SOLAX X3 Series Solar Inverter User Manual

SOLAX X3 Series Solar Inverter User Manual

www.solaxpower.com

1 Notes on this Manual

1.1 Scope of Validity

This manual is an integral part of X3 Series, It describes the assembly, installation, commissioning, maintenance and failure of the product. Please read it carefully before operating.

Note: “4.0” means 4.0kW. “T” means “dual” MPPT strings. “S” means “single MPPT. “D” means with “DC Switch”, “N” means without “DC Switch”. Keep this manual at where is accessible all the time.

1.2 Target Group

This manual is for qualified electricians. The tasks described in this manual only can be performed by qualified electricians.

1.3 Symbols Used

2 Safety

2.1 Appropriate Usage

The X3 Series are PV inverters which can convert the DC current of the PV generator into AC current and feed it into the public grid.

► Surge protection devices (SPDs) for PV installation

WARNING ! Over-voltage protection with surge arresters should be provided when the PV power system is installed. The grid connected inverter is fitted with SPDs in both PV input side and MAINS side.

Lightning will cause a damage either from a direct strike or from surges due to a nearby strike. Induced surges are the most likely cause of lightning damage in majority or installations, especially in rural areas where electricity is usually provided by long overhead lines. Surge may be included on both the PV array conduction and the AC cables leading to the building.

Specialists in lightning protection should be consulted during the end use application. Using appropriate external lightning protection, the effect of a direct lightning strike into a building can be mitigated in a controlled way, and the lightning current can be discharged into the ground.

Installation of SPDs to protect the inverter against mechanical damage and excessive stress include a surge arrester in case of a building with external lightning protection system (LPS) when separation distance is kept.

To protect the DC system, surge suppression device (SPD type2) should be fitted at the inverter end of the DC cabling and at the array located between the inverter and the PV generator, if the voltage protection level (VP) of the surge arresters is greater than 1100V, an additional SPD type 3 required for surge protection for electrical devices.

Safety To protect the AC system, surge suppression devices (SPD type2) should be fitted at the main incoming point of AC supply (at the consumer’s cut-out), located between the inverter and the meter/distribution system; SPD (test impulse D1) for signal line according to EN 61632-1.

All DC cables should be installed to provide as short a run as possible, and positive and negative cables of the string or main DC supply should be bundled together. Avoiding the creation of loops in the system. This requirement for short runs and bundling includes any associated earth bundling conductors.

Spark gap devices are not suitable to be used in DC circuits once conducting, they won’t stop conducting until the voltage across their terminals is typically below 30 volts.

► Anti-Islanding Effect
Islanding effect is a special phenomenon that grid-connected PV system still supply power to the nearby grid when the voltage loss is happened in the power system. It is dangerous for maintenance personnel and the public. X3 series provide Active Frequency Drift(AFD) to prevent islanding effect.

2.2 Important Safety Instructions

Danger! Danger to life due to high voltages in the inverter!

• All work must be carried out by qualified electrician.
• The appliance is not to be used by children or persons with reduced physical sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.
• Children should be supervised to ensure that they do not play with the appliance.

Caution! Danger of burn injuries due to hot enclosure parts!

• During operation, the upper lid of the enclosure and the enclosure body may become hot.
• Only touch the lower enclosure lid during operation.

Caution! Possible damage to health as a result of the effects of radiation!

• Do not stay closer than 20 cm to inverter for any length of time.

Note! Grounding the PV generator.

• Comply with the local requirements for grounding the PV modules and the PV generator. Sola X recommends connecting the generator frame and other electrically conductive surfaces in a manner which ensures continuous conduction and ground these in order to have optimal protection of system and persons.

Warning!

• Ensure input DC voltage Max. DC voltage .Over voltage may cause permanent damage to inverter or other losses, which will not be included in warranty!

Warning

• Authorized service personnel must disconnect both AC and DC power from X3 series before attempting any maintenance or cleaning or working on any circuits connected to the X3 series.

WARNING ! Do not operate the inverter when the device is running.

WARNING ! Risk of electric shock!

• Prior to the application, please read this section carefully to ensure correct and safe application. Please keep the user manual properly.
• Use only attachments recommended or sold by SolaX. Otherwise may result in a risk of fire, electric shock, or injury to person.
• Make sure that existing wiring is in good condition and that wire is not undersized.
• Do not disassemble any parts of inverter which are not mentioned in installation guide. It contains no user-serviceable parts. See Warranty for instructions on obtaining service. Attempting to service the X3 Series inverter yourself may result in a risk of electric shock or fire and will void your warranty.
• Keep away from flammable, explosive materials to avoid fire disaster.
• The installation place should be away from humid or corrosive substance.
• Authorized service personnel must use insulated tools when installing or working with this equipment.
• PV modules shall have an IEC 61730 class A rating.
• Never touch either the positive or negative pole of PV connecting device.
• Strictly prohibit touching both of them at the same time.
• The unit contains capacitors that remain charged to a potentially lethal voltage after the MAINS and PV supply has been disconnected.
• Hazardous voltage will present for up to 5 minutes after disconnection from power supply.
• CAUTION-RISK of electric shock from energy stored in capacitor,. Never operate on the solar inverter couplers, The MAINS cables, PV cables or the PV generator when power is applied. After switching off the PV and Mains, always wait for 5minutes to let the intermediate circuit capacitors discharge before you unplug
• DC and MAINS couplers. When accessing the internal circuit of solar inverter, it is very important to wait 5minutes before operating the power circuit or demounting the electrolyte capacitors inside the device. Do not open the device before hand since the capacitors require time to sufficiently discharge!
• Measure the voltage between terminals UDC+ and UDC- with a multi-meter (impedance at least 1Mohm) to ensure that the device is discharged before beginning work (35VDC) inside the device.

PE Connection and Leakage Current

• The end-use application shall monitor the protective conductor by residual current operated protective device (RCD) with rated fault current Ifn240mA which automatically disconnects the device in case of a fault.
• DC differential currents are created (caused by insulation resistance and through capacities of the PV generator). In order to prevent unwanted triggering during operation, the rated residual current of the RCD has to be min 240mA.
  The device is intended to connect to a PV generator with a capacitance limit of approx. 700nf.

WARNING! High leakage current! Earth connection essential before connecting supply.

• Incorrect grounding can cause physical injury, death or equipment malfunction and increase electromagnetic.
• Make sure that grounding conductor is adequately sized as required by safety regulations.
• Do not connect the ground terminals of the unit in series in case of a multiple installation. This product can cause current with a d.c. component, Where a residual current operated protective (RCD) or monitoring (RCM) device is used for protection in case of direct or indirect contact, only an RCD or RCM of type B is allowed on the supply side of this product. For United Kingdom
• The installation that connects the equipment to the supply terminals shall comply with the requirements of BS 7671.
• Electrical installation of PV system shall comply with requirements of BS 7671 and IEC 60364-7-712.
• No protection settings can be altered.
• User shall ensure that equipment is so installed, designed and operated to maintain at all times compliance with the requirements of ESQCR22(1)(a). For Australia and New Zealand
• Electrical installation and maintenance shall be conducted by licensed electrician and shall comply with Australia National Wiring Rules.

2.3 Explanation of Symbols

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

• Symbols on the Inverter

• Symbols on the Type Label

2.4 CE Directives

This chapter follows the requirements of the European low voltage directives, which contains the safety instructions and conditions of acceptability for the endues system, which you must follow when installing, operating and servicing the unit. If ignored, physical injury or death may follow, or damage may occur to the unit. Read this instructions before you work on the unit. If you are unable to understand the dangers, warnings, cautions or instructions, please contact an authorized service dealer before installing. Operating and servicing the unit.

The Grid connected inverter meets the requirement stipulated in Low Voltage Directive (LVD) 2014/35/EU and Electromagnetic Compatibility (EMC) Directive 2014/30/EU. The unit is based on: EN 62109-1:2010 ; EN 62109-2:2011 ; IEC 62109-1(ed.1) ; IEC62109-2(ed.1) EN 61000-6-3:2007+A:2011 ; EN 61000-6-1:2007 ; EN 61000-6-2:2005 In case of installation in PV system, start-up of the unit (i.e. start of designated operation) is prohibited until it is determined that the full system meets the requirements stipulated in EC Directive (2014/35/EU,2014/30/EU, etc.) The grid connected inverter leave the factory completely connecting device and ready for connection to the mains and PV supply ,the unit shall be installed in accordance with national wiring regulations. Compliance with safety regulations depends upon installing and configuring system correctly, including using the specified wires. The system must be installed only by professional assemblers who are familiar with requirements for safety and EMC. The assembler is responsible for ensuring that the end system complies with all the relevant laws in the country where it is to be used. The individual subassembly of the system shall be interconnected by means of the wiring methods outlined in national/international such as the national electric code (NFPA) No.70 or VDE regulation 0107.

3. Introduction

3.1 Basic features

Thanks for your purchasing with SolaX X3 Serial inverter. The X3 Series inverter is one of the finest inverters on the market today, incorporating state-of-the-art technology, high reliability, and convenient control features.

• Advanced DSP control technology.

• Utilize the latest high-efficiency power component.

• Optimal MPPT technology.
  – Two independent MPP Tracking.
  – Wide MPPT input range.

• Advanced anti-islanding solutions. IP65 protection level.

• Max. efficiency up to 98.5%.EU efficiency up to 98%. THD<2%.

• Safety &Reliability: transformer less design with software and hardware protection.

• Export control.

• Power factor regulation.

• Friendly HMI.
  – LED status indications.
  – LCD display technical data, Human-machine interaction through press key.
  – PC remote control.
  – Upgrade through USB interface.
  – Pocket Wi-Fi/Lan monitoring.
  – Control loads’ switch intelligently by RF.
  – Energy conservation.

3.2 Terminals of inverter

3.3 Dimension

▶ Dimension

4. Technical Data

4.1 DC input

4.2 AC output

4.3 Efficiency, Safety and Protection

4.4 General Data

5. Installation

5.1 Check for Transport Damage

Make sure the inverter is intact during transportation. If there are some visible damages, such as cracks, please contact your dealer immediately.

5.2 Packing List

Open the package and fetch out the product, check the accessories at first. The packing list shows as below.

5.3 Installation Precaution

X3 Series inverter is designed for outdoor installation (IP 65). Make sure the installation site meets the following conditions:

• Not in direct sunlight.
• Not in areas where highly flammable materials are stored.
• Not in potential explosive areas.
• Not in the cool air directly.
• Not near the television antenna or antenna cable.
• Not higher than altitude of about 2000m above sea level.
• Not in environment of precipitation or humidity
• Be sure the ventilation is good enough.
• The ambient temperature in the range of -25 to +60.
• The slope of the wall should be within ±5°.
• The wall hanging the inverter should meet conditions below:

1. solid brick/concrete, or strength equivalent mounting surface;
2. Inverter must be supported or strengthened if the wall’s strength isn’t enough(such as wooden wall, the wall covered by thick layer of decoration)

Please avoided direct sunlight, rain exposure, snow laying up during installing and operating.

5.4 Installation Steps

▶ Preparation

Below tools are needed before installation.

Installation tools : crimping pliers for binding post and RJ 45, screwdriver, manual wrench and 10 driller.

▶ Step 1: Screw the wall bracket on the wall

• a) Use the wall bracket as a template to mark the position of the 4 holes on the wall.

• b) Drill holes with driller, make sure the holes are deep enough (at least 60mm) for installation, and then tighten the expansion tubes.

• c) Install the expansion tubes in the holes, and tighten them. Then install the wall bracket by using the expansion tubes.
  ▶ Step 2: Match the inverter with wall bracket

• d) Hang the inverter over the bracket, move the inverter close to it, slightly lay down the inverter, and make sure the 4 mounting bars on the back are fixed well with the 4 grooves on the bracket.

5.5 Connection of the Inverter

5.5.1 The Main Steps to Connect to the Inverter

▶ PV String Connection
X3 series inverter have a couple of PV connectors which can be connected in series into 2-strings PV modules. Please select PV modules with excellent function and reliable quality. Open circuit voltage of module array connected should be Max. DC (table as follow) input voltage, and operating voltage should be within the MPPT voltage range.

• Connection Steps

▶ Grid Connection

X3 series inverter are designed for three phase grid. Rated grid voltage is 230V, frequency is 50/60Hz. Other technical requests should comply with the requirement of the local public grid.

• Connection Steps

a) Check the grid voltage and compare with the permissive voltage range (refer to technical data).
b) Disconnect the circuit-breaker from all the phases and secure against reconnection.
c) Trip the wires:
– Trip all the wires to 52.5mm and the PE wire to 55mm.
– Use the crimping pliers to trip 12mm of insulation from wire ends as below.

Selection of Fuses and Cables
Main cable(AC line cable)shall be short circuit protected and thermal overload protected.

Always fit the input cable with fuse. Normal gag(US:CC or T)fuses will protect the input cable in short circuit situation. They will also prevent damage to adjoining equipment. Dimension the fuses according to local safety regulations, appropriate input voltage and the related current of the solar inverter.

AC output protected by external fuse(gG rated current 16A/600VAC for 4.0KW /5.0KW/6.0KW; 20A/600VAC for 7.0KW / 8.0KW / 9.0KW;25A/600VAC for 10.0KW)provides in all live connections to the AC supply.

The rated short circuit breaking capacity of the above protective device shall be at least equal to the prospective fault current at the point of installation. See section technical data of this manual details.

AC output cable: Cu; R,S,T, N+PE: 34.0mm2+4.0mm2 for 4.0KW/5.0KW/6.0KW and 25.3mm2+5.3mm2 for 7.0KW/8.0KW/9.0KW; 3*5.3mm2+5.3mm2 for 10.0KW @40 ambient temperature with a max length of 5m, with operating time of the fuses is less than 5 seconds, installation method B2 according to EN60204-1:2006, annex D: cable in conduit cable trucking system, number of loaded circuit only one. Use H07RNF(cord designation 60245 IEC66) for an ambient temperature of 40 or less and use 90 wire for ambient temperature between 40 and 60.

Note 1: For condition differing form those mentioned above, dimension the cables according to local safety regulations, appropriate input voltage and the load and the load current of the unit.(You can choose a thicker cable but the fuses must rated according to the cable.)
Note 2: Fuses must be approved by Notified Body.

Therefore the current-carrying capacity of the components and sub-assemblies provided in the end-use system(connectors, cables, junction box, switch ger, etc.) and the reverse current PV modules shall be considered based on the feedback current and reverse current. The direct current(DC) circuit breaker or fuse between each solar generator and inverter shall be provided based on solar inverter input ratings. Select DC cables based in the above inverter back-feed current and ISC PV rating and Vmax ratings.

▶ Earth Connection
Screw the ground screw with screwdriver shown as follow.

5.5.2 Communication interface

This product has a series of communication interfaces: such as WIFI, RF, RS485/Meter, DRM and USB for upgrading for human and machine communication. Operating information like output voltage, current, frequency, faulty information, etc., can be delivered to PC or other monitoring equipment via these interfaces.

(1) WiFi/Lan(Optional)
This inverter provides a WiFi/Lan port which can collect information from inverter including status, performance and updating information to monitoring website via connecting Pocket WiFi/Pocket Lan( purchase the product from supplier if needed)

Connection steps: Please check the Pocket WiFi user manual for more details.

(2) RF(Optional)
The inverter provides a RF(radio frequency) interface which can make a load be switched or operated in a specified duration via connecting an external Smart plug(purchase the product from supplier if needed.) so that the load mostly consumes PV energy and incurs the lowest-possible energy costs during operation. Please check the Smart Plug user manual for the detail of connection steps.

(3)RS 485/Meter
a. RS 485

Note It is necessary to connect meter to inverter otherwise inverter will shutdown with a “Meter fault” alert. The smart meter must be authorized by Solax, any third party or non-authorized meter may not match with the inverter. Solax will not take the responsibility if the meter is unavailable.

RS 485 Connection Steps:

1. Prepare RJ45 connector and a communication cable.
2. Trip the insulation from the communication cable.
3. Let the communication cable pass though the waterproof connector with RJ45, then insert it into the RJ45 connector following the PIN definition rule.

4. Crimp the RJ45 connector with the crimping plier.
5. Insert the cable into the RS 485/Meter port of the inverter, and tighten the waterproof connector.

Meter Connection Steps: Please see the Quick Guide for three-Phase Meter Installation for details.

(4) DRM

DRM is provided to support several demand response modes by giving control signals as below.

Connection Steps:

1. Prepare RJ45 connector and a communication cable.
2. Trip the insulation from the communication cable.
3. Let the communication cable pass though the waterproof plug, then insert it into the RJ45 connector following the PIN definition rule.
4. Crimp the RJ45 connector with the crimping plier.
5. Insert the cable into the DRM port of the inverter, and tighten the waterproof plug.

(5) Upgrade
User can update the inverter system through an U-disk.

Warning!
Make sure the input voltage is more than 140V (in good illumination condition), or it may result in failing during updating.

Upgrade Steps:
1) Please contact our service support to get the update file, and extract it into your U-disk as the following file path: “updateARM618.00105.00_MIC_ARM_Vx.xx_xxxxxxxx.usb”; “updateDSP618.00103.00_MIC_DSP_Vx.xx_xxxxxxxx.hex”. Note: Vx.xx is version number, xxxxxxxx is file completion dates.

Warning!
Make sure the directory is in accordance with above form strictly! Do not modify the program file name ! Or it may cause the inverter not work anymore !
2) Make sure the DC switch is off and the AC is disconnected with grid. Unscrew the waterproof lid of Upgrade port by straight screwdriver as below.

3. then insert U-disk into the USB port on the bottom of the inverter. Then turn on DC switch or connect the PV connector, the LCD will show picture as below.

4. Press up and down to select the one that you want to update and press “OK” to confirm to update.
5. After the upgrade is complete, please remember to turn off the DC switch or disconnect the PV connector, then pull off the U-disk, screw the waterproof lid.

Warning!
During updating, don’t turn off the DC switch or disconnect the PV connector, if the updating is stopped due to PV power failure, do not unplug the U-disk until the PV power comes, update will continue. .if the updating is stopped due to other reasons, reinsert the usb drive to continue the update.

5.6 Run the inverter

Start inverter after checking all below steps:

• a) Check that device is fixed well on the wall.
• b) Make sure all the DC breakers and AC breakers are disconnected.
• c) AC cable is connected to grid correctly.
• d) All PV panels are connected to inverter correctly, DC connectors which are not used should be sealed by cover.
• e) Turn on the external AC and DC connectors.
• f ) Turn on the DC switch to the “ON” position.

Start inverter

• Inverter will start automatically when PV panels generate enough energy.
• Check the status of LED indication and LCD screen, the LED indication should be blue and the LCD screen should display the main interface.
• If the LED indication is not blue, please check the below:
  – All the connections are right.
  – All the external disconnect switches are closed.
  – The DC switch of the inverter is in the “ON” position.

Below is the three different states when operating, which means inverter starting up successfully.
Waiting: Inverter is waiting to checking when DC input voltage from panels is greater than 100V(lowest start-up voltage) but less than 140V(lowest operating voltage).
Checking: Inverter will check DC input environment automatically when DC input voltage from the PV panels exceeds 140V and PV panels have enough energy to start inverter.
Normal: Inverter begins to operate normally with blue light on. Meanwhile feedback energy to grid, LCD displays present output power. Enter the setting interface to follow the instructions when it is first time to start up.

Warning!
Power to the unit must be turned on only after installation work has been completed. All electrical connections must be carried out by qualified personnel in accordance with legislation in force in the country concerned.

Note! Please set the inverter if it is the first time to start up. Above steps are for the regular start of the inverter. If it is the first time to start up the inverter, you need to setup the inverter.

6. Operation Method

6.1 Control panel

6.2 LCD Function

Note: ” ⁕”Can be set by the end user. Others can only be set by the technical or the installer with the installer password.

6.3 LCD Operation

• LCD Digital Display The main interface is the default interface, the inverter will automatically jump to this interface when the system started up successfully or not operated for a period of time. The information of the interface is as below. “Power” means the timely output power; “Pgrid” means the power export to or import from the grid. “Today” means the power generated within the day. “Normal” shows the status of the inverter.

• Menu interface The menu interface is a transfer interface for user to get into other interface to finish the setting or getting the information. -User can get into this interface by pressing “OK” button when LCD displays the main interface. -User can select interface by moving the cursor with function button and press “OK” to confirm.

• Status
  The status function contains three aspects of the inverter, grid, solar and load.
  Press up and down to select and press “OK” to confirm the selection, press “ESC” to return to Menu

a) Grid This status shows the current grid condition such as voltage, current, output power and grid power. Pout measures the output of the inverter, Pgrid measures power export to or import from grid. Positive value means the power feeds into grid, negative value means the power used from the grid. Press up and down button to review the parameter, press “ESC” to return to Status .

b) Solar This status shows the real time PV condition of the system, such as input voltage, current and power situation of each PV input. Press up and down button to review parameter, Press “ESC” to return to Status.

c) Load If the inverter is plugged in a smart plug, this status shows the real time load power, include load1 power and load 2 power. Press up and down button to review parameter, Press “ESC” to return to Status.

• Settings Setting function is used for setting the inverter for time, connection, Grid and so on. Since this function will change the inverter’s parameter, the end user with the user password as”0000″ has the limited authority to change the setting. We need installer password to do most of the professional setting.

Password The default password is “0000”for end user, which only allows the user to review the current setting and some easy setting. If professional change is needed, please contact with the distributor or factory for installer password. We need to increase or decrease the word by pressing up or down button. Press OK to confirm an alternate to the next word. After word is confirmed, ,press “OK” to enter password.

Setting
If inputting the installer password, the information of the LCD interface is as below.

a) Safety
The user can set the safety standard here. According to different countries and grid tied standards. There is several standards for choice (May change without notice.)

b) Date time This interface is for user to set the system date and time. Increase or decrease the word by pressing up or down button. Press OK to confirm and alternate to next word. After all the words are confirmed. Press “OK” to enter the date and time.

c) New Password Installer can set the new password here. We need to increase or decrease the word by pressing up or down button. Press OK to confirm and alternate to next word. After word is confirmed., press “OK” to reset the password.

d) PV Connection This function can set the mode of PV input. There are two modes for choice: Comm and Multi. The “Comm” mode mean single MPP tracking, 2 MPPT working together; “Multi” means multi-MPP tracking, 2 MPPT work independently. Press up or down button to select and press “OK” to confirm.

e) Export control With this function the inverter can control energy exported to the grid. Whether having this function is based on user’s wishes. Choose “Enable” in “Enable/Disable” means user must install a meter to monitor energy exported to the grid. There are user value and factory value. The factory value is default which can not be charged by user. The user value setting by installer must be less than the factory value and within the range of 0KW to 20KW. Choose “Disable” means the function will be shut off. Press up and down button to select and press “OK” to confirm. 34

f ) RF Control RF Control is an optional function which can control designated load intelligently by consuming the surplus energy when feed in power reaches certain value. For specific operation, please refer to ” Load remote control installation guide”.

g) DRM Function User can choose whether using the DRM function or not.

h) Line Impedance If able is chosen, the inverter will identify actively the impedance between the inverter and grid, and reduce the effect on input port of the inverter. This function is disable by default.

i) Grid Services
Usually end user do not need to set the grid parameters. All default value have been set before leaving factory according to safety rules. If need to reset, any changes should according to the requirement of local grid.

WARNING ! Please enter setting and enable “natural line” if there is no natural cable in the wiring.

o) Start guide This interface makes user set initial setting of the inverter again possible.

• History The history function contains four aspects of the information: Inverter yield, load consume, Meter and error logs. Press up and down to select ,and press “OK” to confirm the selection, press “ESC” to return to Menu.

d) Error logs The Error log contains error information happened, It can record for six items. Press up and down button to review parameter, Press “ESC” to return to History.

• About This interface shows information of the inverter, include serial number, product SN, machine type, master, slave and manager.

7. Troubleshooting

7.1 Trouble shooting

This section contains information and procedures for solving possible problems with X3 series inverters, and provides you with troubleshooting tips to identify and solve most problems that could occur with the X3 series inverters. This section will help you narrow down the source of any problems you may encounter. Please read the following troubleshooting steps. Check warnings or fault messages on System Control Panel or Fault codes on the inverter information panel. If a message is displayed, record it before doing anything further. Attempt the solution indicated in below table.

• If your inverter’s information panel is not displaying a Fault light, check the following list to make sure that the present state of the installation allows proper operation of the unit.
  — Is the inverter located in a clean, dry, adequately ventilated place?
  — Have the DC input breakers been opened?
  — Are the cables adequately sized and short enough?
  — Are the input and output connections and wiring in good condition?
  — Are the configurations settings correct for your particular installation?
  — Are the display panel and the communications cable properly connected and undamaged?

Contact SolaX Customer Service for further assistance. Please be prepared to describe details of your system installation and provide model and serial number of the unit.

7.2 Routine maintenance

Inverters do not need any maintenance or correction in most condition, but if the inverter often loses power due to overheating, this can be the following reason:

• The cooling fins on the rear of house are covered by dirt’s. Clean the cooling fins with a soft dry cloth or brush if necessary. Only trained and authorized professional personnel who are familiar with the requirements of safety was allowed to perform servicing and maintenance work.

► Safety checks
Safety checks should be performed at least every 12 months by manufacturer’s qualified person who has adequate training, knowledge, and practical experience to perform these tests. The data should be recorded in an equipment log. If the device is not functioning properly or fails any of test, the device has to be repaired. For safety check details, refer to this manual, section 2 Safety instruction and EC Directives.

► Maintain periodically Only qualified person may perform the following works. During the process of using the inverter, the manage person shall examine and maintain the machine regularly. The concrete operations are follow.

1. Check that if the cooling fins on the rear of house are covered by dirt’s, and the machine should be cleaned and absorbed dust when necessary. This work shall be check time to time.
2. Check that if the indicators of the inverter are in normal state, check if the keys of the inverter are in normal state, check if the display of the inverter is normal. This check should be performed at least every 6 months.
3. Check that if the input and output wires are damaged or aged. This check should be performed at least every 6 months.
4. You should get the inverter panels cleaned and their security checked at least every 6 months.

8. Decommissioning

8.1 Dismantling the Inverter

• Disconnect the inverter from DC Input and AC output.
• Wait for 5 minutes for de-energizing.
• Disconnect communication and optional connection wirings.
• Remove the inverter from the bracket.
• Remove the bracket if necessary.

8.2 Packaging

If possible, please pack the inverter with the original packaging. If it is no longer available, you can also use an equivalent carton that meets the following requirements.

• Suitable for loads more than 30 kg.
• With handle.
• Can be fully closed.

8.3 Storage and Transportation

Store the inverter in dry place where ambient temperatures are always between -25°C – +60°C. Take care of the inverter during the storage and transportation, keep less than 4 cartons in one stack.

When the inverter or other related components need to be disposed. Have it carried out according to local waste handling regulations. Please be sure to deliver wasted inverters and packing materials to certain site, where can assist relevant department to dispose and recycle.

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