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Version: EN-UM-1.4 USER MANUAL Single-phase ESS Inverter...
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HISTORY VERSION ISSUED COMMENTS 17-Mar.-23 First release 26-Jul.-23 Update the DO descriptions in 9-Pin of 4.6 Communication Connection section. 28-Aug.-23 Update the contents of the CT. 13-Mar.-24 Update description of the parallel connection. 10-Apr.-24 Update wire spec. of battery/PE/AC.
(Specific please in kind prevail.) Target Group ESS inverters must be installed by professional electrical engineers who have obtained relevant qualifications. Scope This manual is applicable to the following inverters: 3K6HB-60 4K6AC 3K68HB-60 5KAC 4K6HB-60 6KAC 4K6HB-120...
Safety 1. Safety Before using the inverter, please read all instructions and cautionary markings on the unit and in this manual. Put this manual to a place where you can take it easily. Our ESS inverter strictly conforms to related safety rules in design and test. Please follow the local laws and regulations during installation, operation and maintenance.
Safety 1.2 Safety Precaution Installation, maintenance and connection of inverters must be performed by qualified personnel, in compliance with local electrical standards, wiring rules and requirements of local power authorities and/ or companies. The temperature of some parts of the inverter may exceed 60℃ during operation. Do not touch the inverter during operation to avoid being burnt.
Product Introduction Product Introduction 2.1 Overview Hybrid Inverter The hybrid inverters are high-quality inverter which can convert solar energy to AC energy and store energy into battery. Typically, an ESS inverter system consists of PV array, ESS inverter, battery, loads and electricity sensor.
Product Introduction 2.3 Model Definition The letters in the product model have the specific informations. (Take 5KHB-60/4K6AC as examples.) 5KHB-60 4K6AC Charge/discharge current (60A) AC Couple Hybrid Power(4600W) Power(5000W) AC Couple Inverter Hybrid Inverter ESS Inverter User Manual...
Installation Installation 3.1 Packing List After unpacking, please check the following packing list carefully for any damage or missing parts. If any damage or missing parts occurs, contact the supplier for help. Number Quantity Description Inverter Mounting bracket File package PV connector group (PV+/PV-);...
Installation 3.2 Selecting the Mounting Location 3.2.1 Installation Environment Requirements a. With an IP65 protection rating, the inverter can be mounted indoors or outdoors. b. The mounting location must be inaccessible to unrelated personnel since the enclosure and heat sinks are extremely hot during operation. c.
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Installation 3.2.2 Mounting Requirements Mount the inverter vertically or tilted backward by max 15°. The device can not be installed with a wrong mode and the connection area must point downward. ≤15° Horizontally Upright Lean back ≤15° Upside-down 3.2.3 Installation Space Requirements To ensure the inverter normally and easy to operate, there are requirements on available spaces of the inverter, e.g.
Installation 3.3 Mounting Before mounting the inverter, you have to prepare expansion screws and a security screw. Step 1. Install the mounting bracket 1. Use a level ruler to mark the position of the 3 holes on the wall. Refer to Figure a. And drill 3 holes, 16mm in diameter and 55mm in deep.
Electrical Connection 4. Electrical Connection This chapter shows the detailed electrical connections of ESS inverter. And PV connection is N/A for couple inverters. The following illustration only uses the hybrid inverters as an example. Standard Non-Parallel Connection Wiring Diagram Diagram 01 CT Connection Main Grid...
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Electrical Connection Single Phase Parallel Connection Wiring Diagram Diagram 02 Scheme A: N≤5 Turn DIP switch to “ON”. PARAL RS485 No.N Inverter (N≤5) ① PV Array METER ① No.2 Inverter PV Array ① No.1 Inverter PV Array ① ③ Turn DIP switch to “ON”. Critical Load Lithium battery/ lead-acid battery...
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Electrical Connection Note for Scheme A: 1. PV related contents are N/A for AC Couple inverter. 2. BMS communication connection is only for lithium battery. 3. It is necessary to turn the DIP switch of No. 1 inverter and No. N inverter to “ON” in parallel connection mode.
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Electrical Connection Single Phase Parallel Connection Wiring Diagram Diagram 03 Scheme B: N>5 Turn DIP switch to “ON”. PARAL RS485 No.N Inverter (N>5) ① PV Array METER ① No.2 Inverter PV Array ① No.1 Inverter PV Array ① ③ Critical Load Normal Load Turn DIP switch to “ON”.
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Electrical Connection Note for Scheme B: 1. PV related contents are N/A for AC Couple inverter. 2. BMS communication connection is only for lithium battery. 3. It is necessary to additionally purchase suitable CT and meter according to the specific requirements in parallel connection mode-Scheme B.
Electrical Connection 4.1 Grounding A protective earth (PE) terminal is equipped at the side of the inverter. Please be sure to connect this PE terminal to the PE bar for reliable grounding. Items Remark Screw M4 X 12mm; 1.2 N·m (green-yellow wire) ≥...
Electrical Connection 4.2 GRID/BACKUP Connection Before connecting the GRID/BACKUP terminal, ensure that both the AC terminal and the DC terminal are powered OFF and the PV switch is OFF. Otherwise there is a risk of high voltage shock. GRID/BACKUP connection please refer to below. Step 1: Assemble the AC connector and then insert AC connector into GRID/BACKUP port.
Electrical Connection 4.3 Battery Connection ESS inverter now only supports the lithium/lead-acid battery. The recommended lithium battery brands are as follows: PYLON LPF, Aoboet LPF, Dyness LPF, UZENERGY L051100-A. This part only describes the battery connection on inverter side. If you need more detailed connection information about the battery side, please refer to the manual of the battery you used.
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Electrical Connection NTC connection for lead-acid battery Function Pin8 GND S Pin9 NTC BAT+ Temperature sensor ESS Inverter User Manual...
Electrical Connection PV Connection (N/A for AC Couple Inverter) PV connection please refer to below. Click 4~6mm² 4~6mm² Use crimping tool to stitch. Limit buckle can’t be crimped. DC cable should be dedicated PV cable (suggest using 4~6mm² PV1-F cable) Before connection the PV panels, make sure the plug connector have the correct polarity.
Electrical Connection Meter/CT Connection You can monitor usage with a meter or a CT. 4.5.1 Meter Connection This section is applicable to non-parallel connection mode only. ESS inverter supports the meter CHINT-DDSU666 meter by default. The meter is optional. Grid Inverter Side Side...
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Electrical Connection 4.5.2 CT Connection Before connecting to Grid, please install a separate AC breaker (not equipped) between CT and Grid. This will ensure the inverter can be safely disconnected during maintenance. The connection diagram of power cable of CT is as shown in the figure below: Load Flow from grid to inverter...
Electrical Connection Communication Connection There are communication interfaces in the communication port on the bottom of the inverter as show below: PARAL RS485 METER Descriptions Interface For fast firmware upgrade. 4-Pin interface for parallel communication PARAL A matched resistance switch for parallel communication 4-Pin interface for RS485 communication RS485 Demand response mode for Australia application...
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Electrical Connection 4.6.1 BMS Connection (Only for Lithium Battery) This manual ONLY illustrates the pinout sequence of BMS at INVERTER SIDE. For details about the pinout sequence at battery side, see the user NOTE manual of the battery you use, and the following pinout diagram of battery side is only for illustration.
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Electrical Connection BMS communication cable prepare. Prepare RJ45 terminals and strip appropriate length of COM cables. According to pin definitions and cable order, assemble the RJ45 terminals and crimp communication wires. There are two methods to assemble the RJ45 terminals. Then label the RJ45 terminals (BAT or INV) to avoid confusion.
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Electrical Connection Threaded Waterproof cable sleeve cover RJ45 RJ45 terminal terminal Inverter side Seal Lithium Battery cable Press the cable in Seal the seal via the side incisions. Don’t cut off any cables. Lead the BMS cable through the rubber nut, seal and waterproof cover in turn. LITHIUM INVERTER BATTERY...
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Electrical Connection 4.6.2 DRMs Connection DRMs is a shortened form for “inverter demand response modes”. It is a compulsory requirements for inverters in Australia. Note: With DRMs connection, it is necessary to connect APP to inverter and then go to Console >...
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Electrical Connection 4.6.3 Meter/CT Connection RJ45 Terminal Configuration of Meter/CT Communication Pin 12345678 Function RS485_A RS485_B RS485_A/ RS485_B Test- Description Test + 4.6.3.1 Meter Connection Meter cable connection overview Meter RJ45 Pin1 or Pin3(RS485_A ) Pin24 Pin2 or Pin4(RS485_B ) Pin25 DDSU666 ESS Inverter User Manual...
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Electrical Connection Connect meter. Refer to the following steps: Insert RJ45 terminal into corresponding port. Unscrew the waterproof cover Screw the waterproof cover back to inverter firmly and loosen the rubber nut on with 4 x M4 screws(1.2N·m). waterproof cover. Install the seal into the threaded sleeve, fasten the rubber nut.
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Electrical Connection 4.6.3.2 CT Connection This section is applicable to non-parallel connection mode and parallel connection-scheme A only. CT cable connection overview Pin 3, 5,6,7 RJ45 Pin3 (Test+) Green-white Pin5 (CT-) Blue-white Pin6 (CT+) Green Brown-white Pin7 (Test-) Note: Pin3 and Pin7 in the CT are short-circuit connected. Connect CT.
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Electrical Connection 4.6.4 RS485 Connection 4-Pin Terminal Configuration of RS485 Communication Function RS485_A RS485_B Description Connect RS485. Refer to the following steps: Insert 4-Pin terminal into corresponding port. Screw the waterproof cover back to inverter firmly Unscrew the waterproof cover with 4 x M4 screws(1.2N·m).
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Electrical Connection 4.6.5 Parallel Communication Connection 4-Pin Terminal Configuration of parallel Communication Function GND_S PARA_SYNC CAN_L CAN_H Description Parallel communication cable connection overview DIP Switch: ‘ON’ DIP Switch: ‘ON’ No. 2 Inverter No. N Inverter No. 1 Inverter PARAL RS485 PARAL RS485 PARAL RS485 METER...
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Electrical Connection Refer to the following steps: Insert 4-Pin terminal into corresponding port. Screw the waterproof cover back to inverter firmly Unscrew the waterproof cover with 4 x M4 screws(1.2N·m). and loosen the rubber nut on Install the seal into the threaded sleeve, fasten the waterproof cover.
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Electrical Connection Function Temp./Ext. Signal GND-S Insert its 9-Pin terminal into the corresponding Temp. sensor/RMO/DO Control port on the ESS inverter. Install the seal into the threaded sleeve, fasten the rubber nut and screw the waterproof cover back to inverter firmly with 4 x M4 screws; 1.2N · m. 4.6.7 GPRS/WIFI/LAN Module Connection (Optional) For details, please refer to the corresponding Module Installation Guide in the packing.
System Operation System Operation 5.1 Inverter Working Mode The inverter supports several different working modes. 5.1.1 Self Used Mode Go to the "Hybrid work mode" menu, and select the "Self used mode". Under Self Used mode, the priority of PV energy consumption will be Load > Battery > Grid, that means the energy produced by PV gives priority to powering local loads, the excess energy is used to charge the battery and the remaining energy is fed into the grid.
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System Operation BACKUP is the sequence of load consumption. 1 2 3 c) No PV Input The inverter will first discharge the battery energy for home load consuming when no PV input( such as in the evening or some cloudy or rainy days). If the demand is not met, the loads will consume grid energy.
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System Operation a) Wealthy PV Energy When PV energy is wealthy, the PV energy will be first consumed by loads. If there is excess PV power, the power will be fed into grid. If there is still PV energy left after load consuming and grid feeding, then the remaining PV power will be used to charge the battery.
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System Operation c) No PV Input The inverter will first discharge the battery energy for home load consuming when no PV input (such as in the evening or some cloudy or rainy days). If the demand is not met, the loads will consume the grid energy.
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System Operation 5.1.3 Back-up Mode Go to the "Hybrid work mode" menu, and select the "Back-up Mode". Under this mode, the priority of PV energy consumption will be Battery > Load > Grid. This mode aims at charging the battery quickly, and at the same time, you can choose whether to allow AC to charge the battery.
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System Operation Allow AC charging In this situation, the battery can be charged both with PV and AC. a) Wealthy PV power When PV energy is wealthy, PV charges the battery first, then meets the loads, and the rest is fed into the grid.
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System Operation 5.1.4 Forced Charge/Discharge Function According to the demands of application, the user can set the inverter to work on forced charge/discharge the battery in any working mode. Please Console > Hybrid Setting > Work mode Time-based Control go to to enable There are three time periods in which you can set this function.
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System Operation b) Limited PV power When PV energy is limited, BACKUP loads are first powered by PV and then supplemented by battery. BACKUP is the sequence of BACKUP load consumption. Under this mode, please complete the output voltage and frequency settings.
Commissioning Startup/Shutdown Procedure 5.2.1 Startup Procedure Check that the installation is secure and strong enough, and that the system is well grounded. Then confirm the connections of AC, battery, PV etc. are correct. Confirm the parameters and configurations conform to relevant requirements. AC Frequency 50/60Hz PV Voltage...
System Operation 6. Commissioning It is necessary to make a complete commissioning of the inverter system. This will essentially protect the system from fire, electric shock or other damages or injuries. 6.1 Inspection Before commissioning, the operator or installer (qualified personnel) must inspect the system carefully and make sure: 1) The system is firmly and correctly installed by following the contents and notifications of this manual, and there are enough spaces for operation, maintenance and ventilation.
User Interface 7 User Interface 7.1 LED/LCD 7.1.1 LED Introduction This section describes the LED panel. LED indicator includes PV, BAT, GRID, BACKUP, COM, ALARM indicators. PV is N/A for AC couple. It includes the explanation of indicator states and summary of indicator states under the running state of the machine.
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User Interface Grid BACKUP ALARM Details Code PV normal ● ◎ ◎ ◎ ◎ ○ No PV ○ ◎ ◎ ◎ ◎ ○ PV over voltage PV under voltage PV irradiation weak ★ ◎ ◎ ◎ ◎ ○ PV string reverse PV string abnormal On grid ◎...
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User Interface Grid BACKUP ALARM Details Code ◎ ◎ ◎ ◎ ★ ◎ RS485/DB9/BLE/USB Inverter over temperature Fan abnormal Inverter in power limit state ◎ ◎ ◎ ◎ ◎ ★ Data logger lost Meter lost Remote off PV insulation abnorma Leakage current abnormal Internal power supply abnormal Inverter over dc-bias current...
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User Interface 7.1.2 LCD Introduction An LCD screen is optional for this series of inverters. If you choose the LCD screen, the following introduction will help you understand the function of each icon displayed. Note: The LCD screen will be automatically turned off if there is no operation within 10 mins (which cannot be changed by default).
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User Interface Example: Icon Display Area E-Day E-Tot al E-Day E-Tot al Data Unit K kWh Data Display Area Display Area Example: Icon Display Area Phase Data Unit Data Display Display Display Area Area Area Icon Introduction-2 The PV icon represents the power of PV. The Battery icon represents the current battery charge percentage or the voltage of battery..
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User Interface Table: Icon Status Description Icon Status Description Icon Name Light Description Any PV voltage exists ( it should be higer than the Min. PV Startup Voltage) . PV Voltage is lower than the Min. PV Startup Voltage. Grid Voltage and frequency are normal. Grid Grid overvoltage / undervoltage / overfrequency / underfrequency occurs.
User Interface 7.2 App Setting Guide 7.2.1 App Architecture It contains “Cloud Login” and “Local Login”. Cloud login: APP read data from cloud server through API and display inverter parameters. Local login: APP read data from inverter through Bluetooth connection with Modbus protocol to display and configure inverter parameters.
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User Interface 7.2.3 Local Login Step 1. Open the Bluetooth on your own phone and the APP, then click the Bluetooth Connection. Step 2. To connect the inverter, please choose one of the following three ways: Scan machine SN barcode Enter SN Manual connection Step 3.
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User Interface Step 2. Firstly please read tips on the screen carefully. Secondly choose the WiFi SSID and enter the WiFi password. Then click the START THE CONFIGURATION button and wait for WiFi router loading successfully. Finally click the Next. Note: Please use the 2.4G network frequency band for configuration.
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User Interface Step 4. Set parameters for the inverter to connect to the power limit. Then click the Next. XXXXXXXX Step3 Set parameters for the inverter to connect to the power limit. Power control Meter location Meter Type Power flow direction Digital meter modbus address Maximum feed in grid power (W) Previous...
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User Interface Step 6. Please click the button to turn on the inverter. XXXXXXXX Step5 Please click the button below to turn on the inverter. Previous Quick Setup Chart Home Console ESS Inverter User Manual...
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User Interface 7.2.3.2 Chart The power chart is showed by Day, Month and Year in our APP. Data curves in the following figures are only for illustration. Query Daily Data Go to Chart > page. It will show the Daily Production or Consumption Curve in this page. You can click anywhere on the graph to see the energy value of any time.
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User Interface Query Monthly Data Go to Chart > Month page. It will show the Monthly Production or Consumption Curve in this page. You can click anywhere on the graph to see the energy value of any month. XXXXXXXX PV generation capacity Load consumption capacity Feed-in grid capacity Grid capacity...
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User Interface Query Yearly Data Go to Chart > Year page. It will show the Annually Production or Consumption Curve in this page. You can click anywhere on the graph to see the energy value of any year. XXXXXXXX PV generation capacity Load consumption capacity Feed-in grid capacity Grid capacity...
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User Interface 7.2.3.3 Home In this page, you can view the basic information of inverter. Click to display the warning message. XXXXXXXX XXXXXXXX 19.1kWh 494kWh 19.1kWh 494kWh E-Today E-Total E-Today E-Total Self-consumption mode Self-consumption mode 2.71kW 2.71kW 405W 405W 2.21kW 2.21kW 0.00W 60.0W...
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User Interface 7.2.3.5 Console In this page, you can view the basic information like some version information, do some maintaining operations like turn off/on the inverter and manage data. XXXXXXXX XXXXXXXX 19.1kWh 494kWh E-Today E-Total Self-consumption mode 2.71kW 405W 2.21kW 0.00W 60.0W SOC: 40%...
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User Interface Maintenance In this page, you can do some maintaining operations like turn off/on the inverter and manage data. Console page, click Maintenance. XXXXXX XXXXXX XXXXXX XXXXXX XXXXXX XXXXXX 6.11.1 ESS Inverter User Manual...
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User Interface Access Management In this page, you can switch the login permission. Console page, click Access Management > Change User page. Communication Setting In this page, you can set or change the parameters of communication settings: WiFi Setting, RS485 Setting and Ethernet Setting.
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User Interface Grid Parameters In this page, you can set or change the parameters of Grid side. Console page, click Grid Parameters. Note: Setting/modifying these parameters requires logging into an administrator account. ESS Inverter User Manual...
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User Interface Feature Parameters In this page, you can set or change the feature parameters, as shown in the figure. Console page, click Feature Parameters. Note: Setting/modifying these parameters requires logging into an administrator account. Power Limit In this page, you can set or change the parameters of power limit. Console page, click Power Limit...
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User Interface Reactive Power Control In this page, you can set or change the Reactive Power Control parameters. Console page, click Reactive Power Control. Note: Setting/modifying these parameters requires logging into an administrator account. ESS Inverter User Manual...
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User Interface How to Autotest? Step 1. In Console page, click Grid Parameters > Standard Code,then select the IT (CEI 0-21) or IT (CEI O-21 ACEA). Step 2. Back to Console page. Refresh the page and enter the Autotest page to click START. Step 3.
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User Interface Other Setting In this page, you can set other setting parameters. Console page, click Other Setting. Enable DRM Function when connecting to DRM. ESS Inverter User Manual...
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User Interface Hybrid Setting In this page, you can set Hybrid Setting parameters. Console page, click Hybrid Setting. Note: Setting/modifying these parameters requires logging into an administrator account. Work mode Work mode: In Work mode page, there are several work modes are available. ESS Inverter User Manual...
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User Interface Time-based Control setting: In Work mode page, you can also find time-based control function. This function is designed to control the time setting of charging and discharging the inverter. You can set the following parameters based on your requirements: - Charge and discharge frequency: one time or daily - Charging start time: 0 to 24 hours - Charging end time: 0 to 24 hours...
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User Interface Battery Battery page, information including battery parameters, charging and discharging management and grid will be listed. Enter corresponding information if necessary. Choose whether to allow the grid to charge the battery, which is prohibited by default. When the battery capacity or voltage reaches the set value, the grid will stop charging the battery.
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User Interface Backup Load Backup Load page, if enabling Backup Output, you can set parameters including the range of backup output voltage and Min. initiation/startup battery capacity when off-grid. ESS Inverter User Manual...
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User Interface Other Other page, options including Parallel Mode, Buzzer ON, Support Normal Load are listed. Enable them when necessary. Enable Parallel Mode when applying parallel connection mode. Enable Buzzer On to open the Buzzer function. ESS Inverter User Manual...
Maintenance 8. Maintenance Before maintaining and commissioning inverter and its peripheral distribution CAUTION unit, switch off all the charged terminals of the inverter and wait at least 10 minutes after the inverter is powered off. 8.1 Routine Maintenance Maintenance Items Check Content Maintain Content Interval...
Maintenance 8.2 Inverter Troubleshooting When the inverter has an exception, its basic common warning and exception handling methods are shown below. Code Alarm Information Suggestions Grid over voltage 1. If the alarm occurs occasionally, possibly the power grid voltage is abnormal for a short time, and no action is required. Grid under voltage 2.
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Maintenance 1. If the alarm occurs occasionally, possibly the power grid voltage is abnormal for a short time, and no action is required. Inverter over dc-bias 2. If the alarm occurs repeatedly, and the inverter fails to generate power, current contact the customer service center.
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Maintenance 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required. Internal communication 2. If the alarm occurs repeatedly, the inverter cannot work properly. Pls. error contact the customer service center. 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required.
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Maintenance 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required. 2. Check that the battery overvoltage protection value is improperly set. Battery over voltage 3. The battery is abnormal. 4. If exclude the above, the alarm continues to occur, please contact the customer service center.
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Maintenance 1. Check whether the communication cables between BACKUP, electricity Internal communication meter and inverter are well connected and whether the wiring is correct loss(E-M) 2. Check whether the communication distance is within the specification range 3. Disconnect the external communication and restart the electricity Internal communication meter and inverter.
Maintenance 8.3 Removing the Inverter Before removing DC input connector, double check DC input switch is turned WARNING to OFF to avoid inverter damage and personal injury. Perform the following procedures to remove the inverter: Step 1. Disconnect all cables from the inverter, including communications cables, DC input power cables, AC output power cables, and PGND cable, as shown below.
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Technical Specification Model 3K6HB-60 3K68HB-60 4K6HB-60 4K6HB-120 5KHB-60 5KHB-120 6KHB-60 6KHB-120 4K6AC 5KAC 6KAC Protection Protection category Class I Class I AC overcurrent protection Support Support AC short circuit protection Support Support Leakage current protection Support Support AC overvoltage category...
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Technical Specification Model 3K6HB-60 3K68HB-60 4K6HB-60 4K6HB-120 5KHB-60 5KHB-120 6KHB-60 6KHB-120 4K6AC 5KAC 6KAC Relative humidity (%) 0~100 0~100 Cooling concept Natural Natural Mounting Wall bracket Wall bracket Dimensions (W*H*D) (515*487*175)mm (515*487*175)mm PV connection way MC4/H4 Battery connection way Dedicated DC connector Dedicated DC connector AC connection way (Grid &...
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