Goodwe SDT G2 Series User manual

User Manual
Grid-Tied PV Inverter
SDT G2 Series
4-25kW
V1.5-2023-12-25

I
Copyright Statement
User Manual V1.5-2023-12-25
No part of this manual can be reproduced or transmitted to the public platform in any form or
by any means without the prior written authorization of GoodWe Technologies Co., Ltd.
The information in this user manual is subject to change due to product updates or other
reasons. This guide cannot replace the product labels or the safety precautions in the user
manual unless otherwise specied. All descriptions in the manual are for guidance only.
and other GOODWE trademarks are trademarks of GoodWe Technologies Co.,
Ltd. All other trademarks or registered trademarks mentioned in this manual are owned by
GoodWe Technologies Co., Ltd.
Copyright ©GoodWe Technologies Co., Ltd., 2023. All rights reserved
Trademarks
Notice

II
Content User Manual V1.5-2023-12-25
CONTENTS
1 About This Manual .................................................................1
1.1 Applicable Model..........................................................................................1
1.2 Target Audience............................................................................................1
1.3 Symbol Denition.........................................................................................2
2 Safety Precaution...................................................................3
2.1 General Safety ..............................................................................................3
2.2 DC Side ..........................................................................................................3
2.3 AC Side...........................................................................................................4
2.4 Inverter Installation .....................................................................................4
2.5 Personal Requirements...............................................................................4
3 Product Introduction.............................................................5
3.1 Application Scenarios ..................................................................................5
3.2 Supported Grid Types.................................................................................5
3.4 Appearance...................................................................................................6
3.4.1 Parts........................................................................................................................6
3.4.2 Dimension..............................................................................................................9
3.4.3 Indicators .............................................................................................................11
3.4.4 Nameplate ...........................................................................................................13
4 Check and Storage ...............................................................14
4.1 Check Before Receiving.............................................................................14
4.2 Deliverables ................................................................................................14
4.3 Storage .......................................................................................................15
5 Installation ...........................................................................16
5.1 Installation Requirements.........................................................................16
5.2 Inverter Installation ...................................................................................18
5.2.1 Moving the Inverter............................................................................................18
5.2.2 Installing the Inverter........................................................................................18
6 Electrical Connection...........................................................22

III
Content
User Manual V1.5-2023-12-25
6.1 Safety Precautions.....................................................................................22
6.2 Connecting the PE Cable ..........................................................................22
6.3 Connecting the PV Input Cable ...............................................................23
6.4 Connecting the AC Output Cable ............................................................29
6.5 Communication .........................................................................................33
6.5.1 Connecting the Communication Cable (optional)..........................................33
6.5.2 DRM Description .................................................................................................34
6.5.2 Installing the Communication Module (optional)..........................................38
7 Equipment Commissioning.................................................39
7.1 Check Items Before Switching Power ON ..............................................39
7.2 Power On....................................................................................................39
8 System Commissioning .......................................................40
8.1 Indicators and Button...............................................................................40
8.2 Setting Inverter Parameters via LCD ......................................................42
8.2.1 LCD Menu Introduction.....................................................................................42
8.2.2 Inverter Parameter Introduction .....................................................................44
8.3 Setting Inverter Parameters via App ......................................................46
8.4 Monitoring via SEMS Portal .....................................................................46
9 Maintenance.........................................................................47
9.1 Power O the Inverter..............................................................................47
9.2 Removing the Inverter..............................................................................47
9.3 Disposing of the Inverter .........................................................................47
9.4 Troubleshooting ........................................................................................47
9.5 Routine Maintenance................................................................................51
10 Technical Parameters ........................................................52

1
01 About This Manual
User Manual V1.5-2023-12-25
Model Nominal Output Power Nominal Output Voltage
GW4K-DT 4KW 230/400, 3L/N/PE
GW4000-SDT-20 4KW 400, 3L/N/PE
GW5K-DT 5KW 230/400, 3L/N/PE
GW5000-SDT-20 5KW 400, 3L/N/PE
GW6K-DT 6KW 230/400, 3L/N/PE
GW6000-SDT-20 6KW 400, 3L/N/PE
GW8K-DT 8KW
400, 3L/N/PE
GW10KT-DT 10KW
GW12KT-DT 12KW
GW15KT-DT 15KW
GW17KT-DT 17KW
GW20KT-DT 20KW
GW25KT-DT 25KW
GW8KAU-DT 8KW
GW9.9KAU-DT 9.9KW
GW10KAU-DT 10KW
GW15KAU-DT 15KW
GW20KAU-DT 20KW
GW8000-SDT-20 8KW 3/N/PE, 220/380, 230/400,
240/415
GW10K-SDT-20 10KW
GW12K-SDT-20 12KW
GW12KLV-SDT-20 12KW 220/127, 3L/N/PE
GW15K-SDT-20 15KW 3/N/PE, 220/380, 230/400,
240/415
GW17K-SDT-20 17KW
GW20K-SDT-20 20KW
1 About This Manual
This manual describes the product information, installation, electrical connection,
commissioning, troubleshooting, and maintenance. Read through this manual before installing
and operating the product. All the installers and users have to be familiar with the product
features, functions, and safety precautions. This manual is subject to update without notice. For
more product details and latest documents, visit https://en.goodwe.com/.
1.1 Applicable Model
This manual applies to the listed inverters below (SDT G2 for short):
1.2 Target Audience
This manual applies to trained and knowledgeable technical professionals. The technical
personnel has to be familiar with the product, local standards, and electric systems.

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01 About This Manual User Manual V1.5-2023-12-25
1.3 Symbol Denition
Dierent levels of warning messages in this manual are dened as follows:
DANGER
Indicates a high-level hazard that, if not avoided, will result in death or serious injury.
WARNING
Indicates a medium-level hazard that, if not avoided, could result in death or serious injury.
CAUTION
Indicates a low-level hazard that, if not avoided, could result in minor or moderate injury.
NOTICE
Highlight and supplement the texts. Or some skills and methods to solve product-related
problems to save time.

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User Manual V1.5-2023-12-25 02 Safety Precaution
2 Safety Precaution
2.1 General Safety
2.2 DC Side
Notice
• The information in this document is subject to change due to product updates or
other reasons. This manual cannot replace the product labels otherwise specied. All
descriptions here are for guidance only.
• Before installations, read through the user manual to learn about the product and the
precautions.
• All installations should be performed by trained and knowledgeable technicians who are
familiar with local standards and safety regulations.
• Use insulating tools and wear personal protective equipment when operating the
equipment to ensure personal safety. Wear anti-static gloves, cloths, and wrist strips when
touching electron devices to protect the inverter from damage.
• Strictly follow the installation, operation, and conguration instructions in this manual. The
manufacturer shall not be liable for equipment damage or personal injury if you do not
follow the instructions. For more warranty details, visit https://en.goodwe.com/warranty.
asp .
Notice
The inverters are designed and tested strictly complies with related safety rules. Read and
follow all the safety instructions and cautions before any operations. Improper operation
might cause personal injury or property damage as the inverters are electrical equipment.
DANGER
Connect the DC cables using the delivered DC connectors and terminals. The manufacturer
shall not be liable for the equipment damage if other connectors or terminals are used.
WARNING
• Ensure the component frames and the bracket system are securely grounded.
• Ensure the DC cables are connected tightly and securely.
• Measure the DC cable using the multimeter to avoid reverse polarity connection. Also, the
voltage should be under the permissible range.
• The PV modules used with the inverter must have an IEC61730 class A rating.
• If there are more than 3 PV strings on input side, an additional fuse installation will be
suggested.
• When exposed to sunlight, the PV array will generate very high voltage which can cause
electrical shock hazard. Please strictly follow the instruction we provided.

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02 Safety Precaution User Manual V1.5-2023-12-25
2.4 Inverter Installation
DANGER
• Terminals at the bottom of the inverter cannot bear much load. Otherwise, the terminals
will be damaged.
• All labels and warning marks must be clear and distinct after the installation. Do not block,
alter, or damage any label.
• Testing to AS/NZS 4777.2:2020 for multiple inverter combinations has not been conducted.
So external devices should be used in accordance with the requirements of AS/NZS 4777.1.
• Warning labels on the inverter are as follows.
2.5 Personal Requirements
NOTICE
• Personnel who install or maintain the equipment must be strictly trained, learn about
safety precautions and correct operations.
• Only qualied professionals or trained personnel are allowed to install, operate, maintain,
and replace the equipment or parts.
2.3 AC Side
WARNING
• The voltage and frequency at the connecting point should meet the on-grid requirements.
• An additional protective device like the circuit breaker or fuse is recommended on the
AC side. Specication of the protective device should be at least 1.25 times the maximum
output current.
• You are recommended to use copper cables as AC output cables. Contact the manufacturer
if you want to use other cables.
High voltage hazard. Power
o the inverter rst before
any operations.
Potential risks exist. Wear
proper PPE before any
operations.
Read through the guide
before any operations.
Delayed discharge. Wait until
the components are totally
discharged after power o.
High-temperature hazard. Do
not touch the equipment to
avoid being burnt.
Do not dispose of the product
as household waste. Discard
the product in compliance with
local laws and regulations,
or send it back to the
manufacturer.
CE marking. Grounding point. Indicates the
position for connecting the PE
cable.
RCM marking. NA NA
5min

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User Manual V1.5-2023-12-25 03 Product Introduction
3 Product Introduction
3.1 Application Scenarios
The SDT G2 Series inverter is a three-phase PV string grid-tied inverter. The inverter converts
the DC power generated by the PV module into AC power and feeds it into the utility grid. The
intended use of the inverter is as follows:
PV String Inverter
Circuit
Breaker Utility
Grid
Power
distribution
cabinet
Transformer
3.2 Supported Grid Types
For the grid type with neutral wire, the N to ground voltage must be less than 10V.
Inverter Inverter Inverter Inverter
Inverter
L1
L2
L3
N
PE
PE
TN-S
L1
L2
L3
PEN
PE
TN-C
L1
L2
L3
N
PE
PE
TN-C-S
L1
L2
L3
N
PE
TT
L1
L2
L3
PE
IT

6
03 Product Introduction User Manual V1.5-2023-12-25
3.4 Appearance
3.4.1 Parts
GW4K-DT, GW4000-SDT-20, GW5K-DT,
GW5000-SDT-20, GW6K-DT, GW6000-
SDT-20
GW8K-DT, GW10KT-DT
GW12KT-DT, GW15KT-DT
1. LED Indicator 2. LCD (optional) 3. Button (optional)
4. PE Terminal 5. Mounting Plate 6. PV Input Terminal
7. DC Switch 8. Ventilation valve 9. Bluetooth or Wi-Fi/LAN Kit or
WiFi or 4G or GPRS Port
10. RS485 or Smart
Meter COM Port 11. DRED or Remote Shutdown COM Port 12. AC Output Port
13. Fan

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User Manual V1.5-2023-12-25 03 Product Introduction
GW8KAU-DT, GW9.9KAU-DT, GW10KAU-DT,
GW15KAU-DT, GW20KAU-DT, GW17KT-DT,
GW20KT-DT, GW25KT-DT
GW8000-SDT-20, GW10K-SDT-20 GW12K-SDT-20, GW12KLV-SDT-20,
GW15K-SDT-20, GW17K-SDT-20,
GW20K-SDT-20
1. LED Indicator 2. LCD (optional) 3. Button (optional)
4. PE Terminal 5. Mounting Plate 6. DC Switch
7. USB Port (For Brazil
only) 8. PV Input Terminal (PV1)[1] 9. PV Input Terminal (PV2)
10. DRED or Remote
Shutdown COM Port 11.
Bluetooth or Wi-Fi/
LAN Kit or WiFi or 4G or
GPRS Port
12. RS485 or Smart Meter
COM Port
13. AC Output Port 14. Ventilation Valve 15. Fan[2]
[1]: GW25KT-DT: 3 x PV+/PV-; other models: 2 x PV+/PV-
[2]: Without Fan: GW8KAU-DT, GW10KAU-DT

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03 Product Introduction User Manual V1.5-2023-12-25
Name Description
PV Input Terminal Used to connect the PV module DC input cables.
DC Switch Start or stop DC input.
USB Port Reserved. USB Port is used for system upgrade and conguration.
Ventilation valve -
Communication
Port
Used to connect communication modules like Bluetooth, WiFi, LAN, 4G,
etc.
Smart Meter +
RS485 Used to connect the Smart Meter or RS485 communication cable.
DRED(6Pin)
/ Remote
Shutdown (2pin)
Used to connect DRED or remote shutdown communication cable. DRED
for Australia and New Zealand, Remote Shutdown only for Europe.
AC Output
Terminal Used to connect AC output cable. Connect the inverter and the utility grid.
Fans Used to cool the inverter. Without Fan: GW8KAU-DT, GW10KAU-DT.
LED Indicator Indicates working state of the inverter
LCD Optional. Used to check the parameters of the inverter.
Button Optional. Used to control contents displayed on the
screen.
Grounding Point Used to connect the PE cable.
Mounting Plate Used to install the inverter.

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User Manual V1.5-2023-12-25 03 Product Introduction
3.4.2 Dimension
Dimensions of GW4K-DT, GW4000-SDT-20, GW5K-DT, GW5000-SDT-20, GW6K-DT, GW6000-
SDT-20, GW10KT-DT:
433mm
354mm 147mm
200mm
45mm
Dimensions of GW8KAU-DT, GW9.9KAU-DT, GW10KAU-DT, GW15KAU-DT, GW20KAU-DT, GW17KT-
DT, GW20KT-DT, GW25KT-DT, GW25KT-DT, GW8000-SDT-20, GW10K-SDT-20:
Dimensions of GW8K-DT, GW10KT-DT, GW12KT-DT, GW15KT-DT:
433mm
354mm 155mm
200mm
45mm

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03 Product Introduction User Manual V1.5-2023-12-25
Dimensions of GW12K-SDT-20, GW12KLV-SDT-20, GW15K-SDT-20, GW17K-SDT-20,
GW20K-SDT-20:

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User Manual V1.5-2023-12-25 03 Product Introduction
Inverters Designed with LCD
3.4.3 Indicators
As a human-computer interaction interface, LCD display panel comprises of LED indicators,
buttons and LCD display on the front panel of the inverter. LED indicates the working status of
the inverter. Buttons and LCD are used for conguration and viewing parameters.
Indicator Status Description
ON = Wi-Fi IS CONNECTED/ACTIVE
BLINK 1 = Wi-Fi SYSTEM IS RESETTING
BLINK 2 = NOT CONNECTED TO THE ROUTER
BLINK 4 = Wi-Fi SERVER PROBLEM
BLINK = RS485 IS CONNECTED
OFF = Wi-Fi IS NOT ACTIVE
ON = THE INVERTER IS FEEDING POWER
OFF = THE INVERTER IS NOT FEEDING POWER AT THE MOMENT
ON = A FAULT HAS OCCURRED
OFF = NO FAULT

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03 Product Introduction User Manual V1.5-2023-12-25
Inverters Designed without LCD
Indicator Status Description
ON = EQUIPMENT POWER ON
OFF = EQUIPMENT POWER OFF
ON = THE INVERTER IS FEEDING POWER
OFF = THE INVERTER IS NOT FEEDING POWER
SINGLE SLOW FLASH = SELF CHECK BEFORE CONNECTING TO
THE GRID
SINGLE FLASH = CONNECTING TO THE GRID
ON = WIRELESS IS CONNECTED/ACTIVE
BLINK 1 = WIRELESS SYSTEM IS RESETTING
BLINK 2 = WIRELESS ROUTER PROBLEM
BLINK 4 = WIRELESS SERVER PROBLEM
BLINK = RS485 IS CONNECTED
OFF = WIRELESS IS NOT ACTIVE
ON = A FAULT HAS OCCURRED
OFF = NO FAULT

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User Manual V1.5-2023-12-25 03 Product Introduction
3.4.4 Nameplate
The nameplate is for reference only.
Goodwe trademark, product type, and
product model
Technical parameters
Safety symbols and certication marks
Contact information and serial
number
Model
Product: Grid-Tied PV Inverter
Vmax PV: ****V d.c.
Isc PV: **.*/**.*Ad.c.
MPPT voltage range: ***...***Vd.c.
Max. PV current: **/**Ad.c.
Rated grid voltage:3/N/PE Va.c.~ ***/***,***/***,***/***
Max current: **.*A a.c.
AC-grid frequency: **/**Hz
Rated/Max apparent power: **/**kV A
Power factor range: Default >*.**,*.*cap...*.*ind
Overvoltage-category:
DCⅡ;ACⅢ
IP degree: IP65
Protective class: ClassⅠ
Operating temperature range: -**...**°C
Inverter topology: Non-isolated
Rated

active power: *kW
: *****-***
GoodWe Technologies Co.,Ltd.
High voltage hazard. Power
o the inverter before any
operations.
Potential risks exist. Wear proper
PPE before any operations.
Read through the user
manual before any
operations.
Delayed discharge. Wait until the
components are discharged after
power o.
High-temperature hazard.
Do not touch the equipment
to avoid being hurt.
Do not dispose of the product
as household waste. Discard the
product in compliance with local
laws and regulations, or send it
back to the manufacturer.
CE Mark. RCM Mark.
5min

14
04 Check and Storage User Manual V1.5-2023-12-25
4 Check and Storage
4.1 Check Before Receiving
Check the following items before receiving the product.
1. Check the outer packing box for damage, such as holes, cracks, deformation, and others
signs of equipment damage. Do not unpack the package and contact the supplier as soon as
possible if any damage is found.
2. Check the inverter model. If the inverter model is not what you requested, do not unpack the
product and contact the supplier.
3. Check the deliverables for correct model, complete contents, and intact appearance. Contact
the supplier as soon as possible if any damage is found.
4.2 Deliverables
Inverter X 1 PV Box X N
PV Box
Bracket X N
Positive PV
Connector
X N
Negative PV
ConnectorX N
PE OT
Terminal X 1
Cross
Screwdriver X N
Screw X N
Communication
Connector X N
AC PIN
Terminal X N
Mounting
Bracket X N
or
AC Connector
X N
Communication
Module X N
Expansion
Bolt X N
PIN Terminal
X N Documentation
X 1
AC Connector
X N
Mounting
Bracket X N
AC cable OT
Terminal X N

15
User Manual V1.5-2023-12-25 04 Check and Storage
NOTICE
• The number of expansion bolts, screws, PV connectors, AC cable OT Terminal, and PIN
terminals are various depending on the dierent inverters. The actual accessories may
dier.
• Communication module types including WiFi, 4G, LAN, GPRS, Bluetooth, etc. The actual
module delivered depends on the communication method of the selected inverter.
• The model of the AC connector and mounting bracket are various depending the dierent
inverters. The actual accessories may dier.
• Only model GW15KAU-DT and GW20KAU-DT are equipped with PV box and PV box bracket.
4.3 Storage
If the equipment is not to be installed or used immediately, please ensure that the storage
environment meets the following requirements:
1. Do not unpack the outer package or throw the desiccant away.
2. Store the equipment in a clean place. Make sure the temperature and humidity are
appropriate and no condensation.
3. The height and direction of the stacking inverters should follow the instructions on the
packing box.
4. The inverters must be stacked with caution to prevent them from falling.
5. If the inverter has been long term stored, it should be checked by professionals before being
put into use.

16
05 Installation User Manual V1.5-2023-12-25
5 Installation
5.1 Installation Requirements
1. Do not install the equipment in a place near ammable, explosive, or corrosive materials.
2. Install the equipment on a surface that is solid enough to bear the inverter weight.
3. Install the equipment in a well-ventilated place to ensure good dissipation. Also, the
installation space should be large enough for operations.
4. The equipment with a high ingress protection rating can be installed indoors or outdoors.
The temperature and humidity at the installation site should be within the appropriate range.
5. Install the equipment in a sheltered place to avoid direct sunlight, rain, and snow. Build a
sunshade if it is needed.
6. Do not install the equipment in a place that is easy to touch, especially within children’s
reach. High temperature exists when the equipment is working. Do not touch the surface to
avoid burning.
7. Install the equipment at a height that is convenient for operation and maintenance, electrical
connections, and checking indicators and labels.
8. Install the equipment away from electromagnetic interference.
Installation Environment Requirements
Mounting Support Requirements
1. The mounting support shall be nonammable and reproof.
2. Make sure that the support surface is solid enough to bear the product weight load.
3. Do not install the product on the support with poor sound insulation to avoid the noise
generated by the working product, which may annoy the residents nearby.