Goodwe ET Series User manual

User Manual
Hybrid Inverter
ET Series
15-30kW
V1.0-2022-8-30

I
User Manual V1.0-2022-08-30 Copyright Statement
The information in this user manual is subject to change due to product updates or other
reasons. This manual cannot replace the product safety labels unless otherwise specied. All
descriptions here are for guidance only.
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.
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.
Trademarks
Copyright©GoodWe Technologies Co., Ltd. All rights reserved.
Notice

II
CONTENT User Manual V1.0-2022-08-30
CONTENT
1 About This Manual ���������������������������������������������������������������������������� 1
1.1 Applicable Model .....................................................................................................................1
1.2 Target Audience .......................................................................................................................1
1.3 Symbol De󽗉nition ....................................................................................................................2
1.4 Updates ....................................................................................................................................2
2 Safety Precaution ����������������������������������������������������������������������������� 3
2.1 General Safety ..........................................................................................................................3
2.2 PV String Safety ........................................................................................................................3
2.3 Inverter Safety ..........................................................................................................................4
2.4 Battery Safety ...........................................................................................................................5
2.5 Personnel Requirements .........................................................................................................5
2.6 EU Declaration of Conformity ..................................................................................................5
3 Product Introduction ������������������������������������������������������������������������ 6
3.1 Product Overview ....................................................................................................................6
3.2 Application Scenarios ..............................................................................................................7
3.3 Working Mode ........................................................................................................................10
3.3.1 System Working Mode ...........................................................................................................................10
3.3.2 Inverter Operation Mode .......................................................................................................................15
3.4 Features ..................................................................................................................................16
3.5 Appearance ............................................................................................................................18
3.5.1 Parts .........................................................................................................................................................18
3.5.2 Dimension ..............................................................................................................................................18
3.5.3 Indicators ................................................................................................................................................19
3.5.4 Nameplate .............................................................................................................................................. 20
4 Check and Storage ���������������������������������������������������������������������������21
4.1 Check Before Receiving .........................................................................................................21
4.2 Deliverables ............................................................................................................................21
4.3 Storage ...................................................................................................................................22
5 Installation ��������������������������������������������������������������������������������������23
5.1 Installation Requirements .....................................................................................................23
5.2 Inverter Installation ...............................................................................................................26
5.2.1 Moving the Inverter ................................................................................................................................ 26
5.2.2 Installing the Inverter.............................................................................................................................26
6 Electrical Connection �����������������������������������������������������������������������28
6.1 System Wiring Diagram..........................................................................................................28
6.2 Safety Precaution ...................................................................................................................30
6.3 Connecting the PE cable ........................................................................................................30

III
User Manual V1.0-2022-08-30 CONTENT
6.4 Connecting the DC Input Cable(PV) ...................................................................................... 31
6.5 Connecting the battery cable ................................................................................................ 33
6.6 Connecting the AC Cable ....................................................................................................... 35
6.7 Communication Connection ................................................................................................. 36
6.7.1 Connecting the Communication Cable (Terminal Block) .................................................................... 38
6.7.2 Connecting the Communication Cable (RJ45 Connector) ................................................................... 39
6.7.3 Connecting the BMS or Meter Communication Cable .......................................................................... 40
6.7.4 Installing the Communication Module (Optional) ................................................................................ 42
7 Equipment Commissioning ��������������������������������������������������������������43
7.1 Check Before Power ON ......................................................................................................... 43
7.2 Power On ................................................................................................................................ 43
8 System Commissioning ��������������������������������������������������������������������44
8.1 Indicators and Buttons ..........................................................................................................44
8.2 Setting Inverter Parameters via PV Master App .................................................................... 45
8.3 Monitoring via SEMS Portal ................................................................................................... 45
9 Maintenance �����������������������������������������������������������������������������������46
9.1 Power OFF the Inverter .......................................................................................................... 46
9.2 Removing the Inverter ........................................................................................................... 46
9.3 Disposing of the Inverter ....................................................................................................... 46
9.4 Troubleshooting ..................................................................................................................... 47
9.5 Routine Maintenance ............................................................................................................. 55
10 Technical Parameters ���������������������������������������������������������������������56

1
User Manual V1.0-2022-08-30 01 About This Manual
1 About This Manual
1.1 Applicable Model
1.2 Target Audience
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.
This manual applies to trained and knowledgeable technical professionals. The technical
personnel has to be familiar with the product, local standards, and electric systems.
This manual applies to the listed inverters below:
Model Nominal Output Power Nominal Output Voltage
GW15K-ET 15000kW
380/400V, 3L/N/PE
GW20K-ET 20000kW
GW25K-ET 25000kW
GW29.9K-ET 29900kW
GW30K-ET 30000kW

2
01 About This Manual User Manual V1.0-2022-08-30
1.3 Symbol Denition
1.4 Updates
The latest document contains all the updates made in earlier issues.
V1.0 2022-08-30
• First Issue
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
Highlights key information and supplements the texts. Or some skills and methods to solve
product-related problems to save time.

3
User Manual V1.0-2022-08-30 02 Safety Precaution
2 Safety Precaution
2.1 General Safety
2.2 PV String Safety
NOTICE
• The information in this user manual is subject to change due to product updates or other
reasons. This guide cannot replace the product safety labels unless 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 operations 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, clothes, and wrist strips
when touching electronic 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, please visit https://en.goodwe.com/
warranty.
NOTICE
The inverters are designed and tested to strictly comply 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 of the inverter to the included DC terminals. Severe damage might
happen if other types of DC terminals are used, which are beyond the manufacturer’s liability.
WARNING
• Ensure the component frames and the bracket system are securely grounded.
• Ensure the DC cables are connected tightly, securely and correctly.
• Measure the DC cables with a multimeter to avoid reverse polarity connection. Also, the
voltage should be under the permissible range.
• Do not connect one PV string to more than one inverter at the same time. Otherwise, it
may damage the inverter.
• The PV modules used with the inverter must have an IEC61730 class A rating.
Please strictly follow these safety instructions in the user manual during the operation.

4
02 Safety Precaution User Manual V1.0-2022-08-30
DANGER
• All labels and warning marks should be visible after the installation. Do not cover, scrawl,
or damage any label on the equipment.
• Warning labels on the inverter are as follows:
DANGER High voltage hazard.
Disconnect all incoming
power and turn o the
product before working on it.
Delayed discharge. Wait 5
minutes after power o until
the components are completely
discharged.
Read through the user
manual before any
operations.
Potential risks exist. Wear
proper PPE before any
operations.
High-temperature hazard. Do
not touch the product under
operation to avoid being
burnt.
Grounding point.
CE certication mark Do not dispose of the inverter
as household waste. Discard
the product in compliance with
local laws and regulations,
or send it back to the
manufacturer.
2.3 Inverter Safety
WARNING
• The voltage and frequency at the connecting point should meet the on-grid requirements.
• Additional protective devices like circuit breakers or fuses are recommended on the AC
side. Specication of the protective device should be at least 1.25 times the maximum AC
output current.
• Make sure that all the groundings are tightly connected. When there are multiple inverters,
make sure that all the grounding points on the enclosures are equipotential bonding.
• The alarm can be cleared automatically if the inverter triggers a fault for less than 5 times
within 24 hours. The inverter will shutdown for protection after the 5th electric arc fault.
The inverter can operate normally after the fault is solved.
• BACK-UP is not recommended if the PV system is not congured with batteries. Otherwise,
the risk in system power usage is beyond the equipment manufacturer's warranty scope.

5
User Manual V1.0-2022-08-30 02 Safety Precaution
2.5 Personnel 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.
2.4 Battery Safety
WARNING
• The battery used with the inverter shall be approved by the inverter manufacturer. The
approved battery list can be obtained through the ocial website.
• Before installations, read through the corresponding battery's user manual to learn about
the product and the precautions. Strictly follow its requirements.
• If the battery discharged completely, please charge it in strict accordance with the
corresponding model's user manual.
• Factors such as: temperature, humidity, weather conditions, etc. may limit the battery's
current and aect its load.
• Contact after-sale service immediately if the battery is not able to be started. Otherwise,
the battery might be damaged permanently.
• Use the multimeter to measure the DC cable to avoid reverse polarity connection. Also, the
voltage should be under the permissible range.
• Do not connect one battery pack to more than one inverter at the same time. Otherwise, it
may cause damage to the inverter.
2.6 EU Declaration of Conformity
GoodWe Technologies Co., Ltd. hereby declares that the inverter with wireless communication
modules sold in the European market meets the requirements of the following directives:
• Radio Equipment Directive 2014/53/EU (RED)
• Restrictions of Hazardous Substances Directive 2011/65/EU and (EU) 2015/863 (RoHS)
• Waste Electrical and Electronic Equipment 2012/19/EU
• Registration, Evaluation, Authorization and Restriction of Chemicals (EC) No 1907/2006
(REACH)
GoodWe Technologies Co., Ltd. hereby declares that the inverter without wireless
communication modules sold in the European market meets the requirements of the following
directives:
• Electromagnetic compatibility Directive 2014/30/EU (EMC)
• Electrical Apparatus Low Voltage Directive 2014/35/EU (LVD)
• Restrictions of Hazardous Substances Directive 2011/65/EU and (EU) 2015/863 (RoHS)
• Waste Electrical and Electronic Equipment 2012/19/EU
• Registration, Evaluation, Authorization and Restriction of Chemicals (EC) No 1907/2006
(REACH)
You can download the EU Declaration of Conformity on https://en.goodwe.com.

6
03 Product Introduction User Manual V1.0-2022-08-30
3 Product Introduction
Inverters control and optimize the power in PV systems through an integrated energy
management system. The power generated in the PV system can be used, stored in the battery,
output to the utility grid, etc.
Intended usage
Model
Model description
3.1 Product Overview
This manual applies to the listed inverters below:
• GW15K-ET
• GW20K-ET
• GW25K-ET
• GW29.9K-ET
• GW30K-ET
No. Referring to Explanation
1 Brand Code GW: GoodWe
2 Rated Power 15K: the rated power is 15000W.
3 Series Code ET: ET series three-phase hybrid inverter
GW15K-ET
1 2 3
Supported Grid Types
TN-S
PE PE PE PE
L1
L2
L3
N
L1
L2
L3
N
PE
L1
L2
L3
N
PE
L1
L2
L3
PEN
TN-C TN-C-S TT
Inverter Inverter Inverter Inverter

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User Manual V1.0-2022-08-30 03 Product Introduction
3.2 Application Scenarios
WARNING
• The PV system is not suitable to connect equipment that relies on a stable power supply,
such as medical equipment to sustain life. Ensure that no personal injury is occurred when
the system is disconnected.
• Avoid loads with high start-up current like high-power water pumps in the PV system.
Otherwise, the o-grid output may fail due to excessive instantaneous power.
• BACK-UP is not recommended if the PV system is not congured with batteries. Otherwise,
the risk in system power usage is beyond the equipment manufacturer's warranty scope.
• Factors such as: temperature, humidity, weather conditions, etc. may limit the battery's
current and aect its load.
• If a rapid shutdown (RSD for short) module is congured in a PV system, make sure that
the RSD module matches the integrated RSD transmitter in the inverter, and if not, the
shutdown function may fail.
• When single overload protection occurs, the inverter can restart automatically; however,
the restarting time will be extended if it happens several times. For a faster restarting, try it
via APP .
• When the grid is disconnected, the o-grid function of the inverter will be closed
automatically if the load capacity exceeds the inverter's rated power. To enable it, turn o
the large loads and ensure the load power is less than the rated power of the inverter.
• Nomral household loads can be supported when the inverter is in back-up mode. Accepted
loads as below:
• Inductive loads: 1.5P non-inverter air conditioner can be connected to the inverter. If
two or more non-inverter air conditioners are connected, the back-up mode may be
unstable.
• Capacitive load: total power ≤ 0.66 times of the inverter’s rated output power.

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03 Product Introduction User Manual V1.0-2022-08-30
4
6
8
3
7
12
6
55
Self consumption mode
Power cable Signal cable
Utility meter Utility grid
PV string &
rapid shutdown
module
Battery
Battery breaker
BACK-UP load
ON-GRID
BACK-UP
Meter
AC circuit
breaker
Inverter
ON-GRID load
Load
breaker
SPDT (Single Pole,
Double Throw) switch
CT
No. Parts Description
1 PV string
& rapid
shutdown
module
Rapid shutdown function is optional. An external RSD module is
required to shut down the equipment rapidly. You can purchase the
module from the inverter manufacturer, or choose the AP RSD-D-XX
series or AP Tigo TS4 series. More information about the RSD module
can be obtained from the packing box.
2Inverter Supports ET 15 -30kW series inverters.
3 Battery The battery used with the inverter shall be approved by the inverter
manufacturer. The approved battery list can be obtained through the
ocial website.
4 Battery
breaker
Recommended specications: nominal current≥63A, nominal
voltage≥1000V.
5 Load Breaker Depend on the actual using load.
6 AC circuit
breaker and
SPDT switch
Recommended specications:
• GW15K-ET: nominal current≥32A, nominal voltage≥400V
• GW20K-ET: nominal current≥40A, nominal voltage≥400V
• GW25K-ET: nominal current≥50A, nominal voltage≥400V
• GW29.9K/30K-ET: nominal current≥63A, nominal voltage≥400V
7Smart meter The smart meter is delivered with the inverter or purchased from the
inverter manufacturer. Recommended model: GM3000 or GM3000C.
8BACK-UP
loads
• Connecting BACK-UP loads, such as loads requiring 24-hour power
supply or other important loads.
• Connecting unbalanced loads. L1, L2, L3 of the inverter respectively
connected to loads with dierent power.

9
User Manual V1.0-2022-08-30 03 Product Introduction
12
12
12
4
3
3
3
Parallel System Mode
No. Parts Description
1 PV string
& rapid
shutdown
module
Rapid shutdown function is optional. An external RSD module is
required to shut down the equipment rapidly. You can purchase the
module from the inverter manufacturer, or choose the AP RSD-D-
XX series or AP Tigo TS4 series. More information about the RSD
module can be obtained from the packing box.
2Hybrid inverter Supports ET 15 -30kW series inverters.
3 Battery The battery used with the inverter shall be approved by the inverter
manufacturer. The approved battery list can be obtained through
the ocial website.
4 Smart energy
controller
Purchase from the manufacturer.
Utility grid
Transformer
PV string & rapid
shutdown module
Battery
Battery
Battery
PV string & rapid
shutdown module
PV string & rapid
shutdown module
CT
Hybrid
inverter
Hybrid
inverter
Hybrid
inverter
Smart
energy
controller

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03 Product Introduction User Manual V1.0-2022-08-30
3.3 Working Mode
3.3.1 System Working Mode
• Daytime: when the electricity price is at its peak, the battery will power the load rst, and the
remaining power can be sold to the grid.
• Night: when the electricity price is at its valley, set the time for the grid to charge the battery.
Economic mode
NOTICE
• Select Economic mode only when it meets the local laws and regulations, e.g., whether the
grid is allowed to charge the battery. If not, do not use this mode.
• It is recommended to use economic mode in scenarios when the peak-valley electricity
price varies a lot.

11
User Manual V1.0-2022-08-30 03 Product Introduction
• When the power generated in the PV system is sucient, it will supply the loads in priority.
And the excess power will charge the batteries rst. The remaining power will be sold to the
grid.
• When the power generated in the PV system is insucient or no power is generated, the
battery will supply the loads in priority. If the battery power is insucient, then the load will
be powered by the grid.
• When the battery cannot supply power, the PV system will supply the loads in priority. If the
PV power is insucient, then the loads will be powered by the grid.
• If neither the PV system nor the battery could supply power, the grid would supply power to
the loads and form BYPASS output.
• When the grid is disconnected and the backup function is disabled, the power generated in
the PV system will supply the loads in priority, and the excess power will charge the batteries.
Self consumption mode
NOTICE
• For solar power, consider self consumption mode in priority: the excess power charges the
battery in day time; the battery supplies power to the load when there is no solar power
generated at night. This will improve the self consumption rate and saves electricity costs.
• It is suitable for areas with high electricity prices and little or no solar power generation
subsidies.
3
21 1

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03 Product Introduction User Manual V1.0-2022-08-30

13
User Manual V1.0-2022-08-30 03 Product Introduction
• When the power generated in the PV system is sucient:
• When the utility grid works properly, the power generated in the PV system will charge the
battery in priority. And the excess power will charge the load. The remaining power will be
sold to the grid.
• When the utility grid works abnormally, the power generated in the PV system will supply
the loads rst. And the excess power will charge the battery. The battery should charge
the loads if the PV power supply is insucient.
• When there is no power generated in the PV system:
• The grid will charge the battery and supply the load when the power grid is normal. (Do
not select this mode if the grid is not allowed to charge the battery according to the local
laws and regulations.)
• The inverter will enter o-grid mode and the battery will supply power to the load when
the grid is abnormal.
Back-up mode
NOTICE
• The back-up mode is mainly applied to the scenario where the grid is unstable and there
is an important load. When the grid is disconnected, the inverter turns to o-grid mode to
supply power to the load; when the grid is restored, the inverter switches to on-grid mode.
• The battery stops discharging when it reaches SOC. When there is sunlight the next day,
the battery starts to supply power to the load after it is charged to a certain power level.
3
1 2 2

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03 Product Introduction User Manual V1.0-2022-08-30
Peak Shaving mode
NOTICE
Peak shaving mode is mainly applicable to industrial and commercial scenarios. When the
total power consumption of the loads exceeds the peak shaving limit, the battery discharges
to reduce the power consumption exceeds the peak shaving limit.
Peak Shaving
SOC
Peak Shaving
limit
AB C D E F
300W
Time
Power
Time Description
A The battery charges the loads to shave the total power consumption of the loads
higher than the Peak Shaving limit.
B The PV system charges the battery in priority as the import power from the gird is
lower.
C The grid charges the battery as the import power from the grid is 300W lower than
the Peak Shaving limit.
D The PV system continues to charge the battery, but the grid stops charging. The
battery stops discharging as SOC is lower than Peak Shaving SOC.
E The battery enters self consumption mode as the battery SOC is higher than Peak
Shaving SOC.
FThe battery stops discharging for loads as Peak Shaving SOC is reached.

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User Manual V1.0-2022-08-30 03 Product Introduction
3.3.2 Inverter Operation Mode
No. Parts Description
1 Waiting
mode
Waiting stage after the inverter is powered on.
• When the conditions are met, it enters the self-check mode.
• If there is a fault, the inverter enters the fault mode.
2 Self-check
mode
Before the inverter starts up, it continuously performs self-check,
initialization, etc.
• When the conditions are met, it enters the grid-tied mode, and the
inverter starts on grid connection.
• If the grid is not detected, it enters the o-grid mode and the inverter
runs o-grid; if the inverter has no o-grid function, it enters the wait
mode.
• If the self-check is not passed, it enters the fault mode.
3 Grid-Tied
mode
The inverter is grid-tied successfully.
• If the grid is not detected, it enters the o-grid mode.
• If a fault is detected, it enters the fault mode.
• If the conditions do not meet grid-tied requirements and the o-grid
output function is not turned on, it enters the wait mode.
4O-grid
mode
When the grid is powered o, the inverter switches to the o-grid mode
and continues to supply power to the load via BACK-UP port.
• If a fault is detected, it enters the fault mode.
• If the conditions do not meet grid-tied requirements and the o-grid
output function is not turned on, it enters the wait mode.
• If the conditions meet grid-tied requirements and and the o-grid
output function is turned on, it enters the self-check mode.
5 Fault mode If a fault is detected, the inverter enters the fault mode. When the fault is
cleared, it enters the wait mode.
Waiting mode O-grid mode
Grid-Tied modeFault mode
Self-check
mode

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03 Product Introduction User Manual V1.0-2022-08-30
3.4 Features
For a safe operation, the inverter will automatically reduce the output power when the operating
environment is not ideal.
The following are the factors that may occur power derating. Please try to avoid them during
usage.
• Unfavorable environmental conditions, e.g., direct sunlight, high temperature, etc.
• Inverter's output power percentage has been set.
• Over-frequency derating.
• Higher input voltage value.
• Higher input current value.
Power derating
Reasons to occur electric arcs.
• Damaged connectors in the PV or battery system.
• Wrong connected or broken cables.
• Aging connectors and cables.
Methods to detect electric arcs
• The inverter has an integrated AFCI function.
• When the inverter detects an electric arc, users can nd the time of the fault and the detailed
phenomenon through the app.
• The alarm can be cleared automatically if the inverter triggers a fault for less than 5 times
within 24 hours. The inverter will shutdown for protection after the 5th electric arc fault. The
inverter cannot work normally until the fault is solved. Please refer to the PV Master App User
Manual for detailed operations.
AFCI
A signal transmitter is integrated into the inverter to communicate with the external RSD. In the
event of an emergency, the external switch will be enabled to stop the receiver, then disconnect
the PV modules.
RSD