Epever UC3522-1250P20 User Manual
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Epever UC3522-1250P20 User Manual

Inverter/charger
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UC3522-1250P20, UCP3522-1250P20
UC3542-0650P20, UCP3542-0650P20
UC5542-1050P20, UCP5542-1050P20
Inverter/charger
User Manual

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Summary of Contents for Epever UC3522-1250P20

  • Page 1 Inverter/charger User Manual UC3522-1250P20, UCP3522-1250P20 UC3542-0650P20, UCP3542-0650P20 UC5542-1050P20, UCP5542-1050P20...

  • Page 2: Table Of Contents

    Contents Important Safety Instructions..............1 Disclaimers....................5 1 General Information.................6 1.1 Overview............................6 1.2 Appearance...........................9 1.3 Naming rules..........................12 1.4 Connection diagram......................... 13 2 Interface....................15 2.1 Indicator............................15 2.2 Buttons............................16 2.3 Home screen..........................17 2.4 Interface............................18 2.4.1 Real-time data interface....................18 2.4.2 User interface........................
  • Page 3 3.3 Mounting the inverter/charger....................53 3.4 Wiring the inverter/charger.....................54 3.5 Operate the inverter/charger....................64 4 Working modes..................65 4.1 Abbreviation..........................65 4.2 Off-Grid working modes......................66 4.2.1 Battery mode........................66 4.2.2 No battery mode.......................72 4.3 On-Grid working modes......................73 4.3.1 On-Grid operation procedure..................73 4.3.2 Battery mode........................

  • Page 4: Important Safety Instructions

    Important Safety Instructions Please reserve this manual for future review. This manual contains all the safety, installation, and operation instructions for the UC/UCP series inverter/charger ("inverter/charger" referred to as this manual). 1. Explanation of symbols To enable users to use the product efficiently and ensure personal and property safety, please read the related words carefully when you encounter the following symbols in the manual.
  • Page 5 4. Safety cautions before installation When receiving the inverter/charger, please check if there is any damage in transportation. If you find any problem, please contact the transportation company or CAUTION our company in time.  When installing or moving the inverter/charger, follow the instructions in the manual.
  • Page 6 7. Safety cautions for inverter/charger operation When the inverter/charger works, the shell will generate much heat, and the WARNING temperature is very high. Please do not touch it, and keep it far from the equipment susceptible to high temperature. SURFACE ...
  • Page 7 Improper maintenance of the inverter/charger may cause personal injury or equipment damage;  It is recommended to wear an antistatic wrist strap or avoid unnecessary contact with the circuit  board. The safety mark, warning label, and nameplate on the inverter/charger should be visible, not removed or covered.

  • Page 8: Disclaimers

    Disclaimers The warranty does not apply to the following conditions: Damage caused by improper use or inappropriate environment (it is forbidden to install the  inverter/charger in humid, salt spray, corrosion, greasy, flammable, explosive, dust accumulative, or other severe environments). The actual current/voltage/power exceeds the limit value of the inverter/charger.

  • Page 9: General Information

    1 General Information 1.1 Overview UC/UCP series, upgraded hybrid inverter/chargers that support utility charging, oil generator charging, solar charging, utility output, inverter output, and energy management. Equipped with main AC output and second AC output. After enabling the low-power mode on the LCD, the inverter/charger can enter the low-power mode according to the battery voltage and output power.
  • Page 10 where the electricity is unstable. Features  Full intelligent digital energy storage equipment.  Applicable for pure off grid/ backup power/ self-generation and self-consumption/ on grid situation.  Support battery mode or non-battery mode.  Non-battery mode: simultaneously charging with solar (Main) and Utility (Assist). ...
  • Page 11  IP20 enclosure design with Anti-Dust Kit (Dust removal is required regularly, and the specific requirements are detailed in chapter 7 Maintenance). ①More than 12 units need to be customized. ②Only the UC5542-1050P20 and UCP5542-1050P20 support two PV input function, which realizes single MPPT tracking or two parallel MPPTs tracking, and increase the PV maximum input current.

  • Page 12: Appearance

    1.2 Appearance UC3522-1250P20/UCP3522-1250P20/UC3542-0650P20/UCP3542-0650P20 ...
  • Page 13 UC5542-1050P20/UCP5542-1050P20 ...
  • Page 14 RS485-A RS485-B RS485-B Please go to EPEVER official website to check or download the currently supported BMS manufacturers and the BMS parameters. (2) Dry contact specification: 1A@125VAC. Function: The dry contact interface is connected with the generator switch to turn on/off the generator.

  • Page 15: Naming Rules

    Definition Definition HFS-BUS CAN-L PFS-BUS CAN-H PS-GND 6/7/8/9 Reserved 1.3 Naming rules Naming rules for UC series  Naming rules for UCP series ...

  • Page 16: Connection Diagram

    1.4 Connection diagram No battery mode ...
  • Page 17 Battery mode  AC loads shall be determined according to the output power of the inverter/charger. WARNING The load exceeding the maximum output power may damage the inverter/charger.  For different battery types, confirm the relevant parameters before power on. ...

  • Page 18: Interface

    2 Interface Note: The display screen can be viewed clearly when the angle between the end-user's horizontal sight and the display screen is within 90°. If the angle exceeds 90°, the information on the display screen cannot be viewed clearly. 2.1 Indicator Indicator Status...

  • Page 19: Buttons

    2.2 Buttons Buttons Operation Instruction  Exit the current interface. Click  Switch from the "home screen" to the "Main Table Data Information" screen.  Browse interface: Up/Down. Click  Parameters setting interface: Increase or decrease the parameter value per step size. Parameters setting interface: Increase or decrease Press and hold the parameter value per 10 times the step size.

  • Page 20: Home Screen

    2.3 Home screen Instruction ❶ Display the system time, current battery type, and charging stage. When the BMS communication is normal, the icon will be shown on the far right, while when it is abnormal, the icon will be shown on the same position. ❷...

  • Page 21: Interface

    Battery voltage / battery current / lithium battery real-time SOC (display "--" without lithium battery) ❼ Parallel status icon. It shows when there is two or more inverter/chargers connect in parallel successfully, and it will not display on the single inverter/charger. ★...

  • Page 23: User Interface

    2.4.2 User interface After powering on the inverter/charger, the home screen shows up. Click the "ESC" button to enter the "Main Table Data Information" screen. Click the "ENTER" button to enter the next interface, or click the "UP/DOWN" button to browse the current screen display. "User Data Setup"...

  • Page 24: Administrator Interface

    password. The default parameters and setting range refer to chapter 2.5.1 Parameters list. 2.4.3 Administrator interface After powering on the inverter/charger, the home screen shows up. Press and hold the "ENTER" button to enter the password interface. Input the password correctly (0000 by default) to check all parameters or modify them.

  • Page 25: Parameters Setting

    2.5 Parameters setting 2.5.1 Parameters list Enter the "Set Data Navigation" interface according to chapter 2.4.3 Administrator interface. Then click the "UP/DOWN" button to select navigation 1－9 for detail settings. Default parameters and setting ranges are shown in the following table. Note: On the parameter setting interface, click the "UP/DOWN"...
  • Page 26 Parameters Default User define User define: DISABLE, ENABLE Note: The parameter will only take effect when UnbalanceSet (Current DISABLE used in three phase. After restoring to factory unbalance set) settings, the default value is the last modified value. User define：Single, Phase A, Phase B, Phase C Note: After phase set is changed, must turn off the inverter charger for 10 seconds before Phase Set...
  • Page 27 100.0A charging current) Namely, the maximum current at the battery end when the utility charges the battery. User define: 5.0A to 110.0A for UC3522-1250P20/ UCP3522-1250P20, step size: 0.1A 110.0A Namely, the maximum current at the battery end when the utility charges the battery.
  • Page 28 MaxCharginCurrent (Battery 100.0A UCP5542-1050P20, step size: 0.1A. Namely, the Max. charging current) maximum allowable charge current on battery side. User define: 5.0A to 120.0A for UC3522-1250P20/ 120.0A UCP3522-1250P20, step size: 0.1A. Namely, the maximum allowable charge current on battery side.
  • Page 29 LimitDisChgCurrt (Battery limit UCP5542-1050P20, step size: 0.1A. Namely, the 250.0A discharging current) maximum allowable discharge current on battery side. User define: 10.0A to 380.0A for UC3522-1250P20/ UCP3522-1250P20, step size: 0.1A. Namely, the 380.0A maximum allowable discharge current on battery side. Read-only, "164...
  • Page 30 Parameters Default User define It takes effect after the “ChargeControlMode” is set as “SOC.” When the battery SOC is lower than this FulDiscnctRecvSoc (Full value, the inverter/charger will charge the battery. energy disconnect recover Soc) User define: 60% to (Full energy disconnect Soc minus 5%), step size: 1% cannot separately...
  • Page 31 Parameters Default User define Not fixed, Capacity (SOC Read-only (After the BMS is connected, this value updated in battery capacity) will read from the BMS) real time User define: -20℃ to 0℃, step size: 0.1℃ LimitChgTemp (Limit charge When the environment or the battery temperature is 0.0℃...
  • Page 32 Parameters Default User define User define: Solar, SolarPrior (Solar priority), Utlty&solr (Utility & solar), UtltyPrior (Utility priority). Charging Mode Utlty&solr Note: For detailed working modes, refer to chapter 4. User define: PV>BP>BT (namely, PV>Bypass> Battery), PV>BT>BP (namely, PV>Battery> Bypass), Discharging Mode PV>BT>BP BP>PV>BT (namely, Bypass>PV>...
  • Page 33 Parameters Default User define User define: DISABLE, ENABLE When set as "ENABLE," the inverter/charger will enter the low power consumption mode when certain conditions are met, such as no PV and utility, and the ECO Mode ENABLE battery voltage drops to the “Low voltage disconnect voltage.”...
  • Page 34 Parameters Default User define User define: DISABLE, ENABLE When using a DC power to replace the PV array for power supply testing, it is necessary to set the "PV DC Input Source" as "ENABLE." Otherwise, the PVDCInputSource DISABLE inverter/charger cannot work properly.
  • Page 35 Parameters Default User define User define: Shared, Independent This parameter takes effect when inverter/chargers are connected in parallel. If each inverter/charger is connected to the same battery BATT Input Mode Shared pack, this value needs to be set to "Shared" mode. If each inverter/charger is connected to a separate battery pack, this value needs to be set to "Independent"...
  • Page 36 Parameters Default User define User define: 1 second to 3600 seconds, step size: 1 second (Note: When setting this value, press and hold the "UP/DOWN" button to increase/decrease the value by 100*step size, namely, 100 seconds.) Log Data Interval 60 Sec Set the time interval of the historical data (only refers to the voltage, current and other data stored regularly, excluding the historical faults.
  • Page 37 Parameters Default User define Press the ENTER button to clear the voltage, current and other data stored regularly, excluding the historical faults. Log Data Reset Note: After pressing the ENTER button, the flashing LED light will become steady or turn off, then inverter/charger will...
  • Page 38 Parameters Default User define User define: ENABLE, DISABLE Under the normal BMS communication, if the ManualChageEnable (Manual "ManualChageEnable" is set to "ENABLE," the ENABLE charge enable) lithium battery charging allowed. "ManualChageEnable" is set to "DISABLE," the lithium battery charging is not allowed. 7.
  • Page 39 Parameters Default User define 48V battery type: AGM, OPZS, GEL, FLD, LFP15S, LFP16S, LNCM13S, LNCM14S Battery Type 24V battery type: AGM, OPZS, GEL, FLD, LFP8S, LNCM6S, LNCM7S 64.0V User define: Charging limit voltage< Over voltage (48V system) OverVoltDiscnect (Over voltage disconnect voltage≤...

  • Page 40: Battery Work Modes

    Parameters Default User define User define: Discharging limit voltage≤ Under voltage warning voltage< (Under voltage warning recover 48.0V (48V system) voltage minus 0.1*N), step size: 0.1V Note: N=Rated UnderVolt Warn (Under voltage battery voltage/12. Note: This voltage is also the disconnect voltage warning voltage) for the AC output main power-off.
  • Page 41 1. Lithium battery pack with The inverter/charger controls Figure “Setting BMS, without current charging and discharging process for lithium battery control function at the end based on the pre-set MAP pack with BMS, without of charge and discharge table. current control function” 2.
  • Page 42 Figure 2 “Setting process for lithium battery pack with BMS and current control function”  When the system adopts a lithium battery pack with BMS and current control function at the end of charge and discharge, and the lithium battery pack can communicate with the inverter/charger normally, follow the flowchart below to set parameters correctly.
  • Page 43 The inverter/charger controls charging and discharging based on the read BMS values. Please go to EPEVER official website to download the currently supported BMS manufacturers and the BMS parameters. The inverter/charger will control charging and discharging based on the LCD ...
  • Page 44 Due to the different charging and discharging characteristics and voltage  consistency of lithium batteries from different manufacturers, it is necessary for professionals to guide the use of VIRTUAL_BMS for charging and discharging. Figure 3 “Setting process for lithium battery pack with BMS, without current control ...
  • Page 46 The inverter/charger will control charging and discharging based on the LCD  settings after setting the “BMSCurent Select” as “INVALID.” Due to the different charging and discharging characteristics and voltage  consistency of lithium batteries from different manufacturers, it is necessary for professionals to guide the use of VIRTUAL_BMS for charging and discharging.
  • Page 47 The inverter/charger will control charging and discharging based on the LCD  settings after setting the “BMSCurent Select” as “INVALID.” Due to the different charging and discharging characteristics and voltage  consistency of lithium batteries from different manufacturers, it is necessary for professionals to guide the use of VIRTUAL_BMS for charging and discharging.

  • Page 48: Battery Voltage Control Parameters (Smart)

    20.4－32V Low Voltage Disconnect Voltage 20.3V 20.3V 20.3V 20.3V Read-only Discharging Limit Voltage When the battery voltage is lower than 21.6V, the battery inverter output must be derated. Curve of Continuous output power Vs battery voltage for UC3522-1250P20/UCP3522-1250P20 as below:...
  • Page 49 The parameters are measured in the condition of 48V/25 ºC. Battery Type OPZS User define Voltage control parameters 64.0V 64.0V 64.0V 64.0V 42.8－64V Over Voltage Disconnect Voltage 60.0V 60.0V 60.0V 60.0V 42.8－64V Charging limit voltage 60.0V 60.0V 60.0V 60.0V 42.8－64V Over Voltage Reconnect Voltage 58.4V 58.4V...
  • Page 50 Charging Voltage ≥ Float Charging Voltage > Boost Voltage Reconnect Voltage B． Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage C． Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging Limit Voltage D． Under Voltage Warning Recover Voltage > Under Voltage Warning Voltage ≥ Discharging Limit Voltage E．...
  • Page 51 Low Voltage Disconnect Voltage 21.5V 22.4V 21.5－32V Discharging Limit Voltage 18.6V 21.7V Read-only LNCM Battery Type 48V system Voltage control parameters LNCM13S LNCM14S User Define Over Voltage Disconnect Voltage 55.9V 60.2V 42.8－64V Charging Limit Voltage 55.2V 59.5V 42.8－64V Over Voltage Reconnect Voltage 55.2V 59.5V 42.8－64V...

  • Page 52: Time Setting

    2.5.5 Time setting Enter the "Set Data Navigation" interface according to chapter 2.4.3 Administrator interface. Then click the "UP/DOWN" button to select "7 Sys Data Time Setup", and click the "ENTER" button to enter the system time setting interface. On the system time setting interface, click the "ENTER"...

  • Page 53: Single Installation

    3 Single Installation 3.1 Attention  Please read the manual carefully to familiarize yourself with the installation steps. Be very careful when installing the batteries, especially flooded lead-acid batteries. Please wear eye  protection, and have fresh water available to rinse if contact with battery acid. ...

  • Page 54: Wire And Breaker Size

    PV module's Isc. The PV array's Isc must not exceed the maximum PV input current. For max. PV input current and max. PV wire size, please refer to the table below: Model PV wire size Circuit breaker UC3522-1250P20 /11AWG 2P—20A (with arc extinguishing function) UC3542-0650P20 UCP3522-1250P20 /10AWG 2P—25A (with arc extinguishing function)
  • Page 55 440V (At 25℃). Recommended Utility wire size  Model Utility wire size Circuit breaker UC3522-1250P20 UC3542-0650P20 /10AWG 2P—32A UCP3522-1250P20 UCP3542-0650P20 UC5542-1050P20 10mm /7AWG 2P—50A UCP5542-1050P20 The utility input has the circuit breaker already; no need to add any more.

  • Page 56: Mounting The Inverter/Charger

    3.3 Mounting the inverter/charger Risk of explosion! Never install the inverter/charger in a sealed enclosure with flooded batteries! Do not install the inverter/charger in a confined area where the battery gas WARNING can accumulate. The inverter/charger can be fixed to the concrete and solid brick walls, while it cannot be fixed to the hollow brick wall.

  • Page 57: Wiring The Inverter/Charger

    ❺Utility or Generator > ❻Optional accessories”, and disconnect the inverter/charger in the reverse > order. The following wiring sequence is illustrated in the appearance of "UC3522-1250P20/ UCP3522-1250P20/UC3542-0650P20/UCP3542-0650P20." For wiring positions of other models, please refer to the actual product appearance.
  • Page 58 No battery mode ...
  • Page 59 Battery mode  Grounding The inverter/charger has a dedicated grounding terminal, which must be grounded reliably. The grounding wire size must be consistent with the recommended load wire size. The grounding connection point shall be as close as possible to the inverter/charger, and the total grounding wire shall be as short as possible.
  • Page 60  Do not ground the AC input L or N terminals between the inverter/charger and the household power distribution cabinet.  Do not ground the AC output L or N terminals.   The cabinet of the inverter/charger is connected to earth through the earth Grounding rail, along with the AC input and output's PE (Protective Earth) terminal.
  • Page 61 Connect the AC load  Risk of electric shock! When wiring the AC load, please disconnect the circuit breaker and ensure that the poles' leads are connected correctly.  The AC loads shall be determined by the continuous output power of the inverter/charger.
  • Page 62 Control logic for main and second power off of AC output  When the battery voltage is lower than the "Under Voltage Warning Voltage," the AC output main power-off relay will be disconnected after a 5-second delay. Once the battery voltage rises above the "Low Voltage Reconnect Voltage,"...
  • Page 63 AC OUTPUT (MAIN) connection  AC OUTPUT (SECOND) connection ...
  • Page 64 Connect the PV modules  Risk of electric shock! The PV array can generate dangerous high-voltage! Disconnect the circuit breaker before wiring, and ensure that the leads of "+" and "-" poles are connected correctly. WARNING  It is forbidden to connect the positive and negative poles of the PV with the ground; otherwise, the inverter/charger will be damaged.
  • Page 65  After the Utility is connected, the PV and battery cannot be grounded. In contrast, the inverter/charger cover must be grounded reliably (to shield the outside electromagnetic interference effectively and prevent the cover from causing electric shock to the human body). There are various types of oil generators with complex output conditions.
  • Page 66 Working principle:  When the battery voltage reaches the Dry Contact ON Voltage, the dry contact is connected. Its coil is energized. The dry contact can drive loads of no more than 125VAC /1A, 30VDC/1A. According to different battery types of the inverter charger, the default values of the Dry Contact ON Voltage and the Dry Contact OFF Voltage are different.

  • Page 67: Operate The Inverter/Charger

    3.5 Operate the inverter/charger Step 1: Double-check whether the wire connection is correct. Step 2: Connect the battery circuit breaker. Step 3: Turn on the power switch. The LCD will be lit, which means the system running is normal. Power switch ...

  • Page 68: Working Modes

    4 Working modes 4.1 Abbreviation Abbreviation Instruction PV power Load power LOAD Battery voltage Low Voltage Disconnect Voltage Low Voltage Reconnect Voltage Low Energy Disconnect SOC Low Energy Disconnect Recover SOC Auxiliary module OFF voltage (namely, Utility charging OFF voltage) Auxiliary module ON voltage (namely, Utility charging ON voltage) Utility Charging OFF SOC Utility Charging ON SOC...

  • Page 69: Off-Grid Working Modes

    4.2 Off-Grid working modes 4.2.1 Battery mode Scenario A: Both PV and Utility are not available. Regardless of the input and output sources, the working mode is as follows. ❶Any of the following is satisfied, the battery supplies the load. ...
  • Page 70 ❷ When the PV power is lower than or equal to the load power, the PV will not charge the battery, the battery will cut in to supply power to the load together with the PV. ≥ LVR ≤ LVD / SOC ≥...
  • Page 71 ❸ Any of the following is satisfied, the Utility supplies power to the load, and the PV prioritizes charging the battery.  The battery voltage is lower than or equal to the LVD value.  The battery SOC is lower than or equal to the LED value.
  • Page 72 ❸ Any of the following is satisfied, the Utility supplies power to the load and charges the battery together with the PV.  The battery voltage is lower than or equal to the AON value.  The battery SOC is lower than or equal to the UCO value.
  • Page 73 Discharging Mode: No impact under any （C-5） Charging Mode: "Utly & solr" ❶ When the PV power is greater than the mode   Utility (MCC*V ), the Utility and PV supply power to the load, and the PV charges the battery simultaneously.
  • Page 74 Discharging Mode: "PV>BP>BT" Charging Mode: "Solar" "BP>PV>BT" （D-2）  The Utility supplies power to the load.  Utility ❶Any of the following is satisfied, the battery Charging Mode: "Solar prior" Discharging Mode: "PV>BT>BP" supplies the load.  The battery voltage is higher than or equal to the AOF value.

  • Page 75: No Battery Mode

    ❷Any of the following is satisfied, the Utility supplies power to the load and charges the battery simultaneously.  The battery voltage is lower than or equal to the AON value.  The battery SOC is lower than or equal to the UCO value.

  • Page 76: On-Grid Working Modes

     Only the Utility supplies power to the load.  Utility 4.3 On-Grid working modes 4.3.1 On-Grid operation procedure Set the “Grid Enable” as “ENABLE” and set “GridLimit Power” as required on the LCD. Detailed procedure as below: 4.3.2 Battery mode Charging Mode: "Solar prior"...
  • Page 77 > (I )+ P ≤ (I )+ P LOAD LOAD ❷ When the PV input power is lower than or equal to the sum of the charging power and the load power, the Utility supplies power to the load and the PV charges the battery. ≤...

  • Page 78: No Battery Mode

    > (I )+ P ≤ (I )+ P LOAD LOAD ❷ When the PV input power is lower than or equal to the sum of the charging power and the load power, while it is greater than the (MCC*V ), the PV charges the battery first, and supplies power to the load together with the Utility.

  • Page 79: Protections

    5 Protections Protections Instruction When the PV array's actual charging current/power exceeds its rated current/power, it will charge the battery as per the rated current/power. When the PV voltage exceeds the bus voltage, the PV input power is constrained PV limit Current/Power by the load power, charging power, the power that the solar panels can deliver, and the current of the PV circuit breaker.
  • Page 80 When the internal temperature overheats, the inverter/charger will stop charging/discharging. Device overheating The inverter/charger will resume charging/discharging when the internal temperature is normal and the protection time lasts more than 20 minutes. UC3522-1250P20 3605W≤P˂4550W 4550W≤P˂5250W 5250W≤P˂7000W P≥7000W...
  • Page 81 Protections Instruction 5350W≤P˂6295W 6295W≤P˂6995W 6995W≤P˂8500W P≥8500W UC3522-1250P20 UC3542-0650P20 Protect after 30 seconds Protect after 10 seconds Protect after 5 seconds Protect immediately UCP3522-1250P20 UCP3542-0650P20 Note: The output is recovered automatically after a delay time of 5s, 10s, and 15s separately. The Utility bypass overload inverter/charger stops working after the 4th protection and can resume working after resetting or restarting.

  • Page 82: Troubleshooting

    6 Troubleshooting After the inverter/charger is powered on, the meter displays the boot screen all the time (unable to enter the home screen) and the red "RUN" indicator flashes. It means the communication with the inverter/charger is error. When the above fault occurs, check whether the CAUTION communication cable is disconnected.

  • Page 83: Pv Faults

    Error ① Fault/Status Indicator Buzzer Solution code Check that the battery actual charging and discharging current does not BAT OCP (Battery over Err37 exceed the setting values of "Battery Max. charging current " and current protection) "Battery limit discharging current." BAT DROP (Battery Check whether the battery connection is normal, and whether the BMS Err39...
  • Page 84 Error ① ② Fault/Status Indicator Buzzer Solution code PV2 OVP (PV2 over Intermitte Check if the PV open-circuit voltage is too high (greater than 500 V). Err18 indicator voltage protection) nt beeps The alarm is released when the PV open-circuit voltage is below 480 V. red on PV2 OCP (PV2 over Err20...

  • Page 85: Inverter Faults

    6.3 Inverter faults Error ① ② Fault/Status Indicator Buzzer Solution code Check if the load actual power exceeds the rated power (namely, the inverter/charger’s continuous output power), disconnect the load INV OCP (Inverter over Err2 completely and turn off the inverter/charger. Wait 5 minutes and then current protection) LOAD Intermitte...
  • Page 86 Error ① ② Fault/Status Indicator Buzzer Solution code INV CURR OFFSET ERR Disconnect the load completely and turn off the inverter/charger. Wait 5 (Inverter current offset Err35 minutes and then turn on the inverter/charger to check if it resumes error) normal.

  • Page 87: Utility Faults

    6.4 Utility faults Error ① ② Fault/Status Indicator Buzzer Solution code Check if the utility voltage exceeds the "Utility Over Voltage Disconnect Voltage," then disconnect the AC input and turn off the AC OVP (AC over voltage GRID indicator Intermittent Err8 inverter/charger.

  • Page 88: Load Faults

    ①The fault/status code is displayed in the "Status" column at the bottom right corner of the LCD. When multiple faults occur simultaneously, the LCD only displays the fault code with the smallest value. ②Set the "BuzzerAlert" as "ON," the buzzer will sound when a fault occurs. After the fault is eliminated, the buzzer will automatically mute. If the "BuzzerAlert"...

  • Page 89: Other Faults For Single Inverter/Charger

    6.6 Other faults for single inverter/charger Error ① Fault/Status Indicator Buzzer Solution code BUS OVP (DC bus over Err0 Turn off the inverter/charger. Wait 5 minutes and then turn on the voltage protection) inverter/charger to check if it resumes normal. If it is still abnormal, BUS UVP (DC bus under Err6 please contact our technical support.

  • Page 90: Bms Faults

    Error ① Fault/Status Indicator Buzzer Solution code LIMITCHG (Low temperature limit Err46 charging) Check whether the ambient temperature is lower than the set "Charge LIMITDISCHG (Low low temperature limit" and "Discharge low temperature limit." temperature limit Err47 discharging) Turn off the inverter/charger. Wait 5 minutes and then turn on the EEP ERR (EEPROM Err54 inverter/charger to check if it resumes normal.

  • Page 91: Maintenance

    7 Maintenance To prevent frequent over-heat protection of the inverter/charger, which may affect system reliability, it is recommended to clean the anti-dust kit once a month. In environments with high temperatures and severe dust pollution, it is advisable to clean the anti-dust kit every two weeks.

  • Page 92: Specifications

    8 Specifications 8.1 UC Series Model UC3542-0650P20 UC5542-1050P20 Utility input 176VAC to 264VAC (Default) Utility Input Voltage 90VAC to 285VAC (Configurable) Utility Input Frequency 45Hz to 65Hz Maximum Utility Charging 100A Current Switch Response Time – Inverter to Utility: 10ms Switch Response Time Switch Response Time –...
  • Page 93 Mounting size (Length x Width) 512mm × 245mm 568mm × 245mm Mounting hole size Φ9mm/Φ10mm Φ9mm/Φ10mm Net Weight 12.7Kg 15.5Kg Model UC3522-1250P20 Utility input 176VAC to 264VAC (Default) Utility Input Voltage 90VAC to 285VAC (Configurable) Utility Input Frequency 45Hz to 65Hz...
  • Page 94 Maximum Utility Charging 110A Current Switch Response Time – Inverter to Utility: 10ms Switch Response Time Switch Response Time – Utility to Inverter (when the load power is higher than 100W): 20ms Utility output Rated Output Voltage 220/230VAC±3% Utility Output Frequency 50/60Hz±0.2% Rated Output Power 100W to 3500W (Default: 2300W)

  • Page 95: Ucp Series

    Battery Maximum Charging 120A Current Others ≤1.5A No-load Losses Test condition: Utility, PV and Load are disconnected, AC output is ON, fan stops, @24V input ≤1.1A Standby Current Test condition: Utility, PV and Load are disconnected, AC output is OFF, fan stops, @24V input Communication with BMS RS485 Communication with Portal...
  • Page 96 100W to 3500W 100W to 5500W Rated Output Power (Default: 2300W) (Default: 3400W) Power Factor 0.99 Inverter output Inverter Rated Power (@30℃) 3500W 5500W 3-second Transient Surge Output 7000W 8500W Power Inverter Output Voltage 220/230VAC±3% Inverter Frequency 50/60Hz±0.2% Output Voltage Waveform Pure sine wave Load Power Factor 0.2－1(VA ≤...
  • Page 97 Test condition: Utility, PV and Load are disconnected, AC output is OFF, fan stops, @48V input Communication with BMS RS485 Communication with Portal RS485 Parallel Function Yes, 12 units in standard, 16 units at most -20℃ to +50℃ (When the environment temperature exceeds Work Temperature Range 30℃, the actual output power is reduced appropriately) Storage Temperature Range...
  • Page 98 Load Power Factor 0.2－1(VA ≤ Rated output power) THDu (Total Harmonic Voltage ≤3% (24V resistive load) Distortion) Maximum Load Efficiency Maximum Inverter Efficiency Maximum Main Load 3500W Maximum Second Load 3500W Main Output Cut-Off Voltage Equal to “Under Voltage Warning Voltage” Second Output Cut-Off Voltage Equal to “Low Voltage Disconnect Voltage”...
  • Page 99 <4000M (If the altitude exceeds 2000 meters, the actual output Altitude power is reduced appropriately) Certifications and Standards IEC 62109-1, IEC 62109-2, IEC 61683, IEC 62368 Mechanical parameters Dimension (Length x Width x 590mm × 300mm × 163mm Height) Mounting size (Length x Width) 568mm ×...

  • Page 100: Dimensions

    9 Dimensions Model: UC3522-1250P20/UCP3522-1250P20 (Unit: mm)
  • Page 101 Model: UC3542-0650P20/UCP3542-0650P20 (Unit: mm)
  • Page 102 Model: UC5542-1050P20/UCP5542-1050P20 (Unit: mm) Any changes without prior notice! Version number: V1.0...
  • Page 104 HUIZHOU EPEVER TECHNOLOGY CO., LTD. Tel: +86-752-3889706 E-mail: info@epever.com Website: www.epever.com...

This manual is also suitable for:

Ucp3522-1250p20Uc3542-0650p20Ucp3542-0650p20Uc5542-1050p20Ucp5542-1050p20

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