Gtec 10kVA User manual

NOVA
Online Double Conversion UPS
USER MANUAL | EN
10 – 40 kVA
Threephase / Threephase
3:3
www.gtec-power.de

Rev.01_16/09/2021

Index
Preface ......................................................................................................................................6
Usage.........................................................................................................................................6
Users..........................................................................................................................................6
Note...........................................................................................................................................6
Safety Precautions..................................................................................................................7
Safety Message Definition.........................................................................................................7
Warning Label ...........................................................................................................................7
Safety Instruction......................................................................................................................7
Debug & Operate ......................................................................................................................8
Maintenance & Replacement....................................................................................................8
Battery Safety............................................................................................................................9
Disposal...................................................................................................................................10
1. UPS Structure and Introduction.....................................................................................11
1.1 UPS structure....................................................................................................................11
1.1.1 UPS Configuration ..................................................................................................11
1.1.2 UPS Outlook ...........................................................................................................11
1.1.3 Details of UPS front and rear views........................................................................14
1.2 Product Introduction........................................................................................................16
1.2.1 UPS System Description .........................................................................................16
1.2.2 Operation Mode.....................................................................................................17
2. Installation.........................................................................................................................20
2.1 Location ............................................................................................................................20
2.1.1 Installation Environment........................................................................................20
2.1.2 Site Selection..........................................................................................................20
2.1.3 Size and Weight......................................................................................................20
2.2 Unloading and Unpacking................................................................................................21
2.2.1 Moving and Unpacking of the Cabinet...................................................................21
2.3 Positioning........................................................................................................................23
2.3.1 Positioning Cabinet ................................................................................................23
2.4 Battery ..............................................................................................................................24
2.5 Cable Entry........................................................................................................................25
2.6 Power Cables ....................................................................................................................26
2.6.1 Specifications .........................................................................................................26
2.6.2 Specifications for Power Cables Terminal...............................................................27
2.6.3 Circuit Breaker........................................................................................................27
2.6.4 Connecting Power Cables.......................................................................................28
2.7 Control and Communication Cables ................................................................................29
2.7.1 Dry Contact Interface .............................................................................................29
2.7.2 Communication Interface.......................................................................................36

3. Control and LCD display Panel........................................................................................37
3.1 Introduction......................................................................................................................37
3.2 LCD Screen ........................................................................................................................37
3.3 Main menu........................................................................................................................38
4. Operations .........................................................................................................................45
4.1 UPS start-up......................................................................................................................45
4.1.1 Startup in normal mode.........................................................................................45
4.1.2 Start from Battery ..................................................................................................47
4.2 Procedure for Switching between Operation Modes......................................................47
4.2.1 Switching the UPS into Battery Mode from Normal Mode....................................47
4.2.2 Switching the UPS into Bypass Mode from Normal Mode.....................................47
4.2.3 Switching the UPS into Normal Mode from Bypass Mode.....................................48
4.2.4 Switching the UPS into Maintenance Bypass Mode from Normal Mode ..............48
4.2.5 Switching the UPS into Normal Mode fromMaintenance Bypass Mode ...............49
4.3 Battery Maintenance........................................................................................................49
4.4 EPO....................................................................................................................................50
5. Maintenance......................................................................................................................51
5.1 Precautions.......................................................................................................................51
5.2 Instruction for maintaining UPS.......................................................................................51
5.3. Instruction for Maintaining Battery String .....................................................................51
6. Product Specifications .....................................................................................................53
6.1 Applicable Standards........................................................................................................53
6.2 Environmental Characteristics .........................................................................................53
6.3 Mechanical Characteristics...............................................................................................54
6.4 Electrical Characteristics...................................................................................................54
6.4.1 Electrical Characteristics Input Rectifier.................................................................54
6.4.2 Electrical Characteristics Battery............................................................................55
6.4.3 Electrical Characteristics Inverter Output ..............................................................55
6.4.4 Electrical Characteristics Bypass Mains Input ........................................................56
6.5 Efficiency...........................................................................................................................56
6.6 Display and Interface........................................................................................................56
Annex. A Installation of internal batteries ........................................................................57
Annex. B Instructions of the parallel system for UPS .......................................................62

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Preface
Usage
The manual contains information on installation, use, operation and maintenance of UPS. Please
carefully read this manual prior to installation.
Users
Authorized Person
Note
Our company is providing a full range of technical support and service. Customers can contact our local
office or customer service center for help.
The manual will update irregularly, due to the product upgrading or other reasons.
Unless otherwise agreed, the manual is only used as guide for users and any statements or information
contained in this manual make no warranty expressed or implied.

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Safety Precautions
This manual contains information concerning the installation and operation of UPS. Please carefully read
this manual prior to installation.
The UPS cannot be put into operation until it is commissioned by engineers approved by the
manufacturer (or its agent). Not doing so could result in personnel safety risk, equipment malfunction
and invalidation of warranty.
Safety Message Definition
Danger: Serious human injury or even death may be caused, if this requirement is ignored.
Warning: Human injury or equipment damage may be caused, if this is requirement is ignored.
Attention: Equipment damage, loss of data or poor performance may be caused, if this requirement is
ignored.
Commissioning Engineer: The engineer who installs or operates the equipment should be well trained
in electricity and safety, and familiar with the operation, debug, and maintenance of the equipment.
Warning Label
The warning label indicates the possibility of human injury or equipment damage, and advised the
proper step to avoid the danger. In this manual, there are three types of warning labels as below.
Labels
Description
Serious human injury or even death may be caused, if this requirement is
ignored.
Human injury or equipment damage may be caused, if this requirement is
ignored.
Equipment damage, loss of data or poor performance may be caused, if this
requirement is ignored.
Safety Instruction
•Performed only by commissioning engineers.
•This UPS is designd for commercial and industrial applications only, and
is not intended for any use in life-support devices or system.
•Read all the warning labels carefully before operation, and follow the
instructions.
•When the system is running , do not touch the surface with this label, to
avoid any hurt of scald.
•ESD sensitive components inside the UPS, anti-ESD measure should be
taken before handling.

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Move & Installation
•Keep the equipment away from heat source or air outlets.
•In case of fire, use dry powder or gas extinguisher only, any liquid
extinguisher can result in electric shock.
•Don’t start the system if any damage or abnormal parts founded.
•Contacting the UPS with wet material or hands may be subject to electric
shock.
•Use proper facilities to handle and install the UPS. Shielding shoes,
protective clithes and other protective facilities are necessary to aviod
injury.
•During positioning, keep the UPS way from shock or vibration.
•Install the UPS in proper environment, more detail in section 2.3.
Debug & Operate
•Make sure the grounding cable is well connected before connecting the
power cables, the grounding cable and neutral cable must be in
accordance with the local and national codes practice.
•Before moving or re-connecting the cables, make sure to cut off all the
input power sources, and wait for at least 10 minutes for internal
discharge. Use a multi-meter to measure the voltage on terminals and
ensure the voltage is lower than 36V before operation.
•The earth leakage current of load will be carried by RCCB or RCD.
•Initial check and inspection should be performed after long time storing
of UPS.
Maintenance & Replacement
•All the equipment maintenance and servicing procedures involving
internal access need special tools and should be carried out only by
trained personnel. The components that can be accessed by opening the
protective cover with tools cannot be maintenance by user.
•This UPS full complies with “IEC /EN62040-1 General and safety
requirements for use in operator access area UPS”. Dangerous voltages
are present within the battery area.
•However, the risk of contact with these high voltages is minimized for
non-service personnel. Since the component with dangerous voltage can
only be touched by opening the protective cover with a tool, the
possibility of touching high voltage component is minimized. No risk
exists to any personnel when operating the equipment in the normal
manner, following the recommended operating procedures in this
manual.

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Battery Safety
•All the battery maintenance and servicing procedures involving internal
access need special tools or keys and should be carried out only by
trained personnel.
•When connected together, the battery terminal voltage will exceed
400Vdc 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 implicitly at all times.
Particular attention should be paid to the recommendations concerning
local environmental conditions and the provision of protective clothing,
first aid and fire-fighting facilities.
•Ambient temperature is a major factor in determining the battery life.
The nominal operating temperature of battery is 20℃. Operating above
this temperature will reduce the battery life. Periodically change the
battery according to the battery user manuals to ensure the back-up time
of UPS.
•Replace the batteries only with the same type and the same number, or
it may cause explosion or poor performance.
•When connecting the battery, follow the precautions for high-voltage
operation before accepting and using the battery, check the appearance
of the batteries. If the package is damaged, or the battery terminal is
corroded or rusted or the shell is broken, deformed or has leakage,
replace it with new product. Otherwise, battery capacity reduction,
electric leakage or fire may be caused.
•Before operating the battery, remove the finger ring, watch, necklace,
bracelet and any other metal jewelry.
•Wear rubber gloves.
•Eye protection should be worn to prevent injury from accidental
electrical arcs.
•Only use tools (e.g. wrench) with insulated handles.
•The batteries are very heavy. Please handle and lift the battery with
proper method to prevent any human injury or damage to the battery
terminal.
•Don’t decompose, modify or damage the battery. Otherwise, battery
short circuit, leakage or even human injury may be caused.
•The battery contains sulfuric acid. In normal operation, all the sulfuric
acid is closed inside in the battery. However, when the battery case is
broken, the acid will leak from the battery. Therefore, be sure to wear a
pair of protective glasses, rubber gloves and skirt when operating the
battery. Otherwise, you may become blind if acid enters your eyes and
your skin may be damaged by the acid.

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•At the end of battery life, the battery may have internal short circuit,
drain of electrolytic and erosion of positive/negative plates.
If this condition continues, the battery may have temperature out of
control, swell or leak. Be sure to replace the battery before these
phenomena happen.
•If a battery leaks electrolyte, or is otherwise physically damaged, it must
be replaced, stored in a container resistant to sulfuric acid and disposed
of in accordance with local regulations.
•If electrolyte comes into contact with the skin, the affected area should
be washed immediately with water.
Disposal
•Dispose of used battery according to the local instructions.

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1. UPS Structure and Introduction
1.1 UPS structure
1.1.1 UPS Configuration
The UPS configurations are provided in Table 1-1.
Table 1-1 UPS Configuration
Item
Components
Quantity
Remark
10-40kVA
Circuit Breakers
5
Standard
Dual Input
---
Standard
Parallel Card,
1
Optional
Dry Contact Card
1
Standard
Cold start
---
Optional
Dust filter
1
Optional
SNMP
1
Optional
1.1.2 UPS Outlook
The UPS outlooks are shown as figure 1-1.

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(a) The outlook of 10kVA/15kVA (unit: mm)

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(b) The outlook of 20kVA (unit: mm)

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(c) The outlook of 30kVA/40kVA (unit: mm)
Figure 1-1 UPS Outlook
1.1.3 Details of UPS front and rear views
The UPS front and rear views are shown as Figure 1-2.
(a) The details of front view for 10-40kVA

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(b) The details of rear view for 10kVA and 15kVA
(c) The details of rear view for 20kVA
Note: USB port is available in the parallel card

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(d) The details of rear view for 30kVA and 40kVA
Figure 1-2 Details of UPS front and rear views
1.2 Product Introduction
1.2.1 UPS System Description
The UPS is composed by the following part: rectifier, charger, inverter, static bypass switch and
Maintenance bypass breaker. One or several battery strings should be installed inside, to provide
backup energy once the utility fails. The UPS structures are shown in Figure 1-3.
Figure 1-3 UPS Block Diagram
Internal battery breaker
INTERNAL BATTERY
EXTERNAL

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1.2.2 Operation Mode
The UPS is an on-line, double-conversion UPS that permits operation in the following modes:
•Normal mode
•Battery mode
•Bypass mode
•Maintenance mode (manual bypass)
•ECO mode
•Frequency Converter mode
1.2.2.1 Normal Mode
The inverter continuously supplies AC power to the critical AC load. The rectifier derives
power from the AC mains input source and supplies DC power to the inverter, meanwhile
the charger derives the DC power from the rectifier and charger its associated backup
batteries.
Figure 1-4 Normal mode operation diagram
1.2.2.2 Battery Mode
Upon failure of the AC mains input power, the inverter will obtain power from the batteries,
and supply AC power to the critical AC load. There is no interruption to the critical load.
After restoration of the AC mains input power, UPS will transfer automatically to normal
mode without users’ intervention.
Figure 1-5 Battery Mode operation diagram
Note: With the function of “Battery Cold Start”, the UPS could start without utility.

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1.2.2.3 Bypass Mode
If the inverter overload capacity is exceeded under normal mode, or if the inverter
becomes unavailable for any reason, the static switch will perform a transfer of the load
from the inverter to the bypass source, without interruption to critical AC load. If the
inverter is asynchronous with the bypass source, an interruption would exist in the
transfer from the inverter to the bypass. This is to avoid large cross current due to the
paralleling of unsynchronized AC sources. This interruption is programmable, but the
typically setting is less than 3/4 of an electrical cycle, e.g. less than 15ms on 50Hz system
or less than 12,5ms on 60Hz system. The action of transfer/re-transfer can be done by
the command through the monitor screen.
Figure 1-6 Bypass mode operation diagram
1.2.2.4 Maintenance Mode (Manual Bypass)
A manual bypass switch is available to ensure continuity of supply to the critical load
when the UPS becomes unavailable e.g. during a maintenance procedure.
Figure 1-7 Maintenance mode operation diagram
Danger
During Maintenance mode, dangerous voltages are present on the terminal of input, output,
neutral, battery and in breakers terminals, even with all switch and the LCD turned off.

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1.2.2.5 ECO Mode
To improve system efficiency, UPS system works in Bypass Mode at normal time, and the
inverter is standby, when the utility from the bypass fails, the UPS will transfer to Battery
Mode and the inverter powers the load.
Figure 1-8 ECO Mode operation diagram
Note
There is a short interruption time (less than 10ms) when transferring from ECO mode to
battery mode, it must be sure that the interruption has no effect on loads.
1.2.2.6 Frequency Converter Mode
By setting the UPS to “Frequency Converter Mode”, the UPS present a stable output of
fixed frequency (50 or 60Hz), and the bypass static switch is not available.
Attention: UPS Maximum Load in converter mode is 50% of nominal power.

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2. Installation
2.1 Location
As each site/country has its own requirements, the installation instructions in this section are as a
guide for the general procedures and practices that should be observed by the installing engineer.
2.1.1 Installation Environment
The UPS is intended for indoor installation and uses forced convection cooling by internal fans.
Please make sure there is enough space for the UPS ventilation and cooling.
Keep the UPS far away from water, heat and inflammable and explosive corrosive material. Avoid
installing the UPS in the environment with direct sunlight, dust, volatile gases, corrosive material
and high salinity.
Avoid installing the UPS in the environment with conductive dirt.
The best operating environment temperature for batteries is 20-25℃. Operating above 25℃ will
reduce the battery life, and operation below 20℃ will reduce the battery capacity.
The battery will generate a little amount of hydrogen and oxygen during charging; ensure the fresh
air volume of the battery installation environment must meet EN50272-2001 and EN-IEC62485-2
requirements.
When external batteries are used, the battery circuit breakers (or fuses) must be mounted as close
as possible to the batteries, and the connecting cables should be as short as possible.
2.1.2 Site Selection
Ensure the ground or installation platform can bear the weight of the UPS cabinet, batteries and
battery racks.
No vibration and less than 5 degree inclination horizontally.
The equipment should be stored in a room so as to protect it against excessive humidity and heat
sources.
The battery needs to be stored in dry and cool place with good ventilation. The most suitable
storage temperature is 5℃ to 25℃.
2.1.3 Size and Weight
Ensure there is enough space for the placement of the UPS. The room reserved for the UPS cabinet
is shown in Figure 2-1.
Attention
Ensure there is at least 0,8m on front of the cabinet so as to easily maintain the power part and at
least 0,5m behind for ventilation and cooling. The room reserved for the cabinet is shown in
Figure2-1.