • Page 17: Mains, Load And Battery Connections

    Mains, load and battery connections The operations described in this chapter must be carried out exclusively by a specialized technician. The first connection to be made is the earth conductor. THE UPS MUST NOT OPERATE WITHOUT AN EARTH CONNECTION Before making the connection, open all the switches on the device and ensure that the UPS is completely isolated from the power sources: battery and AC power line.

  • Page 18: Battery Connections

    Battery connections BATTERY CABINET if present: The battery cabinet must be provided with a fuses to be connected to the UPS . max 3 battery cabinet SWBAT2 SWBAT3 Up to 3 battery cabinets can be connected in parallel, in accordance with the diagram below. CABINET DISCONNECTOR For systems with 4 or more battery cabinets, use a Battery switch cabinet where the cables can be parallel-connected (refer to the marketing department).

  • Page 19: Connection Of Signals And Remote Commands

    If the jumper on the connector is opened, the voltage on the UPS output will be cut. The LIBRAPRO UPS is factory-fitted with the EPO terminals shortcircuited. If this input is used, the UPS can be shut down in a hazardous situation from a remote position simply by pressing a button.

  • Page 20: Rs232

    The position of the contacts shown is without the alarm present. The contacts can take a max. current of 1A with 42 Vac. RL 1 RL 2 RL 3 IN 1 Please refer to APPENDIX A for the list of alarms and commands that can be programmed. The change of function may be made by the technical support personnel.

  • Page 21: Parallel (Optional)

    3.4.5 SLOTS 1-2 , the following cards may be inserted (optional): NetMan 102 Plus (on SLOT 1 main or SLOT 2 aux) Device for the management of the LIBRAPRO s on the Ethernet. It can send information on the status of the device with various protocols: TCP/IP UDP (compatible with Watch&Save);...

  • Page 22: Remote Alarms (Optional Card)

    3.4.6 REMOTE ALARMS (optional card) Nr. 6 outputs: potential-free contacts for alarms (programmable from the display panel), 2 inputs (programmable from the panel) and one 12V DC maximum 100mA auxiliary input. 3.4.7 MULTI I / O (optional) The function of this accessory is to convert external signals from the UPS (e.g. temperature of environment, temperature of battery premises, etc.) into signals by means of relay contacts or via serial output RS485 in MODBUS protocol.

  • Page 23: Swout And Swmb Aux - Battery Temperature Sensor

    3.4.10 SWOUT and SWMB aux – Battery temperature sensor. - 30 ÷ 80 kVA - A = connection to external output UPS switch aux. B = connection to external bypass UPS switch aux T = external temperature sensor connection. SWOUT and SWMB aux Terminals to be used for the connection of the auxiliary contacts of switches inserted in the UPS system, see also the section on “Insertion of additional...
  • Page 24 External temperature sensor (terminal T) Battery cabinet The use of the temperature sensor allows to the UPS control logic to regulate the battery voltage value in function of the its working temperature. + / - It is necessary to use the specific kit supplied by the manufacturer only: any uses which do not comply with the specifications may cause malfunctioning or breakage to the appliance.
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  • Page 26: Start-Up Procedure

    Start-up procedure mains power supply The mains power supply has to be present in order to start up the UPS The UPS output terminals will be powered in this phase and all applications connected will receive voltages. All users must therefore be warned before carrying out the start-up procedure. BATTERY CABINET if present: The battery cabinet must be provided with fuses device for it to be connected to the UPS.

  • Page 27: Battery Operation Check

    When the LIBRAPRO UPS is first started up, it is in on-line mode (see page 28 ). See “Display and control panel” manual, to set Standby-on / Smart active operating mode. configurations Contact the technical support personnel for other operating modes.

  • Page 28: Operating Modes

    (INPUT). If there is a fault in the INPUT, the LIBRAPRO UPS will switch to the batteries in zero time and the batteries will supply energy to the inverter to keep the load powered (for the backup time of the batteries).

  • Page 29: Standby-Off (With Mains Present The Load Is Not Powered)

    3.6.3 Standby-off (with mains present the load is not powered) load not powered, in the event of an input mains failure the load is powered from the inverter using the energy stored by the batteries. Standby-Off: if there is a mains power supply, UPS output is zero. The RECTIFIER remains on and keeps the battery charged.

  • Page 30: Personalizations

    (therefore this operation should be effected only if absolutely necessary). Procedure a) the by-pass line is present and its frequency and voltage are suitable the LIBRAPRO display panel indicates NORMAL OPERATION. 1) close disconnecting switch SWMB (the control logic automatically disables the inverter)

  • Page 31: Ups And Load Shutdown

    Procedure b) The by-pass line is outside the acceptance field; the following message is seen on the display panel: BYPASS VOLTAGE FAIL or SWBY 1) open all the switches on the device (SWIN, SWOUT, SWBY and the battery cabinet disconnectors/fuses). The control panel will remain off. 2) before closing switch SWMB to connect the loads, ensure that both the frequency and voltage of the supply line are sufficient to power the connected loads.

  • Page 32: Block Diagram

    3.10 Block diagram Pag. 32 / 57 0MNMPMK10NPENUB 00...

  • Page 33: Components Of The Block Diagrams

    3.11 Components of the block diagrams The UPS is made up of the following sub-assemblies: RECTIFIER This represents the input stage and its function is to convert the alternating voltage of the power supply line into direct voltage. Rectifier start-up can be programmed from the black out display panel.
  • Page 34 INVERTER This is the output stage, the function of which is to convert the direct voltage from the RECTIFIER or from the BATTERY into stabilized sinusoidal alternating voltage. The inverter output is isolated from the input and from the batteries by a galvanic isolation transformer. The transformer has a screen between the primary and the earthed secondary.
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  • Page 36: Ups In Parallel Configuration

    UPS in parallel configuration Introduction UPS may be connected in a parallel configuration to increase both the reliability of the power supply to the load and the power available in output. Up to 8 UPSs can be parallel-connected. It is recommended to connect units of the same power.

  • Page 37: Electrical System Set-Up

    Electrical system set-up All the information contained in the section on electrical system set-up in relation to the UPS (page 13) remains valid with the addition of the information set out below. 4.2.1 Input The instructions seen in the first part of the manual for a single UPS remain valid; each unit must be protected with equivalent fuses or switches.

  • Page 38: External Maintenance By-Pass

    4.2.4 External maintenance by-pass. In some cases, in order to facilitate maintenance operations of the individual units making up the system, it may be advisable to install an external maintenance by-pass. The new disconnector located on the by-pass line (Q2) must be provided with auxiliary contacts (one for each UPS). The position of the contact is opposite to the position of the switch, thus the contact must be closed when the disconnector is open.

  • Page 39: Mains, Load And Battery Connections

    Mains, load and battery connections Mains, load and battery connections. All the information contained in the section “Mains, load and battery connections” (page 17) in relation to the UPS remains valid with the addition of the information set out below. 4.3.1 UPS AC input / output power connection Refer to the INSTALLATION DRAWINGS manual for information on how to select the cable sections for each UPS.

  • Page 40: Power Connections Battery Side

    4.3.2 Power connections battery side. BATTERY CABINET if provided: In order for the battery cabinet to be connected to the UPS, it must be provided with a fuses device. Each UPS with its own battery cabinet max 3 battery cabinet max 3 battery cabinet SWBAT SWBAT...
  • Page 41 Several UPS connected to the same battery TO CONNECT MORE UPS IN PARALLEL WITH ONLY ONE BATTERY: Between battery cabinets and the UPS must be positioned a Battery switches cabinet , to allow the single UPS maintenance, as shows the picture. max 5 battery cabinet SWBAT SWBAT...

  • Page 42: Connection Of Signals

    Connection of signals The signals of several parallel UPSs are connected in a closed loop configuration; if the loop is interrupted at any point, either due to a fault or for maintenance, operation of the system is not compromised, and the system continues to operate normally, as will be shown repeatedly below.
  • Page 43 Using the cable with two RJ45 terminals provided with each UPS (A), make the connections as shown below: single UPS configured in parallel If it is required to use a UPS that has been configured as a parallel unit on its own, the signal card must be jumpered with the cable provided as shown below.
  • Page 44 three UPS in paralell D UPS1 LED on, UPS2 LED off, UPS3 LED off SW1 start position UPS1, SW1 cont position UPS2, UPS3 UPS 2 UPS 2 UPS 1 To add other parallel UPSs, a “UPS PARALLEL CABLE” must be added for each new UPS connected. The signal connection must not be removed when one UPS is shut down Pag.

  • Page 45: Start-Up Procedure

    Start-up procedure Before starting up the whole system for the first time, some tests have to be performed to check that the UPSs are connected to each other correctly. A) open all the switches and disconnectors on the UPSs (SWB, SWIN, SWBY, SWOUT and SWMB) and on the battery cabinets.

  • Page 46: Operating Modes

    Operating modes Several UPS units connected in parallel share the current absorbed by the load between them. In a system with several UPSs connected in parallel, there is a single MASTER unit and the remaining units will be SLAVES. The UPSs are all exactly the same and the MASTER is chosen on start-up. The MASTER unit is shown on the display panel by the capital letter “P”...
  • Page 47 Example of parallel operation For the sake of simplicity, the instructions shown below refer to a system with three UPSs, but are equally valid for more complex systems. Let us assume that the signal cable is not damaged and that the UPSs are in the following state: UPS STATUS 1) Normal operation, Master unit 2) Normal operation, Slave unit...

  • Page 48: By-Pass For Maintenance

    By-pass for maintenance observe the following precautions when operating SWMB SWMB must not be closed on a UPS that is off and that is connected in parallel with other units operating normally. This operation may cause a fault on the UPSs which may create a dangerous voltage at the output.
  • Page 49 Close SWIN, SWBY, SWOUT on all the UPSs. Close the disconnector or the fuses on the battery cabinets Check that all the parallel-connected LIBRAPRO UPS are on. Open all disconnector SWMB. After a few seconds all the UPS will return to NORMAL OPERATION.
  • Page 50 Now switch on UPS 3 (the added UPS). With the lever of SW1 in the start position in one UPS only and the lever in the cont position on all the others, check that all the UPSs are operating normally and that the system is sharing the output power. Example of hot removal With hot removal, it is not necessary to shut down all the UPSs of the system in order to remove one.
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  • Page 52: Maintenance

    Maintenance The uninterruptible power supply is designed and produced to last a long time even in the most severe service conditions. It should be remembered however that this is electrical power equipment, which requires periodic controls. Moreover, some components have a limited lifespan and as such must be periodically checked and replaced should conditions so dictate: in particular the batteries, the fans and in some cases the electrolytic condensers.
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  • Page 54: General Characteristics

    Current distortion, power factor (*): LIBRAPRO version 27 %, ≥ 0,9 26 %, ≥ 0,9 LIBRAPRO + Filter 6 %, ≥ 0,9 5 %, ≥ 0,9 (*) load 100%, rated input voltage, and full charge battery. Pag. 54 / 57...
  • Page 55 Electrical Data INVERTER Rated power Pf 0.9 inductive [kVA] Active power Pf 1 [kW] 13,5 Rated voltage 230Vca 1-phase+N (configurable from 220V to 240V) Rated voltage adjustment field from 208 to 242V Rated frequency [Hz] 50 or 60 (configurable) Static variation ±...

  • Page 56: Appendixa - Remote Commands And Alarms Card

    Appendix A - remote commands and alarms card - Technical support personnel may give the COMMAND and the three ALARMS functions that are different to the standard configuration of the alarms card (see page 19) . The options available are listed below: ALARMS: DISTURBANCES ON BYPASS LINE MANUAL BYPASS, SWMB ON...
  • Page 57 To be used when the load may Forces the selection of the UPS support mains interference or Standby-ON operation. frequency variations and it is thus Standby ON This is done with the contact kept preferred improve system closed; if reopened, the command is efficiency.

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