Vertiv Liebert EXS 10kVA User manual

Liebert® EXS 10-20kVA
User Manual

EXS 10-20kVA
UNINTERRUPTIBLE POWER SUPPLY
USER MANUAL
10H52260UM60 – rev. 1

2 User Manual 10H52260UM60 - Rev. 1 - 10/2017
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All rights, including rights of translation, reproduction in any
form or other usage of this document, or any part of it, are
reserved.
Transgressors will be liable for damages.
All rights, including rights deriving from the granting of
patent or registration of utility, model or design, are
reserved.
Delivery subject to availability. The Manufacturer reserves
the right to make changes and/or improvements to the
product without prior notice and without incurring
obligations.
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differ from the model dis
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ed on the front cover.

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Special Declaration
Safety of Personnel
1. This product must be installed by qualified professionals, engineers appointed by the manufacturer or an
authorized agent. Failure to observe this condition may result in product malfunction, and compromise the safety of
personnel.
2. Take the time to read this product manual and the safety precautions thoroughly before installing and
commissioning this product. Failure to observe this condition may result in product malfunction, and compromise
the safety of personnel.
3. This product is not intended for use with life support systems
4. Never attempt to dispose of the internal and external batteries in fire as they may explode, leading to serious
injuries, or even death.
Product Safety
1. If the product is to be stored or unused for extended periods, place the equipment in a clean, dry environment
within the specified temperature range
2. This product should be used in an appropriate operating environment. Consult the Site Preparation section for
information about the ideal operating and maintenance environment for this product
3. This product is not designed for use in conditions and/or environments where:
The temperature and relative humidity are outside the specified limits
It is subject to vibration or shocks
It is exposed to the presence of conductive dust, corrosive gases, salts, or inflammable gases
It is exposed to heat sources or strong electro-magnetic interference
Disclaimer
VERTIV may not be held accountable or responsible for defects and malfunctions arising for the following reasons:
Application range or operating environment outside the specified limits
Unauthorized modification, incorrect installation or operation
Force majeure
Other actions not in compliance with the instructions in this manual

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Safety Precautions
Always observe the following safety symbols!
Used to alert the user to the risk of death or severe injury should the unit be used improperly.
Used to alert the user to the risk of injury or damage to the equipment should the unit be used improperly.
Used for instructions that the user must read carefully and observe, even if failure to do so may not result in damage.
This manual contains information concerning the installation and operation of single UPS modules and parallel
systems of the Vertiv EXS 10kVA-20kVA UPS.
Read this manual thoroughly before installing, using and servicing the UPS.
Warning
This UPS has been designed for use in commercial and industrial environments. Installation restrictions or additional measures
may be required to prevent disturbances.
Conformity and standards
This product complies with the Directives 2014/35/EU (low voltage safety) and 2014/30/EU (EMC), and the following UPS
product standards:
* IEC/EN62040-1+A1:2013 General safety requirements for UPS
* IEC/EN62040-2:2006 EMC
* IEC/EN62040-3 Performance requirements and test methods
For more details, refer to Chapter 10 .
Continued compliance requires installation in accordance with these instructions and the use of manufacturer approved
accessories only.
Warning: high earth leakage current
The unit must be connected to earth before it is connected to its AC mains input and battery power supplies.
This equipment is fitted with an EMC filter.
The earth leakage current ranges from 0 to 1000 mA.
Transient and steady state earth leakage currents, which may occur when the equipment is started, should be taken into
account when se4lecting the instantaneous RCCB or RCD devices.
RCCB devices that are sensitive to unidirectional DC pulses (Class A) and immune to transient state current pulses must be
selected.
It is also necessary to take into account that the load earth leakage currents will be borne by the RCCB or RCD.
The equipment must be earthed in compliance with the local electrical code of practice.
Warning
When selecting the UPS system upstream distribution protection devices, ensure that comply with the specifications
indicated in 3.1.4 ,and with the local electrical regulations.
Warning: backfeed protection
This UPS is fitted with a dry contact for use with an external automatic disconnecting device (not supplied) in order to prevent
the UPS voltage from being fed back to the input terminals through the rectifier or bypass static switch circuit. A label must be
placed on or near the all external primary input supply disconnecting devices to warn service personnel that the circuit is
connected to a UPS. The text of the label must have the following meaning: Risk of voltage backfeed! Isolate the UPS, then
check for hazardous voltages between all terminals, including the protective earth, before working on this circuit.

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General safety precautions (For users)
Like other types of large power equipment, the UPS and battery circuit breaker box/battery cabinet contain high voltages.
This equipment meets the IP20 standard, and other safety panels are fitted inside the equipment.
The UPS may be operated in complete safety, provided the general instructions and the steps recommended in this manual
are followed.
Multiple power inputs (For users)
This UPS system receives power from more than one source. All DC and AC power sources must be disconnected before
servicing.
This UPS includes several circuits that are energized by high AC as well as DC voltages. Check for voltage with both AC and
DC voltmeters before working inside the UPS.
User serviceable components (For service personnel)
All equipment maintenance and servicing procedures involving internal access require the use of a tool and should be carried
out by trained personnel only. There are no user-serviceable parts behind the covers that require a /key for removal.
Battery voltage: 320Vdc - 540Vdc (For service personnel)
All battery maintenance and servicing procedures require the use of tools and should be carried out by trained personnel only.
Take special care when working with the batteries associated with this UPS. When connected together, the battery terminal
voltage will exceed 320Vdc and is potentially lethal.
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 scrupulously at all times. Special attention should be paid to
the recommendations concerning local environmental conditions and the provision of protective clothing, first aid and fire-
fighting facilities.
Warning
When the internal fuse of the UPS is damaged, it must be replaced with fuse having the same electric parameters by qualified
personnel.
Important
The area housing the communication board contains static sensitive components, therefore it is necessary to adopt all the
appropriate ESD-proof measures before accessing this area.
Warning
In order to satisfy the conditional short circuit current rating, Icc at 10kA symmetrical rms, the specified upstream breakers
must comply with an IEC 60947 series standard.

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This Manual describes the following devices
Product Model
Liebert EXS 10kVA (Standrad UPS) EXS 0010kTH1AFN01
Liebert EXS 15kVA (Standard UPS) EXS 0015kTH1AFN01
Liebert EXS 20kVA (Standard UPS) EXS 0020kTH1AFN01
Liebert EXS 10kVA (UPS with side cabinet) EXS 0010kTH1AFN02
Liebert EXS 15kVA (UPS with side cabinet) EXS 0015kTH1AFN02
Liebert EXS 20kVA (UPS with side cabinet) EXS 0020kTH1AFN02

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Contents
Chapter 1 Overview .........................................................................................................................................................................................................9
1.1 Features..........................................................................................................................................................................................................................................................................9
1.2 Design Concept .........................................................................................................................................................................................................................................................9
1.3 Parallel System.........................................................................................................................................................................................................................................................12
1.4 Operating Modes....................................................................................................................................................................................................................................................13
1.5 Battery Management............................................................................................................................................................................................................................................15
1.6 Battery Protection..................................................................................................................................................................................................................................................16
Chapter 2 Mechanical Installation............................................................................................................................................................................ 17
2.1 Precautions ................................................................................................................................................................................................................................................................17
2.2 Transportation......................................................................................................................................................................................................................................................... 17
2.3 Tools..............................................................................................................................................................................................................................................................................18
2.4 Unpacking..................................................................................................................................................................................................................................................................19
2.5 Initial Inspection .....................................................................................................................................................................................................................................................21
2.6 Environmental Requirements .........................................................................................................................................................................................................................21
2.7 Mechanical Requirements................................................................................................................................................................................................................................ 22
2.8 Installation Drawings .......................................................................................................................................................................................................................................... 23
Chapter 3 Electrical Installation ...............................................................................................................................................................................25
3.1 Connecting the Power Cables........................................................................................................................................................................................................................ 25
3.2 Wiring the Signal Cables....................................................................................................................................................................................................................................31
Chapter 4 Operator Control and Display Panel ...................................................................................................................................................35
4.1 Introduction ..............................................................................................................................................................................................................................................................35
4.2 LCD Menu Structure.......................................................................................................................................................................................................................................... 40
4.3 LCD Screen Types .............................................................................................................................................................................................................................................. 40
4.4 Prompt Window.....................................................................................................................................................................................................................................................46
4.5 UPS Alarm Message List..................................................................................................................................................................................................................................46
Chapter 5 Operating Procedures ............................................................................................................................................................................. 50
5.1 Brief Introduction...................................................................................................................................................................................................................................................50
5.2 UPS Start-up Procedures..................................................................................................................................................................................................................................51
5.3 Procedures for Transferring Between Operating Modes...............................................................................................................................................................54
5.4 UPS Shut-down Procedures...........................................................................................................................................................................................................................58
5.5 REPO ............................................................................................................................................................................................................................................................................58
5.6 Automatic Restart................................................................................................................................................................................................................................................59
5.7 Language Selection .............................................................................................................................................................................................................................................59
5.8 Changing the Current Date And Time..................................................................................................................................................................................................... 60
5.9 Setting the Password ..........................................................................................................................................................................................................................................61
Chapter 6 Battery ......................................................................................................................................................................................................... 65
6.1 Introduction ..............................................................................................................................................................................................................................................................65
6.2 Safety...........................................................................................................................................................................................................................................................................65
6.3 UPS Battery..............................................................................................................................................................................................................................................................67
6.4 Precautions For Installation Design...........................................................................................................................................................................................................68
6.5 Battery Installation Environment and Number of Batteries.........................................................................................................................................................68
6.6 Battery Protection................................................................................................................................................................................................................................................69

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6.7 Battery Installation and Connections........................................................................................................................................................................................................69
6.8 Designing the Battery Room..........................................................................................................................................................................................................................70
6.9 Battery Maintenance ..........................................................................................................................................................................................................................................70
6.10 Disconnecting or Connecting Internal Battery Terminals ...........................................................................................................................................................71
6.11 Disposal of Used Batteries............................................................................................................................................................................................................................. 72
Chapter 7 Parallel System and LBS System ..........................................................................................................................................................73
7.1 General......................................................................................................................................................................................................................................................................... 73
7.2 System Installation Procedures
.................................................................................................................................................................................................................... 73
7.3 Operating Procedures for Parallel Systems........................................................................................................................................................................................... 75
7.4 LBS System .............................................................................................................................................................................................................................................................. 78
Chapter 8 Options ......................................................................................................................................................................................................... 82
8.1 List of Options.........................................................................................................................................................................................................................................................82
8.2 Option Introduction .............................................................................................................................................................................................................................................82
Chapter 9 Service And Maintenance ...................................................................................................................................................................... 98
9.1 Fan Maintenance ...................................................................................................................................................................................................................................................98
9.2 Battery Maintenance ..........................................................................................................................................................................................................................................98
9.3 Cleaning the UPS..................................................................................................................................................................................................................................................99
9.4 Checking the UPS Status.................................................................................................................................................................................................................................99
9.5 Checking the UPS Functions .........................................................................................................................................................................................................................99
Chapter 10 Specifications ........................................................................................................................................................................................ 100
10.1 Conformity and standards .......................................................................................................................................................................................................................... 100
10.2 Environmental Characteristics................................................................................................................................................................................................................. 100
10.3 Mechanical Specifications.......................................................................................................................................................................................................................... 100
10.4 Electrical Specifications (InputRectifier)............................................................................................................................................................................................101
10.5 Electrical Specifications (Intermediate DC Circuit).......................................................................................................................................................................101
10.6 Electrical Specifications (Inverter Output)........................................................................................................................................................................................102
10.7 Electrical Specifications (Bypass Input)..............................................................................................................................................................................................102
Appendix 1 LCD Parameter Settings .................................................................................................................................................................... 103
Appendix 2 Glossary .................................................................................................................................................................................................. 105
Appendix 3 Hazardous Substances And Content ............................................................................................................................................ 106

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User Manual 10H52260UM60 - Rev. 1 - 10/2017 9
Chapter 1 Overview
This section provides a short introduction to the Liebert EXS 10kVA - 20kVA UPS (hereafter referred to as “the
UPS”), covering features, design concept, parallel system, operating mode, battery management and battery
protection.
1.1 Features
The UPS is connected between a critical load (e.g. a computer) and the mains power supply to provide high quality
power for the loads. The UPS provides the following advantages:
 Increased power quality
The UPS protects its output against the variations in the input power supply by means of the intelligent controller.
 Improved noise rejection
Due to the use of AC-DC-AC conversion, noise on the input power supply is effectively filtered, so that the load is
provided with a “clean” power supply.
 Mains failure protection
If the input power fails, the UPS switches to battery operating mode so that the power supply to the loads is not
interrupted.
 Compatible with two output modes
3-in 3-out (factory default) and 3-in 1-out (by installing an optional 3-in 1-out copper bar kit). Only authorized
personnel are permitted to change the wiring method and modify the corresponding parameters using the VERTIV
setting software.
1.2 Design Concept
System Design
This section introduces the working principle of the single UPS module. The UPS adopts AC-DC-AC conversion (as
shown in Figure 1-1). The first stage conversion (AC-DC) uses a three-phase, high frequency rectifier to convert the
three-phase input voltage into a stable DC bus voltage.

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Figure 1-1 Block diagram illustrating the working principle of a UPS single module
The UPS has its own battery charger and adopts advanced temperature compensation technology to effectively
prolong the battery service life. The inverter is principally based on the use of large power IGBTs, and adopts
advanced SVPWM control technology to reconvert the DC bus voltage to AC voltage.
When the mains is normal, the rectifier and inverter work together to supply the loads and charge the battery.
When the mains is outside normal limits, the rectifier stops working, and the battery supplies power to the loads
through the inverter. If the battery voltage falls to end of discharge (EOD) voltage and the mains has not yet
returned within the normal limits, the UPS will shut down (if the system uses split bypass configuration and the
bypass is normal, the system will transfer to bypass). The battery EOD voltage is pre-set. When the mains is
abnormal, the battery will continue to supply the UPS until the battery voltage reaches to EOD level, whereupon the
UPS shuts down; this period is known as the 'Backup Time'. The duration of the backup time depends on the battery
capacity and the loads.
Bypass
Thanks to the intelligent control function provided by the ‘Static Switch’ module (as shown in Figure 1-1), which
includes the controllable electronic switch, the loads may be supplied either by the inverter or the bypass. Under
normal operating conditions, the loads are supplied by the inverter, in which case the automatic inverter switch on
the inverter side is closed. In the event of an overload (after the overload delay period has elapsed) or inverter
failure, the inverter switch is opened, and the 'Static Switch' module transfers the loads automatically to the bypass.
In normal operating state, in order to guarantee the uninterrupted transfer between inverter and bypass, the inverter
output must be synchronized with the bypass.
Therefore, when the bypass frequency is within the synchronization range, the inverter control circuit will
synchronize the inverter output frequency with the bypass frequency and phase.
The UPS is also equipped with a manual maintenance bypass switch that can be used to shut the UPS down during
maintenance. In this condition, the bypass will supply the critical loads directly via the maintenance bypass.
Note
When the load is supplied by the bypass or maintenance bypass, the power quality & availability will be unregulated.
Input
Maintenance bypass switch
Bypass input switch
Rectifier input switch
Bypass input
Mains input
Battery charger
Output switch
Automatic inverter switch
Inverter
Rectifier
Static switch
Maintenance bypass
UPS output
Battery
Output

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System Control Principle
Normal operation
Normal mode: In this condition, the UPS mains input supply is within normal limits, the rectifier and inverter operate
normally, the load is supplied by the inverter, the battery circuit breaker is closed, and the battery is in the stable
floating charge state.
(Parallel System) Note: As the individual UPS module outputs are connected in parallel, the system checks that the
inverter control circuits are perfectly synchronized with one another and with the bypass in terms of both frequency
and phase, and that the output voltages are the same. The current supplied to the load is automatically divided
among the UPS units. A warning message appears while synchronization is in progress.
Mains abnormal
When the mains fails or is abnormal, the rectifier will stop working automatically, and the system will transfer to
battery output (through the inverter). The length of the operation time in battery mode depends on the load and the
battery capacity. During this period, if the battery voltage falls to the EOD level before the mains supply has
returned within normal limits, the inverter will stop working automatically, and the UPS operator control and display
panel will display the corresponding alarm messages. If the system uses split bypass configuration and the bypass is
normal, the system will transfer to bypass.
Mains recovery
When the mains returns within normal limits within the permissible time, the rectifier will start automatically (at this
point its output power will increase gradually) and supply the load and charge the battery again. This means that
the power supply to the load will not be interrupted.
Disconnecting the battery
To disconnect the external battery from the UPS system during maintenance, use the external isolation device. In
this condition, the battery backup function will not be available in the event of a mains failure, but none of the other
UPS functions and performance will be affected.
UPS module failure
In the event of an inverter failure, automatic inverter switch failure, or if the output fuse blows, the load will
automatically transfer to the bypass, and the output power supply will not be interrupted. Should this condition
occur, please contact your local VERTIV customer service centre for technical support.
(Parallel System) In the event of a fault on a UPS module, it will automatically exit the parallel system. If the system
is still capable of providing the power required by the load, the remaining modules will continue to supply the load
without interruptions. If the remaining modules are no longer capable of fulfilling the power requirements, the load
will automatically transfer to the bypass.
Overload
If the inverter is overloaded or the inverter current remains outside the specifications (refer to Table 10-6) longer
than the specified time, the load will automatically transfer to the bypass without any interruption in the power
supply to the load. If both the overload and the current are reduced to a level within the specified range, then the
load will be re-transferred to the inverter. In the event of an output short circuit, the load will be transferred to the
bypass, and the inverter will shut down. The transfer is determined primarily by the characteristics of the system
protection device.
In both the situations listed above, the UPS operator control and display panel will display the corresponding alarm
messages.
(Parallel System) The control logic system constantly monitors load requirements and controls the power supplied
by each UPS module. If an overload condition persists for longer than a pre-set period and the number of active
modules is unable to satisfy load requirements, the load will transfer to the bypass. The load is re-transferred to the
inverter if the power is reduced to a value that can be sustained by the number of active modules in the system.

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Maintenance bypass
The UPS is equipped with a second bypass circuit, known as the maintenance bypass, which provides a safe
working environment for the engineers to carry out regular maintenance or repair the UPS system, while providing
unregulated mains supply to the loads. The maintenance bypass can be activated manually selected by closing the
maintenance bypass switch, and disconnected by setting the switch to OFF.
Warning
If the UPS system consists of two or more UPS modules, and the load capacity exceeds the single module capacity, do not
use the internal maintenance bypass switch.
UPS Power Supply Switch Configuration
Figure 1-2 illustrates the block diagram of the UPS module. The UPS may be connected in split bypass (where the
bypass is supplied by a separate mains input source) or common input configuration. In the split bypass
configuration, the static bypass and maintenance bypass share the same independent bypass power supply. Where
a separate power source is not available, the input supply connections of the bypass input switch (Q2) and rectifier
input switch (Q1) should be linked together (these terminals are linked before delivery) so that the bypass input and
rectifier input use mains power from the same source.
During the normal UPS operation, all switches should be closed, with the exception of the maintenance bypass
switch Q3.
Figure 1-2 UPS power supply switch configuration
Circuit Breaker
The external battery shall be connected to the UPS via the circuit breaker.
1.3 Parallel System
Up to four UPS modules may be parallel-connected to form a parallel system and increase the system capacity and
reliability. The load is shared equally between the parallel connected UPS modules.
Also, two UPS modules or parallel system may be used to form a dual bus system (LBS). Each UPS module or
parallel system has an independent output. Output synchronization is achieved through the LBS cable, thus
enabling seamless load transfer between the two systems.

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Parallel System Features
1. The hardware and software of a parallel system are identical to those of the individual modules. The parallel
system is configured by modifying the respective settings in the configuration software or via the control panel.
2. Parallel cables are connected in a ring, providing both system reliability and redundancy. LBS cables are
connected between any two UPS modules of each bus. The intelligent parallel logic provides the user with maximum
flexibility. For example, the UPS modules in a parallel system can be shut down or started up in any order. Transfers
between normal mode and bypass mode of operation are seamless and self-recoverable, i.e, when the overload is
cleared the system will revert automatically to its original operating mode.
3. The total load of the parallel system can be queried from the LCD screen on each UPS module.
Parallel System Requirements
A group of paralleled modules behave as if it were one large UPS with the advantage of providing increased
reliability. To ensure that all modules are utilised equally and to comply with relevant wiring rules, the following
requirements apply:
1. All UPS modules must be of the same rating and must be connected to the same bypass source.
2.The bypass and rectifier input sources must be connected to the same neutral line input terminal.
3. If any RCD devices are installed they must be set-up appropriately and located upstream of the common neutral
line input terminal. Alternatively, the device must monitor the protective earth current of the system. Refer to
Warning: high earth leakage current before Contents.
1.4 Operating Modes
The UPS features the following operating modes:
 Normal mode
 Battery mode
 Bypass mode
 Maintenance mode
 ECO mode
 Parallel redundancy mode (system expansion)
 LBS system mode
 Common battery string mode
Normal mode
As shown in Figure 1-3, the mains is rectified by the UPS rectifier and then inverted by the inverter to supply
uninterrupted AC power to the loads. At the same time, the charger will charge the battery.
Figure 1-3 Normal operating mode line diagram
Rectifier input switch
Mains input
Battery charger
Output switch
Inverter
Rectifier
UPS output
Battery
Automatic inverter switch

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Battery mode
As shown in Figure 1-4, the operating mode where the battery provides the backup power supply to the loads
through the rectifier and inverter is called battery mode. In the event of a mains failure, the system will transfer
automatically to battery mode with no interruption in the power supply to the load. When the mains power supply is
restored, the system will re-transfer automatically to normal operating mode without any manual intervention, and
with no interruption in the power supply to the load.
Figure 1-4 Battery operating mode line diagram
Note
The battery cold start function may be used to switch the UPS on in Battery (charged) mode directly during mains failure.
This means that the battery power supply can be used independently to improve the availability of the UPS.
Bypass mode
As shown in Figure 1-5, in normal mode, in the event of an inverter failure, inverter overload or inverter manual shut
down, the static switch will transfer the load from the inverter side to bypass side, with no interruption in the power
supply to the load. In this case, if the inverter and bypass are not synchronized, there will be a transitory interruption
in the power supply to the load (not exceeding 20ms).
Figure 1-5 Bypass operating mode line diagram
Maintenance mode
As shown in Figure 1-6, if it is necessary to service the UPS or carry out maintenance work on it, you may use the
manual maintenance bypass switch to transfer the load to maintenance bypass, with no interruption in the power
supply to the load. This maintenance bypass switch is fitted in all UPS modules and rated for full load of one module.
Figure 1-6 Maintenance operating mode line diagram
ECO mode
If ECO mode is selected, all the power switches and the circuit breaker are closed, and the system selects the
bypass as the preferred source of power for the load, in order to save energy. When the bypass supply frequency
and voltage are within normal limits (adjustable), the load is powered by the bypass, with the inverter on stand-by;
when the bypass voltage and/or frequency is outside these pre-defined and adjustable limits, the system will
transfer to the inverter output. In this mode, the system can charge the battery normally.
Output switch
Inverter
Rectifier
UPS output
Battery
Automatic inverter switch
Bypass input switch
Bypass input
Static switch
Output switch
UPS output
Maintenance bypass switch
Bypass input
Maintenance bypass
UPS output

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Figure 1-7 ECO operating mode line diagram
Warning
The load is not protected against distortion on the mains voltage waveform in ECO mode.
Parallel redundancy mode (system expansion)
For higher capacity or higher reliability, or both, the outputs of multiple UPS modules can be programmed for
directly paralleling while a built-in parallel controller in each UPS module ensures automatic load sharing. The
parallel system may consist of up to four UPS modules. For the operating principle diagram of parallel redundancy
mode, see Figure 7-1.
LBS mode
A dual bus system consists of two independent UPS systems, each containing one or more parallel UPS modules.
The dual bus system provides high reliability, which makes it suitable for use with loads having multiple input
terminals. In the case of single-input loads, an STS may be installed to power the load. For the operating principle
diagram of LBS mode, see Figure 7-4.
Common battery string mode
In this mode, when the UPS modules (up to four UPS units) are connected in parallel, they share the same battery
string thus providing cost and space savings.
Note
Never use batteries having different brands, type or capacities in the same system. Common battery string mode is suitable
for parallel systems only, and is not compatible with LBS mode.
1.5 Battery Management
The following battery management functions are set by the service engineer using the VERTIV setting software.
Normal Function
1. Constant current boost charge
Uses a constant current (within battery charging limit) to charge the battery. This function can be used for fast
battery capacity recovery. It is possible to modify the value of the charge current.
2. Constant voltage boost charge
Uses a constant voltage to charge the battery. This function can be used for fast battery capacity recovery. In the
case of VRLA batteries, the maximum boost charge voltage should not exceed 2.4V/cell.
3. Float charge
Bypass input switch
Rectifier input switch
Bypass input
Mains input
Battery charger
Output switch
InverterRectifier
Static switch
UPS output
Battery
Automatic inverter switch

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This charging method is used for maintaining the battery at full capacity. The float charge voltage is generally low.
This function can be used to compensate for capacity loss due to battery self-discharging, and to recover battery
capacity.
In the case of VRLA batteries, the float charge voltage should be between 2.2V/cell and 2.3V/cell.
4. Automatic transfer to float charge
When the charge current is less than the 'Threshold of Equalize Charge to Float Charge’ value, the charger will
automatically transfer from boost charge to float charge. When the boost charge time exceeds the 'Equalize Charge
Protect Time Limit', the charger will be forcibly transferred to float charge in order to protect the battery.
5. Float charge temperature compensation (optional)
This function must be used together with the battery temperature detection device. The VERTIV battery
temperature sensor is a standard option designed to satisfy your requirements.
6. EOD protection
When the battery voltage falls to the EOD level, the the battery converter shuts down automatically and the battery
is disconnected in order to avoid further battery discharge. The EOD voltage may be set to between 1.6V/cell and
1.85V/cell (VRLA).
7. Battery low pre-warning time
The battery low pre-warning time may be set to between 2min and 30min. The default setting is 2min.
8. Maximum battery discharge time
When the battery is discharged at low current levels for extended periods, it will result in excessive discharge and
may even cause irreparable damage, for this reason it is essential to set-up a maximum battery discharge time in
order to protect it. This limit value is set-up by the service engineer using the VERTIV setting software.
9. Maximum boost charge protection time
To protect against the battery overcharge damage caused by long time boost charge, it is essential to set-up a
protection time a protect time limit This limit value is set-up by the service engineer using the VERTIV setting
software.
Battery Temperature Compensation
The UPS system also features a battery charge temperature compensation function. When the ambient temperature
is increased, the DC bus voltage (which charges the battery) will be reduced correspondingly to provide optimal
charging voltage for the battery, thus prolonging the battery service life time. This function must be used together
with the VERTIV battery temperature detection device (standard option).
1.6 Battery Protection
The following battery protection functions are set by the service engineer using the VERTIV setting software.
Battery low pre-warning
The battery low pre-warning occurs before the EOD. The time can be set to between 2min and 30min.
EOD protection
When the battery voltage falls to the EOD level, the battery converter shuts down automatically. The EOD voltage
may be set to between 1.6V/cell and 1.85V/cell (VRLA).

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Chapter 2 Mechanical Installation
This section provides a brief introduction to the UPS mechanical installation procedures, including the precautions,
initial inspection before installation, environmental requirement, mechanical requirement and installation diagram.
2.1 Precautions
This section describes the environmental and mechanical requirements and mechanical considerations that must be
taken into account when planning the positioning and cabling of the UPS equipment.
Because no two sites are the same, this section does not provide the detailed installation procedures, and is only
intended to act as a guide for the general procedures and practices that should be carried out by the installing
engineer, so that they can handle the specific situation at the site correctly.
Warning: professional installation required
1. Do not dismantle the packaging without the permission of an authorised service engineer.
2. The UPS should be installed by an authorised engineer in accordance with the information provided in this section.
Warning: battery danger
Take special care when installing batteries. When connecting batteries, the battery terminal voltage will reach 320Vdc,
which is fatal to human beings.
1. Always wear safety glasses to protect the eyes from being damaged by arcing.
2. Remove all the metal items, including finger rings, watch, etc.
3. Use tools with insulated handles.
4. Wear rubber gloves.
5. If batteries are damaged or leak electrolyte they must be replaced. Place the battery into the container that can withstand
sulphuric acid and dispose of it according to the local regulations.
6. In the event of contact with electrolyte, wash the affected are with abundant clean water immediately.
2.2 Transportation
Rail and sea shipping are the recommended transportation methods. If road transportation is unavoidable, choose
roads that are less bumpy in order to protect the equipment.
The UPS cabinet is heavy (see Table 10-3 for the weight). We recommend using mechanical equipment such as an
electric forklift to unload and move the equipment to the place closest to the installation site.

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2.3 Tools
Warning
1. For reasons of safety, all installation tools used on live components must be insulated.
2. The tools listed in Table 2-1 are for reference only; please adapt to the actual requirements for on-site installation and
connection.
Table 2-1 Tools
Name Drawing Name Drawing
Electric hand drill Adjustable wrench
Slotted screwdriver Cross head screwdriver
Stepladder Forklift
Drill Wire cutting pliers
Claw hammer Diagonal cutting pliers
Insulating shoes Antistatic gloves
Electrician’s knife Cable ties
Insulating tape Insulating gloves
Crimping pliers Heat shrinkable tube
Insulated torque wrench Torque screwdriver
Multimeter Clip-on ammeter

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2.4 Unpacking
Unpack the UPS and battery packages under the supervision of an authorized service engineer.
Proceed as follows:
1. Remove the carton.
Remove the packing strap and lift the whole carton upwards, as shown in Figure 2-1.
Removing carton from standard UPS
Removing carton from UPS with side cabinet
Figure 2-1 Removing cartons
2. Remove the fixing structural parts from the bottom pallet (see Figure 2-2), do not throw them away. Next, use the
forklift (inserting the forks at the points illustrated in Figure 2-2) to move the cabinet close the installation site.