Sunways STS-4.2KTL Quick Installation Manual

０ １ Packing List
Inverter×1 Wall Bracket×1 Expansion Bolt×4 3Pin Terminal×1
Monitoring
AC Terminal×1 Ground Terminal×1 6Pin
Device × 1 (Optional)
Figure 1 Packing list
Export limit & control version 2pcs; RS485 and DRED version 1pcs (This
①
connector is already pre-installed inside the inverter).
Note
② DRED version only (This connector is already pre-installed inside the inverter).
Installation Spacing
０ ２
500mm
300mm 300mm
500mm
Figure 2 Installation spacing(Single Inverter） Figure 3 Front view
Bracket Dimensions
０ ３
Use the wall bracket as the template to mark the position of 4 holes on the wall.
220mm 16mm
110mm 110mm
10mm
Figure 4 Dimensions of wall bracket Figure 5 Mark the holes on the wall
Mounting the Inverter
０ ４
Insert the expansion tubes into the holes and tighten them, then fix the bracket
onto the wall with expansion screws by using a cross screwdriver. Lift up the
inverter with both hands, hang the back rail on the fixed wall bracket carefully.
Figure 6 Fix the wall bracket Figure 7 Mounting the inverter
DC Connector Assembly Procedure
０ ５
Use a 2.5-4mm² PV cable, strip off the cable sheath for 7mm, insert the stripped
head into the metal terminal and use a crimping plier to press it tight, insert the
metal terminal into the corresponding PV connector and tighten the nut.
① 2.5-4.0mm²
PV Terminal×2
Figure 8 Strip off the cable sheath
Quick
Guide
User
Manual
Inspection
Report
User Manual×1
Quick Guide×1
②
Terminal×1
Inspection Report×1
Figure 10 Tighten the DC connector
DC Connector Connection
０ ６
410mm
Figure 11 DC connector connection
Insert the positive and negative
Logo
connectors into the inverter PV
connectors respectively.
Note:1. Disconnect the AC breaker on the grid
side when connecting the PV connectors.
Display 2. The DC switch must be switched to "OFF"
position.
AC Connector Assembly
０ ８
Strip off the AC cable sheath for 50mm,
and strip off the end of L/N/PE each
cable for 8mm.
Wire Diameter： 10-14mm
Figure 13 Recommended AC cable info
AC Connector Connection
０ ９
An AC breaker must be connected on the AC side of the inverter. The
recommended AC cable and breaker for Sunways STS 3-6kW series
single-phase inverters are shown in the following table:
Connect the AC connector to the inverter AC terminal, and the slight "click"
represents the connection is in place.
Model
STS-3KTL
STS-3.6KTL
STS-4.2KTL
STS-4.6KTL
STS-5KTL
STS-6KTL
Note: Check the local standards for more details.
Grid Connection Steps
１ ０
1. Check whether all connectors are correctly connected.
2. Switch the AC breaker on.
3. Turn the DC Switch to "ON" position.
4. The inverter starts self-checking and the screen displays "checking" .
5. After self-checking is completed, the inverter will start to generate power.
The power indicator will be light up and the real-time power will be
displayed on the screen.
Length:7mm
Figure 9 Press the metal terminal
Ground Terminal Connection
０ ７
Figure 12 Ground terminal connection
Note:Inverter must be well-grounded for resisting
surge voltage shock and improving EMI
performance.
Insert the stripped end of L/N/PE cable
into the AC terminal head. Tighten the
screws in the terminal with an Allen-key
to ensure a reliable connection.
8mm
Allen-key
50mm
Cable cross-setional area:2.5-4.0mm²
Figure 14 AC connector assembly
Copper wire Breaker
4mm² 20A
4mm² 25A
4mm² 32A
4mm² 32A
6mm² 40A
6mm² 40A Figure 15 AC connector connection
+
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QUICK INSTALLATION GUIDE
STS 3~6kW Series
Grid-connected PV Inverter
Single Phase Dual MPPT
Sunways Technologies Co.,Ltd.
S11-00033-00