Invt Imars User manual

Operation Manual

iMars Grid-tied Solar Inverter

INVT Solar Technology (Shenzhen) Co., Ltd.

Preface

The manual is intended to provide detailed information of product information,

installation, application, trouble shooting, precautions and maintenance of iMars

series grid-tied solar inverters. The manual does not contain all the information

of the photovoltaic system. 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.

The use of iMars series grid-tied solar inverters must comply with local laws and

regulations on grid-tied power generation.

The manual needs to be kept well and be available at all times.

notice.

There may be data deviation because of product improving. Detailed information

is in accordant with the final product.

iMars grid-tied solar inverters Contents

Contents

Preface ..................................................................................................................................................1

Contents................................................................................................................................................2

1 Safety precautions ..............................................................................................................................4

1.1 Icons ........................................................................................................................................ 5

1.2 Safety guidelines..................................................................................................................... 5

1.2.1 Delivery and installation....................................................................................................................6

1.2.2 Grid-tied operation............................................................................................................................7

1.2.3 Maintenance and inspection ............................................................................................................7

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............................................................................................................ 12

2.3 Nameplate............................................................................................................................. 13

2.4 Products modules.................................................................................................................. 14

2.5 Dimensions and weight......................................................................................................... 15

3 Storage .............................................................................................................................................17

4 Installation .......................................................................................................................................18

4.1 Unpacking inspection............................................................................................................ 19

4.2 Before installation.................................................................................................................. 21

4.2.1 Installation tools........................................................................................................................... 21

4.2.2 Installation place......................................................................................................................... 21

4.2.3 Cable specification ..................................................................................................................... 22

4.2.4 Miniature circuit breakers.......................................................................................................... 23

4.3 Mechanical installation.......................................................................................................... 24

4.3.1 Installation of single-phase inverter.............................................................................................. 24

4.4 Electrical installation.............................................................................................................. 26

iMars grid-tied solar inverters Contents

4.4.1 Connection of solar modules.................................................................................................... 27

4.4.2 AC connection ............................................................................................................................. 29

5 Operation .........................................................................................................................................30

5.1 Inspection before operation .................................................................................................. 31

5.2 Grid-tied operation ................................................................................................................ 31

5.3 Stopping................................................................................................................................. 32

5.4 Daily maintenance................................................................................................................. 32

5.4.1 Regular maintenance................................................................................................................. 32

5.4.2 Maintenance guide..................................................................................................................... 33

6 Display panel ....................................................................................................................................34

6.1 LED indicators....................................................................................................................... 35

6.2 Operation panel..................................................................................................................... 36

6.3 LCD screen............................................................................................................................ 37

6.4 Functions operation............................................................................................................... 38

6.4.1 Monitoring parameters .................................................................................................................. 38

6.4.2 History ............................................................................................................................................. 38

6.4.3 Statistics .......................................................................................................................................... 39

6.4.4 Parameter settings ......................................................................................................................... 39

6.4.5 System Information ........................................................................................................................ 48

6.4.6 Faults ............................................................................................................................................... 48

6.4.7 Inverter control............................................................................................................................... 48

6.5 Grid certification choice......................................................................................................... 49

7 Monitoring communication...............................................................................................................52

7.1 Standard communication ...................................................................................................... 53

7.2 Optional communication ....................................................................................................... 54

8 Troubleshooting ...............................................................................................................................55

9 Contact us.........................................................................................................................................59

iMars grid-tied solar inverters Safety precautions

1 Safety precautions

iMars series grid-tied solar inverters are designed and tested strictly in

accordance with relevant international safety standards. As an electrical and

electronic device, all relevant safety regulations must be strictly complied during

installation, operation, and maintenance. Incorrect use or misuse may result in：

Injury to the life and personal safety of the operator or other people.

Damage to the inverter or other property belonging to the operator or

other people.

In order to avoid personal injury, damage to the inverter or other devices, please

strictly observe the following safety precautions.

This chapter mainly describes various waring symbols in operation manual and

provides safety instructions for the installation, operation, maintenance and use

of the iMars series grid-tied solar inverters.

iMars 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

Serious physical injury or even death

may occur if not follow the relative

requirements

Warning

Physical injury or damage to the devices

may occur if not follow the relative

requirements

Do not

Electrostatic

sensitive

Damage may occur if not follow the

relative requirements

Hot sides

Sides of the device may become hot. Do

not touch.

Note

The procedures taken for ensuring

proper operation.

Note

1.2 Safety guidelines

After receiving this product, first make sure that the product is well packaged.

If you have any questions, please contact the shipping company or local

distributor immediately.

Installation of PV inverters must be performed by professional technician

who has been specially trained, thoroughly read and familiar with all the

contents of this manual and familiar with the safety requirements of the

electrical system.

Do not carry out any wiring and inspection or changing components when the

power supply is applied.

Ensure that there is no electromagnetic interference from other electrical and

electronic equipment 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.

iMars grid-tied solar inverters Safety precautions

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.

It must be reliably grounded before operation.

Do not open the cover of inverters unauthorized. The electrical parts and

components inside the inverter are electrostatic. Take measurements to avoid

electrostatic discharge during relevant operation.

The inverter must be reliably grounded.

Ensure that DC and AC side circuit breakers have been disconnected and wait

at least 5 minutes before wiring and checking.

Note: Technical personnel who can perform installation, wiring, commissioning, maintenance,

troubleshooting and replacement of the iMars series grid-tied solar inverters must meet the

following requirements:

Operators need professional training.

Operators must read this manual completely and master the related safety precautions.

Operators need to be familiar with the relevant safety regulations for electrical systems.

Operators need to be fully familiar with the composition and operating principle of the

entire grid-tied photovoltaic power generation system and related standards of the

countries/regions in which the project is located.

Operators must wear personal protective equipment.

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.

iMars grid-tied solar inverters Safety precautions

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 before electrical connection.

Exposed to sunlight, solar modules will output dangerous voltage.

The inverter input voltage can 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

no grounding may cause stop of the inverter.

Ensure reliable installation and electrical connection.

Note: iMars series grid-tied solar inverters are only for crystalline silicon solar modules.

1.2.2 Grid-tied operation

Only qualified electricians are allowed to operate the inverter under the

permission of local power departments.

All electrical connections must meet the electrical standards of the

countries/regions in which the project is located.

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.

In order to avoid irrelevant personnel from entering the maintenance area during

maintenance, temporary warning labels must be placed to warn

non-professionals to enter or use fence for isolation.

Firstly disconnect all power supplies of the grid to the inverter before any

maintenance, and then disconnect the DC breakers and wait for at least 5

minutes until the inverter is discharged before maintenance.

Please follow electrostatic protection norms and take correct protective

iMars grid-tied solar inverters Safety precautions

measures because of the electrostatic sensitive circuits and devices in the

inverter.

Do 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

Do not dispose of the inverter together with household waste. The user has

the responsibility and obligation to send it to the designated organization for

recycling and disposal.

iMars 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 series grid-tied solar inverters.

iMars grid-tied solar inverters Product overview

2.1 Solar grid-tied power generation system

2.1.1 Application

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 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 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.

The recommended solar modules need to comply with IEC61730 Class A

standard.

2.1.2 Supported grid connection structure

iMars series grid-tied solar inverters support TN-S, TN-C, TN-C-S and TT grid connection.

When applied to the TT connection, the N-to-PE voltage should be less than 30V.

iMars grid-tied solar inverters Product overview

Figure 2.2 Type of grid

iMars grid-tied solar inverters Product overview

2.2 Products appearance

Figure 2.3 Products appearance

Table 2-1 Parts instruction

No.

Name

Instruction

Cover

LED display panel

LED indicators

DC switch

On –off of the DC input (optional)

DC input port

For the connection of solar modules

AC terminal

For the connection of AC output

Communication port

RS485 and EXT communication port

Cooling chamber

Radiator

Name plate

For rated parameters and safety precautions

of the inverter

iMars grid-tied solar inverters Product overview

2.3 Nameplate

Inverter nameplate as shown in Figure 2.4

Figure 2.4 Inverter nameplate

（1）Trademark and product type

（2）Model and important technical parameters

（3）Certification system of the inverter confirming

（4）Serial number, company name and country of origin.

iMars grid-tied solar inverters Product overview

Icons

Instruction

TUV certification mark. The inverter is certified by TUV.

CE certification mark. The inverter complies with the CE directive.

CQC certification mark. The inverter is certified by CQC.

EU WEEE mark. Cannot dispose of the inverter as household waste.

2.4 Products modules

Table 2-2 Models of iMars grid-tied solar inverter

Product name

Model

Rated output power

Single-phase (L, N, PE)