Sofar solar BTS Series User manual

Shenzhen SOFARSOLAR Co., Ltd.
BTS Series Usual Manual
Intelligent Batteries System
Product Model: BTS E5~E20-DS5

BTS E5~20-DS5 user manual V1.0
Copyright © Shenzhen SOFARSOLAR Co., Ltd
I
Contents
Preface ............................................................................................................... III
1. Basic Safety Information ............................................................................... 1
1.1. Requirement for Installation and Maintenance ............................ 1
1.2. Description of safety information symbols ....................................4
2. Product Introduction .......................................................................................6
2.1. Product overview .............................................................................. 6
2.2. Product Model Description ..............................................................7
2.3. Product Appearance .........................................................................9
2.4. Indicator lights description .............................................................10
2.5. Product label ................................................................................... 14
2.6. System capacity expansion description ......................................15
3. Product Installation ...................................................................................... 16
3.1. Checking Before Installation ......................................................... 16
3.2. Preparation for Installation Tools ..................................................19
3.3. Installation environment .................................................................21
3.4. Installation Space ........................................................................... 22
3.5. Battery system installation ............................................................ 22
4. Electrical Connection ...................................................................................27
4.1. Preparation of Connection Cables ...............................................28
4.2. Electrical Connection for Internal System ...................................28
4.3. External Electrical Connection ..................................................... 33
4.3.1 External Electrical Connection ..................................................... 33
4.4. Battery parallel installation ............................................................ 40
4.5. Fuse replacement ...........................................................................40
4.6. Install the protective cover ............................................................ 41
5. Commissioning ............................................................................................. 43
5.1. Double Check ..................................................................................43
5.2. Electrify for the First Time（Important）.....................................43
5.3. Battery Parameter Settings ...........................................................43
5.4. Software Update ............................................................................. 45

BTS E5~20-DS5 user manual V1.0
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5.5. Battery Powered Off .......................................................................46
6. Trouble shooting and maintenance ........................................................... 47
6.1. Troubleshooting .............................................................................. 47
6.2. Daily Maintenance .......................................................................... 49
6.3. Battery Module Storage Requirements and Power Supply ..... 50
7. Technical Parameters ..................................................................................52
8. Manufacturer's Warranty and Liability Terms .......................................... 54

BTS E5~20-DS5 user manualV1.1
Copyright © Shenzhen SOFARSOLAR Co., Ltd
III
Preface
Notice
The purchased products, services and features are governed by the
commercial contract made by the Company. All or part of the products
and features described in this document may not be within the purchase
scope. Except as otherwise agreed herein, no representations or
warranties, express or implied, are made as to the contents of this
document.
Save this Instruction
This manual must be considered as an integral part of the equipment.
Customer can print the electronic version to hard copy and keeping
properly for future reference. Anyone who operates the device at any time
must operate in accordance with the requirements of this manual.
Copyright Declaration
The copyright of this manual belongs to Shenzhen SOFARSOLAR Co.,
Ltd. Any corporation or individual should not plagiarize, partially cope or
fully copy (including software, etc.), not allow to duplication and
publishment in any form and any way. All rights reserved, SOFARSOLAR
reserves the right of final interpretation. This manual subject to modify
according to user's or customer's feedback. Please check our website at
http://www.sofarsolar.com for lasted version.
Document Updates
V1.0 2022-5-24
Initial version
V1.1 2022-6-13
Update Product Label
Update 7.Technical Parameters

BTS E5~20-DS5 user manualV1.1
Copyright © Shenzhen SOFARSOLAR Co., Ltd
IV
Outline
It describes the assembly, installation, commissioning ,maintenance and
failure of the product. Please read it carefully before operating.
Scope of Validity
This product user manual describes the installation, electrical connection,
debugging, maintenance and troubleshooting of BTS series intelligent
battery system. The series includes the following models：
BTS E5-DS5
BTS E10-DS5
BTS E15-DS5
BTS E20-DS5
Target Group
This document is intended for professional electrical engineers who are
responsible for battery installation and commissioning, including technical
support engineers, system engineers, and electrical engineers
Symbols Used
In order to ensure the personal and property safety of users when using
BTS series intelligent battery system, as well as the efficient use of this
product, the manual provides relevant safe operation information and
highlights it with corresponding symbols. These stressed messages must
be fully understood and absolutely adhered to avoid personal injury and
property damage. The symbols used in this manual are listed below.
“Danger”indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Danger
“Warning”indicates a hazardous situation which, if not
avoided, could result in death or serious injury
Warning
“Caution”indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury
Caution
“Attention”indicates there are potential risks, if fail to
prevent, may lead to equipment cannot normally or

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V
property damage.
Attention
“Note”provides additional information and tips that are
valuable for the optimal operation of the product, will
help you to solve a problem or save your time.
Note

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1. Basic Safety Information
Please read the instruction carefully. Faulty operation may cause serious
injury or death .
1.1. Requirement for Installation and Maintenance
The installation of BTS series intelligent battery system must be in full
compliance with national and local laws and regulations.
Read and understand all instructions contained in this manual and
familiarize yourself with safety symbols before installing and
commissioning the device.
For any maintenance or repair, please contact the nearest authorized
repair center. For information about the nearest authorization center,
contact your reseller. Do not repair by yourself, which may cause personal
injury or property injury.
Before installing and maintaining the device, disconnect the device from
the external device using the DC switch. Otherwise, the high voltage may
cause serious injury.
SOFARSOLAR will not be responsible for any personal injury or property
injury caused by improper use.
Installation and maintenance personnel requirements
If you have any question or problem when you read the
following information, please contact Shenzhen
SOFARSOLAR CO., Ltd.
Note

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The personnel responsible for installation and maintenance of the
equipment for the first voyage must first receive strict training, understand
various safety precautions and master correct operation methods.
Only qualified professionals or trained personnel are allowed to
install, operate, and maintain the device.
Only qualified professionals are allowed to remove safety facilities
and repair devices.
The personnel, including the operators, trained personnel, and
professional personnel, who operate the equipment should have the
special operation qualification required by the local state, such as the
qualification of high voltage operation, height climbing, and special
equipment operation.
Only professional or authorized personnel can replace equipment or
components (including software).
Note：
Professional personnel: those who have the training or operation
experience of equipment and are able to understand the potential
sources and magnitude of hazards in the process of equipment
installation, operation and maintenance.
Trained personnel: personnel who have received the appropriate
technical training and have the necessary experience are aware of
the risks that may be posed to them in performing a certain operation
and can take measures to minimize the risks to themselves or other
personnel.
Operators: operators who may have access to the equipment except
trained and professional personnel.
Assembly Condition
Assemble the BTS intelligent battery system as detailed in the following
sections of this manual. Place the battery in a position that can be fixed

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on the edge and ensure that it is placed vertically. A suitable place for
installation of electrical equipment should be selected to ensure sufficient
space for fire escape for maintenance in case of failure. Maintain proper
ventilation to ensure adequate air circulation for cooling, and air humidity
is recommended to be less than <90% during assembly.
Transportation Requirement
The Batteries are in the good electrical and physical condition when it
ship out from factory. During transport, battery module must be placed in
its original package or other proper package. Transportation company
should responsible for any damage during transport period. Please check
the battery thoroughly when taking delivery. If you find any packing
problems that may cause the damage of inverter or any visible damage,
please notice the responsible transportation company immediately. You
can ask your installer or SOFARSOLAR for help is necessary.
This product contains battery module through UN38.3, belongs to the
ninth category of dangerous goods. Therefore, loading and unloading
must comply with local laws and regulations and industry standards
during transportation. Rough loading and unloading may cause short
circuit or damage to batteries in containers, which may result in battery
leakage, breakage, explosion, or fire.
Requirement During the Transportation
Shipping complies with the IMDG CODE and the International
Maritime Dangerous Goods CODE.
For land transportation, comply with ADR or JT T617 shipping
requirements
Meet the regulatory requirements of the transport regulatory
authorities of the country of origin, route and destination.
Comply with international regulations for the transport of
dangerous goods and the supervision requirements of the

BTS E5~20-DS5 user manualV1.1
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corresponding national transport regulatory authorities.
1.2. Description of safety information symbols
High voltage of battery may be harmful to health!
Only certified engineer can operate the product;
Juveniles, Disable, should not use this product;
Keep this product out of the reach of children;
Danger
Caution of burn injuries due to hot enclosure!
Only touch the screen and pressing key of the product
while it is working
Caution
Batteries should be grounded in accordance to the
requirements of the local electrical grid company
Attention
To ensure that the battery is used in the equipment
system authorized by SOFARSOLAR, and the battery is
damaged or other losses caused by illegal use or
unauthorized use of the equipment by SOFARSOLAR.
SOFARSOLAR has the right not to do warranty, not to
bear joint liability.
Warning
Sings on the battery module
The battery module carries a number of safety related labels. Make sure
to read and understand the labels carefully before installing the device.
Symbols
Name
Explanation
This is a residual
voltage in the
battery module!
There is a high voltage,when the
battery is powered on. After the
battery is powered off, the internal
capacitor is still charged，operator
should wait for 5 minutes to ensure
the capacitor is completely
discharged.
Caution of high
voltage and
electric shock
The battery module operates at high
voltages. Prior to performing any
work on the product, disconnect the

BTS E5~20-DS5 user manualV1.1
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product from voltage sources. All
work on the product must be carried
out by qualified persons only.
Caution of hot
surface
The battery module can get hot
during operation. Avoid contact
during operation.
Grounding
Terminal
Connect the battery module to the
ground bar for grounding protection
Observe the
documentation
Read all documentation supplied
with the product before install
Sings on the battery distribution unit
The battery distribution unit carries a number of safety related labels.
Make sure to read and understand the labels carefully before installing
the device.
Symbols
Name
Explanation
This is a
residual voltage
in the battery
module!
There is a high voltage,when the
battery is powered on. After the
battery is powered off, the internal
capacitor is still charged，operator
should wait for 5 minutes to ensure
the capacitor is completely
discharged.
Caution of high
voltage and
electric shock
The battery module operates at high
voltages. Prior to performing any work
on the product, disconnect the product
from voltage sources. All work on the
product must be carried out by
qualified persons only.
Caution of hot
surface
The battery module can get hot during
operation. Avoid contact during
operation.
Grounding
Terminal
Connect the battery module to the
ground bar for grounding protection
Observe the
documentation
Read all documentation supplied with
the product before install

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2. Product Introduction
2.1. Product overview
BTS series intelligent battery system is mainly composed of battery
module and battery distribution unit. The input and output voltages are
high DC voltage. The system adopts modular design and stacked
installation method. The capacity can be flexibly configured based on
actual requirements. The capacity ranges is 5kWh ~ 40kWh.
The main features are as follows：
Full modular design, easy to install and transport；
Current balance between battery modules, higher battery available
capacity；
Capacity Expansion by Stages；
Low power consumption of battery；
One key activate/shutdown.

BTS E5~20-DS5 user manualV1.1
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Figure.2-1 BTS series application principle diagram
2.2. Product Model Description
Battery module：
Identifiers
Meaning
Specification
①
Product series name
SOFARSOLAR BTS series
battery module name
②
Battery module energy
grade
5K: Battery module energy is
5kWh

BTS E5~20-DS5 user manualV1.1
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Battery distribution unit：
Identifiers
Meaning
Specification
①
Product series name
SOFARSOLAR BTS series
battery module name
②
Battery module energy
grade
5K: Battery module energy is
5kWh
③
System Unit
BDU: Battery distribution unit
Battery system：
Identifiers
Meaning
Specification
①
Product series
name
SOFARSOLAR BTS series battery
module name
②
Energy grade
E5: Battery total energy is 5kWh
E10: Battery total energy is 10kWh
E15: Battery total energy is 15kWh
E20: Battery total energy is 20kWh
③
Battery module
mode
DS5：Battery module is BTS 5K

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2.3. Product Appearance
Figure .2-2 System appearance
1 Indicator light 2 DC switch 3 Battery distribution unit
4 Battery module 5 Base 6 Black startup switch 7 Heat sink
Battery distribution unit：
Figure.2-3 Schematic diagram of battery power distribution unit ports
1 Battery distribution unit 2 Black startup switch 3 Battery input（BAT IN）
4 BDU cascading communication port(Link) 5 BDU communication input（COM-IN）
6 Grounding hole 7 DC switch 8 BDU communication output（COM-OUT）
9 Fuse 10 Battery output（BAT Out）11 Grounding hole
Front surface
Back surface
Left surface
Right surface
Front surface

BTS E5~20-DS5 user manualV1.1
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Battery module port：
Figure.2-4 Battery module port diagram
1 Battery module 2 Left side handle 3 Output terminal B+
4 Output terminal B- 5 Grounding hole 6 Communication output （Link Port Out ）
7 Communication input（Link Port In）8 Right side handle
2.4. Indicator lights description
Figure.2-5 Indicator diagram
Normal status indicator light：
Table 2-1. Normal status indicator light definition
Status
light
Alar
m
light
SOC light
L1
L2
L3
L4
L5
Shutdown
Off
Off
Off
Off
Off
Off
Off
Front surface
Left surface
Right surface
Front surface

BTS E5~20-DS5 user manualV1.1
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Standby
Green
light
flashing
Off
Display according to the battery SOC
value
Updating
Blue
light
flashing
Off
Charge
Blue
light ON
Off
Discharge
Green
light ON
Off
SOC Indicator light definition：
Table 2-2. SOC indicator light definition while charging
SOC value
SOC light
L1
L2
L3
L4
L5
0%~5%
Off
Off
Off
Off
Off
6%~25%
Flashing
Off
Off
Off
Off
26%~50%
ON
Flashing
Off
Off
Off
52%~75%
ON
ON
Flashing
Off
Off
76%~95%
ON
ON
ON
Flashing
Off
96%~100%
ON
ON
ON
ON
Flashing
Table 2-3. SOC indicator light definition while discharging
SOC Value
SOC light
L1
L2
L3
L4
L5
0%~5%
Off
Off
Off
Off
Off
6%~25%
ON
Off
Off
Off
Off
26%~50%
ON
ON
Off
Off
Off
52%~75%
ON
ON
ON
Off
Off
76%~95%
ON
ON
ON
ON
Off

BTS E5~20-DS5 user manualV1.1
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96%~100%
ON
ON
ON
ON
ON
Alarm status indicator：
Alarm
status
Status
light
Alarm
light
SOC light
L1
L2
L3
L4
L5
High
temperature
alarm
Off
Flashing
ON
Off
Off
Off
Off
Low
temperature
alarm
Off
Flashing
Off
ON
Off
Off
Off
Over
voltage
alarm
Off
Flashing
Off
Off
ON
Off
Off
Under
voltage
alarm
Off
Flashing
Off
Off
Off
ON
Off
Over
current
alarm
Off
Flashing
Off
Off
Off
Off
ON
Battery cell
temperature
differential
abnormal
Off
Flashing
ON
ON
Off
Off
Off
Monomer
differential
pressure is
too large
Off
Flashing
Off
ON
ON
Off
Off
Abnormal
ambient
temperature
Off
Flashing
Off
Off
ON
ON
Off

BTS E5~20-DS5 user manualV1.1
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Other
Off
Flashing
ON
ON
ON
ON
ON
Fault status indicator light：
Alarm status
Statu
s light
Alarm
light
SOC light
L1
L2
L3
L4
L5
High temperature
fault
Off
ON
ON
Off
Off
Off
Off
Low temperature
fault
Off
ON
Off
ON
Off
Off
Off
Battery over
voltage
Off
ON
Off
Off
ON
Off
Off
Battery low
voltage
Off
ON
Off
Off
Off
ON
Off
Battery over
current
Off
ON
Off
Off
Off
Off
ON
Battery cell
temperature
differential
protection
Off
ON
ON
ON
Off
Off
Off
Monomer
differential
pressure
protection
Off
ON
Off
ON
ON
Off
Off
Ambient
temperature
protection
Off
ON
Off
Off
ON
ON
Off
Communication
fault
Off
ON
ON
Off
ON
Off
Off
Sampling fault
Off
ON
ON
Off
Off
ON
Off
Battery cell fault
Off
ON
Off
ON
Off
Off
Off
BMS internal fault
Off
ON
Off
ON
ON
ON
Off

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PCU internal fault
Off
ON
ON
ON
ON
Off
Off
Fuse damaged
Off
ON
ON
Off
ON
ON
Off
Terminal
connection
abnormal.
Off
ON
ON
ON
Off
ON
Off
Software version
is inconsistent
Off
ON
ON
ON
ON
ON
Off
Other
Off
ON
ON
ON
ON
ON
ON
2.5. Product label
Battery distribution unit：
Figure.2-6 Battery distribution unit label
Battery module：
Figure.2-7 Battery module label