Sungrow PowerTitan-ST2752UX User guide

PowerTitan-
ST2752UXBattery Energy Storage
SystemSystem ManualST2752UX-
SEN-Ver21-202204
System Manual
Battery Energy Storage System
PowerTitan-ST2752UX
ST2752UX-SEN-Ver21-202204

I
All Rights Reserved
All Rights Reserved
No part of this document can be reproduced in any form or by any means without the prior
written permission of SUNGROW ENERGY STORAGE TECHNOLOGY CO., LTD (-
hereinafter "SUNGROW").
Trademarks
and other Sungrow trademarks used in this manual are owned by
SUNGROW.
All other trademarks or registered trademarks mentioned in this manual are owned by their
respective owners.
Software Licenses
• It is prohibited to use data contained in firmware or software developed by SUNGROW,
in part or in full, for commercial purposes by any means.
• It is prohibited to perform reverse engineering, cracking, or any other operations that
compromise the original program design of the software developed by SUNGROW.

II
About This Manual
This manual describes the transportation and storage, mechanical installation, electrical
connection, power-on and power-off operation, troubleshooting, and maintenance of the
BESS.
Target Group
This manual is for operators of the power storage plant and qualified technical personnel.
The BESS must and can only be installed by professional technicians who meet the
following requirements:
• Has been trained
• Read this manual thoroughly and understand the safety instructions related to
operations
• Be familiar with local standards and relevant safety regulations of electrical systems
How to Use This Manual
Please read this manual carefully before using the product and keep it properly at a place
for easy access.
In order to provide customers with the best usage experience, the products and product
manuals are always in the process of improvement and upgrade. If the manual received is
slightly inconsistent with the product, it may be a result of product version upgrade, and the
actual product shall prevail.
Contents of the manual may be updated and amended continuously, so it is possible that
there may be some errors or slight inconsistency with the actual product. Please refer to the
actual product purchased, and the latest manual can be obtained from support.
sungrowpower.com or sales channels.
The figures in this manual are for reference only. The actual product received may differ.
Symbol Explanations
To ensure the safety of the users and their properties when they use the product and to
make sure that the product is used in an optimal and efficient manner, this manual provides
users with the relevant safety information highlighted by the following symbols.
Below is a list of symbols that are used in this manual. Review them carefully to make better
use of this manual.
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
Indicates a moderately hazardous situation which, if not avoided, will result in
death or serious injury.

III
Indicates a slightly hazardous situation which, if not avoided, may result in minor
or moderate injury.
Indicates a potential hazard which, if not avoided, will result in device malfunction
or property damage.
“NOTE” indicates additional information, emphasized contents or tips that may be
helpful, e.g., to help you solve problems or save time.
Symbol on Products
Always note hazard warnings on the machine body, including:
Marks Explanation
High voltage inside! Risk of electric shock by touching it!
This symbol indicates a protective ground terminal which needs to
be firmly grounded to ensure the safety of operators.
Read the instructions before performing any operation on the
product.
Live parts! Do not touch them until 5 minutes after disconnection
from the power sources.
Pay attention to the danger. Do not operate this product in the live
status!
Pay attention to heavy objects. Lifting of heavy objects may lead to
back injuries. Please lift heavy objects with appropriate tools.
Pay attention to explosion.
Pay attention to corrosion.
Do not dispose of this product as household waste.
No fire.
There should be a medical center nearby.

IV
Marks Explanation
In case of contact with eyes, rinse the eyes immediately with running
water or normal saline; and seek medical help in time.
It is required to wear goggles.
Abbreviations
Complete designation Abbreviations
Battery Energy Storage System BESS
Energy Storage System ESS
Battery Connection Panel BCP
Battery Supply Panel BSP
Power Conversion System PCS
DC/DC Converter DC/DC
Fire Suppression System FSS
Heating, ventilating and air conditioning HVAC
SCADA (Supervisory Control And Data
Acquisition) System SCADA System
Liquid Cooling System LCS
Local Controller LC
Energy Management System EMS
Switching Mode Power Supply SMPS
Battery Module BM (also referred to as PACK)
Battery Cluster BC (also referred to as RACK)
Battery Management Unit BMU
Battery Cluster Management Unit BCMU (collectively referred to as CMU)
Battery System Management Unit BSMU (collectively referred to as SMU)
Battery Management System BMS
Switch Gear S/G
State Of Charge SOC
State Of Energy SOE
State Of Health SOH
State Of Safety SOS
Unless otherwise specified, devices in this manual are referred to as the abbreviations
above.

V
Contents
All Rights Reserved .....................................................................................................I
About This Manual......................................................................................................II
1 Safety Precautions ...........................................................................................1
1.1 Personnel Requirements.................................................................................1
1.2 Electrical Safety .............................................................................................1
1.3 Hoisting and Transportation.............................................................................2
1.4 Installation and Wiring.....................................................................................2
1.5 Operation and Maintenance ............................................................................3
2 Product Description ..........................................................................................5
2.1 Product Introduction........................................................................................5
2.2 External Design..............................................................................................5
2.2.1 Container Appearance...........................................................................5
2.2.2 Mechanical Parameters.........................................................................7
2.2.3 Ventilation Design .................................................................................7
2.3 Internal Design...............................................................................................8
2.3.1 Internal Equipment................................................................................8
2.3.2 DC/DC .................................................................................................9
2.3.3 Battery Introduction .............................................................................10
3 Transport and Storage ...................................................................................14
3.1 Precautions..................................................................................................14
3.2 Transport Methods .......................................................................................14
3.3 Crating Before Transport...............................................................................14
3.4 Requirements for Transportation....................................................................17
3.5 Unpacking on Arrival.....................................................................................20
3.6 Storage Requirements ..................................................................................22
4 Mechanical Installation ..................................................................................24
4.1 Inspection Before Installation.........................................................................24
4.1.1 Deliverables Inspection .......................................................................24
4.1.2 Product Inspection ..............................................................................24
4.2 Installation Environment Requirements ..........................................................24
4.2.1 Installation Site Requirement ...............................................................24

VI
4.2.2 Foundation Requirements....................................................................25
4.2.3 Installation Spacing Requirement .........................................................26
4.3 Hoisting and Fixing .......................................................................................27
4.3.1 Lifting Precautions ..............................................................................27
4.3.2 Lifting .................................................................................................28
4.3.3 Fixed Installation.................................................................................30
4.3.4 Film Removal......................................................................................32
5 Electrical Connection .....................................................................................34
5.1 Precautions..................................................................................................34
5.2 Overview of Wiring Area................................................................................34
5.3 Preparation Before Wiring .............................................................................36
5.3.1 Preparing Installation Tools ..................................................................36
5.3.2 Opening the Container Door and Cabinet Door......................................37
5.3.3 Preparing Cables ................................................................................38
5.3.4 Copper Wire Connection......................................................................39
5.3.5 Cable Entry Design .............................................................................39
5.4 Ground Connection ......................................................................................40
5.5 DC Output Port Connection ...........................................................................42
5.6 Auxiliary Power Supply Port Connection.........................................................42
5.7 Ethernet Communication Port Connection ......................................................44
5.8 Post-wiring Operations..................................................................................44
6 Battery Connection ........................................................................................46
6.1 Precautions..................................................................................................46
6.2 Cable Connection.........................................................................................47
7 Powering up and Shutdown ..........................................................................49
7.1 Power-on Operation......................................................................................49
7.1.1 Inspection Before Powering up.............................................................49
7.1.2 Powering on Steps ..............................................................................49
7.2 Shutdown ....................................................................................................50
7.2.1 Planned Powering off ..........................................................................50
7.2.2 Unplanned (Emergency) Shutdown ......................................................51
8 Fire Suppression ............................................................................................52
8.1 General Rules ..............................................................................................52
8.2 Fire Suppression Equipment .........................................................................52
8.3 Exhaust System ...........................................................................................53
8.4 Water Fire Suppression System.....................................................................54

VII
8.5 Aerosol Fire Suppression System ..................................................................55
9 Troubleshooting ..............................................................................................56
10 Routine Maintenance ..................................................................................57
10.1 Precautions Before Maintenance .................................................................57
10.2 Maintenance Item and Period ......................................................................58
10.2.1 Maintenance (Every two years) ..........................................................58
10.2.2 Maintenance (Once a year) ................................................................58
10.2.3 Maintenance (Every half a year to once a year) ...................................59
10.3 Maintenance of Liquid Cooling System ......................................................... 60
10.4 Maintenance of DC/DC ...............................................................................62
10.5 Container Maintenance ...............................................................................63
10.5.1 Cleaning Container Appearance.........................................................63
10.5.2 Checking Door Locks and Hinges .......................................................67
10.5.3 Checking Sealing Strips.....................................................................67
10.6 Battery Maintenance...................................................................................67
10.6.1 Regular Maintenance and Maintenance Cycle ..................................... 67
10.6.2 Maintenance Precautions ..................................................................70
10.6.3 Maintenance.....................................................................................70
10.7 Coolant Replacement .................................................................................72
11 Appendix ........................................................................................................73
11.1 System Parameters ....................................................................................73
11.2 Tightening Torques .....................................................................................77
11.3 Quality Assurance.......................................................................................77
11.4 Contact Information.....................................................................................78

1
1Safety Precautions
1.1 Personnel Requirements
The hoisting, transportation, installation, wiring, operation, and maintenance of the BESS
must be carried out by professional electricians in accordance with local regulations. The
professional technician is required to meet the following requirements:
• Know electronic, electrical wiring and mechanical expertise, and be familiar with
electrical and mechanical schematics.
• Be familiar with the composition and working principles of the BESS and its front- and
rear-level equipment.
• Have received professional training related to the installation and commissioning of
electrical equipment.
• Be able to quickly respond to hazards or emergencies that occur during installation and
commissioning.
• Be familiar with the relevant standards and specifications of the country/region where the
project is located.
1.2 Electrical Safety
• Touching the power grid or the contact points and terminals in the devices
connected to the power grid may lead to electric shock!
• The battery side or the power grid side may generate voltage. Always use a
standard voltmeter to ensure that there is no voltage before touching.
Lethal voltages are present inside the device!
• Note and observe the warnings on the product.
• Respect all safety precautions listed in this manual and other pertinent
documents.
• Respect the protection requirements and precautions of the lithium battery.

2
Electricity may still exist in the battery when the power supply of the BESS is
disconnected. Wait 5 minutes to ensure the equipment is completely voltage-free
before operating.
All operations, such as hoisting, transportation, installation, wiring, operation, and
maintenance must comply with the relevant codes and regulations of the region
where the project is located.
Always use the product in accordance with the requirements described in this
manual. Otherwise, equipment damage may occur.
To prevent misuse or accidents caused by unrelated personnel, observe the
following precautions:
• Post prominent warning signs around the BESS to prevent accidents caused by
false switching.
• Place necessary warning signs or barriers near the product.
1.3 Hoisting and Transportation
• Follow the procedure of work of heights when walking on the top of the
container.
1.4 Installation and Wiring
In the whole process of mechanical installation, the relevant standards and
requirements of the project location must be strictly observed.
1 Safety Precautions System Manual

3
Only equipment designated by SUNGROW ENERGY STORAGE TECHNOLOGY CO.,
LTD. (hereinafter referred to as "SUNGROW") can be used. Failure to use
equipment designated by SUNGROW may cause damage to the protection
function and injury to personnel.
1.5 Operation and Maintenance
Personal protective equipment is required for maintenance and service of the
BESS.
Maintenance personnel must wear protective equipment such goggles, helmets,
insulated shoes, gloves, etc.
There are no user-maintainable parts inside the battery unit.
Only personnel approved by SUNGROW can remove, replace and dispose of the
batteries. Users are not allowed to maintain batteries without guidance.
To avoid electric shock, do not perform any other maintenance operations beyond
those described in this manual.
If necessary, contact Sungrow Customer Service for maintenance.
To ensure continuous fire protection, replacement of internal components should
only be performed by professional personnel.
Dismantling or burning the battery may cause it to catch fire.
Do not spray paint any internal or external component of the product.
Do not use cleaning agents to clean the product or expose it to harsh chemicals.
System Manual 1 Safety Precautions

4
Protective tools such as goggles are required when carrying out coolant (glycol
solution) or liquid cooling pipeline maintenance.
1 Safety Precautions System Manual

5
2Product Description
2.1 Product Introduction
PowerTitan is mainly used in large and medium-sized energy storage power plants. It
adopts standard BESS design and modular design to realize the integration of energy
storage system. Through liquid cooling method, it can better balance the system
temperature. Through the combination of power storage equipment, power conversion
equipment and electronic devices, together with intelligent operation and maintenance, it
contributes to easier installation and O&M. Through systematic safety design, it ensures a
more efficient battery performance and longer service life.
figure 2-1 System networking diagram
*The above pictures are for reference only, please refer to the actual product received!
2.2 External Design
2.2.1 Container Appearance
The appearance of BESS is shown in the following figure:

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figure 2-2 Appearance
No. Name
A LED indicator
B Emergency stop button
C Door lock
D Air inlet
E Grounding point
F Nameplate
G Air inlet for fire suppression system
* The figure is for reference only. The product received may differ.
LED Indicator
The LED indicators are located at the top of the product. Colors and status of indicators are
explained below.
table 2-1 Indicator status
Status Description
Steady on The system works normally (-
charge and discharge)
2S periodic slow blinking
(Breathing light) The system is normal, no
charging and discharging.
Steady on A fault occurs (auxiliary circuit
breaker does not trip)
Off Auxiliary circuit breaker trips
2 Product Description System Manual

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Emergency Stop Button
In case of emergency, press this button to disconnect the electrical connection inside the
BESS(DCDC, PCS and LCS to be shut down).
2.2.2 Mechanical Parameters
Dimensions
The external dimensions of the container are shown in the figure.
figure 2-3 Dimensions of BESS
*The figure is for reference only and the actual product shall prevail!
The clearance space
figure 2-4 The diagram of the required space when the door is opened
*The figure is for reference only and the actual product shall prevail!
2.2.3 Ventilation Design
The BESS intakes air from the front side and expels it from the top, as shown below.
System Manual 2 Product Description

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figure 2-5 Schematic diagram of ventilation
*The figure is for reference only and the actual product shall prevail!
2.3 Internal Design
2.3.1 Internal Equipment
The main electrical equipment in the BESS is shown in the figure below.
figure 2-6 BESS internal equipment
* The figure is for reference only. The product received may differ.
No. Name
A LCS
B Rack
C DC/DC
2 Product Description System Manual

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No. Name
D BSP
E BCP
2.3.2 DC/DC
Product Appearance
The DC/DC is shown in the figure below.
figure 2-7 Product Appearance
* The image shown here is for reference only. The actual product received may differ.
No. Name Description
1 DC Switch To safely stop the power conversion between the DC/DC and
the battery.
2 LED indicator To indicate the current working status of the DC/DC.
3Wiring area Including DC side terminals and communication terminals.
4Grounding
terminal For protective grounding of the equipment.
5Auxiliary
power switch
To safely cut off the power supply electrical connection of the
DC/DC.
6Emergency
stop button
Only for emergencies. Press this button to immediately shut
down the device.
System Manual 2 Product Description

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LED Indicator Panel
This panel is for users to check the current working status of the DC/DC.
table 2-2 LED indicator status description
Indicat-
or Status Status description
Blue
Steady on DC/DC is in operation.
Fast blinking
(Interval: 0.2s)
Bluetooth is connected and there is data
communication;
No fault is detected.
Slow blinking
(Interval: 2s)
The DC/DC is powered on, and is in the
emergency stop state, standby state or start-up
state.
Red
Steady on A fault occurred (The DC/DC shuts down
immediately).
Quick blinking
(Interval: 0.2s)
Bluetooth is connected and there is data
communicationl;
A fault occurred.
Off
Off The DC/DC is powered off.
2.3.3 Battery Introduction
Standardized and unitized battery modules are developed based on lithium-iron cells. The
battery clusters are connected with DC/DC in series, then DC/DC are connected in parallel
in PV side to the supporting power conversion system (PCS) to form energy storage
systems(ESS) and store and release electric energy.
2 Product Description System Manual