Ningbo Ginlong Technologies Solis-2.5K-2G Installation And Operation Manual

Ningbo Ginlong Tec hn ol og ie s Co ., L td .

No. 57 Jintong Road, Binhai Industrial Park,

Xiangshan, Ningbo, Zhejiang, 315712, P.R. Ch in a

Tel: [phone]

Fax: [phone]

Email: [e-mail]

Web : ww w.g in lo ng .c om

Ple ase rec ord t he seri al numb er of you r inv erter a nd quot e this wh en you co ntact u s.

Solar PV Grid Tie Inverter

Installation and Operation Manual

Ver 1.0

2013 , Ningb o Gi nlo ng Tec hn ologi es Co., L td.

C

in ver te r

-2.5K-2G

1. Introduction

2. Safety Instructions

2.1 Safety Symbols

2.2 General Safety Instructions

2.3 Intended Use

3. Overview

3.1 Front Panel Display

3.2 LED Status Indicator Lights

3.3 Keypad

3.4 LCD

4. Installation

4.1 Selecting a Location for the Inverter

4.2 Mounting the Inverter

4.3 Electrical Connections

4.4 System Installation Requirement

4.5 Grounding

5. Setup and Stop

5.1 Starting the Inverter

5.2 Stopping the Inverter

6. Operation

6.1 Main Menu

6.2 Information

6.3 Settings

6.3.1 Setting Time

6.3.2 Setting Address

6.3.3 Clearing Energy

6.3.4 Restoring Settings

6.4 Advanced Info.

6.4.1 Alarm Message

Contents Contents

.1. .2.

3

4

4

5

6

7

7

7

8

8

9

9

9

11

15

15

16

16

16

………………………

………………………………………

………………………………………………

………………………………

………………………

……………………………………………

…………………………………………………

………………………………………………

………………

…………………………………

……………………………

………………

……………………………………………

………………………………………

………………………………

…………………………………

……………………………………………

……………………………………

……………………………………

17

17

17

19

19

19

20

20

21

21

…………………………………………………

……………………………………………

……………………………………………

………………………………………………

…………………………………

………………………………

………………………………

……………………………

………………………………………

………………………………

6.4.2 STD No.

6.4.3 Version

6.4.4 Communication Data

6.5 Advanced Settings

6.5.1 Selecting Standard

6.5.2 Grid ON/OFF

7. Maintenance

8. Trouble Shooting

9. Specifications

22

22

22

22

23

24

24

25

25

27

………………………………………

…………………………………………

…………………………

…………………………………

……………………………

…………………………………

………………………………

………………………………………………

…………………………………………

……………………………………………

6.5. 3 New Pas swo rd

1. Introduction

Solis-2.5K-2G is a transformerless solar grid tie inverter. It has excellent

MPPT performance to effeciently obtain power from solar panels.

The maximum input current of Solis-2.5K-2G is 10A DC and maximum

output power is 2800W.

2. Safety Instructions

2.1 Safety Symbols

WARNING:

WARNING symbol indicates important safety instructions, which if not
correctly followed, could result in serious injury or death.

NOTE:

NOTE symbol indicates important safety instructions, which if not correctly
followed, could result in damage to or destruction of the inverter.

CAUTION:

CAUTION, RISK OF ELECTRIC SHOCK symbol indicates important safety
instructions, which if not correctly followed, could result in electric shock
causing serious injury or death.

CAUTION:

CAUTION, HOT SURFACE symbol indicates safety instructions, which if not
correctly followed, could result in burns.

!

.3. .4.

Sol is-2. 5K-2G i s desig ned and m anufa cture d to ensu re your p erson al

saf ety. Imp ro pe r use m ay r es ul t in po te nt ia l ele ct ri c sh ock h az ar ds

or bu rns. Th is m an ual c on ta in s imp ortan t instr uc ti on s tha t shoul d

be fo llowe d durin g insta llati on and ma inten ance of S olis- 2.5K- 2G.

Ple ase rea d these i nstru ction s caref ully be fore us e and kee p them

for f uture r efere nce.

Saf ety sym bols us ed in thi s manua l, whic h highl ight po tenti al safe ty risk s

and i mport ant saf ety inf ormat ion, ar e liste d as foll ows:

Figure 1.1 Solis-2.5K-2G vertical view

Figure 1.1 Solis-2.5K-2G side view

2.Safety Instructions2.Safety Instructions

2.2 General Safety Instructions

!

WARNING:

Solis-2.5K-2G is a transformerless inverter. Hence before its operation, it is very
important to ensure that the DC input source and the AC output source are
electrically isolated. Failure to do so will cause serious damage to the inverter.
( CAUTION: AC and DC voltage sources are terminated inside the inverter.
The AC circuit and the DC circuit must be isolated from each other before
servicing. Each circuit must be individually disconnected before servicing.)

!

WARNING:

All electrical installations must be done in accordance with the local and
National Electrical Code AS/NZS3000.

!

WARNING:

To reduce the risk of fire, branch circuit overcurrent protective devices are
required for circuits connected to Solis-2.5K-2G. The rating of overcurrent
device should not exceed 15 amperes.

CAUTION:

Risk of electric shock. Do not remove cover. There are no user serviceable
parts inside. Refer servicing to qualified and accredited service technician.

CAUTION:

The PV array (Solar panels) supplies a DC voltage when it is exposed to light.

CAUTION:

Risk of electric shock from energy stored in capacitors of Solis-2.5K-2G. Do not
remove cover until 5 minutes after disconnecting all sources of supply. Service
technician only. Warranty may be void if unauthorized removal of cover.

CAUTION:

Solis-2.5K-2G has a heat sink on its top surface, which helps in cooling down the
internal components. The heat sink can reach temperatures up to 70℃ (158 F).
To avoid risk of burns, do not touch the heat sink when the inverter is
operating. To install an inverter on a wooden, painted, or any other combustible
surface, a cement sheet is required to be used as a fire retardant material
between the wall and the inverter mounting.
Inverter must be installed OUT OF REACH OF CHILDREN.

2.3 Intended Use

The inverter has been constructed according to the applicable safety and technical
guidelines. Use the inverter in installations that meet the following sepcifications
ONLY:

1.Permanent installation is required.

2.The inverter must be connected to a separate, grounded AC group, to which no other

electrical equipment is connected.

3.The electrical installation must meet all the applicable regulations and standards.

4.The inverter must be installed according to the instructions stated in this manual.

5.The inverter must be installed according to the correct technical specifications.

.5. .6.

7.T he DC inp ut volt age int o the Sol is-2. 5K-2G m ust NOT e xc ee d 600 Vd c.

6.To st artup t he inve rter, th e Grid Su pply Ma in Swit ch (AC) m ust be sw itche d on befo re

the s olar pa nel DC is olato r is swit ched on . To stop t he inve rter, th e Grid Su pply Ma in

Swi tch (AC ) must be s witch ed off be fo re s ola r pa ne l DC i sol at or i s sw itc he d of f.

3. Overview

3.3 Keypad3.1 Front Panel Display

Figure 3.1 Front Panel Display

3.2 LED Status Indicator Lights

There are three LED status indicator lights in the front panel of Solis-2.5K-2G. The left
POWER light (red) indicates power status of the inverter. The middle OPERATION
light (green) indicates the operation status. The right ALARM light (yellow) indicates
the alarm status. Table 3.1 explains their meanings.

Description

The inverter is detecting solar power signal.

The inverter has lost a solar power signal.

The inverter is operating properly.

The inverter has stopped supplying power.

The inverter is initializing.

Alarm or fault condition is detected. The inverter

stores the last 10 messages.

The inverter is operating properly.

Status

ON

OFF

ON

OFF

OFF

ON

FLASHING

Light

POWER

OPERATION

ALARM

3.4 LCD

There are four keys in the front panel of the Solis-2.5K-2G(from left to right): ESC, UP, DOWN

and ENTER keys. The keypad is used for:

Scrolling through the displayed options (the UP and DOWN keys);

Access to modify the adjustable settings (the ESC and ENTER keys).

3. Overview

The two-line Liquid Crystal Display (LCD) is located at the front panel of Solis-2.5K-2G,

which shows the following information:

Inverter operation status and data;

Service messages for operator;

Alarm messages and fault indications.

Table 3.1 Status Indicator Lights

.7. .8.

4. Installation

4.1 Selecting a Location for the Inverter

4. Installation

To select a location for the inverter, the following criteria should be considered:

The temperature of the inverter heat sink up to 70℃. Hence the inverter must

be installed at a place where nobody will touch its top.

The inverter is designed to work in extreme temperatures. The ambient operating

temperature range is from -25℃ to 60℃.

A minimum 500mm clearance between the bottom of the inverter and the ground are

recommended.

Visibility of the LED status indicator lights and the LCD located at the front panel of

the inverter should be considered.

Adequate ventilation must be provided if the inverter is to be installed in a confined space.

4.2 Mounting the Inverter

Please use suitable fixings for wall type (e.g. use dynabolts for brick masonry).

Inverter should be mounted in a vertical position as shown in Figure 4.1. The steps to

mount the inverter to the wall are given as follows:

WARNING:

!

.9. .10.

NOTE:

Nothing should be stored on or placed against the inverter.

NOTE:

Heat sink must be Out of Reach of Children.

3. Ca reful ly hang t he inve rter on t he uppe r part of t he brac ket so th at the ho oks

loc ated at t he rear o f the inv erter h ang ove r the bra cket. U se M4×25 st ainle ss

ste el scre ws to sec ure poi nts E and F ( in Fig 4. 2) to the b racke t .

Bra cket mu st be mou nted ho rizon tally o n a verti cal wal l surfa ce.

1. Locate the wall studs in the desired location and align the wall mount bracket over

the studs. Mark the mounting holes. For masonry walls, the mounting holes should be

as for a suitable dynabolt type mounting system.

2. MAKE SURE BRACKET IS LEVEL. Ensure mounting holes A, B, C and D (in Figure

4.2) are aligned with most secure points on wall (e.g. wall studs if clad building

materials).

Fig ure 4.1 I nvert er Moun ting

Bra cket

M4×25 s tainl ess ste el scre w

Inv erter

5.5×3 8 stain less st eel scr ew

Fig ure 4.2 W all Mou nt B ra cket

A

B

C

D

Inv erter

E(F)

4.3 Electrical Connections

Solis-2.5K-2G can transfer the power available to the utility at any input DC voltage that is

within the range from 100Vdc to 500Vdc. The maximum input current is 10Adc. The rated

output voltage of Solis-2.5K-2G is 230Vac or 240Vac.

The electrical connection of the inverter must follow the steps listed below:

1. Switch the Solar Supply Main Switch (AC) OFF.

2. Switch the solar panel DC Isolator OFF.

3. Connect Solis-2.5K-2G to the solar panel DC Isolator.

a) Make sure the polarity of the output voltage from the solar panel (i.e. the input voltage

for Solis-2.5K-2G) matches the “DC+”and“DC-”symbols.

b) Attach the positive DC connector (refer to Figure 4.3) to the solar panel output positive

terminal. Attach the negative DC connector (refer to Figure 4.4) to the solar panel

output negative terminal.

Figure 4.3 DC+ Connector Figure 4.4 DC- Connector

The steps to assemble the DC connectors are listed as follows:

i) Disassemble the connector coat (see Figure 4.5).

ii) Insert the wire into the bottom part of the connector coat as shown in Figure 4.6.

Figure 4.5 Disassemble the Connector Cap

Figure 4.6 Insert the Wire into the Connector Cap

ii) Attach the pin top to the wire as shown in Figure 4.7.i

Figure 4.7 Attach the Pin Top to the wire

iv

on the bottom part of the connector (as shown in Figure 4.8).

) Insert the pin to the top part of the connector and screw the top part back

Figure 4.8 Connector with Cap Screwed on

.11. .12.

4. Installation 4. Installation

Sol is-2. 5K-2G i s desig ned for e lectr ical co nnect ion wit hout re movin g the cov er. The

mea ning of t he symb ols loc ated at t he bott om of the i nvert er are li sted in Tab le 4 .1 .

All e lectr ical in stall ation s must be i n accor dance w ith all l ocal an d natio nal ele ctric al

cod es.

Table 4.1 Terminals

+

-

Pos itive t ermin als of DC i nput

Neg ative t ermin als of DC i nput

DC 1

DC 1 in put ter minal s posit ive or ne gativ e

DC 2

DC 2 in put ter minal s posit ive or ne gativ e

DC SW ITCH

Swi tch of DC i nput te rmina ls(op tiona l)

COM

Equ ipmen t commu nicat ion con nect te rmina l

Rs4 85 comm unica tion co nnect t ermin al(op tiona l)

RS 48 5

GRI D

Equ ipmen t grid wi res con nect te rmina l

v) Then connect the DC connectors to Solis-2.5K-2G (as shown in Figure 4.9).

Figure 4.9 Connect the DC Connectors to the Inverter

4. Connect Solis-2.5K-2G to the AC grid switch.

Each Solis-2.5K-2G is supplied with an AC grid terminal connector, which is shown in Figure 4.10.

!

WARNING:

Figure 4.10 AC Grid Terminal Connector

Figure 4.11 AC Grid Terminal Connector Inside

The steps to assemble the AC grid terminal connectors are listed as follows:

a) Attach the wires to the grid terminal using screws on the connector (as shown in

Figure 4.12).

b) Put the terminal cap on the terminal (as shown in Figure 4.13).

Figure 4.12 Connect Wires to the Grid Terminal

Figure 4.13 Put the Cap on the Terminal

c) Connect the AC grid terminal connector to Solis-2.5K-2G (as shown in Figure 4.14).

Figure 4.14 Connect the Terminal Connector to Solis-2.5K-2G

5. Connect Solis-2.5K-2G to your PC via communication terminal (optional).

Please refer to the software application manual.

.13. .14.

4. Installation 4. Installation

The re are sy mb ol s ma rke d in si de t he co nn ec to r ( see F ig ur e

4.11 ), t he L ine w ir e of g ri d mus t be c on ne cte d to“L”t er mi nal ; the Neu tral wi re
of gr id must b e conne cted to“N”t ermin al; the E arth of g rid mus t be conn ected
to“ ”(s ee Figu re 4.12 ).

5. Setup and Stop

4.4 System Installation Requirement

Figure 4.15 is a simple guidance for installing a solar system with PV inverter. A DC isolator

is required to be installed in the system between the PV panels and the inverter.

Figure 4.15 Guidance for a Simple Installation of an Inverter Solar Energy System

4.5 Grounding

Solis-2.5K-2G must be earthed securely. Inside the inverter, the earth wire is in yellow and green.

When the inverter is connected to the grid through the AC grid terminal connector, the earth

wire will be connected to the Earth and hence ensure safety.

5.1 Starting the Inverter

To start up Solis-2.5K-2G, it is important that the following steps are strictly adhered to:

1. Switch the Solar Supply Main Switch (AC) ON first.

2. Switch the solar panel DC Isolator ON. If the solar panels provide normal power

supply, Solis-2.5K-2G will turn on ( the red light displays and the LCD show the model name of

the inverter ).

Solis-2.5K-2G

Figure 5.1 Company Name and Model Name on LCD

3. When both the DC side and AC grid side of Solis-2.5K-2G have power presented, the inverter

will prepare to generate. Initially, Solis-2.5K-2G will check both its internal parameters and

the parameters of the AC grid to ensure that they are within the acceptable limits. At

this time, the green light will flash and the LCD displays the information of INITIALIZING.

4. After 3 mins, Solis-2.5K-2G will generate electricity normally. The green light will remain

on and the LCD displays GENERATING.

WARNING:

Do not touch the heat sink when the inverter is operating. Some parts may be
hot and cause burns.

!

5.2 Stopping the Inverter

To stop Solis-2.5K-2G, the following steps must be strictly followed:

1. Switch the Solar Supply Main Switch (AC) OFF.

2. Wait 30 seconds. Switch the solar panel DC Isolator OFF. All the LEDs of the inverter will

be off in a minute.

Isolation switch

Solar supply

main switch

Consumers

mains

(to grid)

Main

switch

MAIN SWITCHBOARD

Circuits not

protected by

RCDs

Circuits Protected

by RCDs

Isolation device

Inverter with
integral grid

Protection device

Solar

(PV)

array

11

2

NOTE:

1. The RCD should not be placed between the consumers mains and the solar
supply.

2. More than one RCD may be used. Each RCD can protect one or more
circuits.

.15. .16.

4. Installation

6. Operation 6. Operation

6.1 Main Menu

During regular operation, the display shows the power and the operation status alternately

with each screen lasting for 10 seconds (see Figure 6.1). Screens can also be scrolled

manually by pressing the UP and DOWN keys. Pressing the ENTER key gives access to

the Main Menu.

Pressing the ESC key returns to the Main Menu. Pressing the ENTER key can lock (Figure

6.2(b)) or unlock (Figure 6.2 (a)) the screen.

Figure 6.1 Operation Overview

5 sec

Solis-2.5K-2G

Start

Power 1924W
01-01-2010 09:04

Status: Generating
01-01-2010 09:04

Information

Settings

Advanced Info.

Advanced settings

UP/DOWN

UP/DOWN

UP/DOWN

UP/DOWN or

auto-scroll

(10 sec)

Pressing the

ENTER key
gives access to
the main menu.

Pressing the

ESC key

calls back the

previous menu.

Main Menu

There are four submenus in the Main Menu (see Figure 6.1):

1. Information

2. Settings

3. Advanced Info

4. Advanced Settings

6.2 Information

The Solis-2.5K-2G main menu provides access to operational data and information. The

information is displayed by selecting "Information" from the menu and then by scrolling

up or down.

V_DC 350.8
I_DC 5.1A

V_Grid 230.4V
I_Grid 8.1A

Status: generating
Power: 1488W

Grid Frequency
F_Grid 50.06Hz

Total Energy
0258458 kwh

This Month: 0123kwh
Last Month: 0123kwh

This day: 02kwh
Last day: 01kwh

10 sec

10 sec

10 sec

10 sec

10 sec

10 sec

10 sec

V_DC: shows input voltage value.

I_DC: shows input current value.

V_Grid: shows grid voltage value.

I_Grid: shows grid current value.

Status: shows instant status of Solis-2.5K-2G.

Power: shows instant output power value.

F_Grid: shows instant frequency of grid value.

Total energy output value (since the last time

energy was cleared).

This Month: Total energy output during this month.

Last Month: Total energy output of last month.

This Day: Total energy output during this Day.

Last Day: Total energy output of last Day.

Display

Duration

Description

Table 6.1 Information Indicator

5.2 Stop the Inverter

Figure 6.2 Lock and Unlock the Screen of LCD

(a) (b)

.17. .18.

6.3 Settings

The following submenus are displayed when the Settings menu is selected:

1.Set Time

2.Set Address

3.Clear Energy

4.Restore Settings

6.3.1 Setting Time

This function allows time and date setting. When this function is selected, the LCD will

display a screen as shown in Figure 6.3.

NEXT=<ENT> OK=<ESC>

01-01-2010 16:37

Figure 6.3 Set Time

Press the UP/DOWN keys to set time and date. Press the ENTER key to move from one

digit to the next (from left to right). Press the ESC key to save the settings and return to

the previous menu.

6.3.2 Setting Address

YES=<ENT> NO=<ESC>

Set Address: 02

Figure 6.4 Set Address

Press the UP/DOWN keys to set the address. Press the ENTER key to save the settings.

Press the ESC key to cancel the change and return to the previous menu.

6.3.3 Clearing Energy

This function is used to clear energy (total energy, this month energy and last month energy).

When Clear Energy is selected, the screen will show the following figure (Figure 6.5).

Are you sure?

YES=<ENT> NO=<ESC>

Figure 6.5 Clear Energy

Press the ENTER key to confirm before executing clearing energy. Press the ESC key to

cancel the change and return to the previous menu.

6.3.4 Restoring Settings

.19. .20.

6. Operation 6. Operation

Do NO T use t his fun ction . The i nvert er is pre set to st andar d AS4 77 7, wh ic h mu st N OT be

cha nged. Ac cess to t his fun ction m ay caus e damag e to the in verte r and may v oid the

war ranty.

Thi s funct ion is us ed to set t he addr ess of an i nvert er conn ected t o PC for co mmuni catio n

pur pose. T he a dd res s nu mb er c an be a ssign ed from “0 1”to “99”(se e Figur e 6.4).

The d efaul t addre ss numb er of Sol is-2. 5K-2G i s “01”.

6.4 Advanced Info - Technicians Only

Select Advanced Info. from the Main Menu to display a screen that requires a password

(see Figure 6.8).

YES=<ENT> NO=<ESC>

Password: 0000

Figure 6.8 Advanced Info. Login

Type in the correct password and press the ENTER key to access the following information:

1.Alarm Message

2.Temperature

3.STD NO.

4.Version

5.Communication Data

Screens can be scrolled manually by pressing the UP/DOWN keys. Pressing the ENTER

key gives access to submenu. Press the ESC key to return to the Main Menu.

NOTE:

The default password of Solis-2.5K-2G is (0010)

6.4.1 Alarm Message

The display shows 10 latest alarm messages (see Figure 6.9). Screens can be scrolled

manually by pressing the UP/ DOWN keys. Press the ESC key to return to the previous

menu.

Alarm0: OV-G-V

Time: 27-11 Data: 7171

Figure 6.9 Alarm Message

6.4.3 STD NO.

The screen shows the reference standard of Solis-2.5K-2G (see Figure 6.11).

Standard: AS4777

Figure 6.11 Standard of the Inverter

6.4.4 Version

The screen shows the model version and the software version of Solis-2.5K-2G (see Figure 6.12).

Model: 07

Software Version: 8E06

Figure 6.12 Model Version and Software Version

6.4.5 Communication Data

The screen shows the internal data of Solis-2.5K-2G (see Figure 6.13), which is for service

technicians only.

01-05: 01 25 E4 9D AA
06-10: C2 B5 E4 9D 55

Figure 6.13 Communication Data

6.5 Advanced Settings - Technicians Only

Select Advanced Settings from the Main Menu to display a screen that requires a password.

Type in the correct password (refer to Section 6.4 if you do not know the password) and

press the ENTER key to access the following options:

1.Select Standard

2.Grid ON/OFF

3.New Password

.21. .22.

6. Operation 6. Operation

6.4.2 Temperature

The screen shows the power module temperature of Solis-2.5K-2G (see Figure 6.10).

Figure 6.10 Temperature of the Inverter

Temperature

046.6

℃

NOTE:

Access to this area is for fully qualified and accredited technicians only.
Unauthorized access to these areas may void the warranty.

NOTE:

Access to this area is for fully qualified and accredited technicians only.
Unauthorized access to these areas may void the warranty.

6.5.2 Grid ON/OFF

This function is used to start or stop the generation of Solis-2.5K-2G (see Figure 6.16).

Grid ON

Grid OFF

Figure 6.16 Set Grid ON/OFF

This function is used to select reference standard of grid (see Figure 6.14).

YES=<ENT> NO=<ESC>

Standard: AS4777

Figure 6.14

NOTE:

This function exists for technician use only.

NOTE:

You must set Grid OFF first (refer to Section 6.5.2) to use this function.

Press the UP/DOWN keys to select the standard (AS4777, VDE0126, UL1741, G83, User

-Def). Press the ENTER key to confirm the setting. Press the ESC key to cancel the change

and return to the previous menu.

Selecting the User-Def menu will access to the following submenu (see Figure 6.15):

OV-V: 240---270V

UN-V: 180---210V

OV-G-F: 50.3---52.0Hz(60.3—62.0Hz)

UN-G-F: 47.0---49.5Hz(57.0—59.5Hz)

NOTE:

The initial values of the User-Def standard are some reference values. They
are not indicating the values of the standard you are currently using.

Figure 6.15

Press the UP/DOWN keys to scroll through items. Press the ENTER key to edit the highlighted

item. Press the UP/DOWN keys again to change the setting. Press the ENTER key to save

the setting. Press the ESC key to cancel the change and return to the previous menu.

NOTE:

You must set Grid ON (refer to Section 6.5.2) before the new standard can
be used.

6.5.1 Selecting Standard

Screens can be scrolled manually by pressing the UP/DOWN keys. Press the ENTER key

to save the setting. Press the ESC key to return to the previous menu.

6.5.3 New Password

This function is used to change the password of Solis-2.5K-2G. Enter the new password you want

to set (see Figure 6.17).

Enter New Password

Password: 0000

Figure 6.17 Enter the Password

And then verify your new password (see Figure 6.18).

Verify New Password

Password: 0000

Figure 6.18 Verify the Password

The password has been changed successfully (see Figure 6.19).

Verify New Password

Done!

Figure 6.19 Successful Password Change

If the new password is failed to be verified, the screen will display an error message (see

Figure 6.20):

Warning:

Verify error!

Figure 6.20 Failed Password Change

.23. .24.

6. Operation 6. Operation

OV-V: 262V

UN-V: 210V

NOTE:

Your inverter must be set to AS4777 only.

7. Maintenance

8. Trouble Shooting

Solis-2.5K-2G does not require any regular maintenance from the user. However, impurities such

as dirt may affect the heat accumulation of the inverter and hence its performance. The dirt

on the inverter can be cleaned with a soft brush.

CAUTION:
Do not touch the heat sink when the inverter is operating. Some parts may be hot
and cause burns. Turn OFF your inverter (refer to Section 5.2) and let it cool down
before you do any maintenance or cleaning of inverter.

The LCD and the LED status indicator lights can be cleaned with a damp cloth if they are too

dirty to be read.

NOTE:

Never use any solvents, abrasives or corrosive materials to clean the inverter.

Alarm Message

OV-G-V

UN-G-V

OV-G-F

UN-G-F

G-IMP

NO-Grid

OV-DC

OV-BUS

UN-BUS

SHORT-PRO

INI-PRO

TEM-PRO

GROUND-PRO

Failure Scenario

Over grid voltage

Under grid voltage

Over grid frequency

Under grid frequency

Grid impedance high

No grid

Over DC voltage

Over DC bus voltage

Under DC bus voltage

Short circuit fault

System initial fault

Over Temperature

Ground fault

Table 8.1 Failure Scenarios

NOTE:

If your Solis-2.5K-2G gives any alarm message listed in Table 8.1, turn off your
inverter (refer to Section 5.2 to stop your inverter) and wait for 30 minutes
before restarting it (refer to Section 5.1 to start your inverter). If the failure
has not been cleared, contact your local distributor or the service center.
Please have the following information ready with you before you contact us.

1. Serial number of Solis-2.5K-2G;

2. The distributor/dealer of Solis-2.5K-2G (if available);

3. Installation date.

4. The description of problem (i.e. the alarm message displayed on the LCD and the status

of the LED status indicator lights. Other readings obtained from the Information submenu

(refer to Section 6.2) will also be helpful.);

5. Sy stem de sign fo r the sol ar PV arr ay conf igura tion (e .g. num ber of pa nels, c apaci ty of

pan els, nu mber of s tring s, etc. );

6. Your c ontac t detai ls.

Trouble Shooting

Solis-2.5K-2G is designed in accordance with the standards of grid-tied operation, safety

requirements and electromagnetic compatibility. Before being delivered to the customer,

Solis-2.5K-2G has been subjected to several tests to ensure its optimal operation, reliable

performance and good durability.

If an operational failure occurs, the LCD screen will display an alarm message. In this

case, the inverter stops feeding into the grid. The possible failure scenarios and their

corresponding alarm messages are listed in Table 8.1:

.25. .26.

9. Specifications

.27.

Table 9 .1 Spec ifica tions

The max DC input voltage:

MPPT operation range:

DC nominal voltage:

The max dc input current:

Rating output power:

The transient max power:

Rating grid voltage:

The grid voltage range:

Operation phase:

Rating grid output current:

Output power factor:

Grid current THD:

The dc injection current:

Rating grid frequency:

Efficiency:

Protection :

Size:

Weight:

Topology:

Internal consumption:

Running temperature:

Ingress protection:

Interface:

Design lifetime:

2.5kW

2.8kW

230Vac

180~270Vac

Single phase

10.9Aac

>0.99

<4%

<20mA

50Hz/60Hz

>97%

Isolation protection; temperature protection; short circuit protection; Etc

339Wx565Hx172.5D（mm）

14.5kg

Transformerless

<1W(Night)

-25℃~60℃

IP65

RS485/Wifi or GP RS(Optional)

>20 years

100-500Vdc

300Vdc

10Adc

600V

MPPT mode:

Max power point tracking

Maximum input power:

2.5kW