Growatt Growatt 4200 MTL User manual

GROWATT NEW ENERGY CO., LTD
No.12 Building, Xicheng Industrial
Zone, Bao’an District, Shenzhen, P. R.China
+ 86 755 2747 1900
+ 86 755 2749 1460
[e-mail]
www.ginverter.com
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Installation
&
Operation Manual
Growatt 3600MTL
Growatt 4200MTL
Growatt 5000MTL
GR - UM - 002 - 02

Notes on this manual
1.1 Validity
1.2 Target Group
1.3 Safety
Growatt MTL Inverter
2.1 Overview
Unpacking and inspection
Installation
4.1 Safety instructions
4.2 Selecting the INSTALLATION location
4.3 Fixed the mounting on the wall
4.4 Fixed the inverter on the wall
4.5 Check Ivewrter installation Status
Electrical Connection
5.1 System Diagram with Inverter
Electrical connection
5.2 Safety
5.3 Connecting to the grid (AC utility)
5.4 Connect to PV Panel (DC input)
5.5 Country Selecting
Directory
1
2
3
4
5
2.2 Identifying model and basic datasheet
5.6 Commissioning

The Growatt is a PV Inverter that converts DC Current from PV generator into AC
current. The Growatt is suitable for mounting indoors and outdoors.
Notes on this manual 1
1.1 Validity
1.2 Target Group
1.3 Safety
You can use the AC current gernerated as follows:
Appropriate Usage
This manual describes the assembly, installation, commissioning and maintenance of
the following Growatt Inverters:
Growatt 3600 MTL
Growatt 4200 MTL
Growatt 5000 MTL
This manual is for qualified personnel. Qualified personnel have received training
and have demonstrated skills and knowledge in the construction and operation of
this device. Qualified personnel are trained to deal with the dangers and hazards
involved in installing electric devices.
Contact
Display 6.1 LCD display
6.2 LCD control
6.3 Setting the LCD display
Modes of Operation
7.1 Normal mode
7.2 Fault mode
7.3 Shutdown mode
Inverter Status
Communitions
9.1 Communications software
instructions
9.2 Monitor
Trouble Shooting
System Fault
Inverter Failure
Specifications
Growatt Factory
warranty
Warranty conditions
6
7
8
9
10
11
12
13
14
15
16
This manual does not cover any details concerning equipment connected to the
Growatt MTL ( e.g. PV modules). Information concerning the connected equipment
is available from the manufacturer of the equipment.
Additional information
Find further information on special topics in the download area at www.ginverter.com
1

Growatt MTL Inverter 2
2.1 Overview
2.2 Identifying model and basic datasheet
You can identify the pv inverter by the type label. It is on the left side of the enclosure.
The type of product (Type/Model).
Device-specific characteristics.
Certificates and approvals.
House grid:
Energy flows into the house grid. The consumers connected, for example, household
devices or lighting, consume the energy. The energy left over is fed into the public
grid. When the Growatt is not gernerating any energy, e.g., at night, the consumers
which are connected are supplied by the public grid.
The Growatt does not have its own energy meter. When energy is fed into the public
grid, the energy meter spins backwards.
Public grid
Energy is fed directly into the public grid. The Growatt is connected to a separate
energy meter. The energy produced is compensated at a rate depending on the
electric power company.
Stand-alone grid:
The Growatt is connected to a stand-alone grid. The energy generated is consumed
directly on site, surplus energy can be stored in batteries.
DC and AC Switch
Separate the Growatt securely from the grid and the PV generators using DC and AC
Switch. You must provide an AC circuit breaker. If Growatt DC Switch is included in
the delivery of the Growatt, it must be used for operating the inverter.
Grounding the PV modules
The Growatt 3600 MTL, 4200MTL and 5000MTL is a transformerless inverter. That is
why it has no galvanic separation. Do not ground the DC circuits of the PV modules
connected to the Growatt. Only ground the mounting frame of the PV modules.
If you connect grounded modules to the Growatt, the error message "PV ISO Low".
Info
of the local utility company before
: Policies vary from one utility company to another. Consult with a representative
Based on transformer less technology,IEC61730 demand matching class A PV
module. we normally recommend Monocrystalline silicon and polycrystalline silicon
module. But it can also be applied to some thin-film technology which claims
workable with transformer less inverter.
2 3

INSTALLATION 4
4.1 Safety instructions
A
B
C
D
E
F
G
Do not remove the casing. Inverter contains no user serviceable
parts. Refer servicing to qualified service personnel. All wiring
and electrical installation should be conducted by a qualified
service personnel and must meet national requirements of AS4777
or VDE0126-1-1.
Both AC and DC voltage sources are terminated inside the PV
Inverter. Please disconnect these circuits before servicing.
When a photovoltaic panel is exposed to light, it generates a DC
voltage. When connected to this equipment, a photovoltaic panel
will charge the DC link capacitors.
Energy stored in this equipment’s DC link capacitors presents a risk
of electric shock. Even after the unit is disconnected from the grid
and photovoltaic panels, high voltages may still exist inside the
PV-Inverter. Do not remove the casing until at least 5 minutes after
disconnecting all power sources.
This unit is designed to feed power to the public power grid
(utility) only. Do not connect this unit to an AC source or
generator. Connecting Inverter to external devices could result in
serious damage to your equipment.
Carefully remove the unit from its packaging and inspect for
external damage. If you find any imperfections, please contact
your local dealer.
Although designed to meet all safety requirements, some parts
and surfaces of Inverter are still hot during operation. To reduce
the risk of injury, do not touch the heat sink at the back of the PV-
Inverter or nearby surfaces while Inverter is operating.
Item
A
B
C
D
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H
Name
solar inverter
Mounting frame
Safety-lock screws
Mounting screws
Mounting frame screws sleeve
Monitor software(disk)
manual
Bluetooth
Quantity
1
1
2
4
4
1(Optional)
1
1(Optional)
3 Unpacking and inspection
After opening the package, please check the contents of the box.
It should contain the following:
4 5

4.3 Fixed the mounting on the wall
Inverter requires adequate cooling space. Allow at least 20cm space
above and below the inverte.
Using the mounting frame as a template, drill 4 holes as illustrated in
image.
Fix the mounting frame as the figure shows. Do not make the screws to be
flush to the wall.Instead, leave 2 to 4mm exposed
A
A
B
B
C
4.4 Fixed the inverter on the wall
Hang the inverter on the mounting frame.
Insert safety-lock screws to the bottom leg to secure the inverter.
4.5 Check Inverter Installation Status
A
B
C
D
4.2 Selecting the INSTALLATION location
The installation method and mounting location must be suitable for the
weight and dimensions of the inverter. Select a wall or solid vertical
surface that can support the PV-Inverter.
Mount on a solid surface , The mounting location must be accessible at all
times.
Vertical installation or tilted backwards by max. 15°.
The connection area must point downwards.
Do not install horizontally.
A
B
C
D
E
Check the upper straps of PV-Inverter and ensure it fits on to the bracket.
Check the secure mounting of the PV-Inverter by trying to raise it from the
bottom.The PV-Inverter should remain firmly attached.
Select the installation location so that the status display can be easily
viewed.
Choose a strong mounting wall to prevent vibrations while inverter is
operating.
67

5.2 Safety
The PV Inverter must be connected to the AC ground from the utility via the Ground
Terminal (PE)
5.3 Connecting to the grid (AC utility)
cable requirements
C
D
A
B
Measure grid (utility) voltage
and frequency. It should be
230VAC , 50Hz and single
phase.
Open the breaker or fuse
between PV Inverter and
utility.
Sc r e w t o r si o na l f o rc e i s
8kg/cm.
5 Electrical Connection
5.1 System Diagram with Inverter Electrical connection
PV Panel: Provide DC power to inverter.
Converts DC (Direct Current) power from PV panel(s) to AC (Alternating
Current) power. Because Inverter is grid-connected it controls the current
amplitude according to the PV Panel power supply. Inverter always tries to
convert the maximum power from your PV panel(s).
Connection system: This “interface” between Utility and PV-Inverter may
consist of electrical breaker, fuse and connecting terminals. To comply
with local safety standards and codes, the connection system should be
designed and implemented by a qualified technician.
Utility: Referred to as “grid” in this manual, is the way your electric power
company provides power to your place. Please note that Inverter can only
be connected to low-voltage systems(namely,230VAC,50Hz).
A
B
C
D
Position Description
A
B
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F
PV modules
DC load circuit breaker
Growatt PV Inverter
AC load circuit breaker
Energy meter
Utility grid
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5.5 Country Selecting
Model _(mm) Area(mm²) AWG no.
3600MTL
4200MTL
5000MTL
_2.05
_2.59
_2.59
3.332
5.260
5.260
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10
10
Model _(mm) Area(mm²) AWG no.
3600MTL
4200MTL
5000MTL
_2.05
_2.59
_2.59
3.332
5.260
5.260
12
10
10
5.4 Connect to PV Panel (DC input)
Under any condition! Make sure the maximum open circuit voltage (Voc)
of each PV string is less than 600VDC.The length of input wire must be
less than 30m.
Use MC (Multi-contact) connectors for PV array terminals.
Connect the positive and negative terminals from the PV panel to positive
(+) terminals and negative (-) terminals on the PV-Inverter. Each DC
terminal on Inverter can withstand 15Adc for 5000MTL, 15Adc for
4200MTL,10Adc for 3600MTL.
Before connecting PV panels to DC terminals, please make sure the
polarity is correct . Incorrect polarity connection could permanently
damage the unit. Check short-circuit current of the PV string. The total
short-circuit current of the PV string should be less than the inverter’s
maximum DC current.
High voltages exist when the PV panel is exposed to the sun. To reduce
risk of electric shock, avoid touching live components and treat
connection terminals carefully.
cable requirements
A
B
C
D
E
F
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When the PV panels are connected and their output voltage is greater than 100Vdc
but the AC grid is not yet connected, inverter will start up automatically. If it is the
first time to power on the inverter after installation, you may need to select a specific
country* .Otherwise, the interface will stay at the ‘Please Select’ interface all the
time. There are eleven options to select, as the list below.
*If you have ordered the inverter with specific country settings, the parameters have been preset in factory
and you don't need to operate this step any more.

Country/Regulation Name options
VDE0126-1-1
Germany
UK_G83
Italy
France
Denmark
Belgium
Spain
Greece
Turkey
Hungary
// 0
// 1
// 2
// 3
// 4
// 5
// 6
// 7
// 8
// 9
// 10
Note: If the country you want to select is not in the above list, please directly select
VDE0126-1-1.
Please finish the country selecting according to the following steps:
The LCD will quickly switch to and stay at the ‘Please select’ interface
after power on, as Fig 5-5-1.
A
Single knock on the LCD, countries will vary from one to another along
the above list order. Fig 5-5-2 acts as an example, and Germany is the
second selection.
B
Fig 5-5-1
Fig 5-5-2
When you need to select any of these countries, you can Double knock to
enter the next interface. Here we select Italy as an example, as Fig 5-5-3.
C
Fig 5-5-3
When the country arrives at Italy, Double knock to enter the two options
‘YES’ and ‘NO’, and the cursor stays at ‘NO’ in default, as Fig 5-5-4.
D
Fig 5-5-4
E
Fig 5-5-5
Single knock to select ‘YES’, as Fig 5-5-5.
FDouble knock to confirm your selection, LCD will display ‘Select OK’ with
the country name in the below, as Fig 5-5-6.
Note: if you still single knock at the interface as Fig 5-5-5, the cursor will
go to ‘NO’ again as Fig 5-5-4, then if you double knock, the display will
switch to the interface as Fig 5-5-3.
Fig 5-5-6
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G
Note: If you have selected and confirmed an unwanted country
neglectful, please contact Growatt for specific software to clear and reset
again.
When the selection is successful, the inverter will reboot automatically.
5.6 Commissioning
After the inverter reboot, LCD will produce the following messages in order:
‘Ser NO: xxx’->’xxxxx’->’FW version’->’Waiting’->’No AC connection’, the
display repeats ’NO Utility’ and LED will be red.
Close the AC breaker or fuse between PV-Inverter and grid. Turn on the DC
switch. The normal operating sequence begins.
Under normal operating conditions the LCD displays ‘Power: xxx.x W’. That is
the power fed to the grid. The LED turns green.
This completes the check.
DISPLAY 6
6.1 LCD display
Starting-up display sequence , once the PV power is sufficient , inverter displays
information as shown in the flow chart as follow:
Module: xxxxxx
SerNo: xxxxxxxxxx
FW Version: x.x.x
Connect in: xxS
Connect : OK
Power: xxxx.xW
6.2 LCD control
To save power, the LCD display’s backlight automatically turns off after 30 seconds.
The display on the inverter can be control by Knock on the front of it.
The first line will show some status of the inverter, there are 5 status listed in below
table.
Programming
Program State
The First Line Of LCD
STATE DISPLAY CONTENT
Wait State Standby
Waiting
Connect in xxS
Reconnect in xxS
Connect OK
Power: xxxx.xW
Error: xxx
Auto Testing
Inverter State
Fault State
Auto Test State
Update Software
REMARK
PV voltage low
Initial waiting
System checking
System checking
Connect to Grid
Inverter watt at working
System Fault
Protection auto test
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