Goodwe ET Series User manual

ET SERIES USER MANUAL
Hybrid inverter

1. INTRODUCTION
The GoodWe ET inverter series, also known as hybrid or bidireconal solar inverters, are designed to
manage energy in solar systems that use PV, baeries, loads, and grid systems. With the help of these
inverters, the energy generated by PV systems can be opmized for household loads. Any excess
energy is stored in the baery, and once the baery is fully charged, the excess energy is exported to
the grid if it is allowed. If the PV panels are not producing and the baery is charged, the energy for
consumpon in the house is supplied from the baery. Aer the baery is discharged, the energy is
supplied from the distribuon network to meet the household energy requirements.
Note:
The introducon describes the general operaon condions of an
ET system. The operang mode can be adjusted in the PV Master
App including the system layout. The general operang modes for
the ET system are shown below:
1.1 Introducon to operang modes
The operang mode of the ET series inverter can be set according to the required condions.
Below are examples of the inverter's basic operang modes.
Mode I
When PV is produced, consumpon in the house is
supported rst. Excess energy is stored in the
baery, aer the baery is charged the excess
energy goes to the grid. (If the inverter is enabled
for surplus to the grid)
Mode 2
When the PV is not produced, the energy for
consumpon in the house is supplied from the
baery, and in case of higher consumpon, from
the grid
Mode 3
In the event of a distribuon network failure, only the
„Back-Up“ output (backed-up appliances) will remain
acve. This output is powered by PV and baery.
Mode 4
Baery charging and discharging can be set using a
schedule. These me schedules are set up using the
PV Master app.

1.2 SAFETY AND WARNINGS
The ET inverter series from Jiangsu GoodWe Power Supply Technology Co., Ltd. (also called
GoodWe) strictly complies with related safety rules for product design and tesng. Please read
and follow all of the instrucons and cauons appearing on the inverter or in the User Manual
during installaon, operaon, and maintenance, as any improper operaon might cause personal
injury or property damage.
Symbol explanaon
Caution!
Failure to observe any warnings contained in this manual may result in injury.
The danger of an electric shock!
Danger - hot surface!
The components of the product can be recycled.
This side up! This package must always be transported, handled and stored in
such a way that the arrows always point upwards.
No more than six identical packages are to be stacked on top of each other.
The product shall not be disposed of as household waste.
The package/product must be handled carefully and should never be tipped
over or slung.
Refer to the operating instructions.
Keep dry! The package must be protected from excessive humidity and must be
stored under cover.
This symbol indicates that you should wait at least 5 minutes after disconnecting
the inverter from the utility grid and from the PV panel before touching any
inner parts.
CE mark

Safety warnings
Any installation or operations on the inverter must be performed by qualified electricians in compliance with
standards, wiring rules, and the requirements of local grid authorities or companies (such as AS 4777 and
AS/NZS 3000 in Australia).
Never insert or remove the AC or DC connecons when the inverter is running.
Before any manipulaon in the inverter connecon area, it is necessary to turn o all power from the DC and
AC sides. Aer that, you must wait 5 minutes before starng work with the inverter.
The temperature of the inverter surface can exceed 60°C during operaon. Make sure it has cooled down
before touching it and make sure the inverter is out of reach of children.
Do not open the inverter cover or change any components without the manufacturer's authorizaon.
Otherwise, the warranty for the inverter will be invalid.
The usage and operaon of the inverter must follow the instrucons in this User Manual. Otherwise, the
protecon design might be impaired and the warranty for the inverter will be invalid.
Appropriate methods must be adopted to protect the inverter from stac electricity damage. Any damage
caused by stac electricity is not warranted by the manufacturer.
The negave (PV-) input of the inverter is not grounded. It is prohibited to connect the PV- or BAT- inputs to
the ground.
PV panels shall comply with class A according to IEC61730. The total idle voltage of the string, must not exceed
the permied maximum DC input voltage of the inverter. Exceeding the maximum permied DC voltage will
cause the changer to be destroyed and the warranty to be lost.
When exposed to sunlight, the PV array generates dangerous high DC voltages. Please operate the inverter
according to these instrucons, or danger to life may result.
The inverter has a built-in RCMU protector that monitors leakage currents on the DC side up to 6mA, when
using an external protector, use an RCD/A type protector
In Australia, the output of the backup side in the switch box should be labeled "Main Switch UPS Supply". The
output on the normal load side in the switch box should be labeled "Main Switch Inverter Supply".

1.3 Inverter Overview
LED INDICATORS
INDICATOR
STATUS
EXPLANATION
SYSTEM
ON = system is ready
BLINK = system is starng up
OFF = system is not operang
BACKUP
ON = backup is ready/power available
OFF = backup is o/on power available
BATTERY
ON = baery is charging
BLINK 1 = baery discharging
BLINK 2 = baery is low/soc is low
OFF = baery is disconnected/not acve
GRID
ON = the grid is acve
BLINK= the grid is acve but is not connected
OFF = the grid is not acve
ENERGY
ON = consuming energy from the grid/purchasing
BLINK 1 = supplying energy from the grid/zeroing
BLINK 2 = supplying energy to the grid/selling
OFF = the grid is not connected or the system is not operang
COM
ON = BMS and meter communicaons are OK
BLINK 1 = meter communicaons are OK, BMS communicaons
have failed
BLINK 2 = BMS communicaons are OK, meter communicaons
have failed
OFF = BMS and meter communicaons have both failed
WI-FI
ON = WiFi is connected/acve
BLINK 1 = wi is reseng
BLINK 2 = wi is not connected to the router
BLINK 4 = wi server problem
OFF = wi is not acve
FAULT
ON = A fault has occurred
BLINK 1 = overload of backup output/reduce load
BLINK 4 = CT wiring fault
OFF = no fault

Wi-Fi reset
LED control lights
DC switch*
Wi-Fi module
Baery connecon
connectors
On-Grid port
Back Up port
For smart meter
Communicaon cable for Smart meter
For baery
Communicaon cable for BMS conneco
PV connecon
connectors **
Note
* : Only GW 5K/8K/10K-ET have DC switch
**: Only GW8KLC and GW10KL-ET has two pairs of connectors on PV2 output

2. INSTALLATION
2.1 Installaons that are not allowed
Please avoid the following installaon types, which will damage the system or the inverter.
2.2 PACKAGE CONTENTS
When receiving the inverter, check that the components shown below are not missing or damaged.
Load
DO NOT CONNECT IN PARALLEL
PV
PV
DO NOT CONNECT ONE STRING TO TWO OR MORE INVERTERS
DO NOT CONNECT ONE SMART METER TO MORE INVERTERS AND DO
NOT CONNECT VARIOUS MEASURING RINGS ON THE CABLE
BATTERY
BATTERY
DO NOT CONNECT ONE BATTERY TO MORE INVERTERS
GENERATOR
INCOMPATIBLE
BATTERY
DO NOT CONNECT THE BACK-UP OUTPUT TO
THE GRID
DO NOT CONNECT THE AC GENERATOR TO THE
ON-GRID INPUT OR BACK-UP OUTPUT
DO NOT CONNECT INCOMPATIBLE BATTERIES TO
THE INVERTER’S BATTERY OUTPUT
Inverter
Wall holder
Smart Meter with
three CT
Posive PV
connector 2 or 3pcs
Negave PV
connector 2 or 3pcs
Posive BAT
connector
Negave BAT
connector
PE terminal
4x dowels with
screws
AC port cover
6x screw with a
at head
12x pin
terminal
User manual
Quick user manual

2.3 MOUNTING
2.3.1 Select mounng locaon
For inverter protecon and convenient maintenance, the mounng locaon for the inverter should
be selected carefully based on the following rules:
No part of the system should not block the switch or breaker from disconnecng the inverter from
DC and AC power.
Rule 1. The inverter should be installed on a solid surface that is suitable for the inverter's
dimensions and weight.
Rule 2. The inverter should be installed vercally or on a slope with a maximum value of 15°.
Rule 3. The ambient temperature should be lower than 45°C. 06
Rule 4. The inverter installation should be protected by shelter from direct sunlight or bad weather
such as snow, rain, lightning, etc.
Rule 5. The inverter should be installed at eye level.
Rule 6. The product label on the inverter should be visible after installation.
Rule 7. Leave enough space around the inverter according to the figure below.
Do not install the inverter near ammable or explosive substances or near equipment with a strong
electric magnec eld. [1]
Keep away from
sunlight
Keep away from
rain
Keep away from
snow
Direct sunlight
Rain
Snow
Picture 2

2.3.2 MOUNTING
REMEMBER THE INVERTER IS HEAVY! BE CAREFUL WHEN REMOVING IT FROM THE BOX.[2]
The inverter is suitable for mounting on concrete or other non-combustible surfaces only.
Step 1
-Please use the mounng bracket as a template to drill 6 holes in the correct
posions (10mm in diameter and 80mm in depth). (picture 4)
-Use the expansion bolts in the accessory box and ghtly aach the mounng
bracket to the wall.
Note: The load capacity of the wall must be greater than 25kg. Otherwise, the wall
may not be able to prevent the inverter from dropping.
Step 2
Grasp the inverter on both sides of the cooler and place the inverter
on the wall bracket. (picture 5).
NOTE: Make sure the inverter is properly seated on the wall
bracket.
Step 3
Aach the grounding wire to the grounding point of the inverter.
Step 4
The inverter can be locked. (the lock is not part of the package).
Wall holder
Dowel
Screw

2.4 WIRING
2.4.1 PV CONNECTION
Before connecng the PV panels/strings to the changer, check the following points:
•The total shortcircuit current of the panels is no higher than the max input DC of the
inverter. (for GW8KL-ET and GW10KL-ET, the PV2 has two pairs of connectors, allowing
two strings to be connected with a total short circuit current not exceeding 22A).
•The insulaon resistance of the PV panels against the ground must be more than 33.33k,
otherwise, there is a risk of electric shock.
•The PV string should not be aached to the ground.
•Use the aached connectors to connect the PV strings. (THE BAT connector is similar to
the PV connector, check the connectors thoroughly before connecng)
NOTE: Accessories include either MC4 or QC4.10 connectors or Amphenol, the detailed connecon is shown
below.
Step 1
Note:
-Use the PV connectors included in the package
-Use a PV cable with a cross-secon of 2.5-4 mm2
Step 2
Connect the PV cable with the PV connector
Note:
-The PV cable must be ghtly pressed with the connector
-For the Amphenol connector, use a liming clip, it must not be pressed. There must be a click when
the connector is assembled
Step 3
Pull the cap onto the connector
Note:
-You should hear a click when the connector is inserted
The polarity of the PV input must not be reversed, otherwise, there is a risk of destroying the inverter [3]
For GW8KL-ET and GW10KL-ET, if the PV array you connect to the PV2 input has a short-circuit current
higher than 15A, divide the PV array into two strings and connect two pairs of connectors to the PV2
input.