Sungrow SG36KRL-M User manual

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SG36KTL-M Quick Installation Guide
This guide provides a general instruction of the installation procedures of
SG36KTL-M.
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 Remove 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.
Contact your supplier if any of the contents is missing. SG36KT
L
-M is
unavailable if any damage is detected.

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*Images shown here is for reference only! Actual product you receive may differ.
Item Name Description
A Inverter unit ---
B Backplate It is used for mounting inverter onto the wall.
C Documents
Documents include quality certificate, packing list, product
test report, and quick user manual.
D Fastener set Six units. It is used for fastening backplate onto metal frame.
E Fix screws
2 M4×16 screws for fix the inverter to the backplate.
F DC
connectors
Eight pairs. PV input cables must be equipped with the
connector.
G MC4 cable
plug
Eight pairs. Please insert MC4 cable gland to the
unconnected DC input terminal.

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2 Mounting Inverter onto 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 Place the backplate onto the chosen metal frame and adjust it until it is in a
horizontal position.
Step 2 Mark the positions to drill holes by using the backplate as the template.
Step 3 Drill 6 holes at the marks you have made. If the shape of the metal frame
doesn’t fit the holes on the backplate, re-drill holes on the backplate of
appropriate position according to the chosen frame.
In order to avoid electrical shock or other injury, inspect existing electronic
or plumbing installations before drilling holes.
Step 4 Fasten the backplate against the metal frame with bolts and nuts. The
dimensions of fasteners used in the following diagram are recommended.
The torque for fastening the nut is 35 Nm.

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Step 5 Lift up the inverter above the backplate and then slide down to make sure
that the recesses on the back of the inverter fit perfectly together with the
backplate.
Step 6 After fit the inverter to the backplate, fasten the inverter to the backplate
with two M4×16 screws.
Item Description Remar
k
A Hexagonal socket nut M10
B Spring washer -
C Washer -
D Hexagonal bolt M10*45
E Metallic wall -
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 four screws on the front cover of the connection cabinet and remove the
front cover to see the internal layout of the connection cabinet.

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3-2 Cables Selection
AC Cable
No. Description Remar
k
A Protective layer External diameter of the cable: 37~44 mm
B Length of insulation to be
stripped off 24 mm
C Insulation layer -
D Cross section of AC cables Range: 16-50mm2;
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
Shielded twisted pair cables or Shielded twisted pair Ethernet cables.

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3-3 AC Connection
Pull the cables and connect L1/L2/L3/N/PE cables ends to the corresponding
terminal blocks. Fix the AC cable to the corresponding terminals with torque of
8…12 Nm.
3-4 DC Connection
Step 1 Check the connection cable of PV string for the correct polarity and that the
open-circuit voltage does not exceed the inverter input limit 1100V, even
under the lowest operating temperature.
• Check the positive and negative polarity of the PV cells. After
confirmation, you can insert the DC connectors into the input terminals
on the bottom of the inverter.
• For the same MPPT, reverse connection of a single string is prohibited.
A permanent failure of the system or inverter may follow if otherwise.

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Step 2 Insert the positive and negative DC connectors into the input terminals
on the bottom of the inverter until there is an audible sound.
3-5 Second Protective Earth Terminal
There is a second PE terminal on one side of the inverter and it should be grounded.
Fig. 3-1 Second PE terminal
The ground connection of this second PE terminal cannot replace the
connection of the PE terminal of the AC cables. Make sure the two PE
terminals are all grounded reliably. Sungrow shall hold no liability for any
possible consequences caused by ignorance of this warning.

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Cable Connection
Fig. 3-2 Second PE connection
* Connection parts are not within the scope of delivery
3-6 Communication Connection
There are two communication waterproof connection terminal on the bottom of the
inverter. RS485 A/B terminals, RS485 interface and Ethernet interface (optional) are
provided on the configuration circuit board of the junction box. A 120Ωterminating
resistor can be connected between the A and B communication cable through the
dip switch.
3-7 Completing Installation
Seal the gaps between the cables and the glands inside the lower part of the
cabinet by fireproofing mud. Inspect before commissioning and reassemble the
front cover of the connection cabinet.
Item Name Description
A Screw M6×12mm
B Lock washer -
C Washer -
D Cable socket -
E Yellow-green
cable*
-

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4 Commissioning
Before starting SG36KTL-M, make sure all installation and connections are
completed and verified.
Step 1 Close the AC circuit breaker.
Step 2 Rotate DC switch to“ON”position.
Step 3 Suppose there are sufficient sunlight and enough DC power. PV arrays
initialize and supply DC power to inverter. The LCD display is activated
when DC voltage exceeds inverter startup votlage. If there is a defect on the
display, contact Sungrow.
Button Operation Description
Press for less
than 2 seconds
Move upwards or downwards or scroll among set
values. Hereinafter, it is referred to as “Press ”.
Press for more
than two
seconds
Return to the previous menu or cancel the command.
Hereinafter, it is referred to as “Press ESC”.
Press for less
than 2 seconds
Move left or right, or turn pages. Hereinafter, it is
referred to as “Press ”.
Press for more
than two
seconds
Enter into the sub-menu or confirm the command.
Hereinafter, it is referred to as “Press ENTER”.
Step 4 Press to choose country code.
Confirm the settings by Pressing
ENTER.
Step 5 Select the country code
according to the installation
country of the inverter. Each
country code represents
corresponding local protective
parameters that have been
preset before delivery. Before
country setting, there is warning
screen. Operate according to the
warning information and press
ENTER.