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SUNGOLD POWER SPI U Series User Manual
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SUNGOLD POWER SPI U Series User Manual

All-in-one solar charge inverter
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User Manual
All-in-one solar charge inverter
SPI-8K-UP
SPI-10K-UP
V1.0

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Questions and answers

Juan
May 30, 2025

Hello. A general question about hybrid investors. If I install a 3KW output hybrid inverter, would that limit my home to 3KW of consumption even if it is backed by the national network? Can I be sure that all hybrid investors function in the same way? I'm sorry for my English

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1 comments:
Mr. Anderson
May 30, 2025

The context does not mention a 3KW hybrid inverter or its maximum consumption limit, so the maximum consumption limit for a home using a SUNGOLD POWER SPI U Series 3KW hybrid inverter cannot be determined.

Also, not all hybrid inverters operate in the same way. Operation can vary based on model, configuration (single-phase or three-phase), and settings.

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Juan Carlos
May 26, 2025

SPI-1.5K-U Is this hybrid inverter included in the manual? If my home exceeds 1500W of energy, does the inverter take them from the national grid without problems? Thank you in advance

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1 comments:
Mr. Anderson
May 27, 2025

No, the SUNGOLD POWER SPI-1.5K-U hybrid inverter is not included in the manual. The manual only covers models SPI-8K-UP and SPI-10K-UP. Therefore, it cannot be determined from the manual whether the SPI-1.5K-U can draw energy from the national grid.

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Robert Rigo
April 22, 2025

should the battery or inverter be left on at night with only solar charging?

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1 comments:
Mr. Anderson
May 11, 2025

No, the SUNGOLD POWER SPI U Series should not rely only on solar charging at night because solar power is not available at night. Charging modes like "PV-first" or "Only-PV" require sufficient solar power, which is only available during the day. At night, mains or battery power must be used depending on the selected mode.

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Summary of Contents for SUNGOLD POWER SPI U Series

  • Page 1 User Manual All-in-one solar charge inverter SPI-8K-UP SPI-10K-UP V1.0...

  • Page 2: Table Of Contents

    Contents 1. Safety .............................4 1.1 About this Manual .............................4 1.2 Symbols and description .........................4 1.3 Safety matters ............................. 4 2. About the Product ....................... 5 2.1 Description ..............................5 2.2 Features .................................5 2.3 System connection diagram ........................6 2.4 Product overview ............................7 3.
  • Page 3 5.5 Timed charge/discharge function ..................... 49 5.6 Battery parameters ..........................50 6. Communication ........................52 6.1 Overview ..............................52 6.2 USB-B port ..............................52 6.4 RS485/CAN port ............................53 6.5 Dry contact port ............................54 7. Fault Codes and Response Measures ................55 7.1 Fault codes ..............................55 7.2 Troubleshooting ............................

  • Page 4: Safety

    1.1 About this Manual This Manual contains important information, guiding principles, operation, and  maintenance of the product, and applies to the model: SPI U series Users must follow the instructions in this Manual during installation, use, and  maintenance 1.2 Symbols and description...

  • Page 5: About The Product

    2. About the Product 2.1 Description SPI series is a new type of solar storage inverter that integrates PV storage, mains charge, and energy storage and outputs sinusoidal AC. Equipped with DSP control and advanced control algorithm, it has high response speed and good reliability, and applies to industrial scenarios.

  • Page 6: System Connection Diagram

    2.3 System connection diagram The following figure shows the system application scenario of the product. A complete system consists of the following parts: PV module: It converts solar energy into DC to charge batteries or into AC to supply power to loads. Mains or generator: Connected to AC input, it can charge batteries while supplying power to loads.

  • Page 7: Product Overview

    2.4 Product overview LCD screen LED indicator Physical button ON/OFF rocker switch PV input (1/1) Battery (positive electrode) Battery (negative electrode) Dry contact RS485/CAN port WIFI port USB-B port Grounding screw AC output (L1+L2+N) AC input (L1+L2+N) AC input circuit breaker 16 Parallel communication port...

  • Page 8: Installation

    3. Installation 3.1 Installation location SPI series is only for indoor use (protection level: IP20). Before selecting the installation location, users should consider the following factors: A solid wall  Installation height: flush with the line of sight  Sufficient heat dissipation space ...

  • Page 9: Inverter Installation

    3.2 Inverter installation Drill 4 installation holes of the specified sizes on the wall with an electric drill, insert 2 expansion screws above, and fix the inverter with 2 M5 screws below. 3.3 Removal of terminal cover and insect-proof net Remove the insect-proof net when Remove the terminal cover and insect-proof net with a cleaning...

  • Page 10: Wiring

    4. Wiring 4.1 Wiring mode (depends on the output mode) Split-phase mode (default)  AC output Item Description Applicable model SPI series U model AC output phase voltage (L-N) 100 VAC−120 VAC, 120 VAC (default) AC output line voltage (L-L) 200 VAC−240 VAC, 240 VAC (default) Single-phase mode ...

  • Page 13: Cable And Circuit Breaker Model

    4.2 Cable and circuit breaker model INPUT  Inverter Model Cable Size Maximum Input Current Circuit Breaker Model SPI-8K-UP 5 mm² /10 AWG 22 A 2P-25A SPI-10K-UP 5 mm² /10 AWG 22 A 2P-25A AC INPUT  Circuit Output Maximum Inverter Model Diagram Cable Size...

  • Page 14: Ac Input And Output Wiring

    Circuit Inverter Maximum Output Mode Diagram Cable Size Breaker Model Current Model 13mm Split-phase 3P-63A mode (L1/L2/N) (L1\L2\N) SPI-8K-UP 13mm Single-phase 42A (L1/L2) AWG (L1\L2) 2P-125A mode 84 A (N) 26mm AWG (N) L1 and L2 in same phase 13mm Split-phase 3P-63A mode...

  • Page 15: Battery Wiring

    Connect the live wire, neutral wire, and ground wire according to the cable position and sequence shown in the following figure. △ DANGER Before connecting AC input and output, be sure to disconnect the circuit breaker to  avoid the risk of electric shock. Do not conduct live operation. .

  • Page 16: Pv Wiring

    4.5 PV wiring Connect the positive and negative terminals of the two-channel PV modules according to the cable position and sequence shown in the following figure. △ DANGER Before connecting PV modules, be sure to disconnect the circuit breaker to avoid the risk of ...

  • Page 17: Grounding

    4.7 Grounding Please ensure that the grounding terminal is reliably connected to the grounding busbar. ○ ! NOTICE The grounding cable size shall not be less than 4 mm² and shall be as close as possible  to the grounding point 4.8 Inverter start After confirming reliable wiring and correct wiring sequence, restore the terminal cover to its original position...

  • Page 18: Cautions For Parallel Connection

    4.9.2 Cautions for parallel connection Warning: 1. PV wiring: In parallel connection, the PV array of each inverter must be independent, and the PV array of PV1 and PV2 for one inverter must also be independent. 2. Battery wiring In single-phase or three-phase parallel connection, all solar storage inverters must be connected to the same battery, with BAT+ connected to BAT+ and BAT- to BAT-, and before power on and start-up, it is necessary to check and ensure correct connection, wiring length, and cable size, so as to avoid the abnormal operation of parallel system...

  • Page 19: 3Wiring Diagram For Single-Phase Parallel Connection

    7. After the system is correctly wired, powered on, and in normal operation, if a new inverter needs to be connected, make sure to disconnect the battery input, PV input, AC input and AC output, and that all solar storage inverters are powered off before reconnecting into the system.
  • Page 20 Three parallel-connected solar storage inverters: Four parallel-connected solar storage inverters:...
  • Page 21 Five parallel-connected solar storage inverters: Six parallel-connected solar storage inverters:...

  • Page 22: Wiring Diagram For Two-Phase Parallel Connection

    4.9.4 Wiring diagram for two-phase parallel connection (phase difference between L1 and L2: 0°) (1) P1: Set the item [31] to "2P0;" P2: Set the item [31] to "2P1," all of the P1/P2 inverter item [68] can not be set, it is default “0°”and the phase difference between P1 and P2 is 120°. When setting the item [38] to "120 V,"...
  • Page 23 Split-phase system (three inverters) 2+1 system Split-phase system (four inverters) 3+1 system:...
  • Page 24 2+2 system: Split-phase system (five inverters) 4+1 system:...
  • Page 25 3+2 system: Split-phase system (six inverters) 5+1 system:...
  • Page 26 4+2 system: 3+3 system:...

  • Page 27: Wiring Diagram For Split-Phase Parallel Connection

    4.9.5 Wiring diagram for split-phase parallel connection (phase difference between L1 and L2: 180°) Set the item [31] to PAL, and set the item [68] to 180°. When setting the item [38] to "120 V," the L1-L2 voltage is 240 V, and the L1-N voltage is 120 V, L2-N voltage is 120V Two parallel-connected solar storage inverters: Three parallel-connected solar storage inverters:...
  • Page 28 Four parallel-connected solar storage inverters: Five parallel-connected solar storage inverters:...

  • Page 29: Wiring Diagram For Three-Phase Parallel Connection

    Six parallel-connected solar storage inverters: 4.9.6 Wiring diagram for three-phase parallel connection P1: Set the item [31] to "3P1;" P2: Set the item [31] to "3P2;" P3: Set the same to "3P3"， all of P1/P2/P3 inverters item [68] can not be set, it is default “0°” At this point, the P1-P2, P1-P3, and P2-P3 phase difference is 120°.
  • Page 30 Three-phase system (four inverters) 2+1+1 system: Three-phase system (five inverters) 3+1+1 system:...
  • Page 31 2+2+1 system: Three-phase system (six inverters) 2+2+2 system:...
  • Page 32 3+2+1 system: Note: 1) Before powering on and lighting up the screen, check for correct wiring according to the above wiring diagrams to avoid system problems. 2) Check all connections for firm fixing to avoid detachment and abnormal system operation. 3) When connecting the AC output to the load, complete wiring according to the requirements of the electrical load to avoid damage to the load.
  • Page 33 setting the item [38] to "120 V," the voltage between the live wire L1 of P1 phase and the live wire L2 of P2 phase is 240 V, and the L1-N voltage is 120 V In split-phase parallel operation: Set the item [31] to PAL, and set the item [68] to 180°. When setting the item [38] to "120 V," the L1-L2 voltage is 240 V, and the L1-N voltage is 120 V In three-phase parallel operation: P1: Set the item [31] to "3P1;"...

  • Page 34: Operation

    5. Operation 5.1 Operation and display panel The operation and display panel of the inverter includes one LCD screen, three indicators, and four physical buttons Physical button  Physical button Description Enter/Exit the setup menu Go to the next option Go to the previous option Confirm/Enter the option in setup menu LED indicator...
  • Page 35 Display screen  Icon Description Icon Description PV panel Mains Battery Generator The inverter is working Load The inverter is communicating with The buzzer is in mute mode the data collector Power flow direction The inverter is working The inverter is in standby mode normally There is a fault Settings...
  • Page 36 Icon Description Icon Description Load power: 5%−19% SOC: 5%−19% Battery under-voltage Battery over-discharge Overload BMS fault System communication error System under-voltage System overvoltage Too low system temperature Too high system temperature System overcurrent Battery full power User-defined battery Sealed lead-acid battery Flooded lead-acid battery Gel lead-acid battery Ternary Li-ion battery...
  • Page 37 Real-time parameters view  On the screen, press the UP/DOWN button to view real-time data of the inverter in operation ○ ! NOTICE Real-time parameters view Touch UP/DOWN Screen Real-ti parame ters...
  • Page 38 Page Battery AC input Load General Mains input Single-phase PV input voltage Battery voltage Current time voltage voltage Mains input Single-phase PV input current Battery current Current date current current Mains total Single-phase PV gross PV input power Battery voltage input power active power generation...

  • Page 39: Setting

    5.2 Setting View the setting Enter the setting Touch Touch UP/DOWN Screen parameter item Touch ENTER Edit the setting parameter Touch UP/DOWN Modify the parameter content Touch ENTER Touch SET Confirm the parameter content Parameter options Parameter ID...
  • Page 40 Parameter Option Description Exit Exit the setup menu Mains first. Grid power supply is to be applied first. When the PV power is available, and the item 34 is set to "MIX LOD," UTI (default) both the mains and PV power supply power to the load, while the battery only supplies power to the load when the mains is not available.
  • Page 41 Parameter Option Description SPI-8K-UP, setting range: 0 A−180 A Battery charge current SPI-10K-UP, setting range: 0 A−200 A User-defined, and in this type, you can set all battery USER parameters Sealed lead-acid battery Flooded lead-acid battery Battery type GEL ( ) Gel lead-acid battery default LFP battery L14/L15/L16, corresponding to 14, 15, and 16...
  • Page 42 Parameter Option Description Setting range: 48 V − 58 V, with a step of 0.4 V, but only Equalizing charge available for flooded lead-acid batteries, sealed lead-acid voltage batteries, and user-defined ones Setting range: 5 min − 900 min, with a step of 5 min, but only Equalizing charge available for flooded lead-acid batteries, sealed lead-acid duration...
  • Page 43 Parameter Option Description Disable auto switch to mains for loading in case of inverter overload Inverter to bypass switch Enable auto switch to mains for loading in case of inverter ENA ( default overload SPI-8K-UP, setting range: 0 A−100 A Mains charge 60 ( default...
  • Page 44 Parameter Option Description communication PAC = PACE, RDA = Ruida, AOG = Aoguan, OLT = Oliter, HWD = Sunwoda, DAQ = Daqin, WOW = SRNE, PYL = Pylontech, UOL = Vilion DIS ( Disable the function default When item 01 is set to UTI, PV is used first to charge the battery, and then to supply power to the load in case of Grid connection MIXLOD...
  • Page 45 Parameter Option Description charge function After the timed mains charge/loading function is enabled, the power supply mode will turn into SBU, where mains is available for power supply in the set period or after battery over-discharge. If the timed discharge function is enabled at the same time, the power supply mode of the system will be changed into UTI, where mains is only available for power supply in the set charge period, and the system only switches...
  • Page 46 Parameter Option Description discharge cutoff stops (unit: only available during normal communication) SOC setting for When the capacity is greater than the set value, the charge charge cutoff stops (unit: %, only valid during normal BMS communication) When the capacity is less than the set value, it switches to SOC setting for mains (unit:...

  • Page 47: Ac Output Mode

    5.3 AC output mode The AC output mode corresponds to parameter setting items of 01 and 34, allowing users' manual setting Mains first 01 UTI (default)  The mains first supplies power. When PV is available, mains and PV can supply power to the load at the same time.

  • Page 48: Battery Charge Mode

    5.4 Battery charge mode The charge mode corresponds to the parameter setting item 06, allowing users' manual setting. Mix charge SNU (default)  Both PV and mains charge the battery, with PV used first, and mains as a supplement during insufficient PV power. This is the fastest charge method, suitable to provide users with sufficient backup power in areas where the power supply is insufficient.

  • Page 49: Timed Charge/Discharge Function

    5.5 Timed charge/discharge function SPI series has the timed power charge/discharge function. Users can set different charge and discharge periods according to the local time-of-use price, thus reasonably using mains and PV power. When mains is expensive, the battery inverter is used to supply power to the load; when mains is cheap, it can be used to supply power to and charge the load, thus helping users reduce electricity expenses to the full extent.

  • Page 50: Battery Parameters

    5.6 Battery parameters Lead-acid battery  Sealed Flooded Gel lead-acid User-defined Lead-acid Lead-acid Parameter/Battery Type battery Battery Battery Battery Overvoltage disconnect voltage 60 V 60 V 60 V 60 V Equalizing charge voltage 58 V 56.8 V 58 V 40 V−60 V (settable) Boost charge voltage 57.6 V 56.8 V...
  • Page 51 Li-ion battery  Ternary Li-ion User-defined LFP Battery Parameter/Battery Type Battery Battery Overvoltage disconnect 60 V 60 V 60 V 60 V 60 V 60 V voltage 40 V−60 V Equalizing charge voltage (settable) 40 V−60 V Boost charge voltage 53.2 V 57.6 V 56.8 V...

  • Page 52: Communication

    6. Communication 6.1 Overview USB-B port WIFI port RS485/CAN port Dry contact port Parallel port 6.2 USB-B port USB typeB USB 2.0 printer connecting cable Users can use the upper computer software through the port to read and modify device parameters.

  • Page 53: Rs485/Can Port

    6.3 WIFI port The WIFI port is used to connect to the Wi-Fi/GPRS data acquisition module, and then users can view the operation status and parameters of the inverter via the mobile APP. RJ45 Definition Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6...

  • Page 54: Dry Contact Port

    6.5 Dry contact port The dry contact port has 4 functions: 1. Remote ON/OFF 2. ON/OFF signal output 3. Battery temperature sampling 4. Remote generator start/stop ON/OFF signal output Temperature sampling (reserved) Remote ON/OFF Generator ON/OFF signal Function Description When pin 1 is connected to pin 2, the inverter will turn off the AC output. When Remote ON/OFF disconnected, the inverter is in normal output.

  • Page 55: Fault Codes And Response Measures

    7. Fault Codes and Response Measures 7.1 Fault codes Fault Code Alarm Affect Fault Meaning Output or Description Code Battery under-voltage alarm BatVoltLow Overcurrent software protection for average BatOverCurrSw battery discharge current BatOpen Disconnected battery alarm BatLowEod Under-voltage battery discharge stop alarm BatOverCurrHw Battery overcurrent hardware protection BatOverVolt...
  • Page 56 Inverter heat sink over-temperature OverTemperInv protection FanFail Fan fault EEPROM Memory fault ModelNumErr Model setting error Busdiff Positive and negative bus voltage imbalance BusShort Bus short-circuit Inverter AC output backward to bypass AC Rlyshort output LinePhaseErr Mains input phase error BusVoltLow Bus low-voltage protection Alarm of battery capacity rate below 10%...
  • Page 57 resistancefault PV2+, and PV- Leakagecurrent System current leakage out of the standard overloadfault BMSComErr BMS communication fault BMS under-temperature alarm (taking effect BMSUnderTem after BMS communication is successful) BMS over-temperature alarm (taking effect BMSOverTem after BMS communication is successful) BMS overcurrent alarm (taking effect after BMSOverCur BMS communication is successful) BMS under-voltage alarm (taking effect after...

  • Page 58: Troubleshooting

    7.2 Troubleshooting Fault Meaning Cause Solution Code Check if the battery air-switch or PV There is no power input, air-switch has been closed; check if the No screen display or the device switch at its switch is in "ON"; press any button on the bottom is not turned on screen to exit the screen sleep mode.

  • Page 59: Protection Function And Product Maintenance

    temperature of the heat sink for inverter heat sink for output exceeds 90°C for inverter output (software detection) Software detection founds Shut down, manually flick the fan, and Fan fault the fan has a fault check if any foreign objects are blocking it Manually shut down, and restart.
  • Page 60 Mains input When the mains voltage of each phase is lower than 90 VAC, it will under-voltage stop mains from charge, and switch it to inverter output protection When the battery voltage reaches the overvoltage disconnect Battery overvoltage voltage threshold, it will automatically stop PV and mains from protection charging the battery, thus preventing damage to the battery due to overcharge...

  • Page 61: Maintenance

    8.2 Maintenance In order to maintain the best long-term performance, it is recommended to conduct following checks twice a year. Make sure that the airflow around the inverter is smooth, and remove any dirt or debris from the heat sink. Check whether the insulation of all exposed wires is damaged by exposure to sunlight, friction with other objects around them, dryness, bite by insects or rodents, etc.

  • Page 62: Parameter Table

    9. Parameter Table SPI-8K-UP SPI-10K-UP Inverter Model Settable Inverter output Rated output power 8,000 W 10,000 W Maximum peak power 16,000 W 20,000 W Rated output voltage 120/240 VAC (single-phase/split-phase) Loading motor capacity 5 HP 6 HP Rated frequency 50/60 Hz Output wave Pure sine wave Switching time...
  • Page 63 Maximum input power 11,000 W Maximum Input 22/22 A Current Maximum open circuit 500 Vdc voltage MPPT operating 125 Vdc−425 Vdc voltage range Mains/generator input Input voltage range 90 VAC−140 VAC Input frequency range 50/60 Hz Bypass overload current 63 A Efficiency MPPT tracking 99.9%...

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