Goodwe ETC Series User manual

User Manual
V1.0-2021-10-15
Hybrid Inverter
ETC Series

TABLE OF CONTENTS
01 INTRODUCTION .....................................................................01
1.1 Operation Modes Introduction ..........................................................................01
1.2 Safety & Warning................................................................................................02
1.3 Product Overview ...............................................................................................04
02 INSTALLATION INSTRUCTIONS ...............................................06
2.1 Select Mounting Location ..................................................................................06
2.2 Mounting .............................................................................................................07
2.3 Electrical Wiring Connection .............................................................................08
2.3.1 System connection diagrams ...................................................................................... 08
2.3.2 System Application ....................................................................................................... 09
2.3.3 Electrical Wiring Connection ....................................................................................... 10
2.4 Earth Fault Alarm Connection ...........................................................................16
03 Check Items Before Powering On ...........................................17
04 System Power-on ..................................................................17
05 Parameter Setup ...................................................................18
5.1 Commissioning via LCD Screen .........................................................................18
5.2 Commissioning via PV Master App ....................................................................19
06 System Power-o󽗈 ..................................................................19
07 Others ..................................................................................20
7 .1 Error Messages ...................................................................................................20
7.2 Technical Parameters ........................................................................................24
7.3 Other Test ............................................................................................................27
7.4 Quick Check List to Avoid Danger .....................................................................27

01
01 INTRODUCTION
ETC series bidirectional inverter is designed for indoor use, which could be used with or without
existing PV system to store energy using batteries.
Energy produced from the PV system will be used to optimize self-consumption, excess will be
used to charge the battery, anymore could be exported to the grid. Loads will be supported in
priority by PV system, then battery power, if more power is needed, energy will be imported from
the grid.
ETC system normally has the following operation modes based on your con󽗉guration and layout
conditions.
Note:
The introduction describes a general behavior of
ETC system. The operation mode can be adjusted
on depending on the system layout. Below are the
general operation modes for ETC system.
1.1 Operation Modes Introduction
Mode Ⅰ
Energy produced by the PV system is used
to optimize self-consumption needs. Excess
energy is used to recharge the batteries and
any additional excess energy is then exported
to the grid.
Mode Ⅱ
When there is no PV power,and the battery
is su󽗋cient, loads will be supplied with
electricity from the battery and the grid.
Mode Ⅲ
When grid power fails,the system
automatically switches to Back-Up mode. The
Back-Up load can be supported by PV and
battery.
Mode Ⅳ
The battery can be charged from the grid
and the charging time/power can be set to
various options in the PV Master App.

02
The ETC series inverter strictly complies with related safety rules for product design and testing.
Please read and follow all the instructions and cautions on the inverter or user manual during
installation, operation or maintenance, as any improper operation might cause personal or property
damage.
1.2 Safety & Warning
Symbols explantion
Caution!
Failure to observe a warning indicated in this manual may result in injury.
Danger of high voltage and electric shock!
Danger of hot surface!
Components of the product can be recycled.
This side up! The package must always be transported, handled and stored in such
a way as the arrows always point upwards.
Products should not be disposed as household waste.
Fragile - The package/product should be handled carefully and never be tipped over
or slung.
Refer to the operating instructions.
Keep dry! The package/product must be protected from excessive humidity and
must be stored under cover.
Signals danger due to electric shock and indicates the time to wait (5 minutes)
before it is safe to touch the internal parts of the inverter after it has been
disconnected from it power source.
CE Mark
C-Tick mark in Australia
5min

03
Safety warning
Any installation and operation on inverter must be performed by quali󽗉ed electricians, in compliance
with standards, wiring rules or requirements of local grid authorities or companies (like AS 4777 and
AS/NZS 3000 in Australia).
1. ProhibitinsertingandpullingtheACandDCterminalswhentheinverterisrunning.
2. Beforeanywiringconnectionorelectricaloperationoninverter,allDCandACpowermustbe
disconnectedfrominverterforatleast5minutestomakesureinverteristotallyisolatedto
avoidelectricshock.
3. Thetemperatureofinvertersurfacemightexceed60℃duringoperation,sopleasemakesure
ithascooleddownbeforetouchingit,andmakesuretheinverterisoutofreachofchildren.
4. Donotopentheinverter'scoverorchangeanycomponentswithoutmanufacturer's
authorization,otherwisethewarrantycommitmentfortheinverterwillbeinvalid.
5. Usageandoperationoftheinvertermustfollowinstructionsinthisusermanual,otherwisethe
protectiondesignmightbeimparedandwarrantycommitmentfortheinverterwillbeinvalid.
6. Appropriatemethodsmustbeadoptedtoprotectinverterfromstaticdamage.Anydamage
causedbystaticisnotwarrantedbymanufacturer.
7. PVnegative(PV-)andbatterynegative(BAT-)oninvetersideisnotgroundedasdefaultdesign.
ConnectingPV-orBAT-toEARTHarestrictlyforbidden.
8. Theinverter,withbuilt-inRCMU,willexcludepossibilityofDCresidualcurrentto6mA,thusin
thesystemanexternalRCD(typeA)canbeused(≥30mA).
9. InAustralia,theinverterinternalswitchingdoesnotmaintainneutralintegrity,whichmust
beaddressedbyexternalconnectionarrangementslikeintheO󽗈-GridSystemConnection
Diagram.
10.InAustralia,outputofback-upsideinswitchboxshouldbelabeled"MainSwitchUPSSupply",
theoutputofnormalloadsideinswitchboxshouldbelabeled"MainSwitchInverterSupply".
11.ThePVmodulesusedtoconnectedtothisinvertershallbeClassAratingcerti󽗉edaccording
toIEC61730,andthetotalopen-circuitvoltageofPVstring/arrayislowerthanthemaximum
ratedDCinputcoltageoftheinverter.AnydamagecausedbythePVover-voltageisbeyond
warranty.
12.Whenexposedtosunlight,thePVarraygeneratesdangeroushighDCvoltage,pleaseoperate
accordingtotheusermanual,oritwillresultindangertolife.

04
1.3 Product Overview
ETCseriesenergystorageinverterscanbeappliedinagrid-tiedsystem,anemergencypower
supplysystem,orahybridsystem.
(1) Monitoring Unit (EMS1000)
(3) DC-DC Conversion Module (GW50K-DCM)
(5) ON/OFF Grid Switching Module (GW100K-STS)
(7) AC Output Circuit Breaker (GRID)
(9) MPPT DC Input Circuit Breaker (MPPT1， MPPT2)
(11) Heat Dissipation Hole
(13) PV DC Input Terminal (MPPT1， MPPT2)
(15) Load Terminal (LOAD)
(17) AC Output Terminal (GRID)
(2) MPPT Module (GW50K-PVM)
(4) Power Conversion System Module
(GW50K-BTM)
(6) Battery Circuit Breaker（BAT1， BAT2)
(8) Emergency Stop Button
(10) Load Circuit Breaker (LOAD)
(12) Communication Cable Port
(14) Battery DC Terminal (BAT1， BAT2)
(16) PE Terminal
GW50K-ETC
GW100K-ETC Model
GW Brand
50K/100K Power Class
ET Three-phase Hybrid Inverter
CCabinet Style Product
GW100K-ETC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

05
1
2
3
4
5
6
7
9
8
15
11
12
13
14 16
17
10
GW50K-ETC
(1) Monitoring Unit (EMS1000)
(3) DC-DC Conversion Module (GW50K-DCM)
(5) ON/OFF Grid Switching Module (GW100K-STS)
(7) Load Circuit Breaker (LOAD)
(9) Battery Circuit Breaker（BAT)
(11) Heat Dissipation Hole
(13) PV DC Input Terminal (MPPT)
(15) Load Terminal (LOAD)
(17) AC Output Terminal (GRID)
(2) MPPT Module (GW50K-PVM)
(4) Power Conversion System Module
(GW50K-BTM)
(6) AC Output Circuit Breaker (GRID)
(8) Emergency Stop Button
(10) MPPT DC Input Circuit Breaker (MPPT)
(12) Communication Cable Port
(14) Battery DC Terminal (BAT)
(16) PE Terminal

06
02 INSTALLATION INSTRUCTIONS
2.1 Select Mounting Location
For inverter's protection and convenient maintenance, mounting location for inverter should be
selected carefully based on the following rules:
Any part of this system shouldn't block the switch and breaker from disconnecting the inverter from
DC and AC power.
Rule 1. Inverter should be installed on a solid surface, where is suitable for inverter's dimensions
and weight.
Rule 2. Inverter should be installed horizontally.
Rule 3. Ambient temperature should be lower than 45°C. (High ambient temperature will cause
power derating of inverter.)
Rule 4. The inverter should be installed indoors.
Rule 5. Bearing capacity of the 󽗊oor must be higher than 300kg/m2.
Rule 6. Inverter should be installed at eye level for convenient maintenance.
Rule 7. Product label on inverter should be clearly visible after installation.
Rule 8. Leave enough space around the inverter according to the below 󽗉gure.
Rule 9. Suitable for mounting on concrete or other non-combustible surfaces only
Dimensions
1350mm
585mm 750mm
Front Back

07
2.2 Mounting
The inverter is suitable for mounting on concrete or other non-combustible surface only.
Inverter cannot be installed near 󽗊ammable, explosive or strong electro-magnetic
equipment.
Space Requirements Lifting the Cabinet Fixing the Cabinet
≥300mm
≥500mm
≥500mm
≥300mm
≥300mm

08
2.3 Electrical Wiring Connection
2.3.1 System connection diagrams
Meter
L1
L2
L3
N
PE
L1
L2
L3
N
PE
L1
L2
L3
N
L1
L2
L3
N
PE
Distribution box
On-Grid
Back-Up
RCD
Normal Loads
L1 L2 L3 N PE
PE
Grid
Hybrid Inverter
or
N
PE
Back-Up
Loads
Smart
Meter
E-BARE-BAR
RCD
Battery
BMS
PV String
AccordingtoAustralianregulations,theNwiresontheGRIDsideandBACK-UPsideshouldbe
connectedtooneterminalblock.Otherwise,theBACK-UPfunctionmayfail.
ThefollowingdiagramshowsthewiringconnectionwhentheNwireandthePECableareconnectedtothe
sameterminalblock.
EquipmentinstalledinAustralia,NewZealand,SouthAfrica,andsoonshouldfollowthisdiagram.All
installationsandwiringconnectionsshouldmeetlocallawsandregulations.
ThefollowingdiagramshowsthewiringconnectionwhentheNwireandthePECableareconnected
separately.
EquipmentinstalledinChina,Germany,CzechRepublic,Italy,andsoonshouldfollowthisdiagram.All
installationsandwiringconnectionsshouldmeetlocallawsandregulations.
WhentheinverterisworkinginBACK-UPmode,theNwireandPEcablewillbeconnected
inoneinternalrelay.Thisrelaywillbedisconnectedwhentheinverterisworkingingrid-
tiedmode.
Distribution box
On-Grid
Back-Up
Battery
Meter
L1
L2
L3
N
E-N
Link
Smart
Meter
RCD
N-BAR
Hybrid Inverter
E-BAR
BMS
E-BAR
RCD
orPE
L1
L2
L3
N
PE
L1
L2
L3
N
PE
L1
L2
L3
N
PE
L1 L2 L3 N PE
Back-Up
Loads
Normal Loads
Grid
PV String
DisconnectthisterminalwhentheN
wireandthePEcableareconnected
tothesameterminalblock.

09
2.3.2 System Application
B A
BAT+
BAT-
GM3000C
L1
L2
L3
N
PE
Grid
GRID
MPPT
LOAD
BAT
LAN
S1 S2
P1 P2
L1 L2 L3
N
PE
485_1
A
B
A B
RS485
485_2
AB
RS485
ETH
RJ45
SEMS
1 2 3 4 5 6 7 8
3
2
14
Cable
External CT
Loads
Router
AC Breaker (GRID)
GW50K-ETC：≥ 125A
GW100K-ETC：≥ 250A
AC Breaker (BACK-UP)
GW50K-ETC：≥ 125A
GW100K-ETC：≥ 250A
AC Breaker
(House Loads)
BACK-UP
Load
Battery
DC Breaker
≥ 125A
PV String
Main Meter
No. Type Speci󽗉cation
1
DC Input Cable (MPPT)
DC Power Cable
(BATTERY)
Two single-core outdoor copper-core cables or aluminum cables
are needed per MPPT; （PV+ and PV-：M8 OT Terminals）
Copper Cable Conductor Cross Sectional Area: 25mm2 - 50mm2
Aluminum Cable Conductor Cross Sectional Area: 70mm2
2 PE Cable
Single-core Outdoor Copper-core Cable M8 OT Terminal
Conductor Cross Sectional Area: 16 mm2 - 25 mm2
3
AC Output Cable
(GRID)/Load Output
Cable (LOAD)
Single-coreorMulti-coreOutdoorCopper-coreCableor
AluminumCable:(L1,L2,L3,N,andPE:M8OTTerminals)
GW50K-ETC
• CopperCableConductorCrossSectionalArea(S):25mm2
-50mm2；
• AluminumCableConductorCrossSectionalArea≥70mm2
GW100K-ETC
• CopperCableConductorCrossSectionalArea(S):35mm2
-50mm2；
• AluminumCableConductorCrossSectionalArea≥95mm2
4
RS485 Communication
Cable (RS485)
Outdoor Shielded Twisted Pair;
Conductor Cross Sectional Area: 0.25 mm2 - 1 mm2

10
• Before connecting AC, DC and communication cables, connect the ground
terminals to the protective ground point to ensure reliable grounding of
the inverter.
• Please be careful about any electric shock or chemical hazard.
• Before connecting PV Panels/Strings,please make sure requirements are
followed as below:
1. The total short-circuit of PV string must not exceed inverter's max DC
current.
2. The minimum isolation resistance to ground of the PV string must
exceed 100KΩ in case of any shock hazard.
3. PV string could not connect to earth/grounding conductor.
• Before connecting battery,please make sure battery switch is o󽗈 and
battery nominal voltage meet ETC series'speci󽗉cation before connecting
batteryto inverter and make sure inverter is isolated form PV and AC
power.
• The polarity of PV Strings/battery or on the inverter cannot be connected
reversedly,otherwise inverter could be damaged.
• Before connecting AC cable,please make sure inverter is totally isolation
form any DC/PV or AC power.
• For battery without build-in DC breaker, make sure there is an external DC
breaker connected.
• Neutral cable shall be blue, line cable shall be black or brown (preferred)
and protective earth cable shall be yellow-green.
• For AC cables, PE cable shall be longer than N&L cables, so in case that the
AC cable slips or is taken out, the protecting earth conductor will be the
last to take the strain.
• Make sure that the battery switch is o󽗈 and battery nominal voltage meets
the inverter's speci󽗉cation before connecting battery to inverter. Make
sure inverter is totally isolated from AC power.
• Please follow the requirements and steps below strictly. Using improper
wire may cause bad contact and high impedance, which is dangerous to
the system.
2.3.3 Electrical Wiring Connection
Opening the Wiring Chamber Door
2
1

11
Connecting the PE Cable
Connecting the AC Output Cable, Load Output Cable, Battery Cable, and PV Input Cable
No. Connection
Port Cable Type Requirements
1. GRID Connecting the AC Output Cable L1/L2/L3/N/PE: M8 Screws, tightening
torque: 8 - 10 N·m
2. LOAD Connecting the LOAD Output
Cable
3. BATTERY Connecting the DC Battery Cable BAT+/BAT-: M8 Screws, tightening
torque: 8 - 10 N·m
4. MPPT Connecting the PV Input Cable PV+/PV-: M8 Screws, tightening
torque: 8 - 10 N·m
• ThePVstringshaveaDChighvoltageinthesun,andthefollowing
operationsmustbeperformedbytheengineerswithelectrical
installationquali󽗉cationsandwearingcertainsafetyprotectiontools.
• DisconnectallDCandACcircuitbreakersbeforeelectricalconnections.
Takesomeactionstoavoidthecircuitbreakersfromreconnecting.
• Ensurethatallcablesarefreeofvoltagebeforeelectricalconnection.
• Checktheimpedancebetweenthepositive/negativeofthebatteryand
thegroundbeforeconnectingthebatteryandtheinverter.Theimpedance
shouldbehigherthan1MΩ.
• Checktheimpedancebetweenthepositive/negativeterminalsofthePV
stringandthegroundbeforeconnectingthePVstringandtheinverter.
Theimpedanceshouldbehigherthan1MΩ.
WARNING!
L=L1+(1~2)mm L1
1
23
M8
8-10N·m
4

12
• TheACoutputcable,loadoutputcable,DC input cable, andbatterycable
areconnectedtotheequipmentinthesameway.TaketheACoutput
cableconnectionasanexampletoexplaintheconnectionstepsbelow.
• Makesurethefollowingcablesareconnectedcorrectlytoavoid
equipmentdamage.
1. Positiveandnegativeterminalsofthebatteryareconnectedcorrectly.
2. PositiveandnegativeterminalsofthePVstringareconnected
correctly.
3. ACcableL1,L2,L3areconnectedinthecorrectsequence.
4. DonotmixPEcableandNwire.
NOTE
1
23
120-150mm
L=L1+(1~2)mm L1
M8
8-10N·m
4

13
L
L + (2 - 3 mm)
485_1
Communication Line Connections
Connecting to the Terminal Block
DRED
NO.
Function
1
DRM1/5
2
DRM2/6
3
DRM3/7
4
DRM4/8
5
REFGEN
6
COM/DRMO
DRY_OUT CAN_2 485_2 485_3 485_1 DRED DRY_IN1DRY_IN2DRY_IN3DRY_IN4 LAN
HLABABAB
• The wiring methods for connecting communication lines through the
terminal block are the same, and this document uses the RS485_1 port
connection as an example to illustrate the procedures.
• The DRY_OUT, CAN_2, RS485_3, DRY_IN1, DRY_IN2, DRY_IN3 and DRY_
IN4 ports are reserved.
DRED is used for installations in Australia and New Zealand (also used as remote shutdown function
in European countries), in compliance with Australia and New Zealand safety requirements(Or
European countries). The inverter integrates the DRED control logic and provides the DRED interface.
DRED is not provided by the manufacturer.
Detailed connection of DRED / Remote shutdown is shown below:
1. Put DRED cable through the plate.
2. Connect DRED cable on the 6-pin terminal.The function
of each connection position is shown as below.
No. 1 2 3 4 5 6
Function DRM1/5 DRM2/6 DRM3/7 DRM4/8 REFGEN COM / DRMO

14
ConnectingtotheRJ45Terminal
PIN Color
1. Orange&White
2. Orange
3. Green&White
4. Blue
5. Blue&White
6. Green
7. Brown&White
8. Brown
LAN
1 2 3 4 5 6 7 8
Compartment Door
Installthecompartmentdoorafterthecableconnectioniscompleted.Cutaholeusingautility
knife,asthecableinletholeisnotreserved.Theholesizeshouldbedecidedaccordingtothe
cablediametertoavoidinsectsorratsthatmaydamagetheequipment.
D:48mm D:31.4mm D:22mm D:15.2mm

15
Accepted loads as below:
• Inductive load: The maximum starting power of the load should be less than the inverter power.
• Capacitive load: Total power <= 0.6 x nominal power of model. (Any load with high startup
current at start-up is not accepted.)
• For complicated application, please contact after-sales.
Note:
For convenient maintenance, please install a "4Pole3Throw" on back-up and on-grid
side. Then it is adjustable to support load by back-up or by grid or default settings.
1. Back-up load is supplied from back-up
side.
2. Back-up load is isolated.
3. Back-up load is supplied from grid side.
Back-Up
SP3T
1
2
3
On-Grid
Grid
Load
Special adjustable setting
The inverter has a 󽗉eld where the user could set functions, such as trip points, trip time, time of
reconnection, active and invalid of QU curve and PU curve. Fuctions can be adjusted through special
software. If insterested, please contact with our department of server.
Declaration for back-up function
The back-up output of ETC hybrid inverters have over load ability.
And the inverter has self-protection derating at high ambient temperature.
Under normal circumstances, the back-up switching time is less than 10 ms (the minimal condition
to be considered as the UPS level). However, some external factors may cause the system to fail
on Back-Up mode. As such, we recommend the users to be aware of conditions and follow the
instructions as below:
• Do not connect loads if they are dependent on a stable energy supply for a reliable operation
• Do not connect the loads which may in total exceed the maximum back-up capacity
• Try to avoid those loads which may create very high start-up current surges such as inverter
air-conditioner, high-power pump etc.
• Due to the condition of the battery itself, battery current might be limited by some factors
including but not limited to the temperature, weather etc.

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Anti-reverse function connection
If ETC system (connected with grid-tied inverters) requires anti-reverse function, it is operable but
please note:
1. This diagram is only for installation where there is exporting power limit function requirement.
2. For anti-reverse function, it can be set on Screen→Settings→Operation Mode→Self-Use→Power
limit.
3. This diagram will only applies if grid-tied inverter has anti-reverse function build-in. And the
power limitation value can be set on grid-tied inverter.
4. When using anti-reverse function, it would buy about 500W from the grid.
ETC series inverter complies with IEC 62109-2 13.9. Fault indicator LED on the inverter cover will light
up and the system will email the fault information to customer.
2.4 Earth Fault Alarm Connection
Declaration for back-up overload protection
Inverter will restart itself if overload protection triggers. The preparation time for restarting will be
longer and longer (max one hour) if overload protection repeats. Take following steps to restart
inverter immediately.
• Decrease back-up load power within max limitation
Smart Meter & CT Connection
• Make sure AC cable is totally isolated from AC power before connecting
Smart Meter & CT.
• For the detailed operation steps of connecting CT, please refer to
"GM3000C Electric Meter Quick Installation Instructions".

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Indicator Status Description
Power Supply
ON=INVERTER POWER-ON
OFF=INVERTER POWER-OFF
Operation
ON=SYSTEM IS READY
BLINK=SYSTEM IS STARTING UP
OFF=SYSTEM IS NOT OPEATING
Warning
FAULT HAS OCCUREED
BLINK=OVERLOAD OF BACK-UP OUTPUT/REDUCE LOAD
OFF=NO FAULT
03 Check Items Before Powering On
04 System Power-on
No. Check Item
1. The inverter is 󽗉rmly installed.
2. The PE cable, power cable, and communication cable are connected correctly
and securely.
3. Cable ties are routed properly and evenly, tied tightly and no burrs.
4. Switches of the upstream and downstream should be all o󽗈.
5. The inverter is installed in a proper place where is clean and tidy.
6. The compartment door is installed.
1. MeasuretheDC input cable andbatterycableusingthemultimetertoavoidreversepolarity
connection.Also,theDCvoltageofthebatteryandtheDCvoltageofthePVstringshouldbe
underthepermissiblerange.
2. TurnontheACswitchbetweentheinverterandtheutilitygrid.
3. TurnontheDCswitchbetweentheinverterandthebattery.
4. TurnontheACswitchbetweentheinverterandtheloads.
5. TurnontheMPPTswitchbetweentheinverterandthePVstring.
6. ObservetheindicatorandLCDtochecktheinverter'sworkingstatus.

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Settings
DeviceInfo
CommunicateInfo
Maintenance
Menu
2021/07/2513:30
OperationMode
SafetyCode
Battery
OperationParam
Settings
2021/07/2513:30
2021/07/2513:30 11
0.00kw 0.00kw
0.00kw0.00kw
Wait
LAN
05 Parameter Setup
• After the inverter is powered on, the LCD screen of the monitoring unit
automatically turns on and enters the home page.
• Access to the settings page requires a password, please contact GOODWE
Service Center to obtain the password.
1. Press Enter on the homepage to access the main menu page.
2. Select "Settings" and press Enter to enter the password, then press and hold Enter to access the
settings page.
3. Select "Safety Code" and press and hold Enter to complete the parameter settings according to
the local safety code settings.
4. Select "Battery" and press and hold Enter to complete the parameter settings according to the
battery type connected to the inverter.
5. Select "Operation Param" and press Enter to access the operating parameters page, then select
"CT Ratio", set the CT ratio according to the actual connected CT speci󽗉cations, and press and
hold Enter to complete the parameter settings.
6. Exit to the main menu page and select "Communicate Info" to check if the electric meter, BMS
and network communication status are normal.
Homepage Main Menu
Settings Page
Displayoperationlogic:Refertoappendixfor
details.
5.1 Commissioning via LCD Screen