INVT iMars MG Series User manual

iMars MG Series
Grid-tied Solar Inver ter

Preface
Thank you for purchasing iMars MG series grid-tied solar inverters.
iMars MG series grid-tied solar inverters is mainly used in solar photovoltaic grid system. As a
non-isolation and high-efficiency string photovoltaic grid-tied inverter, it transfers DC energy
generated by solar modules to sinusoidal AC energy and feedback to public grid. The energy has
the same frequency and phase with the utility grid.
The manual is intended to provide detailed information of installation, application, trouble shooting,
precautions and maintenance of iMars MG series grid-tied solar inverters. Please read this manual
carefully and follow all safety precautions seriously before any moving, installation, operation and
maintenance to ensure correct use and high performance of operation on the inverter.
Configured monitoring and design software for iMars MG series grid-tied solar inverters are also
provided. Go to www.invt-solar.com and download the software installation package and use
instructions.
The inverter complies with local regulations and laws on grid feeding.
The manual needs to be kept well and be available at all times.
All rights reserved. The contents in this document are subject to change without notice.
There may be data deviation because of product improving. Detailed information is in accordant
with the final product.
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INVT iMars MG series grid-tied solar inverters Content
Contents
Preface............................................................................................................................................1
Contents .........................................................................................................................................2
1 Safety precautions......................................................................................................................5
1.1 Icons .....................................................................................................................................6
1.2 Safety guidelines...................................................................................................................6
1.2.1 Delivery and installation................................................................................................7
1.2.2 Grid-tied operation........................................................................................................8
1.2.3 Maintenance and inspection.........................................................................................8
1.2.4 What to do after scrapping............................................................................................8
2 Product overview........................................................................................................................9
2.1 Solar grid-tied power generation system ............................................................................10
2.2 Products appearance..........................................................................................................11
2.2.1 Single-phase inverters................................................................................................11
2.3 Name plates........................................................................................................................11
2.3.1 Name plate on the package........................................................................................12
2.3.2 Name plate on the inverter..........................................................................................12
2.3.3 Models ........................................................................................................................13
2.4 Technical parameters .........................................................................................................14
2.5 Dimensions and weight.......................................................................................................16
3 Installation.................................................................................................................................18
3.1 Unpacking inspection..........................................................................................................19
3.2 Before installation ...............................................................................................................20
3.2.1 Installation tools..........................................................................................................20
3.2.2 Installation place.........................................................................................................20
3.2.3 Connection cables ......................................................................................................21
3.2.4 Miniature circuit breakers............................................................................................22
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INVT iMars MG series grid-tied solar inverters Content
3.3 Mechanical installation........................................................................................................23
3.3.1 Installation of single-phase inverter ............................................................................23
3.4 Electrical installation ...........................................................................................................25
3.4.1 Connection of solar modules ......................................................................................26
3.4.2 AC connection of single-phase inverter......................................................................27
4 Operation...................................................................................................................................28
4.1 Inspection before operation ................................................................................................29
4.2 Grid-tied operation..............................................................................................................29
4.3 Stopping..............................................................................................................................30
4.4 Daily maintenance ..............................................................................................................30
4.4.1 Regular maintenance..................................................................................................30
4.4.2 Maintenance guide......................................................................................................31
5 Display panel.............................................................................................................................32
5.1 LED indicators.....................................................................................................................33
5.2 Operation panel ..................................................................................................................34
5.3 LCD screen.........................................................................................................................35
5.4 Functions operation ............................................................................................................36
5.4.1 Monitoring parameters................................................................................................36
5.4.2 History.........................................................................................................................36
5.4.3 Statistics......................................................................................................................37
5.4.4 Parameter settings......................................................................................................37
5.4.5 System Information.....................................................................................................45
5.4.6 Faults..........................................................................................................................45
5.4.7 Inverter control............................................................................................................45
5.4.8 Mode settings..............................................................................................................46
5.5 Grid Certification Choice.....................................................................................................47
6 Monitoring communication......................................................................................................50
6.1 Standard communication....................................................................................................51
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INVT iMars MG series grid-tied solar inverters Content
6.2 Optional communication .....................................................................................................52
6.2.1 WiFi200 converter.......................................................................................................53
6.2.1.1 WiFi200 Product Introduction ..................................................................................53
6.2.1.2 Monitoring solutions.................................................................................................54
6.2.1.3 Installation and commissioning................................................................................56
7 Troubleshooting .......................................................................................................................64
8 Contact us .................................................................................................................................67
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INVT iMars MG series grid-tied solar inverters Safety precautions
1 Safety precautions
This chapter describes various warning symbols in the operation manual of iMars series inverters.
It is intended to provide the installers and the users with all safety information about installation,
operation, and use of the inverter.
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INVT iMars MG series grid-tied solar inverters Safety precautions
1.1 Icons
This manual provides relevant information with icons to highlight the physical and property safety
of the user to avoid device damage and physical injury.
The icons used in this manual are listed below:
Icons Name Instruction Abbreviation
Danger Danger Serious physical injury or even death may
occur if not follow the relative requirements
Warning Warning Physical injury or damage to the devices
may occur if not follow the relative
requirements
Do not Do not Damage may occur if not follow the relative
requirements
Hot sides
Hot
sides Sides of the device may become hot. Do not
touch.
Note Note Physical hurt may occur if not follow the
relative requirements Note
1.2 Safety guidelines
The first thing after receiving is to check for any visible damage to the package
or to the inverter. If there is something suspect
ed, contact the shipping
company and local dealer before installing.
Only qualified electricians are allowed to operate on the inverter.
Do not carry out any wiring and inspection or changing components when the
power supply is applied. Hazardous voltages may still be present in the inverter
even if the AC and DC main switches are switched off. Wait at least 5 minutes
after switching off the inverter. This ensures that the capacitors are electrically
discharged.
This product can cause a d c current in the external protective earth conductor.
Where a residual current-operated protective (RCD) or monitoring (RCM)
device is strongly recommend to used for protection in a case of direct or
indirect contact, only an RCD or RCM of Type B is allowed on the supply side
of this product;
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INVT iMars MG series grid-tied solar inverters Safety precautions
Ensure that there is no electromagnetic interference from other electrical and
electronic equipments on the installation site.
Do not refit the inverter unauthorized.
All the electric installation needs to be compliance with the national or local
laws and standards.
The temperature of individual parts or the enclosure of the inverter–especially
the heat sink may become hot in normal operation. There is a danger of
burning. Do not touch.
Must be grounded before operation.
Do not open the cover of inverters unauthorizedly. The electrical parts and
components inside the inverter are electrostatic. Take measurements to avoid
electrostatic discharge during relevant operation.
1.2.1 Delivery and installation
Keep the package and unit complete, dry and clean during storage and delivery.
Please remove and install the inverter with two or more people, because of the
inverter is heavy.
Remove and install the inverter with appropriate tools to ensure safe and normal
operation and avoid physical injury or death. The people also need mechanical
protective measures, such as protective shoes and work clothes.
Only qualified electricians are allowed to install the inverter.
Do not put and install the inverter on or close to combustible materials.
Keep the installation site away from children and other public places.
Remove the metal jewelry such as ring and bracelet before installation and
electrical connection to avoid electric shock.
Do cover solar modules with light-tight materials. Exposed to sunlight, solar
modules will output dangerous voltage.
The inverter input voltage does not exceed the maximum input voltage;
otherwise inverter damage may occur.
The positive and negative pole of solar modules can not be grounded, otherwise
irrecoverable damage may occur.
Ensure the proper grounding of the inverter, otherwise, improper connection or
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INVT iMars MG series grid-tied solar inverters Safety precautions
no grounding may cause stop of the inverter.
Ensure reliable installation and electrical connection.
When the photovoltaic generator cells are exposed to light (even if it is dim), the
generator supplies DC voltage to the inverter.
modules.
1.2.2 Grid-tied operation
Only qualified electricians are allowed to operate the inverter
under the
permission of local power departments.
Ensure reliable installation and electrical connection before operation.
Do not open the cover of inverter during operation or voltage is present.
1.2.3 Maintenance and inspection
Only qualified electricians are allowed to perform the maintenance, inspection,
and components replacement of the inverter.
Contact with the local dealer or supplier for maintenance.
Firstly disconnect all power supplies of the grid to the inverter before any
maintenance, and then disconnect the breakers and wait for at least 5 minutes
until the inverter is discharged before maintenance.
Please follow electrostatic protection norms and take correct protective
measures because of the electrostatic sensitive circuits and devices in the
inverter.
D
o not use parts and components not provided by our company during
maintenance.。
Restart the inverter after settling the fault and problem which may affect the
safety and performance of the inverter.
Do not get close to or touch any metal conductive part of the grid or inverter,
otherwise electric shock, physical injury or death and fire may occur. Please do
not ignore the warning icons and instructions with “electric shock”.
1.2.4 What to do after scrapping
Deal with the inverter as industrial effluent.
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INVT iMars MG series grid-tied solar inverters Product overview
2 Product overview
This chapter mainly describes the appearance, packaging accessories, name plate, technical
parameters and other information of iMars MG series grid-tied solar inverters.
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INVT iMars MG series grid-tied solar inverters Product overview
2.1 Solar grid-tied power generation system
The photovoltaic grid-tied power generation system consists of solar modules, grid-tied inverter,
metering devices and public grid.
Figure 2.1 Application of iMars MG series grid-tied solar inverters
Grid-tied solar inverter is the core of photovoltaic power generation system. The solar energy can
be converted into DC electric energy through solar modules and then be changed into sinusoidal
AC energy which has the same frequency and phase with the public grid by grid-tied solar
inverters, and then be fed to the grid.
iMars MG series grid-tied solar inverters are only applied in solar grid-tied power generation
system and its DC input are only composed of crystalline silicon solar modules whose negative
and positive poles are not grounded. Do not connect any AC loads between the inverter and
breakers which is shown as the figure below:
Figure 2.2 Connection of inverters and AC breakers
The recommended solar modules need to comply with IEC61730 Class A rating.
iMars MG series grid-tied solar inverters are only for crystalline silicon solar
modules.
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INVT iMars MG series grid-tied solar inverters Product overview
2.2 Products appearance
2.2.1 Single-phase inverters
1
2
3
45
6
7
8
9
Figure 2.3 Products appearance of single-phase inverter
Table 2-1 Parts instruction of single-phase inverter
No.
Name
Instruction
1
Cover
2
Operational panel
LED indicators
3 DC switch On –off of the DC input
4 DC input port For the connection of solar modules
5
AC terminal
For the connection of AC output
6
Communication port
RS485 and EXT communication port
7
Cooling chamber
8 Radiator
9 Name plate For rated parameters and safety precautions
of the inverter
2.3 Name plates
After receiving, please check the information of name plates are the ordered one. If not, please
contact with the supplier as soon as possible.
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INVT iMars MG series grid-tied solar inverters Product overview
2.3.1 Name plate on the package
The information on the name plate of the package includes the inverter model, certification
logo，,protective degree, gross weight, environmental logo, and brand information and so on.
Figure 2.4 Name plate on the package
2.3.2 Name plate on the inverter
The information on the name plate of the inverter includes the brand information, product name,
product model, DC input parameters, AC output parameters, operation temperature, protective
degree, grid certificate standard, certification logo, environmental logo, and serial No. of the
product and so on.
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INVT iMars MG series grid-tied solar inverters Product overview
Figure 2.5 Name plate on the inverter
2.3.3 Models
Table 2-2 Models of iMars grid-tied solar inverter
Product name Model Rated output power
Single-phase (L, N, PE)
Single-phase grid-tied solar inverter iMars MG750TL 750
Single-phase grid-tied solar inverter iMars MG1KTL 1000
Single-phase grid-tied solar inverter iMars MG1K5TL 1500
Single-phase grid-tied solar inverter IMars MG2KTL 2000
Single-phase grid-tied solar inverter iMars MG3KTL 3000
Single-phase grid-tied solar inverter iMars MG4KTL 4000
Single-phase grid-tied solar inverter iMars MG4K6TL 4600
Single-phase grid-tied solar inverter iMars MG5KTL 5000
Single-phase grid-tied solar inverter iMars MG3KTL-2M 3000
Single-phase grid-tied solar inverter iMars MG4KTL-2M 4000
Single-phase grid-tied solar inverter iMars MG4K6TL-2M 4600
Single-phase grid-tied solar inverter iMars MG5KTL-2M 5000
Note: Refer to the product specifications in section 2.3 for detailed information.
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INVT iMars MG series grid-tied solar inverters Product overview
2.4 Technical parameters
Table 2-3 Technical parameters of single-phase inverter
Model
Single-phase
MG750TL
MG1K1TL
MG1K5TL
MG2KTL
MG3KTL
MG4KTL
MG4K6TL
MG5KTL
MG3KTL
MG4KTL-2M
MG4K6TL-2M
MG5KTL-2M
DC side
Vmax PV 400 450 450 450 500 600 600 600 600 600 600 600
Recommended
Max. DC
voltage (V) 400 450 450 450 500 550 550 550 550 550 550 550
Starting voltage
(V)
60 80 80 120 120 120 120 120 120 120 120 120
MPPT
voltage(V)
50-400 60-400 80-410 100-410 120-450 120-550 120-550 120-550 120-550 120-550 120-550 120-550
Operation
voltage (V)
180-450 180-450 200-450 200-500 200-500 200-500 200-500 250-500 270-500 180-500 190-500 200-500
MPPT/strings
per MPPT
1/1 1/1 1/1 1/1 1/2 2/2 1/2 1/2 1/2 2/1 2/1 2/1
Max. DC power
(W)
900 1200 1700 2200 3300 4000 4600 5000 3000 4000 4600 5000
Max. input
current (A)
8x1 9x1 10x1 12×2 15×2 18×2 18×1 18×1 18×1 14×2 15×2 16×2
Max. inverter
backfeed
current to the
array
46 Apeak impulse (0,38 ms duration)
DC switch
Optional
Optional
Null
AC side
Max.
Continuous
output power
(W)
750 1100 1500 2000 3000 4000 4600 5000 3000 4000 4600 5000
Nominal
voltage /
frequency
Single phase, 230 Vac, 50 Hz
Voltage(V)
range /
frequency(Hz)
range
180~270Vac、50Hz(47~51.5Hz) / 60Hz(57~61.5Hz)
VDE0126& AR-N4105、AS4777.2/AS4777.3、CQC、G83-2、G59-3、C10/11、TF3.2.1、PEA
Max. AC
current (A)
3.6 4.5 6.5 9 13 16 18.3 20 14 16①18.3 20
Current
(inrush)
5 A
peak
(3
ms)
6.5 A
peak
(3
ms)
9.5 A
peak
(3
ms)
13 Apeak (3 ms)
18A
peak
(3 ms)
Maximum
output fault
current
40 Apeak impulse (19,5 ms duration)
Maximum
output
overcurrent
protection
4 A 4.8 A 7.1 A 10 A 14 A
Power factor
≥0,99 (rated load)
Harmonic
distortion
< 3% (rated power）
System
Cooling
Natural cooling
Natural cooling
Maximum
efficiency
96.90% 97.20% 97.30% 97.40% 97.60% 97.60%
97.40%
97.50%
97.60%
97.30%
97.40%
97.40%
European
efficiency
96.00% 96.10% 96.30% 96.50% 96.50% 96.50%
96.50%
96.50%
96.50%
96.40%
96.50%
96.50%
MPPT
efficiency
99.9%
Protection
degree
IP65
Power
consumption
< 1W
Isolation mode
Transformerless
Operation
(-25 ℃~ +60℃)
，derate after 45 ℃
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INVT iMars MG series grid-tied solar inverters Product overview
Model
Single-phase
MG750TL
MG1K1TL
MG1K5TL
MG2KTL
MG3KTL
MG4KTL
MG4K6TL
MG5KTL
MG3KTL
MG4KTL-2M
MG4K6TL-2M
MG5KTL-2M
temperature
Relative
humidity
4% ~ 100%., no Condensation
Max.
altitude(m)
<2000 (derate if the altitude＞2000)
Overvoltage
category:
II(DC side), III(AC side)
Displaying
LED/ LCD, backlit display
Systerm
language
English, Chinese, German, Dutch
Communication
RS485 (standard); handheld keypad; WiFi (optional)
DC terminal
SUNCLIX water-proof terminal
Noise dB(A) ≤25 ≤55
≤25
Installation
mode
Wall installation
Protection
Input overvoltage protection, input overcurrent protection, DC isolation monitoring, DC monitoring, grounding fault current monitoring, grid monitoring, island protection, short circuit protection, overheating protection
Remarks
①
G83: the maximum output current is 16A; others: the maximum output current is 18A.
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INVT iMars MG series grid-tied solar inverters Product overview
2.5 Dimensions and weight
Figure 2.6 Inverter dimensions
Table 2-4 Inverter dimension and net weight
Model H
(mm)
W
(mm)
D
(mm)
Net weight
(kg)
MG750TL/MG1KTL / MG1K5TL /
MG2KTL /MG3KTL 280 300 138 9.5
MG4KTL /MG5KTL
365
360
160
15
MG3KTL-2M/ MG4K6TL/
MG4KTL-2M/MG4K6TL-2M/
MG5KTL-2M
420 360 160 17
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INVT iMars MG series grid-tied solar inverters Product overview
W
H
D
Figure 2.7 Paper packages dimension
Table 2-5 Packages dimension and gross weight
Model H
(mm)
W
(mm)
D
(mm)
Gross
weight (kg)
Packaging
Material
MG750TL/MG1KTL/MG1K5TL /
MG2KTL/MG3KTL
411 418 249 12 Paper
MG4KTL/MG4K6TL 518 480 284 16.5 Paper
MG3KTL-2M/ MG4K6TL/
MG4KTL-2M/MG4K6TL-2M/
MG5KTL-2M
573 480 284 18.5 Paper
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INVT iMars MG series grid-tied solar inverters Installation
3 Installation
This chapter describes how to install the inverter and connect it to the grid-tied solar system
(including the connection between solar modules, public grid and inverter).
Read this chapter carefully and ensure all installation requirements are met before installation.
Only qualified electricians are allowed to install the inverter.
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INVT iMars MG series grid-tied solar inverters Installation
3.1 Unpacking inspection
Inspect the information of the order and the name plate to ensure the product are the ordered one
and no damage to the package. If any problem, contact the supplier as soon as possible.
Put the inverter into the package if not used and protect it from humidity and dust.
Check as following after unpacking:
(1) Ensure no damage to the inverter unit;
(2) Ensure the operation manual, port and installation accessories in the package;
(3) Ensure no damage or loss to the items in the package;
(4) Ensure the information of the order are the same as that of the name plate;
(5) The delivery list of single-phase inverter is different from that of three-phase inverter.
Below are the detailed lists:
Packing list of single-phase inverter:
Figure 3.1 Packing list of single-phase inverter
Table 3-1 Detailed delivery list of single-phase inverter
No. Name Quantity
1
MG750TL/MG1KTL/MG1K5TL /
MG2KTL/MG3KTL/
MG4KTL/MG4K6TL/MG5KTL/
MG3KTL-2M/MG4KTL-2M/
MG4K6TL-2M/MG5KTL-2M inverter
1
2 Installation bracket 1
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