Sungrow SG30KTL-M Owner's manual

SG30KTL-MV2-QUEN-Ver22-201503 Version: 2.2
Quick User Manual
SG30KTL-M
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 SG30KTL-M inverter.
In no case shall this quick user manual substitute for the user manual or related
notes on the device.
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.
This quick user manual shall be used in accompany with the attached CD.
SG30KTL-M will be referred to as inverter hereinafter unless otherwise specified.
To prevent personal injury or material damage, the inverter must only be installed,
operated, maintained and serviced by qualified personnel:
yThey must be trained specially;
yThey have already read over and understood the manual and other related
documents;
yThey have been familiar with safety requirements for electrical system and local
safety-related guidelines.
This manual must be always accompany the equipment and considered as an
integral part of the equipment. It should be available at all times to everyone who
works on the equipment, even when the equipment is transferred to another user.
All images used in the manual are for reference only. The actual product
you receive may differ.

III
Contents
1Important 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Intended Usage ......................................................................................................6
2.2Principle Description ............................................................................................7
2.3Unpacking and Detecting ..................................................................................8
3Mounting the Inverter ...........................................................10
3.1Select an optimal installation position ....................................................... 10
3.2Installation.............................................................................................................12
4Electrical Connection.............................................................13
4.1Cable Requirements...........................................................................................13
4.2AC Connection..................................................................................................... 14
4.3DC Connection..................................................................................................... 15
4.3.1 PV mode configuration........................................................................................ 15
4.3.2 DC Cable Connection Procedures.................................................................... 16
4.4Second Protective Earth Terminal.................................................................17
4.4.1 Second PE Terminals ............................................................................................. 18
4.4.2 Second PE Connection......................................................................................... 18
4.5Communication Connection .......................................................................... 18
4.5.1 Communication System ...................................................................................... 19
4.5.2 RS485 Communication Connection................................................................ 19
5Commissioning ......................................................................21
5.1Description of Button Function.....................................................................21
5.2Commissioning Procedure..............................................................................21

IV
6Technical Data ........................................................................26
6.1Technical Data ..................................................................................................... 26

1
1 Important 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 Important Safety Instructions Quick User Manual
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1.2 Symbols on the Inverter Body
This symbol indicates that you should wait at least 10 minutes
after disconnecting the inverter from the utility grid and from
the PV input before touching any inner live parts.
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.
Do not disconnect DC connectors from the unit under load!
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 keep in mind prior to any work.
Before Installation
There is a risk of injury due to improperly handling the device!
yAlways follow the instructions contained in the manual when moving and
positioning the inverter.
yThe weight of the equipment can cause injuries, serious wounds, or bruise
if improperly handled.
During Installation
Prior to installing the inverter onto the wall, it is crucial to make certain that the
inverter is not electrically connected.

Quick User Manual 1 Important Safety Instructions
3
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 equipment 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 equipment 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.
yWiring of the PV arrays should only be performed by qualified personnel.
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.
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 housing will
protect persons and property from such an explosion, only if it is correctly sealed.

1 Important Safety Instructions Quick User Manual
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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 equipment from dual power sources and then verify that
there is no voltage present.
There is a risk of burn!
Prevent from touching 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.
yDisconnect inverter from the utility grid side first and then PV arrays;
yWait at least 10 minutes until the inner capacitors discharge completely;
yVerify that no voltage or current present with appropriate testing device.
Keep unrelated person away!
A temporary warning sign and barrier must be posted to keep non-related
person away for any period while performing electrical connection and
service work.
yAny malfunction that may impair the inverter safety functions must be
repaired immediately before the inverter is restarted.
yInverter contains no owner serviceable parts inside. Please contact local
authorized personnel if any service work is required.

Quick User Manual 1 Important Safety Instructions
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Servicing of the device in accordance with the manual should never be
undertaken in the absence of proper tools, test equipment 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 other components of the
inverter. Otherwise it will cause loss of any or all warranty rights.
There is a risk of inverter damage due to electrostatic discharge!
The printed circuit boards contain components sensitive to electrostatic
discharge. Wear a grounding wrist band when handling the boards. Avoid
unnecessary touch with the boards during replacement.
Others
The selected country settings can be changed by qualified personnel only!
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:
yMust be clearly visible;
yMust not be removed, covered and pasted.

6
2 Product Introduction
2.1 Intended Usage
SG30KTL-M, 3-phase without transformer string inverter, is a crucial unit between
the PV strings and utility grid in the PV power system.
The inverter CANNOT be connected to the PV modules, the positive or
negative terminal of which needs to be grounded.
The intended usage of the inverter is illustrated in Fig. 2-1.
Fig. 2-1 Application of the inverter of the PV Power System
Item Description Note
A PV strings Monocrystalline silicon; polycrystalline silicon and
thin-film without grounding of protection class II
B Inverter SG30KTL-M
C Metering device meter cupboard with power distribution system
D Utility grid TT, TN-C, TN-S, TN-C-S
Any other or additional usage is not permitted except the intended usage.
Inverter may only accept PV modules with Protection Class II as its input.
Inverter may only be connected to utility grid via distribution board. Local
loads (home appliance, lights, motor loads, etc.) cannot be connected
between inverter and AC circuit breaker on the distribution board.

Quick User Manual 2 Product Introduction
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2.2 Principle Description
PV strings input voltage is transmitted to DC BUS via Boost circuit. The inverter is
equipped with MPPTs for two DC inputs to ensure that the maximum power can be
utilized even in different PV modules installation conditions.
Inversion circuit converts DC power into AC power, which will be fed into the utility
grid via five core terminals. Protective circuits are designed to guarantee inverter
safe operation and human safety.
We provide 2 options of inverters for the users, the principle design is illustrated Fig.
2-2:

2 Product Introduction Quick User Manual
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Fig. 2-2 Main Circuit Diagram of Inverter
The Version 2 inverter is equipped with Fuses for both positive and negative DC
inputs, and can detects positive fuse current.
2.3 Unpacking and Detecting
Unpack the carton and take out all the accessories. 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. SG30KTL-M is unavailable if
any damage is detected.
Fig. 2-3 Delivery Contents

Quick User Manual 2 Product Introduction
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Item Name Description
A Inverter unit ---
B Backplate It is used for mounting inverter onto the wall.
C Inverter cap It is for inverter’s better weather-proof function.
D Documents
Documents include quality certificate, packing list, product
test report，CD and quick user manual.
E Expansion
bolts
Six units. It is used for fastening backplate onto concrete
wall.
F Fastener set Six units. It is used for fastening backplate onto metal frame.
G Fix screws 2 M4×16 screws for fix the inverter to the backplate.
H DC
connectors
Ten pairs. PV input cables must be equipped with the
connector.
I Waterproof
plugs
Four pairs. Seal the unused DC terminals with waterproof
plugs.
J Jumper
cables
Configure PV configuration in parallel mode via jumper
cables.

10
3 Mounting the Inverter
3.1 Select an optimal installation position
yThe inverter must be mounted on a firm wall
or metal frame.
yMount the inverter at an appropriate site
without flammable material and flammable
gas nearby.
yInstall the inverter vertically at eye level or
tilted backwards by max. 30°.
yThe inverter unit with IP65 can be installed
indoors or outdoors where the ambient
temperature and relative humidity meet the
requirement.

Quick User Manual 3 Mounting the Inverter
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yAvoid exposing the inverter to the sunlight or rain or snow directly!
yTake enough space for convection into consideration during installing multiple
inverters. It is suggested that position the multiple inverters in a staggered way if
necessary.
yDo not install the inverter in a closed cabinet.

3 Mounting the Inverter Quick User Manual
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3.2 Installation
Step 1 Move the inverter to the installation site with the help of another person or
the lifting device by means of the handles.
Always remember the weight of the inverters! Grasp the equipment by both
hands by means of handles.
Step 2 Fix the backplate on the wall with
appropriate fixing sets.
Step 3 Assemble the top cap of the inverter.
Step 4 Mount the inverter onto the backplate
and secure it with M4 screws.

13
4 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.
Do not open the enclosure when the inverter is under voltage.
There is a risk of inverter damage or personal injury!
4.1 Cable Requirements
Cable Conductor size Recommended
conductor size
AC Cable 8AWG...5AWG 8...16mm² ---
DC Cables 12AWG...10AWG 4...6mm² 11AWG 4mm²
RS485 Comm. Cables Twist-pair type cable or Twist-pair
type shielding Ethernet cable -
Second PE Cable 10AWG…8AWG 6mm² 9AWG 6mm²

4 Electrical Connection Quick User Manual
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4.2 AC Connection
AC Side Circuit Breaker
An independent three or four-pole circuit breaker (minimum size value 63A) for
each inverter must be installed at the output side to ensure that the inverter can be
securely disconnected.
There are some points that are not allowed for the inverter:
yIt is not allowed for several inverters to use the same circuit breaker.
yIt is not allowed to connect loads between inverter and circuit breaker.
Connecting Inverter to AC Grid
Danger to human life 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 circuit breaker until all inverter electrical
connections have completed.
Step 1 Disconnect AC circuit breaker and prevent it from reconnection
inadvertently.
Step 2 Loose the six screws on the
lower connection cabinet.
Step 3 Pull the cables and connect
L1/L2/L3/N/PE cables ends
to the corresponding
terminal blocks.