Sofar 255KTL-HV-TRO User manual

Shenzhen SOFARSOLAR Co., Ltd.

Solar Grid-tied Inverter

Product Model: SOFAR 255KTL-HV-TRO

User manual

SOFAR 255KTL-HV-TRO User Manual

All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.

Contents

Preface ........................................................................................................................I

1. Basic Safety Information.............................................................................. - 1 -

1.1. Requirement for Installation and Maintenance............................- 1 -

1.2. Symbols and signs .......................................................................- 4 -

2. Product Characteristics................................................................................. - 6 -

2.1. Intended Use................................................................................- 6 -

2.2. Function Description ...................................................................- 9 -

2.3. Electrical block diagram............................................................- 11 -

3. Inverter Storage .......................................................................................... - 12 -

4. Installation.................................................................................................. - 13 -

4.1. Installation Process....................................................................- 13 -

4.2. Checking Before Installation.....................................................- 13 -

4.3. Tools ..........................................................................................- 15 -

4.4. Determining the Installation Position........................................- 17 -

4.5. Moving of inverter.....................................................................- 20 -

4.6. Installation .................................................................................- 22 -

5. Electrical Connection.................................................................................. - 27 -

5.1. Electrical Connection.................................................................- 28 -

5.2. Terminal Connector ...................................................................- 28 -

5.3. Grounding Connection (PE) ......................................................- 29 -

5.4. Connect grid side of inverter(AC-Output).................................- 30 -

5.4.2 Wiring Terminal and Precautions........................................... - 31 -

5.5. Connect the power cord of the tracking system (optional)........- 35 -

5.6. Connect PV side of inverter（DC-Input）................................- 36 -

5.7. Communication Connection......................................................- 39 -

6. Commissioning of inverter ......................................................................... - 45 -

6.1. Cable Connection Inspection.....................................................- 45 -

6.2. Start Inverter..............................................................................- 45 -

7. Operation interface ..................................................................................... - 46 -

SOFAR 255KTL-HV-TRO User Manual

All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.

7.1. Operation and Display Panel .....................................................- 46 -

7.2. Standard Interface......................................................................- 47 -

7.3. Main Interface............................................................................- 50 -

7.4. Updating Inverter Software .......................................................- 53 -

8. Trouble shooting and maintenance ............................................................. - 55 -

8.1. Troubleshooting.........................................................................- 55 -

8.2. Maintenance...............................................................................- 61 -

8.3. PID.............................................................................................- 61 -

8.4. SVG...........................................................................................- 62 -

9. Technical Data ............................................................................................ - 63 -

9.1. Input parameters (DC)...............................................................- 63 -

9.2. Output Parameter (AC)..............................................................- 64 -

9.3. Performance Parameter..............................................................- 65 -

9.4. General Data..............................................................................- 66 -

10. Quality Assurance................................................................................... - 67 -

SOFAR 255KTL-HV-TRO User Manual

All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.

Preface

Notice

The products, services or features you purchased shall be subject to the company's

commercial contracts and terms. All or part of the products and services described

in this document may not within the scope of your purchase. Unless additional

terms and conditions in your contract, the company does not make any statement or

guarantee on the contents of this document.

Save this Instruction

This manual must be considered as an integral part of the equipment. Customer can

print the electronic version to hard copy and keeping properly for future reference.

Anyone who operates the device at any time must operate in accordance with the

requirements of this manual.

The copyright of this manual belongs to Shenzhen SOFARSOLAR Co., Ltd. Any

corporation or individual should not plagiarize, partially cope or fully copy

(including software, etc.), not allow to duplication and publishment in any form and

interpretation. This manual subject to modify according to user's or customer's

feedback. Please check our website at http://www.sofarsolar.com for lasted version.

Document Updates

V1.1 2023-04-06

●Modified version

Shenzhen SOFARSOLAR Co., Ltd

Location: building 11, Gaoxinqi science and technology building, District

67,XingDong Community, XinAn Street, BaoAn District, Shenzhen, China.

Postcode: 518000

Company Website: www.sofarsolar.com

Email: service@sofarsolar.com

SOFAR 255KTL-HV-TRO User Manual

All copy reserved ©Shenzhen SOFARSOLAR Co., Ltd.

⚫Outline

This manual is an integral part of SOFAR 255KTL-HV-TRO. It describes the

assembly, installation, commissioning ,maintenance and failure of the product.

Please read it carefully before operating.

⚫Scope of Validity

This manual contains important instructions for:

SOAFR 255KTL-HV-TRO

⚫Target Group

This manual is for qualified electricians. The tasks described in this manual

only can be performed by qualified electricians.

⚫Symbols Used

The following types of safety instruction and general information appear in this

document as described below:

“Danger”indicates a hazardous situation which, if not avoided,

will result in death or serious injury.

Danger

“Warning”indicates a hazardous situation which, if not

avoided, could result in death or serious injury.

Warning

“Caution”indicates a hazardous situation which, if not

avoided, could result in minor or moderate injury.

Caution

“Attention”indicates there are potential risks, if fail to prevent,

may lead to equipment cannot normally or property damage.

Attention

“Note”provides additional information and tips that are

valuable for the optimal operation of the product.

Note

SOFAR 255KTL-HV-TRO User Manual

- 1 -

1.Basic Safety Information

Outlines of this Chapter

Please read the instruction carefully. Faulty operation may cause serious injury or

death.

Safety Instruction

Introduce the safety instruction during installation and operation of SOFAR

255KTL-HV-TRO.

Symbols Instruction

This section gives an explanation of all the symbols shown on the inverter and on

the type label.

1.1. Requirement for Installation and Maintenance

Installation of SOFAR 255KTL-HV-TRO on-grid inverter must conform with laws,

regulations, codes and standards applicable in the jurisdiction.

Before installing and adjusting the produce, please read all of instructions,

cautions and warnings in this manual

Before connecting the product to the electrical utility grid, contact the local utility

company for allowance. Also, this connection must be made only by qualified

electrician.

If the failure persists, please contact the nearest authorized maintenance center. If

you don't know which service center is closest to you, please contact your local

distributor. Don't repair the product by yourself, which may lead serious injury or

damage.

Qualified Person

When inverter is working, it contains lethal voltages and went hot in some area.

Improper installation or misoperation could cause serial damage and injury. To

If you have any question or problem when you read the

following information, please contact Shenzhen

SOFARSOLAR CO., Ltd.

Note

SOFAR 255KTL-HV-TRO User Manual

- 2 -

reduce the risk of personal injury and to ensure the safe installation and operation

of the product, only a qualified electrician is allowed to execute transportation,

installation, commissioning and maintenance. Shenzhen SOFARSOLAR Co, Ltd

does not take any responsibility for the property destruction and personal injury

because of any incorrect use.

Label and Symbols

SOFAR 255KTL-HV-TRO has type label attach the side of product which contact

important information and technical data, the type label must permanent attached

to the product.

SOFAR 255KTL-HV-TRO has warming symbol attache the product which contact

information of safety operation. The warming symbol must permanent attached to

the product.

Installation location requirement

Please install the inverter according to the following section. Place inverter in an

appropriate bearing capacity objects (such as solid brick wall, or strength

equivalent mounting surface, etc.) and make sure inverter vertical placed. A proper

installation location must have enough space for fire engine access in order for

maintenance if faulty occur. Ensure the inverter is installed in a wall ventilated

environment and have enough air cooling cycle. Air humidity should less than

90%.

Transportation Requirement

Inverter is in the good electrical and physical condition when it ship out from

factory. During transport, inverter must be placed in its original package or other

SOFAR 255KTL-HV-TRO User Manual

- 3 -

proper package. Transportation company should responsible for any damage

during transport period.

If you find any packing problems that may cause the damage of inverter or any

visible damage, please notice the responsible transportation company immediately.

You can ask your installer or SOFARSOLAR for help if necessary.

Electrical Connection

Please comply with all the current electrical regulations about accident prevention

in dealing with the current inverter.

Before the electrical connection, use opaque material to cover the

PV modules or disconnect PV string DC switch. PV arrays will

produce dangerous voltage if it is exposure under sun

Danger

All operation must accomplish by certified electrical engineer

⚫Must be trained;

⚫Completely read the manual operation and understand all

information

Warming

Must get permission by local utility company before connecting to

grid and the connection must be done by certified electrical

engineers

Attention

Operation

Touching the utility grid or the terminal conductors can lead to

lethal electric shock or fire!

Do not touch non-insulated cable ends, DC conductors and any

live components of the inverter.

Attention to any electrical relevant instruction and document.

Danger

Enclosure or internal components may get hot during operation.

Do not touch hot surface or wear insulated gloves.

Keep it away from kids !

Attention

Maintenance and repair

Before any repair work, turn OFF the AC circuit breaker between

the inverter and electrical grid first, then turn OFF the DC switch.

After turning OFF the AC circuit breaker and DC switch wait for

at least 5 minutes before carry any maintenance or repair work.

Danger

SOFAR 255KTL-HV-TRO User Manual

- 4 -

Inverter should not work again until removing all faults. If any

repair work is required, please contact local authorized service

centre.

Should not open the inverter cover without authorized permit,

SOFARSOALR does not take any responsibility for that.

Attention

EMC/Noise Level

Electromagnetic compatibility (EMC) refers to that on electrical equipment

functions in a given electromagnetic environment without any trouble or error,

and impose no unacceptable effect upon the environment. Therefore, EMC

represents the quality characters of an electrical equipment.

⚫The inherent noise-immune character: immunity to internal electrical noise

⚫External noise immunity: immunity to electromagnetic noise of external

system

⚫Noise emission level: influence of electromagnetic emission upon

environment

Electromagnetic radiation from inverter may be harmful to health!

Please do not continue to stay away from the inverter in less than

20cm when inverter is working.

Danger

1.2. Symbols and signs

High voltage of inverter may be harmful to health!

Only certified engineer can operate the product;

Juveniles, Disable, should not use this product;

Danger

Caution of burn injuries due to hot enclosure!

Only touch the screen and pressing key of the inverter while it is

working.

Caution

PV array should be grounded in accordance to the requirements of

the local electrical grid company.

Attention

Ensure the maximum DC voltage input is less than the maximum

inverter DC voltage (including in low temperature condition). Any

damage cause by overvoltage, SOFARSOLAR will not take the

responsibility including warranty.

Warning

SOFAR 255KTL-HV-TRO User Manual

- 5 -

Signs on the Product and on the Type Label

SOFAR 255KTL-HV-TRO has some safety symbols on the inverter. Please read

and fully understand the content of the symbols before installation.

Symbols

Name

Explanation

This is a residual

voltage in the inverter!

After disconnect with the DC side, there

is a residual voltage in the inverter,

operator should wait for 10 minutes to

ensure the capacitor is completely

discharged.

Caution of high voltage

and electric shock

The products operates at high

voltages. Prior to performing any work

on the product, disconnect the product

from voltage sources. All work on the

product must be carried out by qualified

persons only.

Caution of hot surface

The product can get hot during

operation. Avoid contact during

operation. Prior to performing any work

on the product, allow the product to cool

down sufficiently

Comply with the

Conformite Euroeenne

(CE) Certification

The product comply with the CE

Certification

Grounding Terminal

This symbol indicates the position for

the connections of an additional

equipment grounding conductor

Observe the

documentation

Read all documentation supplied with

the product before install

Positive pole and

negative pole

Positive pole and negative pole of the

input voltage (DC)

Temperature

Indicated the temperature allowance

range

RCM logo

RCM (Regulatory Compliance Mark)

The product complies with the

requirements of the applicable

Australian standards.

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