Sungrow SG8KTL-EC Owner's manual

SG8K_10K_12KTL-EC-QUEN-Ver13-201409 Version: 1.3
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Quick User Manual
SG8KTL-EC/SG10KTL-EC/
SG12KTL-EC
PV Grid-Connected Inverter

I
All Rights Reserved.
No part of this document may be reproduced in any form or by any means without
the prior written permission of Sungrow Power Supply Co., Ltd.
Trademarks
and other Sungrow trademarks used in this manual are owned by
Sungrow Power Supply Co., Ltd.
All other trademarks or registered trademarks mentioned in this document owned
by their respective owners
Notice
The contents of the manual will be periodically updated or revised due to the
product development. Specifications are subject to changes without advance
notice!
The latest manual can be acquired via www.sungrowpower.com.
Contact Information
Should you have any question about this product, please contact us.
Company: Sungrow Power Supply Co., Ltd.
Website: www.sungrowpower.com
Email: [email protected], [e-mail]
Address: No.1699 Xiyou Rd., New & High Technology Industrial Development
Zone, Hefei, P. R. China.
Zip: 230088
Telephone: [phone]
Fax: [phone]

II
About this manual
This quick user manual provides a general instruction required for installing, wiring,
commissioning and operating the SG8KTL-EC, SG10KTL-EC and SG12KTL-EC
inverters.
SG8KTL-EC, SG10KTL-EC and SG12KTL-EC will be referred to as inverter hereinafter
unless specified otherwise.
For further instructions on installing or operating, please refer to the
detailed user manual which you can require on the package CD or via
www.sungrowpower.com.
To prevent personal injury or material damage, the inverter must only be installed,
operated, maintained and serviced by qualified personnel:
They must be trained specially;
They have already read over and understood the manual and other related
documents;
They have been familiar with safety requirements for electrical system and local
safety-related guidelines.
The contents of the manual will be periodically updated or revised due to the
product development. Specifications are subject to changes without advance
notice!
The latest manual can be acquired via www.sungrowpower.com.
In no case shall this quick user manual substitute for the user manual or
related notes on the devices.
Any violation could result in personal death or injury or device damage.
Keep this manual in a convenient place for future reference.

III
Contents
About this manual..........................................................................II
1Safety Instructions...................................................................1
1.1Symbols Explanation............................................................................................1
1.2Symbols on the Inverter Body...........................................................................2
1.3Important Safety Instructions ...........................................................................2
2Product Introduction ...............................................................6
2.1Inverter Appearance .............................................................................................7
2.2Unpacking and Inspecting.................................................................................8
3Mechanical Installation ...........................................................9
3.1Select an Optimal Installation Position..........................................................9
3.2Installation............................................................................................................. 11
4Electrical Connection.............................................................12
4.1Cables Selection ..................................................................................................12
4.2AC Connection..................................................................................................... 13
4.3DC Connection..................................................................................................... 15
4.3.1 PV Mode Configuration ....................................................................................... 15
4.3.2 DC Cables Connection ......................................................................................... 16
4.4Second Protective Earth Terminal................................................................. 17
4.4.1 Second PE Terminal ............................................................................................... 17
4.4.2 Second PE Connection......................................................................................... 17
4.5Communication Connection ..........................................................................18
4.5.1 Interfaces Overview .............................................................................................. 18
4.5.2 RS485 Communication Connection................................................................ 18
4.5.3 Ethernet Communication Connection........................................................... 19
4.5.4 Power Control Configuration............................................................................. 20
5Commissioning ......................................................................23

IV
5.1Description of Button Function..................................................................... 23
5.2Commissioning Procedure.............................................................................. 23
6Viewing PV Plant Information...............................................26
6.1SolarInfo Bank Connection ............................................................................. 26
6.2Registration and Adding PV Plant ................................................................ 27
7Appendix ................................................................................32

1
1 Safety Instructions
1.1 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 the following 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.

1 Safety Instructions Quick User Manual
2
1.2 Symbols on the Inverter Body
Disconnect the inverter from mains and PV generator before
service!
Do not touch any inner live parts until 10 minutes after
disconnection from the utility grid and the PV input.
Hot surface! In order to reduce the risk of burns, do not touch the
hot surface when the device is running.
Look over the user manual before any operation on the inverter!
The installation and service of the inverter unit can only be
performed by qualified personnel.
1.3 Important Safety Instructions
The inverter has been designed and tested strictly according to the international
safety regulations. As electrical and electronic equipment, safety instructions related
to them must be complied with during installation, operation and maintenance.
The following safety instructions must be read and kept in mind prior to any work.
Before Installation
There is a risk of injury due to improperly handling the device!
Always follow the instructions contained in the manual when moving and
positioning the inverter.
The weight of the device can cause injuries, serious wounds, or bruise if
improperly handled.

Quick User Manual 1 Safety Instructions
3
During Installation
Prior to installing the inverter onto the wall, it is crucial to make certain that
the inverter is not electrically connected.
System performance loss due to bad ventilation!
The device requires good quality ventilation during operation. It is essential
to keep the unit upright and nothing covering the heat sink in order to
ensure that the device interior is well cooled down.
During Electrical Connection
PV arrays will produce electrical energy when exposed to sunlight and thus
can create an electrical shock hazard.
Wiring of the PV arrays should be performed only by qualified personnel.
PV modules should be covered by opaque materials during wiring.
All electrical connections must be in accordance with local and national
standards.
Only with the permission of the local energy sector, the inverter can be
connected into the utility grid.
All cables must be firmly attached, undamaged, properly insulated and
adequately dimensioned.

1 Safety Instructions Quick User Manual
4
During Inverter Operation
Do not open the enclosure when the inverter is under voltage. There is an unlikely
but possible risk of explosion in very specific cases of malfunction. The enclosure
will protect persons and property from such an explosion, only if it is correctly
sealed.
There is a risk of inverter damage or personal injury!
DO NOT disconnect DC connectors while the inverter is under AC load! First
de-energize the device from dual power sources and then verify that there is
no voltage present.
There is a risk of burn!
DO NOT touch the device hot parts (such as heat sink) during operation.
Only LCD display panel and DC switch can be touched during inverter
operation.
Maintenance and Service
Before any service work, you should obey the following procedures.
Disconnect inverter from the utility grid first and then PV arrays;
Wait at least 10 minutes until the inner capacitors discharge completely;
Verify that no voltage or current is present with appropriate testing
device.
Keep non-related persons away!
A temporary warning sign and barrier must be posted to keep non-related
persons away in any period while performing electrical connection and
service work.

Quick User Manual 1 Safety Instructions
5
Any malfunction that may impair the inverter safety functions must be
repaired immediately before the inverter is restarted.
Inverter contains no owner serviceable parts inside. Please contact local
authorized personnel if any service work is required.
Servicing of the device in accordance with the manual should never be
undertaken in the absence of proper tools, test equipments or more
recent revision of the manual which is clearly and thoroughly
understood.
There is a risk of inverter damage if it is improperly serviced.
Use only accessories and spare parts approved by the inverter
manufacturer. Never modify the inverter or its components. Otherwise it
will cause loss of any or all warranty rights.
Others
The selected country settings can be changed only by qualified personnel!
Unauthorized modification to country settings should be prohibited.
Alternation of the country settings may cause a breach of the
type-certificate marking.
All safety instructions, warning labels and nameplate on the inverter body:
Must be clearly visible;
Must not be removed, covered and pasted.

6
2 Product Introduction
The inverters, which are 3-phase string inverters without transformer, are crucial
units between the PV strings and utility grid in the small-scaled PV power system.
The intended usage of the inverter is illustrated in Fig.2-1.
Any other or additional usage is not permitted except the intended usage.
Where the positive or negative terminal of PV strings needs to be grounded,
inverter cannot be connected to PV modules.
Grid Dispatch Center
K
Control signal
Household Load
AB
C
D
E
Fig. 2-1 Inverter Application in the PV Power System
Item Description Remark
A PV strings Monocrystalline silicon, polycrystalline silicon, and
thin-film of protection class II without grounding
B Inverter SG8KTL-EC, SG10KTL-EC and SG12KTL-EC
C Metering device Meter cupboard with power distribution system
D Household load Household appliances
E Utility grid TT, TN-C, TN-S, TN-C-S

Quick User Manual 2 Product Introduction
7
2.1 Inverter Appearance
3
1
2
4
1065 7 8 9
Fig. 2-2 Inverter Appearance
No. Name Description
1 LCD display panel Human-computer interaction interface for looking up
running information and configuring parameters.
2 Side grips The side grips are designed for holding the unit when
mounting, moving or servicing the inverter.
3 PV input parallel lid
(SG12KTL-EC)
There are two parallel blocks for PV input mode
configuration under the lid.
4 Ventilation holes To ensure sufficient heat dissipation.
5 Handles The handles are designed for transporting, installing
and dismantling the inverter.
6 AC connection
terminal
Inverter feeds power to utility grid via this terminal.
7 DC terminals There are four pairs of DC terminals for PV inputting
on the bottom of the inverter.
8 DC switch During normal operation it is in “ON” state. It can shut
down the inverter immediately in “OFF” position.
9 Communication
connection terminals
They are RS485 communication ports, Ethernet
communication ports and DI/DO ports.
10 Second PE terminal As specified in EN 50178.

2 Product Introduction Quick User Manual
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2.2 Unpacking and Inspecting
1. Unpack the carton and take out all the accessories.
2. Inspect the inverter for visible damages and check the completeness of the
delivery contents according to the inner packing list.
3. Contact your supplier if the delivery is incomplete or damaged. The inverter
is unavailable if any damage is detected.
Item Description
A Inverter.
B Wall bracket used to mount inverter onto the wall.
C Expansion bolts for fastening wall bracket onto concrete wall.
D Fastener set for installing wall bracket onto metal frame.
E Theft-proof device used to lock the inverter to the wall bracket.
F PV input connectors, including positive and negative connectors.
G Four-pole plugs for DI connection.
H Three-pole plugs for DO connection.
I Five M4 screws for second PE connection and spare.
J Two pairs. Seal the unplugged PV connectors with sealing caps.
K AC connector.
L Related documents, including quality certificates, quick user manual, CD,
packing list and product test reports.

9
3 Mechanical Installation
3.1 Select an Optimal Installation Position
The inverter must be mounted in a vertical site.
This requires a firm wall or metal frame.
Mount the inverter at an appropriate site without
flammable material and flammable gas nearby.
Install the inverter vertically with upside up at eye
level for easily buttons operation and display
reading.
The inverter unit with IP65 can be installed indoors
or outdoors where the ambient temperature and
relative humidity meet the requirements.

3 Mechanical Installation Quick User Manual
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Avoid exposing the inverter to direct sunlight or rain or snow! Shaded site of the
building would be better.
Take enough space for convection into consideration during installing multiple
inverters. It is suggested to position the multiple inverters in a staggered way if
necessary.
The device requires good quality ventilation during operation. System
performance loss due to bad ventilation!
Do not install the inverter in a enclosed cabinet.

Quick User Manual 3 Mechanical Installation
11
3.2 Installation
1. Move the inverter to the installation site with the help of another person or
the lifting device by means of the side grips.
Always keep in mind the weight of the inverter! The Installers should wear
gloves to avoid scratches when moving and mounting the inverter.
2. Fix the backplate on the wall
with appropriate fixing sets.
3. Mount the inverter onto the
backplate and secure it with a
M6×16 theft-proof screw.
4.
T
o protect the inverter from
theft, you can lock it to the wall
bracket with a theft-proof
device and a padlock.

12
4 Electrical Connection
Death hazards due to high voltage inside the inverter!
Make sure that all the DC and AC cables to the inverter are not live before
the electrical work.
Do not turn on the AC or DC circuit breaker until all inverter electrical
connections have completed.
Do not open the enclosure when the inverter is under voltage.
There is a risk of inverter damage or personal injury!
4.1 Cables Selection
Cable Type Single Conductor size Recommended conductor size
AC cable 4…10 mm²(AWG11…AWG7) ---
DC cables 4…6 mm²(AWG11…AWG9) ---
Second PE
Cable --- 6 mm2
Comm. cables
Shielded network cable ---
DI connection cable 5 cores cable(5×0.94 mm2)
DO connection cable 4 cores cable(4×2.5 mm2)

Quick User Manual 4 Electrical Connection
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4.2 AC Connection
AC Circuit Breaker
An independent three or four-pole circuit breaker for the inverter must be installed
at the output side to ensure that the inverter can be securely disconnected under
load.
Inverter Type Specification for AC Circuit Breaker
SG8KTL-EC 30A
SG10KTL-EC 30A
SG12KTL-EC 32A
It is not allowed for several inverters to use the same circuit breaker.
It is not allowed to connect loads between inverter and circuit breaker.
Connecting Inverter to AC Grid
Danger to human life due to high voltage inside the inverter!
Make sure that all the DC and AC cables to the inverter are not live before
the electrical work.
Do not turn on the AC circuit breaker until all inverter electrical connections
have completed.
1. Unscrew the water-proof terminal in the
following direction.

4 Electrical Connection Quick User Manual
14
2. Insert appropriate size AC cables into the
water-proof terminal.
3. Strip off insulation layer of all AC cables.
The length of strip insulation is
approximately 10 mm.
4. Fix all cables ends to the corresponding
terminals with the torque of 1 Nm
according to markings on the connector,
especially “PE” cable. If a phase wire is
connected to the “PE” terminal, it may
permanently destroy the inverter.
5. Pull cables outwards to confirm whether they are installed firmly.
6. Combine the two front-end parts together with the torque of 2 Nm.
7. Tighten the water-proof terminal with the torque of 5 Nm in opposite
direction.
8. Make sure the AC and DC circuit breakers are disconnected.
9. Connect phase cables and“N”cable to AC circuit breaker.
−Plug AC connector to corresponding AC terminal.
−Screw AC cables except the“PE”cable to the AC circuit breaker.
10. Connect AC circuit breaker to utility grid.
11. Make sure allAC cables are firmly installed.