Epever ELS3K User Manual

Residential hybrid inverter

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USER MANUAL

Residential Hybrid Inverter

ELS3K, ELS3K6,ELS4K, ELS4K6, ELS5K, ELS6K,

ELS3K-A, ELS3K6-A, ELS4K-A, ELS4K6-A, ELS5K-A, ELS6K-A

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Page 1 USER MANUAL Residential Hybrid Inverter ELS3K, ELS3K6,ELS4K, ELS4K6, ELS5K, ELS6K, ELS3K-A, ELS3K6-A, ELS4K-A, ELS4K6-A, ELS5K-A, ELS6K-A...
Page 2: Table Of Contents
Table of Contents Preface ........................................1 Disclaimers ......................................3 Important Safety Instructions ..............................4 1 Product Introduction ................................10 1.1 Overview ..................................10 1.2 Appearance ..................................11 1.3 Dimension ..................................12 1.4 Naming rules ..................................12 1.5 Application scenarios ..............................13 1.6 Electrical schematic ..............................14 1.7 Supported grid types ..............................
Page 3 2.8 Moving the inverter ..............................22 2.9 Installing the inverter ..............................22 3 Electrical Connection ................................24 3.1 Safety precautions ..............................24 3.2 Circuit diagram ................................25 3.3 Port cable description ...............................27 3.4 Connecting the ground cable (PE) ........................28 3.5 Connecting the PV cable ............................29 3.6 Connecting the battery cable ..........................30 3.7 Connecting the Load and Grid cable .........................
Page 4 5.3.7 Data statistics ..............................56 5.3.8 Historical data ..............................57 5.3.9 Device alarm ..............................57 5.3.10 Parameter setting ............................58 5.3.11 Project device and alarm .........................68 6 Troubleshooting and Maintenance ..........................69 6.1 Inverter powering off..............................69 6.2 Inverter dismantling ..............................69 6.3 Troubleshooting ................................69 6.4 Routine maintenance ..............................
Page 5: Preface
(including software, etc.), reproduce or distribute it in any form or by any means. EPEVER reserves the right of final interpretation. This manual may be updated based on user or customer feedback. Please visit our website www.epever.com for the latest version.
Page 6 Indicates a low-level hazard that, if not avoided, could result in minor or moderate injury. NOTICE Indicates an important remainder during the operation which, if ignored, may result in an equipment error alarm. Indicates recommendation for reference. Read through the user manual before any operations. - 2 - Copyright © EPEVER...
Page 7: Disclaimers
Unauthorized disassembly and maintenance of the inverter.  Damage caused by force majeure such as lightning strikes, rainstorms, mountain torrents and  utility failures. Damage occurred during transportation or loading/unloading the inverter.  - 3 - Copyright © EPEVER...
Page 8: Important Safety Instructions
(namely, the PV open circuit voltage after low temperature correction) does not exceed the maximum input voltage of the inverter. Failure to do so may result in inverter damage or other losses, for which EPEVER reserves the right to exclude warranty and shall not bear any joint liability.
Page 9: Transportation Precautions
If any packaging issues are found that may cause damage to the inverter, or if any visible damage is found to the inverter, please immediately notify the responsible shipping company. If necessary, you can seek assistance from your PV system installer or EPEVER. 5. Assembly precautions Assemble the inverter according to the details in the following sections of this manual.
Page 10: Inverter Label
6. Inverter label Labels must not be covered by unrelated objects (such as rags, cardboard boxes, equipment, etc.). Regular wiping is necessary to keep them visible at all times. - 6 - Copyright © EPEVER...
Page 11 Pay attention to the polarity of the electrical connection. Temperature Mark Indicates the operating temperature range. Up Mark The inverter must always be transported, handled, and stored in such a way that the arrows always point upwards. - 7 - Copyright © EPEVER...
Page 12: Operating Precautions
Do not touch terminals or conductors connected to the grid and PV circuit.  WARNING Please wear protective gloves when operating the inverter as some internal components will heat up. NOTICE Pay attention to any instructions or safety documentation related to grid connections. - 8 - Copyright © EPEVER...
Page 13: Maintenance Precautions
Unauthorized disassembly or alteration of components within the inverter is prohibited.  Any losses caused by this will not be covered by the warranty or joint liability of EPEVER. 11. Inverter EMC/noise level Electromagnetic Compatibility (EMC) refers to the ability of an electrical device to function correctly and error-free in a specified electromagnetic environment, without causing unacceptable impact on the environment.
Page 14: Product Introduction
Up to 94.6% of maximum battery charging and discharging efficiency  Multiple AC parallel function for more flexible system solutions  Optional RS485/WiFi/GPRS modules for smart monitoring  RSD rapid shutdown to reduce device damage and prevent personnel injury  - 10 - Copyright © EPEVER...
Page 15: Appearance
OFF to ON or from ON to OFF. (Australia only)  Details for ports 4, 5, 6, 7, 8, 9, 10 refer to Section 4.8.  The grounding position of the inverter heat sink is shown in the figure below: - 11 - Copyright © EPEVER...
Page 17: Application Scenarios
Current sensor Critical load Battery Generator  Schematic diagram of multiple inverters connection WiFi/GPRS RS485 Grid Normal load ELS series inverter 1 Meter Current sensor Critical load Battery Generator WiFi/GPRS ELS series inverter N Battery - 13 - Copyright © EPEVER...
Page 18: Electrical Schematic
The supported grid types for ELS series are TN-S, TN-C, TN-C-S, and TT. For the gird structure with N wire, the effective value of the voltage between the N wire and the PE wire must be less than 10V. - 14 - Copyright © EPEVER...
Page 19: Working Modes
The stages of high and low electricity demand are divided by season, week, and time of day, with summer and winter primarily determining high and low demand, weekdays and weekends primarily determining electricity usage, and day and night - 15 - Copyright © EPEVER...
Page 20: Time-Of-Use Mode
When the electricity price is at its valley, set the time for the grid to charge the battery. When the electricity price is at its peak, the battery will - 16 - Copyright © EPEVER...
Page 21: Peak Shaving Mode
When the battery runs out of energy, the system can switch to a diesel generator mode, and then the generator supplies power to the load. Scenario recommendation: Recommended for use in areas with unstable power grid. - 17 - Copyright © EPEVER...
Page 22: Installation
Please carefully check the product packaging and accessories list before installation. 2.3.1 Check packing Packaging materials and components may be damaged during transportation. Therefore, before installing the inverter, please inspect its packaging materials. Check the packaging for any damage, - 18 - Copyright © EPEVER...
Page 23: Check Accessories List
Do not install the inverter on the support with poor sound insulation to avoid the noise  generated by the working product, which may annoy the residents nearby. The altitude to install the inverter must not exceed 4,000 meters.  - 19 - Copyright © EPEVER...
Page 24: Installation Angle
Install the inverter vertically or at a maximum back tilt of 15 degrees.  Do not install the inverter in a tilted, horizontal, upside down, excessively backward-leaning, or  sideways-tilted position. 15° Max - 20 - Copyright © EPEVER...
Page 25: Installation Space
In scenarios with multiple inverters, a linear installation is recommended when space is sufficient; when space is limited, the following Triangle installation is recommended. It is not recommended to install multiple inverters in a stacked configuration. 300mm 200mm - 21 - Copyright © EPEVER...
Page 26: Moving The Inverter
 do not let the terminal connectors directly touch the ground; place the inverter horizontally. When placing the inverter on the ground, use foam or cardboard underneath to prevent  damage to the casing. - 22 - Copyright © EPEVER...
Page 27: Installing The Inverter
Step 4: Hang the inverter on the mounting plate and lock them with M6 Allen socket screws. Step 5: To deter theft, users can configure an appropriate small lock to secure the inverter to the mounting plate (optional, the anti-theft lock needs to be purchased separately). - 23 - Copyright © EPEVER...
Page 28: Electrical Connection
(including protective glasses and boots) should be worn. The open-circuit voltage of the PV modules connected to the ELS series inverter should not  exceed 580V. The connected PV modules must have an IEC61730 Class A rating. - 24 - Copyright © EPEVER...
Page 29: Circuit Diagram
Refer to the specific requirements of local regulations Scenario 1: N and PE cables are connected together in the distribution cabinet for wiring (applicable to areas in Australia, New Zealand, South Africa, and etc.) - 25 - Copyright © EPEVER...
Page 30 PE and N is disconnected. NOTICE The short-circuiting function of the PE-N relay is disabled by default. To enable this function, please operate on the APP. For details, please refer to Section 6.3 APP settings. - 26 - Copyright © EPEVER...
Page 31: Port Cable Description
Definition Cable type Cable specification BAT + +: Connecting to the positive 25mm to 35mm terminal of the lithium (ELS3K, ELS3.6K) battery. Outdoor multi-core copper cable -: Connecting to the negative 30mm to 35mm terminal of the lithium (ELS4K, ELS4.6K, ELS5K, ELS6K) battery.
Page 32: Connecting The Ground Cable (Pe)
Step 3: Secure the OT terminal with an M6 screw at the position shown in Figure 4. with a recommended tightening torque of 2 N·m. NOTICE The cavity formed by crimping the terminal's conductor crimp sleeve should completely enclose the cable, and the cable should be tightly secured with the terminal. - 28 - Copyright © EPEVER...
Page 33: Connecting The Pv Cable
Step 4: Thread the crimped PV cables through the locking nuts, then insert them into its respective plastic housings until you hear a "click" sound, indicating that the metal cores are securely seated, after which tighten the locking nuts. - 29 - Copyright © EPEVER...
Page 34: Connecting The Battery Cable
If it is necessary to remove the PV connectors from the inverter, you can insert a removal wrench into the fixed latch and press down firmly to carefully remove the PV connectors. 3.6 Connecting the battery cable Ø:10~12.5mm L=L1+2mm L1 Copper, 25mm ≤ S ≤35mm - 30 - Copyright © EPEVER...
Page 35: Connecting The Load And Grid Cable
Step 1: Select the appropriate cable type and specification according to Section 4.3 Port cable description. And use wire strippers to strip the insulation layer of the specified cable to a suitable length (as shown in Figure 1. - 31 - Copyright © EPEVER...
Page 36: Connecting The Com Cable
Lithium battery CAN high-level data BAT-CANL Lithium battery CAN low-level data NTC+ Lead-acid battery temperature sampling BAT-485A Lithium battery RS485 differential signal + BAT-485B Lithium battery RS485 differential signal - Connecting the BMS/NTC port: - 32 - Copyright © EPEVER...
Page 37 Schematic diagram of external NTC connection for lead-acid batteries  Schematic diagram of RS485 and CAN communication connections for lithium batteries  - 33 - Copyright © EPEVER...
Page 38: Meter/Ct
For a single-inverter system without normal load, the following three options are used to  achieve the anti-reverse current function: CT, Meter, or neither CT nor Meter. See schematic diagrams below for details. Meter 24 25 RS485 Meter Without Normal Load–Meter Connection Schematic Diagram - 34 - Copyright © EPEVER...
Page 39 For a single-inverter system with normal load, the following two options are used to achieve the  anti-reverse current function: CT and Meter. See schematic diagrams below for details. LOAD With Normal Load – Anti-reverse Current – CT Connection Schematic Diagram - 35 - Copyright © EPEVER...
Page 40 CT, Meter, or neither CT nor Meter. See schematic diagrams below for details. LOAD With Normal Load – No Anti-reverse Current – CT Connection Schematic Diagram Meter 24 25 LOAD RS485 Meter With Normal Load – No Anti-reverse Current – Meter Connection Schematic Diagram - 36 - Copyright © EPEVER...
Page 41  PIN 5 and PIN 6 of the Meter/CT port correspond to PIN 24 and PIN 25 of the meter module, shown as Figure ③.  Connection of meter module is shown as Figure ②. PIN 1/2 and PIN 3/2 of the meter module are connected to the voltage signal L and N respectively. - 37 - Copyright © EPEVER...
Page 42: Com1/Com2
The pins of the COM2 port (RJ45) are defined as follows: Picture Name Description Gen-START-Rly Generator start relay Gen-START-Rly Gen-ON-Rly Generator back-up relay Gen-ON-Rly RSD-IN RSD switch input RSD-IN RSD-12V+ 12V power output RSD-12V- - 38 - Copyright © EPEVER...
Page 43 As shown in the figure, connect the RS485+ and RS485- of the inverter to the TX+ and TX- of the RS485 to USB adapter, and then connect the adapter's USB port to the computer. - 39 - Copyright © EPEVER...
Page 44 COM2 port.  The RSD transmitter is connected to PIN15 (+) and PIN16 (-) (12Vdc power supply).  Configured the RSD transmitter in the residential hybrid inverter may cause interference in the user area. - 40 - Copyright © EPEVER...
Page 45 Back-up port will be shut down. And then, the RSD transmitter will be immediately turned off. Emergency Stop Buton COM2 To “Bsck-up” Transmiter Power Supply serice panel Receiver 1 Receiver 2 Receiver n Power Line Communicaton (PLC) Transmiter Coil To PV - 41 - Copyright © EPEVER...
Page 46: Wifi/Gprs Com. Port
WiFi/GPRS module for inverter remote monitoring. The pins of the WiFi/GPRS com. port (USB-A 3.0) are defined as follows: Picture USB-A 3.0 Description Data interface Power ground RS485-A RS485 communication RS485-B Idle Idle Idle Connect the WiFi/GPRS com. port - 42 - Copyright © EPEVER...
Page 47 WEB interface or an APP, as needed. An account for the WEB or APP is required, and users need to bind the inverter with the serial number of the WiFi/GPRS communication module. The WiFi/GPRS serial number is sticked on both the packaging box and the module itself. - 43 - Copyright © EPEVER...
Page 48: Parallel Connection Port
AC GRID terminal (not the AC LOAD terminal). For example, the maximum AC LOAD power of one inverter is 6kVA, and the maximum AC LOAD power of six inverters is 36kVA. - 44 - Copyright © EPEVER...
Page 49: Afci Setup
Users can remove the faults through the APP, or restart the system after powering off. After the inverter removes the fault, it will reconnect to the grid and operate. By default, the AFCI function is disabled and can be enabled through the APP. - 45 - Copyright © EPEVER...
Page 50 AFCI operation steps: Step 1: Open the parameter setting of the APP and find the AFCI module setting. Step 2: Read the AFCI parameter values. Step 3: Enable the AFCI module. - 46 - Copyright © EPEVER...
Page 51: Indicator
Data sending in Software/IoT. No data sending in Software/IoT. Solid ON Normal utility. Utility Abnormal utility. Solid ON Normal AC output. Load Abnormal AC output. Pink Upgrade successful. Flashing red/Solid red Upgrade failed. Upgrade Flashing Upgrading. - 47 - Copyright © EPEVER...
Page 52: Commissioning
Step 7: Set inverter parameters via the APP to ensure it is working normally. The following parameters must be set correctly: Select Safety Code. Select PV Input Mode ("Independent" mode by default). Select Operation Mode ("Self Consumption" by default). Select Battery Mode on the Battery Configuration interface. - 48 - Copyright © EPEVER...
Page 53 Select Remote Switching as ON to power on the inverters remotely for grid connecting. - 49 - Copyright © EPEVER...
Page 54: App Settings
"Sign in" button to enter the APP. and then select the user type from the drop- down box. Tick to agree with the privacy agreement and click the "Sign Up." - 50 - Copyright © EPEVER...
Page 55: Add Devices
“Monitor” page. corresponding device. Then Click “Done” to finish click the "+" icon to add it. device addition and enter Otherwise, click "Refresh". the device selection page. - 51 - Copyright © EPEVER...
Page 56 QR code on “Done” to finish device the WiFi stick to add the device. addition and enter the device selection page. You can rename the device and communication address here. - 52 - Copyright © EPEVER...
Page 57: Local Monitoring
“Ble pair” page. search for nearby devices. Select the device you want to connect to and click on it to enter the device detail interface. If the connection is not successful, click "Rescan". EPEVER - 53 - Copyright © EPEVER...
Page 58: Device Situation
The bottom right key is access local monitoring, information, device "Copy". network configuration, and information, energy adding devices by scanning information, PV the QR code. information, battery information, grid information, and load information. 5.3.5 Device situation - 54 - Copyright © EPEVER...
Page 61: Historical Data
5.3.8 Historical data 5.3.9 Device alarm Real-time Alarm Alarm Level Alarm Date - 57 - Copyright © EPEVER...
Page 62: Parameter Setting
Click the setting button to enter the parameter setting interface.  System Parameter  System Time Select the corresponding time based on local time and deliver. It is recommended to calibrate the time on a monthly basis. - 58 - Copyright © EPEVER...
Page 63 Enable this parameter to realize the function of an uninterrupted power supply (UPS). The battery will supply power to the load during the absence of the grid. Set the parameter "EPS" as "Enable" and click "One Click Send". - 59 - Copyright © EPEVER...
Page 64 Operation modes include Time of Use, Economic, Self Consumption, and Peak Shaving; select the operation mode based on user’s actual needs and deliver the new setting.  Safety Code Select the corresponding safety code based on local grid connection requirements, and then, apply the new setting. - 60 - Copyright © EPEVER...
Page 65 Select “Disable” when the CT is installed in the normal direction, and select “Enable” when the CT is installed in the reverse direction.  Remote Switching Users can remotely control the power on/off and select to deliver the new setting according to actual needs. - 61 - Copyright © EPEVER...
Page 66 Set the corresponding parameters and click "One Click Send". It is recommended to calibrate the time on a monthly basis. One Click Send - 62 - Copyright © EPEVER...
Page 67 SOC based on their needs, and the device allows the setting of multiple rules. Set the corresponding parameters and click "One Click Send". It is recommended to calibrate the time on a monthly basis. One Click Send - 63 - Copyright © EPEVER...
Page 68  Anti-Reflux Control Enable the anti-reflux control and set the anti-reflux power before using the anti-reflux function. And then, click "One Click Send". One Click Send  On-grid 1.1 × Enable One Click Send - 64 - Copyright © EPEVER...
Page 69 SOC drops to 20%, and resumes discharging when the battery SOC is charged back up to 40%. Set the corresponding parameters and click "One Click Send". One Click Send - 65 - Copyright © EPEVER...
Page 70 When using a parallel system, it is necessary to enable the parallel control. Select one inverter as the master unit, and the others as slaves, ensuring that each inverter has a unique address. After setting the parameters, click "One Click Send". One Click Send - 66 - Copyright © EPEVER...
Page 71 When users select an electric meter for grid monitoring, select the "PCC Electric Meter" as "Enable". And then, deliver the new setting. One Click Send  Factory Data Reset "Factory Data Reset" includes “clear accumulated energy, return to factory settings, and clear event record.” - 67 - Copyright © EPEVER...
Page 72: Project Device And Alarm
5.3.11 Project device and alarm Project monitoring Project alarm Device Alarm - 68 - Copyright © EPEVER...
Page 73: Troubleshooting And Maintenance
Are the configuration settings correct for users’ specific installation? Are the display panel and communication cables correctly connected and undamaged? On the APP main interface, select "Site > Device List," click on a device to access its relevant  - 69 - Copyright © EPEVER...
Page 74 If the issue remains unresolved, please contact our technical support. IslandFault (Island Fault) GEN_OVP (Generator Over Voltage) GEN_UVP (Generator Under Voltage) Check whether the generator is working GEN_OFP (Generator Over Frequency) normally. GEN_UFP (Generator Under Frequency) GEN_OverLoad (Generator Overload) - 70 - Copyright © EPEVER...
Page 75 HwADFaultDCI (Inverter Current DC If the issue remains unresolved, please Component Reference Error) contact our technical support. HwADFaultVGrid_Slave (Slave Chip Grid Voltage Reference Error) GFCIDeviceFault_Slave (Slave Chip Leakage Current Sampling Error) - 71 - Copyright © EPEVER...
Page 76 LLCBusOVP (LLC Bus Over Voltage) HwLLCBusOVP (LLC Bus Hardware Over Voltage) Check whether the battery voltage is too BatLowVoltageShut (Battery Low Voltage Shutdown) low. Check whether the inverter is working SwBatOCP (Battery Over Current) overload. - 72 - Copyright © EPEVER...
Page 77 5 SpiCommFault (Master-Slave SPI minutes to check if the fault disappears. Communication Error) If the issue remains unresolved, please SChip_Fault (Slave Chip Error) contact our technical support. MChip_Fault (Master Chip Error) - 73 - Copyright © EPEVER...
Page 78 TempFault_Bat (Battery Over Temperature) TempFault_HeatSink1 (Heat Sink 1 Over Temperature) VoltDerating (Voltage Derating) Ensure the grid voltage and frequency VoltLoading (Voltage Loading) are within the specified range of the FreqDerating (Frequency Derating) inverter. FreqLoading (Frequency Loading) - 74 - Copyright © EPEVER...
Page 79 Permanent Fault) unrecoverHwBusOVP (Bus Hardware Over Voltage Permanent Fault) unrecoverIpvUnbalance (PV Current Unbalance Permanent Fault) unrecoverEPSBatOCP (EPS Battery Over Current Permanent Fault) unrecoverAcOCPInstant (Inverter Peak Over Current Permanent Fault) unrecoverIacUnbalance (AC Current Unbalance Permanent Fault) - 75 - Copyright © EPEVER...
Page 80 5 SafetyVerFault (Safety Version Error) minutes to check if the fault disappears. SCILose(DC) (SCI Communication Error If the issue remains unresolved, please (DC)) contact our technical support. SCILose(AC) (SCI Communication Error (AC)) - 76 - Copyright © EPEVER...
Page 81: Routine Maintenance
When the inverter can no longer be used and needs to be discarded, please dispose of the inverter in accordance with the electrical waste disposal requirements specified by the current country/region. The inverter should not be treated as household waste. - 77 - Copyright © EPEVER...
Page 82: Technical Specifications
Maximum Output Power (VA) 3,300 4,050 4,400 5,060 5,500 6,600 Rated Output Voltage (V) Rated Output Frequency (Hz) Maximum Output Current (A) 14.3 17.6 19.1 23.9 28.6 Maximum Input Current (A) 28.6 35.2 38.2 47.8 - 78 - Copyright © EPEVER...
Page 83 Maximum Efficiency 0.976 0.978 0.98 European Efficiency 0.972 0.973 0.975 Maximum Discharge 0.946 Efficiency MPPT Efficiency 0.999 General Parameters PV reverse polarity/insulation resistance/over Protections current/over voltage/over temperature/anti- islanding/leakage current protection DC Switch Included AFCI Optional - 79 - Copyright © EPEVER...
Page 84 Standby Losses (W) < 10 Ingress Protection Rating IP65 Mounting Method Wall Mounted (1) The maximum input voltage refers to the voltage at an ambient temperature of -30℃. Any changes without prior notice! Version number: V1.0 - 80 - Copyright © EPEVER...
Page 88 HUIZHOU EPEVER TECHNOLOGY CO., LTD. +86 - 752-3889706 info@epever.com www.epever.com...

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