Sofar BTS E5-DS5 User manual

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
I

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
I
Table of Content
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................................................................................ 7
2.1 Product overview............................................................................ 7
2.2 Product Model Description......................................................... 8
2.3 Product Appearance....................................................................10
2.4 Indicator lights description....................................................... 12
2.5 Product label.................................................................................. 16
2.6 System capacity expansion description............................... 17
3. Product Installation................................................................................. 19
3.1 Checking Before Installation.....................................................19
3.2 Preparation for Installation Tools............................................ 22
3.3 Installation environment............................................................ 24
3.4 Installation Space..........................................................................25
3.5 Battery system installation........................................................ 25
4. Electrical Connection..............................................................................29
4.1 Preparation of Connection Cables..........................................30
4.2 Electrical Connection for Internal System........................... 30
4.3 External Electrical Connection.................................................35
4.4 Battery parallel installation....................................................... 42
4.5 Fuse replacement......................................................................... 42
4.6 Install the protective cover........................................................44
5. Commissioning..........................................................................................45
5.1 Double Check................................................................................. 45
5.2 Electrify for the First Time（Important）............................. 45

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
II
5.3 Battery Parameter Settings....................................................... 45
5.4 Software Update........................................................................... 47
5.5 Battery Powered Off.....................................................................48
6. Trouble shooting and maintenance.................................................. 49
6.1 Troubleshooting............................................................................ 49
6.2 Daily Maintenance........................................................................ 54
6.3 Battery Module Storage Requirements and Power Supply
..................................................................................................................... 54
7. Technical Parameters............................................................................. 56
8. Manufacturer's Warranty and Liability Terms................................ 58

BTS E5~E20-DS5 user manual
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, SOFAR 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
V2.0 2023-09-01

BTS E5~E20-DS5 user manual
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

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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“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 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

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
1
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.
SOFAR 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

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
2
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.

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
3
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 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 SOFAR 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.

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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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 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
Attentio
n
To ensure that the battery is used in the
equipment system authorized by SOFAR, and the
battery is damaged or other losses caused by
illegal use or unauthorized use of the equipment
by SOFAR. SOFAR 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.

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
5
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
documentatio
n
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
There is a high voltage,when the
battery is powered on. After the
battery is powered off, the

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
6
battery
module!
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
documentatio
n
Read all documentation supplied
with the product before install

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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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 5.12kWh ~ 40.96kWh.
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.
Figure.2-1 BTS series application principle diagram

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
8
Table 2-1 Battery module model demonstration
No
Definition
1
BDU
2
BTS 5K
2.2 Product Model Description
Battery module：
Figure 2-2 Battery module model identifiers
Table 2-2 Battery module model demonstration
Identifiers
Meaning
Specification
①
Product series name
SOFAR BTS series battery
module name
②
Battery module energy
grade
5K: Battery module
energy is 5kWh
Battery distribution unit：
Figure 2-3 Battery distribution unit model identifiers
Table 2-3 Battery distribution unit model demonstration
Identifiers
Meaning
Specification
①
Product series name
SOFAR BTS series battery

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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module name
②
Battery module energy
grade
5K: Battery module
energy is 5kWh
③
System Unit
BDU: Battery distribution
unit
Battery system：
Figure 2-4 Battery system model identifiers
Table 2-4 Battery system model demonstration
Identifiers
Meaning
Specification
①
Product series
name
SOFAR BTS series battery
module name
②
Energy grade
E5: Battery total energy is
5.12kWh
E10: Battery total energy is
10.24kWh
E15: Battery total energy is
15.36kWh
E20: Battery total energy is
20.48kWh
③
Battery module
mode
DS5：Battery module is BTS 5K

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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2.3 Product Appearance
Figure 2-5 System appearance diagram
Table 2-5 System appearance definition
No
Definition
No
Definition
1
Indicator light
5
Base
2
DC switch
6
Black startup switch
3
Battery distribution
unit
7
Heat sink
4
Battery module
Battery distribution unit：
Front surface
Back surface
Left surface
Right surface
Front surface

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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Figure.2-6 Schematic diagram of battery power distribution unit ports
Table 2-6 Interface definition of battery power distribution unit
No
Definition
No
Definition
1
Battery distribution
unit
7
DC switch
2
Black startup switch
8
BDU communication
output（COM-OUT）
3
Battery input（BAT IN）
9
Grounding hole
4
BDU cascading
communication
port(Link)
10
Battery output
（BAT Out）
5
BDU communication
input（COM-IN）
11
Grounding hole
6
Grounding hole
Battery module port：
Figure.2-7 Battery module port diagram
Table 2-7 Battery module interface definition
No
Definition
No
Definition
1
Battery module
5
Grounding hole
2
Left side handle
6
Communication output
（Link Port Out）
Front surface
Left surface
Right surface
Front surface

BTS E5~E20-DS5 user manual
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3
Output terminal B+
7
Communication input
（Link Port In）
4
Output terminal B-
8
Right side handle
2.4 Indicator lights description
Figure.2-8 Indicator diagram
Normal status indicator light：
Table 2-8. Normal status indicator light definition
Status
light
Alarm
light
SOC light
L1
L2
L3
L4
L5
Shutdown
Off
Off
Off
Off
Off
Off
Off
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：

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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Table 2-9 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 2-10 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
96%~100%
ON
ON
ON
ON
ON
Alarm status indicator：
Table 2-11 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

BTS E5~E20-DS5 user manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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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
Other
Off
Flashing
ON
ON
ON
ON
ON
Fault status indicator light：
Table 2-12 Fault status indicator light
Alarm status
Statu
s
light
Alar
m
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