Sofar solar SOFAR 60KTLX-G3 User manual

Shenzhen SOFARSOLAR Co., Ltd.
Solar Grid-tied Inverter
Product Model: SOFAR 60K~80KTLX-G3
User manual

SOFAR 60-80KTLX-G3 User Manual
All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.
I
Preface ....................................................................................................................... III
1. Basic Safety Information ..........................................................................................................................1
1.1. Requirement for Installation and Maintenance ..........................................................1
1.2. Symbols and signs ..................................................................................................... 5
2. Product Characteristics .............................................................................................................................7
2.1. Intended Use .............................................................................................................. 7
2.2. Function Description ............................................................................................... 10
2.3. Electrical block diagram .......................................................................................... 11
2.4. Efficiency and derating curve ..................................................................................12
3. Inverter Storage ...................................................................................................................................... 13
4. Installation ..............................................................................................................................................14
4.1. Installation Process .................................................................................................. 14
4.2. Checking Before Installation ................................................................................... 14
4.3. Tools .........................................................................................................................16
4.4. Determining the Installation Position ...................................................................... 19
4.5. Moving of inverter ...................................................................................................21
4.6. Installation ............................................................................................................... 22
5. Electrical Connection ............................................................................................................................. 24
5.1. Electrical Connection ...............................................................................................25
5.2. Grounding Connection (PE) .................................................................................... 25
5.3. Connect grid side of inverter(AC-Output) ...............................................................27
5.4. Connect PV side of inverter（DC-Input）............................................................. 31
5.5. Communication Connection .................................................................................... 34
6. Commissioning of inverter .....................................................................................................................38

SOFAR 60-80KTLX-G3 User Manual
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II
6.1. Cable Connection Inspection ...................................................................................38
6.2. Start Inverter ............................................................................................................ 38
7. Operation interface ................................................................................................................................. 40
7.1. Operation and Display Panel ................................................................................... 40
7.2. Standard Interface ....................................................................................................41
7.3. Main Interface ..........................................................................................................45
7.4. Updating Inverter Software ..................................................................................... 48
8. Trouble shooting and maintenance.........................................................................................................54
8.1. Troubleshooting ....................................................................................................... 51
8.2. Daily Maintenance ...................................................................................................61
8.3. Fan Maintenance ......................................................................................................61
9. Technical Data........................................................................................................................................ 63
9.1. Technical Data List .................................................................................................. 63
10. Quality Assurance .................................................................................................................................66

SOFAR 60-80KTLX-G3 User Manual
All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.
III
Preface
Notice
The products, services or features you purchased shall be subject to the company's
commercial contracts and terms. All or part of the products and services described
in this document may not within the scope of your purchase. Unless additional
terms and conditions in your contract, the company does not make any statement or
guarantee on 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 2022-6-15
●Initial version
Shenzhen SOFARSOLAR Co., Ltd.
Location:11/F., Gaoxinqi Technology Building, No.67 Area, Xingdong Commu
nity, Xin’an Sub-district, Bao’an District, Shenzhen City,China
Postcode: 518000
Company Website: www.sofarsolar.com
Email: [e-mail]

SOFAR 60-80KTLX-G3 User Manual
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IV
Outline
This manual is an integral part of SOFAR 60KTLX to 80KTLX-G3. It describes the
assembly, installation, commissioning ,maintenance and failure of the product.
Please read it carefully before operating.
Scope of Validity
This manual contains important instructions for:
SOFAR 60KTLX-G3 SOFAR 80KTLX-G3
SOFAR 70KTLX-G3 *
*Only some certifications include SOFAR 70KTLX-G3.
Target Group
This manual is for qualified electricians. The tasks described in this manual only
can be performed by qualified electricians.
Symbols Used
The following types of safety instruction and general information appear in this
document as described 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 property
damage.
Attention

SOFAR 60-80KTLX-G3 User Manual
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“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

SOFAR 60-80KTLX-G3 User manual
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1.Basic Safety Information
Outlines of this Chapter
Please read the instruction carefully. Faulty operation may cause serious injury
or death .
Safety Instruction
Introduce the safety instruction during installation and operation of SOFAR
60~80KTLX-G3.
Symbols Instruction
This section gives an explanation of all the symbols shown on the SOFAR
60~80KTLX-G3 on-grid inverter and on the type label.
1.1. Requirement for Installation and Maintenance
Installation of SOFAR 60~80KTLX-G3 on-grid inverter must conform with laws,
regulations, codes and standards applicable in the jurisdiction.
Before installing and adjusting the produce, please read all of instructions, cautions
and warnings in this manual
Before connecting the product to the electrical utility grid, contact the local utility
company for allowance. Also, this connection must be made only by qualified
electrician.
If the failure persists, please contact the nearest authorized maintenance center. If
you don't know which service center is closest to you, please contact your local
distributor. Don't repair the product by yourself, which may lead serious injury or
damage.
If you have any question or problem when you read the
following information, please contact Shenzhen
SOFARSOLAR CO., Ltd.
Note

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Qualified Person
When inverter is working, it contains lethal voltages and went hot in some area.
Improper installation or misoperation could cause serial damage and injury. To
reduce the risk of personal injury and to ensure the safe installation and operation of
the product, only a qualified electrician is allowed to execute transportation,
installation, commissioning and maintenance. Shenzhen SOFARSOLAR Co, Ltd.
does not take any responsibility for the property destruction and personal injury
because of any incorrect use.
Label and Symbols
SOFAR 60~80KTLX-G3 has type label attach the side of product which contact
important information and technical data, the type label must permanent attached to
the product.
SOFAR 60~80KTLX-G3 has warming symbol attache the product which contact
information of safety operation. The warming symbol must permanent attached to
the product.
Installation location requirement
Please install the SOFAR 60~80KTLX-G3 on-grid inverter according to the
following section. Place inverter in an appropriate bearing capacity objects (such as
solid brick wall, or strength equivalent mounting surface, etc.) and make sure
inverter vertical placed. A proper installation location must have enough space for
fire engine access in order for maintenance if faulty occur. Ensure the inverter is
installed in a wall ventilated environment and have enough air cooling cycle. Air
humidity should less than 90%.

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Transportation Requirement
Inverter is in the good electrical and physical condition when it ship out from
factory. During transport, inverter must be placed in its original package or other
proper package. Transportation company should responsible for any damage during
transport period.
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.
Electrical Connection
Please comply with all the current electrical regulations about accident prevention
in dealing with the current inverter.
Before the electrical connection, use opaque material to cover the PV
modules or disconnect PV string DC switch. PV arrays will produce
dangerous voltage if it is exposure under sun.
Danger
All operation must accomplish by certified electrical engineer
Must be trained;
Completely read the manual operation and understand all
information.
Warming
Must get permission by local utility company before connecting to
grid and the connection must be done by certified electrical
engineers.
Attention

SOFAR 60-80KTLX-G3 User manual
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Operation
Touching the utility grid or the terminal conductors can lead to lethal
electric shock or fire!
Do not touch non-insulated cable ends, DC conductors and any live
components of the inverter.
Attention to any electrical relevant instruction and document.
Danger
Enclosure or internal components may get hot during operation. Do
not touch hot surface or wear insulated gloves.
Keep it away from kids!
Attention
Maintenance and repair
Before any repair work, turn OFF the AC circuit breaker between the
inverter and electrical grid first, then turn OFF the DC switch.
After turning OFF the AC circuit breaker and DC switch wait for at
least 5 minutes before carry any maintenance or repair work.
Danger
Inverter should not work again until removing all faults. If any repair
work is required, please contact local authorized service centre.
Should not open the inverter cover without authorized permit,
SOFARSOALR does not take any responsibility for that.
Attention
EMC/Noise Level
Electromagnetic compatibility (EMC) refers to that on electrical equipment
functions in a given electromagnetic environment without any trouble or error, and
impose no unacceptable effect upon the environment. Therefore, EMC represents
the quality characters of an electrical equipment.
The inherent noise-immune character: immunity to internal electrical noise
External noise immunity: immunity to electromagnetic noise of external
system
Noise emission level: influence of electromagnetic emission upon environment
Electromagnetic radiation from inverter may be harmful to health!
Please do not continue to stay away from the inverter in less than
20cm when inverter is working
Danger

SOFAR 60-80KTLX-G3 User manual
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1.2. Symbols and signs
High voltage of inverter 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 inverter while it is
working
Caution
PV array should be grounded in accordance to the requirements of
the local electrical grid company
Attention
Ensure the maximum DC voltage input is less than the maximum
inverter DC voltage (including in low temperature condition). Any
damage cause by over-voltage, SOFARSOLAR will not take the
responsibility including warranty
Warning
Signs on the Product and on the Type Label
SOFAR 60~80KTLX-G3 has some safety symbols on the inverter. Please read and
fully understand the content of the symbols before installation.
Symbols
Name
Explanation
This is a residual voltage in
the inverter!
After disconnect with the DC side,
there is a residual voltage in the
inverter, operator should wait for 5
minutes to ensure the capacitor is
completely discharged.
Caution of high voltage and
electric shock
The products 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 product can get hot during
operation. Avoid contact during
operation. Prior to performing any
work on the product, allow the product

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to cool down sufficiently
Comply with the Conformite
Euroeenne (CE)
Certification
The product comply with the CE
Certification
Grounding Terminal
This symbol indicates the position for
the connections of an additional
equipment grounding conductor
Observe the documentation
Read all documentation supplied with
the product before install
Positive pole and negative
pole
Positive pole and negative pole of the
input voltage (DC)
Temperature
Indicated the temperature allowance
range

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2.Product Characteristics
Outlines of this Chapter
Product Dimensions
Introduce the field of use and the dimensions of the SOFAR 60~80KTLX-G3
on-grid inverter.
Function Description
Introduce working principle and internal components of the SOFAR
60~80KTLX-G3 on-grid inverter.
Efficiency Curves
Introduce the efficiency curves of the Inverter.
2.1. Intended Use
The SOFAR 60~80KTLX-G3 on-grid inverter can transform a direct electric current
(DC) coming from a photovoltaic generator (PV) into an alternating electric current
(AC) Suitable for being fed into the utility grid.
Figures 2-1PV Grid-Tied System
The SOFAR 60~80KTLX-G3 on-grid inverter may only be operated with PV arrays
(photovoltaic module and cabling) for on grid condition. Do not use this product for
any other or additional purposes. Any damage or property loss due to any use of the
product other than described in this section, SOFARSOLAR will not take the

SOFAR 60-80KTLX-G3 User manual
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8
responsibility. DC input of the product must be PV module, other source such like
DC sources, batteries will against the warranty condition and SOFARSOLAR will
not take the responsibility.
Supported grid types
According to the SOFAR 60~80KTLX-G3 configurations, for the TT type of
electricity grid ，the voltage between neutral and earth should be less than 30V.
Inverters are compatible with TN-S, TN-C, TN-C-S, TT, IT grid.
Figure2-2 Overview of the grid types
Product Dimensions
The choice of optional parts of inverter should be made by a qualified technician
who knows the installation conditions clearly.
Dimensions Description
SOFAR 60~80KTLX-G3
L×W×H=687*561*275mm

SOFAR 60-80KTLX-G3 User manual
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Figure 2-3 Front, side and back of the machine (80KW)
Figure 2-4 Bottom view of the machine (80KW)
Function description of inverter box bottom
1. DC Switch
5. USB Port (for WIFI or GPRS communication)
2. Breather valve
6. COM Port (for RS485 communication)
3. DC positive poles connectors
7. AC output
4. DC negative poles connectors
8. Fans
Figure 2-5 Bottom view of SOFAR 60~80KTLX-G3

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Labels on the equipment
Note: label must NOT be hidden with objects and extraneous parts (rags, boxes, equipment, etc.,); they
must be cleaned regularly and kept visible at all times.
Figure 2-6 Product label
2.2. Function Description
DC power generated by PV arrays is filtered through Input Board then enter Power
Board. Input Board also offer functions such as insulation impedance detection and
input DC voltage/ current detection. DC power is converted to AC power by Power
Board. AC power is filtered through Output Board then AC power is fed into the
grid. Output Board also offer functions such as grid voltage/ output current
detection, GFCI and output isolation relay. Control Board provides the auxiliary
power, controls the operation state of inverter and shows the operation status by
Display Board. Display Board displays fault code when inverter is abnormal
operation conditions. At the same time, Control Board can trigger the replay to
protect the internal components.
Function Module
A. Energy management unit
Remote control to start/ shunt down inverter through an external control.
B. Feeding reactive power into the grid
The inverter is able to produce reactive power, thus to feed it into the grid through

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the setting of the phase shift factor. Feed-in management can be controlled directly
by the APP, or through a RS485 interface.(Optional)
C. Limited the active power fed into grid
If enable the limited of active power function, inverter can limit the amount of
active power fed into the grid to the desired value (expressed as percentage).
D. Self-power reduction when grid is over frequency
If grid frequency is higher than the limited value, inverter will reduce the output
power to ensure the grid stability.
E. Data transmission
Inverter can be monitored remotely through an USB stick logger(WIFI) or software
Storage Monitor(optional) which is based on RS485 interface.
F. Software update
USB interface for uploading the firmware, remotely uploading is available through
an USB stick logger(WIFI)
2.3. Electrical block diagram
SOFAR 60~80KTLX-G3 has 12 DC input strings, 6 MPPT trackers to tracking the
maximum power point, then converters the direct current of PV array to
grid-compliant, three phase current and feeds in into the utility grid. Both DC and
AC side has Surge Protection Device (SPD).

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Figure 2-7 Main circuit structure
2.4. Efficiency curve
Figure 2-8 Power efficiency curve(take 80KW for example)

SOFAR 60-80KTLX-G3 User manual
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3.Inverter Storage
If inverter is not installing immediately, storage condition need meet below
requirements:
Place inverter into the original package and leave desiccant inside, sealed tight
with taps.
Keep the storage temperature around -40℃～70℃, Relative humidity 5～95%,
no condensation.
Figure 3-1 Storage temperature and humidity
The maximum stacking layer number cannot exceed 2 layers.
If the inverter be storage for more than half year, the inverter needs to be fully
examined and tested by qualified service or technical personnel before using

SOFAR 60-80KTLX-G3 User manual
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4.Installation
Outlines of this Chapter
This topic describes how to install this product, please read carefully before install.
Do NOT install the product on flammable material.
Do NOT store this product in potentially explosive atmospheres.
Dangers
The enclosure and heat sink will get hot during operation, please do
not mount the product at a easy to reach location.
Caution
Consider the weight of this product when doing transport and
moving.
Choose an appropriate mounting position and surface.
At least two persons for installation.
Attention
4.1. Installation Process
4.2. Checking Before Installation
Checking Outer Packing Materials
Before unpacking, please check the condition of the outer package materials if any
damaged found, such as holes, cracks, please not unpack the product, contact your
distributor immediately. Recommend installing the product within 24 hours after
unpacking the package.
Checking Deliverable