Sungrow SG1K5TL User manual

About This Manual
Thank you for purchasing inverter SG1K5TL from Sungrow.We hope that the device
will meet your satisfaction when you use it with your PV plant system.
Aim
The purpose of this manual is to provide detailed product information and instructions
for use of SG1K5TL PV grid-connected inverter.
Target Readers
The manual is provided to people who need to install and operate the grid-connected
inverter.
How to Use This Manual
Read this manual and other document before installation and operation with inverter.
The document must be stored with other documents and must be available at all
times.
The contents of this manual will be periodically updated or revised if necessary.
However discrepancies cannot be excluded. Please make the object as the standard
or download the latest version of this manual via www.sungrowpower.com.

Symbols Explanation
Important instructions contained in this manual should be followed during installation,
operation and maintenance of the inverter. And they will be highlighted by these
symbols.
DANGER indicates a hazard with a high level of risk which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazard with a medium level of risk which, if not avoided,
could result in death or serious injury.
CAUTION indicates a hazard with a low level of risk which, if not avoided, could
result in minor or moderate injury.
NOTICE indicates a situation which, if not avoided, could result in equipment or
property damage.
NOTE indicates additional information, emphasized contents or tips to help you solve
problems or save time.

I
Contents
SAFETYANDPRODUCTINFORMATION ................................................................1
1 Safety Instructions .................................................................................................3
2 Product Introduction..............................................................................................7
2.1 Intended Usage ................................................................................................................................ 8
2.2 Circuit Description............................................................................................................................. 9
2.3 Product Description ........................................................................................................................ 10
2.3.1 Product Appearance............................................................................................................... 10
2.3.2 Dimensions and Weight of Inverter.........................................................................................11
2.3.3 LCD Display Panel................................................................................................................. 12
INSTALLATIONANDMAINTENANCEINFORMATION .......................................13
3 Installation Flow...................................................................................................15
4 Installing Inverter onto Wall..............................................................................17
4.1 Unpacking and Inspection .............................................................................................................. 18
4.2 Nameplate ...................................................................................................................................... 18
4.3 Moving Inverter............................................................................................................................... 19
4.4 Requirements of Installation Site.................................................................................................... 19
4.5 Installation Procedure..................................................................................................................... 21
5 Electrical Connection...........................................................................................23
5.1 General Safety Instruction.............................................................................................................. 24
5.2 Terminals Description ..................................................................................................................... 25
5.3 Overview of Electrical Connection.................................................................................................. 26
5.4 Specifications of Cables.................................................................................................................. 27
5.5 Connecting Inverter to PV Arrays ................................................................................................... 28
5.5.1 Safety ..................................................................................................................................... 28
5.5.2 Assembling DC Cable to Connector....................................................................................... 29
5.5.3 DC Wiring Procedure ............................................................................................................. 31
5.6 Connecting Inverter toAC Grid....................................................................................................... 32
5.6.1 Safety ..................................................................................................................................... 32

II
5.6.2 Assembling AC Cables to Connector ..................................................................................... 33
5.6.3 AC Wiring Procedure.............................................................................................................. 34
5.7 Grounding of Inverter...................................................................................................................... 35
5.8 Connecting Communication Cable.................................................................................................36
5.8.1 Monitoring System.................................................................................................................. 36
5.8.2 Connecting RS485 Cable....................................................................................................... 37
6 Commissioning.....................................................................................................39
6.1 Verify before Commissioning.......................................................................................................... 40
6.2 Commissioning Procedure.............................................................................................................. 40
7 Troubleshooting ...................................................................................................41
7.1 Troubleshooting of LED Indicator................................................................................................... 42
7.2 Troubleshooting of Faults in LCD Screen....................................................................................... 43
OPERATIONINFORMATION...................................................................................45
8 Operation of LCD Menu.....................................................................................47
8.1 Button Function............................................................................................................................... 48
8.2 Operation Mode of Inverter............................................................................................................. 49
8.3 Overview of LCD Menu................................................................................................................... 50
8.4 Start-up Menu ................................................................................................................................. 51
8.5 Default Menu .................................................................................................................................. 51
8.6 Main Control Menu ......................................................................................................................... 52
8.7 Check Run-inform........................................................................................................................... 52
8.8 Check Fault-record......................................................................................................................... 54
8.9 Start and Stop Inverter.................................................................................................................... 55
8.10 Set Parameters for Inverter........................................................................................................... 56
8.10.1 Set Language....................................................................................................................... 56
8.10.2 Adjust Time Displayed in Inverter......................................................................................... 56
8.10.3 Firmware............................................................................................................................... 57
8.10.4 Set Power-adj....................................................................................................................... 57
8.10.5 Load Default......................................................................................................................... 57
8.10.6 Set Run Parameter............................................................................................................... 58
8.10.7 Set Protective Parameters ................................................................................................... 58
8.10.8 Set Communication Parameters .......................................................................................... 59
APPENDIX................................................................................................................61
Technical Data...................................................................................................................................... 61
Exclusion of Liability............................................................................................................................. 63
About Us............................................................................................................................................... 64

1
SAFETYANDPRODUCTINFORMATION
For Installer and User

2

3
1 Safety Instructions
About This Chapter
This chapter provides crucial safety instructions about SG1K5TL. Please read this
chapter carefully before any work with the inverter.

SG1K5TL User Manual
4
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
SG1K5TL inverter is designed and tested according to international safety
requirements. But as all electrical and electronic equipments, certain precautions
should be observed during installing, operating and maintaining.
Incorrect operation or work performed incorrectly can result in damage to:
zThe life and well-being of the operator or the third party
zThe inverter and other properties that belong to the operator or the third party
Before Installation
The first thing after receiving unit is to check for any visible damage to the
package or to the inverter. If there is something you suspect, contact the
shipping company and Sungrow before installing.
When choosing the installation site, ensure that there is no electromagnetic
interference with other electrical and electronic equipments.
During Installation
Lethal voltage exists! Do cover the PV arrays with lighttight materials or make
sure that DC circuit breaker is disconnected. Exposed to sunlight, PV arrays
will output lethal voltage.
All tasks of installation must only be performed by qualified personnel.
zThey are trained specially.
zThey have read this manual and comprehended all operation regulations
and related safety instructions.

Safety Instructions 1
5
Only after receiving prior approval from the utility company and qualified
personnel installing the inverter, you can connect the inverter to the utility grid.
All electrical connections must be in accordance with local and national
electrical codes.
All cables must be firmly attached, undamaged, properly insulated and
adequately dimensioned.
Maintenance and Modification
Any malfunction that can impair inverter safety must be repaired immediately
before the inverter restart again. Please contact your local authorized personnel
if any maintenance is required.
Risk of damage to the inverter due to improper modification.
Never modify the inverter or other components of the inverter. Otherwise it will
lead to loss of any and all warranty rights.
zFirst disconnect the inverter from utility grid before any maintenance work
and then DC side.
zEven when the inverter is disconnected, lethal voltages still exists within
the inverter.
zBefore any maintenance work, you should wait for at least fifteen minutes
and then perform work.

SG1K5TL User Manual
6
Electrostatic discharge can damage the inverter.
During replacing or installing the inner components, the technical personnel
should take appropriate protective measures such as electrostatic bracelet.
Others
All safety instructions, warning labels and nameplate on the inverter body:
zMust be clearly visible
zMust not be removed, covered and pasted
These regulations should also be followed:
zThe regulations related to the electricity fed into grid
zThe safety instructions related to the PV arrays

7
2 Product Introduction
About This Chapter
This chapter provides basic information about inverter SG1K5TL.

SG1K5TL User Manual
8
2.1 Intended Usage
SG1K5TL serial inverters are robust, grid-connected, transformer-less and of high
conversion efficiency.
SG1K5TL inverter transforms the direct current generated by PV arrays into stable
alternating current and outputs the AC power into the utility grid. This inverter is a
crucial unit in the small-scaled PV power system.
If PV arrays need earthing of the positive or negative terminal, they cannot collaborate
with SG1K5TL inverter.
An example about intended usage of the inverter is shown in Fig 2-1.
Fig 2-1 Inverter Applied in the PV Power System
Item Description
A PV arrays
B Inverter
C Metering device
D Utility grid
Any other or additional use is not permitted except the intended use.
The inverter must only be connected to public utility grid. If output of inverter is
connected to local loads (household appliance, lights, motor loads, etc.), the
inverter can not start.

Product Introduction 2
9
2.2 Circuit Description
Fig 2-2 shows the main circuit of SG1K5TL-a transformer-less and grid-connected
inverter.
Boost circuit raises input DC voltage. And there is a MPP tracker to ensure that
maximum power from PV arrays can be utilized. Then a full bridge inverter circuit
converts DC power to AC power. Meanwhile inverter is equipped with protective circuit
to guarantee itself safely operation that can trigger AC relay if required.
However, the difference between two inverters is the number of DC input. Detailed
information will be introduced in the following contents.
Additionally, inverter provides standard interface RS485 for communication. User can
look up running date and set parameters through human-computer interaction
interface –LCD display panel.
Fig 2-2 Main Circuit Diagram of SG1K5TL

SG1K5TL User Manual
10
2.3 Product Description
2.3.1 Product Appearance
Fig 2-3 Product Description
Item Name Description
1 LCD display panel
A friendly human-computer interaction interface. Running data and
configuration parameters are displayed in the LCD screen.
2 Waist-shape holes
The four waist-shape holes are used for mounting the inverter
against the wall.
3 DC terminal Interface between inverter and PV arrays.
SG1K5TL: 2 pair
4 Heat sink Cool down the temperature due to heat inside the inverter.
5 AC terminal Standard communication interface.
6 RS485 terminal Inverter feeds power via this terminal.

Product Introduction 2
11
2.3.2 Dimensions and Weight of Inverter
Fig 2-4 Dimensions of Inverter
Table 2-1 Dimensions Value
Type W(mm) H(mm) D(mm) Net weight(kg)
SG1K5TL 288 438 126 10.54

SG1K5TL User Manual
12
2.3.3 LCD Display Panel
LCD display panel comprises LED indicators, buttons and LCD screen. Leds indicate
the current state of the inverter. The current running information and history
information can be shown in the LCD screen via operating the buttons.
LCD display panel provides a friendly human-computer interaction interface.
Fig 2-5 LCD Display Panel
Item Name Description
A LED
indicators They are “RUN” and “FAULT”. User can observe two indicators to get the current state of inverter. Detailed definition is shown in Table 2-2.
B Buttons
User can operate the LCD menu of the inverter via the two buttons.
Detailed function is shown in Table 8-1.
C LCD
screen LCD screen can display the current state of inverter, current running information, history information and parameters to be set.
Table 2-2 Description of LED Indicators
Name State Description
On Inverter is running.“RUN”
Off Inverter is not running.
On A malfunction occurs.“FAULT”
Off A malfunction doesn’t occur.

13
INSTALLATIONANDMAINTENANCEINFORMATION
Only for Installer

14

15
3 Installation Flow
About This Chapter
This chapter demonstrates installation flow from unpacking to successful
commissioning.