Sungrow SG80KTL User manual

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SG80KTL Quick Installation Guide
This guide provides a general instruction of the installation procedures of SG80KTL.
In no case shall this guide substitute for the user manual or related notes on the
device.
Make sure to read over, fully understand and strictly follow the detailed
instructions of the user manual and other related regulations before installing
the equipment.
Any violation could result in personal death or injury or device damage.
1 Unpacking and Inspection
Step 1 R
emove the backplate and
fasteners from the packaging.
Step 2 Inspect the inverter for visible
damages and check the
completeness of the delivery
contents
according to the
inner packing list.
1110mm
800mm
391mm
Contact your supplier if any of the contents is missing. SG80KTL is
unavailable if any damage is detected.

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ABC
FG DE
×18
Fig. 1-1 Scope of delivery
Item
Name
Description
A
Inverter
---
B
Backplate
Used to fix the inverter to the installation site.
C Documents
Quality certificate, packing list, test report, CD and quick
user manual
D
Fasten set
Six units to fasten backplate to metal frame.
E Fix screw
Two M4×16 screws to fix the inverter with the
backplate.
F
DC connector
Eighteen pairs MC4 terminals for PV connection.
G AC cable gland
When the external diameter of the AC cable you
selected matches it, replace the original AC cable gland
on the bottom of the device before wiring.

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2 Mounting Inverter onto the metal
frame
Select the installation location and regulate the clearances of multiple inverters,
referring to the user manual.
Move the inverter to the installation site with the help of another person or the
lifting device by means of the handles.
Install the inverter onto metal frame as following procedures.
Step 1 Remove the backplate and fasteners from the packaging.
Step 2 Place the backplate to the chosen metal frame and adjust it to proper
position and height.
Step 3 Mark the position for holes drilling according to the holes position of the
backplate.
Step 4 Drill holes according to the marks make before. If the shape of the metal
frame does not match the backplate, re-drill holes on the backplate
according to the metal frame chooden.

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Step 5 Secure the backplate to the metal frame firmly by the supplied fastener.
Torque of the fasten nut is 35 Nm.
Step 6 Lift the inverter above the backplate and then slide down to make sure they
match perfectly.
Step 7 After putting the inverter on the backplate, secure the inverter to the
backplate with two M4×16 screws (fix screw hole has its own nut).
No.
Name
Description
A
Hexagon nut
M10
B
Spring
washer
-
C
Flat washer
-
D
Screw bolt
M10*45
E
Metal frame
-
F
Backplate
-

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3 Electrical Connection
Death hazards due to high voltage existing inside the inverter!
Make sure that all the DC and AC cables to the inverter are not live before you
start the electrical work.
Do not turn on the AC side or DC side circuit breaker until all inverter electrical
connections have completed.
3-1 Open the Connection Cabinet
Loose the six screws on the front cover of the connection cabinet and remove the
front cover to see the internal layout of the connection cabinet.
Configuration
circuit board
DC switch
DC SPD Cooling fan AC crimping
terminal
Front view
AC cable gland
DC switch
Waterproof
air valve
Communication
cable glands
DC input plug-in
terminal
Bottom view DI/DO cable
gland
AC cable gland for
connecting Tracker
control cabinet

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3-2 Cables Selection
AC Cable
A
BPE
L1
L2
L3
CD
No.
Description
Remark
A
Protective layer
External diameter of the cable: 30.5-50 mm
B
Length of insulation to be
stripped off
24 mm
C
Insulation layer
-
D Cross section of AC cables
Range: 30-150mm2; recommended value: 70
mm
2
* The external diameter of the AC cable described in A is proper range.
If you select AC cable with the external diameter within the range of 30.5-40
mm, please select the smaller AC cable gland.
If you select AC cable with the external diameter within the range of
40-50mm, please select the larger AC cable gland.
The following table gives the recommended max. length of the AC cables based
on the cross-section of the AC cables.
Cross-section of the AC cable (mm2)
Max. length of the AC cables (m)
35
0-50
50
50-100
70
>100
DC Cables
Cross-sectional
area
Cable
External
diameter
Max.
withstand
voltage
Max. input current for
each PV string
4~6mm2
12AWG~10AWG
6~9mm 1100V 12A
Second PE Cable
The cross-sectional area of the second PE cable shall be exactly the same with
that of the PE cable of the AC cable.
RS485 communication cables

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Shielded twisted pair cables or Shielded twisted pair Ethernet cables.

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3-3 AC Connection
High voltage inside the inverter!
Ensure all cables are voltage-free before electrical connection.
Do not connect the AC circuit breaker until all inverter electrical connections
are completed.
Step 1 Disconnect the AC circuit breaker and ensure it will not reconnect
accidentally.
Step 2 Unscrew the 6 bolts on the front cover of the
lower junction box.
Step 3 Peal the cables as shown below.
For flexible cables (stranded wires), use cold pressing terminal lugs.
The cross-section of the AC cable must be selected carefully in order to prevent
accidentally disconnections of the inverter from the grid due to high impedance of
the cable.
A
BPE
L1
L2
L3
CD
Step 4 Select the adaptive wire diameter of AC cable gland according to actual AC
cable diameter. Remove or install the two AC cable glands on the bottom of
the device by torque of recommended value.
Remove or install the smaller AC cable gland by torque of 12…13 Nm.
Remove or install the larger AC cable gland by torque of 16…17 Nm.
Peel the plastic film on one end of the AC cable protection with proper
tools before AC cable connection. Only the AC cable protection itself
needs to be replaced; other accessories (packing nuts) can still be used.
Step 5 Fix the AC cable to the corresponding terminals with torque shown in the

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follow two tables.
Cable section(mm2)
Screw tightening torque(Nm)
Min
Max
26.7~42.3
9.8
13.6
53.5~67.4
11.9
16.3
70~107
15.8
22.6
127~177
19.8
29.4
The table values are used for the following cable type:
1. Copper stranded(including sector);
2. aluminum solid(including sector);
Cable section(mm2)
Screw tightening torque(Nm)
Min
Max
26.7~42.3
7.9
10.8
53.5~67.4
9.5
13.0
70~107
12.7
18.1
127~177
15.8
23.5
The table values are to used for the following cable type:
1. aluminum stranded;
Step 6 Pull the cable gently to make sure it is secured.
L1 L2 L3 PE
* Pictures here are indicatively only. Product in kind prevail.

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If the cross-
section of the AC cable is sectorial, please place the apex(A) of
sector upside and then fix the AC cable to the corresponding terminals..
90°
A(apex)
Observe the AC terminal layout. Device will not work normally if the phase
cable is connected to the PE terminal.
Do not squeeze or press the cable insulation layer. Improper connection
may affect the normal operation of the inverter.
Step 7 Seal the gaps between the AC cable and the gland inside the lower part of
the cabinet by fireproofing mud.
3-4 DC Connection
Step 1 Strip off 7mm insulation layer from
all DC cables.
7mm
Step 2 Assemble cable ends with crimp
contacts by crimping pliers.
Positive Crimp Contact
Negative Crimp Contact