Sunways STT-50KTL User manual


Grid-connected Inverter

User Manual
EN

CONTENTS
1 Preface ……………………………………………………… 5
1.1 Overview ………………………………………………………………………… 5
1.2 Target Groups ……………………………………………………………………5
2 Safety Instructions ……………………………………… 6
2.1 Safety Notes ……………………………………………………………………… 6
2.2 Statement ………………………………………………………………………… 6
2.3 Important Safety Matters ……………………………………………………… 7
2.4 Symbols Explanation …………………………………………………………… 8
3 Product Description ……………………………………… 11
3.1 Basic Features ………………………………………………………………… 11
3.2 Physical Layout ……………………………………………………………… 12
3.3 Display Interface ……………………………………………………………… 15
3.4 Packing List …………………………………………………………………… 16
4 Installation ………………………………………………… 18
4.1 Location ……………………………………………………………………… 18
4.2 Mounting ……………………………………………………………………… 20
4.3 External ground connection ……………………………………………… 22
4.4 Electrical Connection ……………………………………………………… 23
4.5 Monitoring Device Installation …………………………………………… 31
4.6 Meter/RS485/DRED Connection …………………………………………… 32
5 Start and Stop ……………………………………………… 37
5.1 Start the Inverter …………………………………………………………… 37
5.2 Stop the Inverter ……………………………………………………………… 37
6 General Operation ………………………………………… 38
6.1 Display Operation …………………………………………………………… 38
6.2 Country Code (Safety Code) Setting ……………………………………… 39
6.3 Auto-Test ……………………………………………………………………… 40
6.4 Power Quality Response Modes …………………………………………… 41
6.5 Online Monitoring APP ……………………………………………………… 41
7 Troubleshooting …………………………………………… 42
7.1 Error Message ………………………………………………………………… 42
7.2 Maintenance ………………………………………………………………… 46
8 Technical Parameters …………………………………… 47

 


Attention









1 Preface
※ 1.1 Overview





※ 1.2 Target Groups
󽗉



1 PrefaceAttention

 


2 Safety Instructions
2 Safety Instructions2 Safety Instructions
※ 2.1 Safety Notes
 

 
󽗉󽗉
 



 
 

 

 

 

※ 2.2 Statement


 
 
 

 

 

 󽗉
󽗉
 󽗉

 
󽗉
 

 
※ 2.3 Important Safety Matters
󽗉
Danger
Dangerous situation, if not avoided, it could result in death or serious personal injury.
Warning
Potentially dangerous situation, if not avoided, may result in death or serious personal
injury.
Caution
Potentially dangerous situation, if not avoided, may result in moderate or minor person-
al injury.

 


※ 2.4 Symbols Explanation


Attention
The safety warning information about equipment or environment, to prevent equipment
damage, data loss, equipment performance degradation or other unpredictable results.
Note
Symbol highlights important information, best practices and tips, etc.


Inverter status indicator.
Inverter running indicator.
Grounding symbol, the inverter casing needs to be properly grounded.
The inverter cannot be disposed of with household waste.
Please read the instructions carefully before installation.
Do not touch any internal parts of the inverter until 5 min after being disconnected from
the mains and PV input.
CE mark, the inverter complies with the requirements of the applicable CE guidelines.
TUV certifi cation.
SAA certifi cation.
Danger. Risk of electric shock!
2 Safety Instructions2 Safety Instructions

 


The surface is hot during operation and no touch is allowed.
Electric shock hazard, live parts, risk of electric shock, do not touch.





3 Product Description2 Safety Instructions
3 Product Description
※ 3.1 Basic Features


󽗋







Figure 3-1 Applicable grid types





















 


3 Product Description

 
  

 

※ 3.2 Physical Layout
Figure 3-2 Front view


Figure 3-3 Side view
580mm
850mm
LOGO Display
3 Product Description
580mm
297mm
Name
Plate
Figure 3-4 Bottom view


DC Input Terminal Com2 Port
Com1 Port
AC Output Terminal



 



Item Terminal Note
1 DC Input terminal PV connector
2 COM 1 Port WiFi/LAN/GPRS/4G device connector
3 COM 2 Port RS485/DRED connector
4 AC Output Terminal Used for AC output cable connection
Figure 3-5 Inverter back view

※ 3.3 Display Interface
Item Indicator Status Description
1Power
Indicator
O ff No input voltage detected or input voltage is too low.
Slow fl ashing Inverter powered on, waiting for the grid connection.
Quick fl ashing Inverter detected grid power and entered self-test status.
On Normal, grid-connected and power generated.
2Alarm
Indicator
On An alarm or faults detected, specific fault information can be
viewed from the display.
O ff The inverter is running normally.
Slow fl ashing The monitoring device is not connected to the router or is not
connected to internet.
Quick fl ashing The monitoring device is connected to the router or connected to
internet but not connected to the server.
sunways
Figure 3-6 Display interface




3 Product Description 3 Product Description

 


※ 3.4 Packing List



Item Indicator Status Description
3OLED
Display
On Display the inverter operating information.
O ff If the button pressed without any response, the screen is faulty or
not well connected.
4 Button Physical button Switch OLED display information and set parameters by short
press and long press.
   
   
Note
① This connector already re-installed inside the inverter.
   
 
Figure 3-7 Packing list







3 Product Description 3 Product Description

 


Figure 4-1 Recommended installation location
4 Installation
※ 4.1 Location



 

 
 


 

 
 
  




Warning
Do not put fl ammable and explosive articles around the inverter.
Figure 4-3 Recommended installation angle

Figure 4-2 Recommended installation spacing



4 Installation 4 Installation
1200mm 800mm
800mm
500mm 500mm
500mm 500mm
󾗒 