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SUNGOLD POWER SG11.4KHB-HV User Manual

High voltage hybrid split phase residential energy storage inverter
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User Manual
High Voltage Hybrid Split Phase
Residential Energy Storage Inverter
Version 1.0 Release Date: 06/2024
Applicable Models:
SG11.4KHB-HV

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Summary of Contents for SUNGOLD POWER SG11.4KHB-HV

  • Page 1 User Manual High Voltage Hybrid Split Phase Residential Energy Storage Inverter Applicable Models: SG11.4KHB-HV Version 1.0 Release Date: 06/2024...

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction...................... 1.1 Inverter Description..................1.2 Included Components ................. 1.3 Tools Required for Installation ..............1.4 Inverter Storage ..................2. Safety & Warning........................2.1 Safety ......................2.2 General Safety Instructions ................. 2.3 Notice for Use..................... 2.4 Notice for Disposal ..................2.5 Protection Circuitry and Controls..............
  • Page 3 Table of Contents 7. Troubleshooting........................8. Specifications........................9. Appendix..........................9.1 Temperature Derating Curve..............9.2 Inverter Internal Toplogy................9.3 Default Grid Setting for IEEE1547-2018............

  • Page 4: Introduction

    1. Introduction 1.1 Inverter Description The Sun Gold Power Hybrid series is designed for residential applications. The inverter can work with high-voltage lithium ion batteries to maximize self-consumption and provide backup power if the grid fails and there is not enough PV power to cover load demand. This inverter can operate in both on-grid and off-grid applications.
  • Page 5 1. Introduction Mounting Bracket Hook Carrying Handle DC Disconnect Switch 1 in. Knockout for DC PV Sun Gold Power Data Logger (sold separately) Figure 1.3 Right Side View Mounting Bracket Hook Carrying Handle AC Bypass Switch Rapid Shutdown Initiation Switch 1 ½...
  • Page 6 1. Introduction Heat Sink for Convective Cooling 1 ½ in. Knockout for AC Grid or Backup 1 in. Knockout for DC Battery or PV Figure 1.5 Back View Figure 1.6 Top View...

  • Page 7: Included Components

    1. Introduction 1.2 Components Included with the Inverter If any of these items are missing, please contact your local Sun Gold Power distributor or the Sun Gold Power service team. Install spare screws Back mounting plate Inverter Mounting Bracket x1 Stabilizing Set Screws x4 mounting screws x4 Inverter x1...

  • Page 8: Inverter Storage

    1. Introduction 1.4 Inverter Storage ● If the inverter is not installed immediately, please abide by the storage instructions and environmental conditions listed below. ● Use the original box to repackage the inverter, seal with adhesive tape with the desiccant inside the box.

  • Page 9: Safety & Warning

    2. Safety & Warning 2.1 Safety The following types of safety instructions and general information appear in this document as described below: DANGER “Danger” indicates a hazardous situation which if not avoided, will result in death or serious injury. WARNING “Warning”...
  • Page 10 2. Safety & Warning WARNING To reduce the risk of fire, over-current protective devices (OCPD) are required for all circuits connected to the inverter. The DC OCPD shall be installed per local requirements. All photovoltaic source and output circuit conductors shall have isolators that comply with the NEC Article 690, Part II.

  • Page 11: Notice For Use

    2. Safety & Warning 2.3 Notice for Use The inverter has been constructed according to the applicable safety and technical guidelines. Use the inverter in installations that meet the following specifications only: 1. Permanent installation is required. 2. The electrical installation must be compliant with all local and national regulations & standards.

  • Page 12: Overview

    3. Overview 3.1 LED Indicator Lights There are five indicators on the The Inverter(Battery,Power,WiFi.Ethernet and Bluetooth)which indicate the working status of the inverter. The Bluetooth Antenna or WiFi data logger shall be installed at the Antenna/COM port of the hybrid inverter before local debugging.

  • Page 13: Inverter Wire Box And Connection Points

    3. Overview 3.2 Inverter Wire Box and Connection Points 4.Logger 3. Battery 5. AC-Backup 2. PV 6. AC Grid 7.Bluetooth Antenna 8. COM 9.External RSD Switch Name Description This is the DC disconnect switch for the inverter 1. DC Switch Conduit and PV conductors should be connected here 2.

  • Page 14: Operating Modes

    4. Operating Modes 4.1 PV-Only 4.1.1 Grid-Tie PV String Inverter The hybrid can function as a grid-tie PV string inverter with no battery. It will use PV power to supply the home loads while the grid is active. The inverter does have export power control so it can be programmed to sell the excess power back to the grid.

  • Page 15: Energy Storage

    4. Operating Modes 4.2 Energy Storage 4.2.1 Overview of Energy Storage Modes The hybrid is capable of providing AC power to home loads using PV and battery power in the event of a grid failure. This is known as backup power. The amount of backup power that each hybrid model can provide is equal to the amount of on-grid power that it can provide.
  • Page 16 4. Operating Modes Off-Grid Home No Grid Battery Hybrid Figure 4.5 Off-grid power with Sun Gold Power hybrid 4.2.2 Backup Power This inverter is capable of providing AC power to home loads using PV and battery power in the event of a grid failure. When the inverter senses that the grid power has been lost, it automatically opens the relay connecting itself to the grid.
  • Page 17 4. Operating Modes The homeowner will need to be consulted to understand why they are installing a battery. It should also be determined how much power is consumed, how much power the PV will generate, how much storage power there will be, and which loads are to be backed up in the event of a power outage (grid failure).
  • Page 18 4. Operating Modes Feed-in-Priority This mode can be thought of as export priority mode. The system will first supply the home loads with PV power and then it will seek to export the excess PV power, up to the set limit. Once the limit is reached, the remaining power will be stored in the battery.

  • Page 19: Ac-Coupling

    4. Operating Modes 4.2.5 AC-Coupling The Sun Gold Power hybrid can be AC-coupled or DC-coupled to a home. AC-coupled means that the energy storage is connected to the AC-side of the system. Typically, the battery and inverter pair are connected in parallel with an existing PV system. The battery will charge with PV power that gets converted from DC, to AC, and then back to DC again.
  • Page 20 4. Operating Modes AC-Coupling for Backup Power & Energy Arbitrage The hybrid is able to provide backup power when AC-coupled. However, an additional load center will need to be installed and connected to the backup ports of the hybrid. Then, loads will be need to be relocated from the existing main load center into the backup load center.
  • Page 21 4. Operating Modes 4.2.6 DC Coupling DC-coupling is the recommended configuration for this inverter. This is because DC-coupling allows the full potential of this inverter to be utilized, maximizing the efficiency of the PV-to-battery charging. In a DC-coupled system, the PV also gets connected to the inverter in addition to the battery. The inverter will charge the battery directly with DC power from the PV.
  • Page 22 4. Operating Modes Whole-Home Backup To achieve whole-home backup, the system must be configured such that all of the home loads are backed up in the event of a grid failure. It must be determined what the maximum continuous current should be in order to meet the needs of the home. Two hybrid inverters can be installed in parallel with PV and batteries to provide even more continuous backup power.

  • Page 23: Installation

    5. Installation 5.1 Select a Location to Install the Inverter When selecting a location for the inverter, the following criteria should be considered: Exposure to direct sunlight may cause output power derating due to overheating It is recommended to avoid installing the inverter in direct sunlight. The ideal location is one where the ambient temperature does not exceed 40°C (140°F) It is also recommended to install the inverter somewhere the rain and snow will not land directly on it.
  • Page 24 5. Installation When selecting a location for the inverter, consider the following: WARNING: Risk of fire Despite careful construction, electrical devices can cause fires. Do not install the inverter in areas containing highly flammable materials or gases. Keep the inverter out of reach of children if children may be present. Do not install the inverter in potentially explosive environments.

  • Page 25: Avoiding Direct Sunlight

    5. Installation 5.1.4 Avoiding direct sunlight Installation of the inverter in a location exposed to direct sunlight should to be avoided. Direct exposure to sunlight could cause: ● Power output limitation (with a resulting decreased energy production by the system). ●...

  • Page 26: Mounting The Inverter

    5. Installation 5.3 Mounting the Inverter Mount the inverter on a wall or structure capable of bearing the weight of the machine The inverter must be mounted upright on a vertical structure with a tilt of 90°. A tilt greater or less than 90°...
  • Page 27 5. Installation Length Width Depth 28.5 in. (723.9 mm) 19.1 in. 5.38 in. (485 mm) (136.5 mm) 22.5 in. 9.5 in. (571.5mm) (241.3 mm) Figure 5.6 Inverter Dimensions Figure 5.7 Inverter Bracket Dimensions Once a suitable location has been found according to 5.2 and 5.3, use figures 5.6 and 5.7 to mount the bracket to the wall.
  • Page 28 5. Installation NOTE: The inverter must be mounted vertically at a 90° angle. Four fasteners must be used to ensure the bracket does not come off the wall. At least two must embed in a wall stud to bear the inverter weight. Bracket Fasteners Figure 5.8 Fix the bracket to the wall...

  • Page 29: Inverter Wiring Overview

    5. Installation 5.4 Inverter Wiring Overview Connection Points Purpose PV DC connection From the PV array to the DC+ PV Cables and DC- terminals in the inverter to the inverter Battery DC connection From the battery (+) and (-) terminals to Battery Cables the inverter BAT+ and BAT- terminals to the inverter...

  • Page 30: Wiring Diagram Overview

    5. Installation 5.5 Wiring Diagram Overview...

  • Page 31: External Grounding

    5. Installation 5.6 External Grounding An optional external ground connection point is available on the right side of inverter. The internal ground bar is grounded to the inverter chassis. Figure 5.11 External Grounding Conductor Terminal Location To connect the grounding terminal on the heat sink, please follow the steps below: 1.

  • Page 32: Pv Cable Installation

    5. Installation 5.7 PV Cable Installation DANGER: Before installing the PV cables, be sure that the PV array is disconnected. Use a multimeter to verify that the PV string voltages are 0V before proceeding. If rapid shutdown is being used, then under 30Vdc per string is safe. Please verify the following before connecting the PV strings to the inverter: Ensure the DC voltage of the PV strings will not exceed the maximum DC input voltage (600Vdc).

  • Page 33: Rapid Shutdown

    5. Installation 5.8 Rapid Shutdown 5.8.1 Integrated Rapid Shutdown Important Note The inverter comes (optional) with an internal rapid shutdown transmitter. This transmitter brand must match the receivers that are being installed with the PV modules. Not abiding by this will void the inverter warranty. How the inverter achieves module-level rapid shutdown: The internal transmitter generates a PLC signal when it receives AC power.
  • Page 34 5. Installation 5.8.2 External Rapid Shutdown If the inverter is being installed where it is inaccessible to first responders, an external rapid shutdown switch must be installed somewhere it is accessible. Steps for Installing an External Rapid Shutdown Initiation Switch 1.

  • Page 35: Battery Cable Installation

    63A. NOTE: Before connecting the battery, please carefully read the product manual of the battery and perform the installation exactly as the battery manufacturer specifies in the manual SG11.4KHB-HV Model Battery Cable Max. Wire Size 6 AWG Accepted by Terminal...

  • Page 36: Ac Wiring

    The Backup-side of the inverter stays energized as long as there is enough PV and battery power to support the loads on the Backup-side. The inverter can be connected to other hybrids in parallel to provide additional support to the backup loads. Generator support will be available in Summer 2023. SG11.4KHB-HV Model AC Grid Cable Max.
  • Page 37 5. Installation 5.10.2 Installing the AC cables WARNING: WARNING: Conductors terminated in the backup ports of the inverter must be connected to Conductors terminated in the backup ports of the inverter must be connected to an isolated load center that is not directly connected to the utility. This ensures an isolated load center that is not directly connected to the utility.
  • Page 38 5. Installation 5.10.4 AC Bypass Switch This failsafe switch determines the power source for the inverter backup circuit. If the inverter fails or has a critical alarm, the backup circuit will shut off. Should this occur, the switch set to 1 allows power to pass through the inverter to the backup from the grid. The switch settings operate as follows: BYPASS (1) the backup circuit is powered by the grid directly.
  • Page 39 5. Installation 5.10.5 Paralleling Multiple Hybrid Inverters Up to three hybrid inverters can be installed together in parallel on the backup side of the system. The backup ports of each inverter would terminate in separate overcurrent protection devices within the backup load center. The three inverters get connected together with ethernet cables. Backup Combiner Load Center In the diagrams of this manual a Backup Combiner Load Center is often shown that is additional to the Backup Home Load Center.
  • Page 40 5. Installation 5.10.6 Generator Integration The generator must be connected to the grid-side of the inverter. For purely off-grid systems, a generator can be used as a grid replacement. The inverter uses dry contact to turn the generator on when the battery SOC reaches a specified limit. Generator power is used to charge the batteries and feed the home loads when the PV power is insufficient.
  • Page 41 5. Installation 5.10.7 AC-Coupled PV for Backup An existing PV system can be AC-coupled to the backup side so that it can be supported when the grid is down. The acronym “ACPV” will be used to generically describe any existing PV system that will be AC-coupled with the energy storage and backup.

  • Page 42: Inverter Communication

    5. Installation 5.11 Inverter Communication 5.11.1 Communication Terminals Overview 9 10 11 12 13 14 15 16 RS485-OUT RS485-OUT Figure 5.24 Inverter communication terminals The inverter communication terminal block consists of 16 ports. From left to right, the chart below explains what purpose of each port is. Acceptable Port Function...
  • Page 43 5. Installation Installing the communication wires: First, strip ¼ inch off the end of the com wire. 1. Insert a technician screwdriver into the slot the orange tab and gently pull up with it. 2. Insert the stripped com wire into the terminal. 3.

  • Page 44: Battery Communication

    5. Installation NOTE: Export power shows as a positive value and import power shows as a negative value. 5.11.3 Battery Communication CAN Communication Connect a CAT5 cable to the battery CAN port and run the cable to the inverter. Split the cable at the inverter end, then connect the blue wire (pin #4) to BMS_CAN_H and the blue-white wire to BMS_CAN_L (pin #5) RS485 Communication (LG batteries only) Run a CAT5 cable between the battery and the inverter.
  • Page 45 5. Installation Note: Some alarm codes are being relayed from the battery. These alarms are caused by an issue with the battery itself. The troubleshooting section of this manual explains how to diagnose and treat each alarm. If the alarm says the battery is having a malfunction, please contact the battery manufacturer.
  • Page 46 5. Installation Prior to doing the parallel setup, it is essential to verify the individual normal functioning of each inverter. By this way you can avoid parallel inverter anomalies caused by the original parameter settings of a single inverter. Set each inverter one by one and make sure they work fine and there are no alarms and then connect the parallel cable as explained above.
  • Page 47 5. Installation 5.11.4.1 Parallel Inverter Communication There are two RJ45 ports reserved for communication between Sun Gold Power hybrids only. The communication is CAN and is the ports are not able to be used for any other purpose besides daisy-chaining Sun Gold Power hybrids together. Steps for connecting daisy-chaining two inverters together: Use a double-ended CAT5 networking cable with a reinforced shielding layer.
  • Page 48 5. Installation 5.11.4.2 Parallel parameter setting Step1: Enter Solicsloud APP and click the "Setting" interface, then go to "Parallel Settings". Step2: Set the slave to the following parameters. Step3: Set the master to the following parameters. Step2 Step3 Note: When the system is operating in parallel, then working modes and other Settings can be synchronously set through the Master, rather than setting them separately for each slave inverters.

  • Page 49: Emergency Power Off (Epo)

    5. Installation 5.11.5 Emergency Power Off (EPO) An external emergency power off switch can be added to the system. There are two pins on the communication terminal block designated for such a switch. When this switch is engaged, the inverter will cease to operate and it will also turn off the AC backup.
  • Page 50 5. Installation 5.11.7 RS485 Connection The inverter RS485 can be accessed in one of three ways. Firstly, RS485 IN/OUT can be used for external 485 communication. RJ45 4PIN and 5PIN are used for external 485 communication wiring. RS485 IN and RS485 OUT are connected in parallel internally, and can be connected to any interface.
  • Page 51 5. Installation An internal connection to the inverter RS485 can be made. However, it requires the procurement of a 4-pin male JST connector. Please see the figure below for the RS485 pinout of the inverter. Step 1: Connect the male end of a 4-pin JST connector to the end of an RS485 cable Step 2: Unplug the RS485 cable that is currently going into the “WIFI-485”...

  • Page 52: Commissioning

    6. Commissioning 6.1 Pre-Commissioning Steps Visually inspect each piece of equipment in the system closely. Check all conduit and cable connection points to ensure they are tight. Verify that all system components have adequate space for ventilation. Follow each cable to ensure that they are all terminated in the proper places. E nsure that all warning signs and labels are affixed on the system equipment.
  • Page 53 6. Commissioning Step 4: Turn your phone Bluetooth on and then open the SolarEnergy app. Tap “Service”, then tap “Local Operation”, and then tap ”Connect with Bluetooth”. The name of the inverter Bluetooth network will display as “INV_” and then the inverter serial number.
  • Page 54 6. Commissioning Tap the toggle switch for Follow Phone Time to match the inverter time to your phone time or manually set the time yourself, then tap Next Step. Select the battery that is installed, and if no battery is installed, then tap No Battery.Tap Next step, and then verify that Acrel 1P Meter is selected.
  • Page 55 6. Commissioning The Work Mode is the energy storage operating mode of the inverter. Please see the logic tables on pages 14 through 15 for explanations on how the modes operate to determine which one you should select for each system. Upon selecting the mode, you will need to toggle the on switch for that mode.
  • Page 56 6. Commissioning The Peak-shaving Mode has additional settings for Max. useable Grid Power and Peak SOC. Max. useable Grid Power is the most amount of power that the inverter can import from the grid to cover load demand. The Peak SOC is the target state-of-charge percentage that the system will try to reach by the time the peak window starts.
  • Page 57 6. Commissioning Step 7: Next, tap Backup Setting from the main Setting menu. If Backup is being installed, toggle on the Backup Port Enabling Setting switch. Keep this setting turned off if there is not going to be any backup for this system. Step 8: If there is an existing PV system being AC-coupled to the Sun Gold Power, please follow this next step, and if not then skip this step.
  • Page 58 6. Commissioning Step 9: If there are multiple Sun Gold Power hybrid inverters connected in parallel, please follow this step. If there is only one hybrid in the system, this step can be skipped. Tap Parallel Setting and then tap Parallel Mode. Change this from Single to Parallel, then tap Save. Next, change the Physical Address ID of the slave inverter(s) to 2, 3,..
  • Page 59 6. Commissioning Step 10: The battery settings can be adjusted by tapping on Battery Settings from the main settings screen. Peak-shaving setting should be enabled if the peak-shaving mode is being used. Max. grid power when Force charging determines how much power the battery will be float-charged with if the battery SOC reaches the Force Charge SOC.
  • Page 60 6. Commissioning Step 12: Now that the settings are done, the system will begin to generate after about five minutes. The main screen, or homepage provides an overview of the system. It can quickly be determined if the battery is communicating normally or not and what the SOC is. The image below explains what each icon represents.

  • Page 61: Troubleshooting

    7. Troubleshooting If the inverter is having an issue, it will show it in one of the following ways: (1) the Inverter (circle) LED indicator light will flash orange. (2) the inverter status will be an alarm code (3) an alarm code will display on SolarEnergy or (4) the inverter will simply be off.
  • Page 62 7. Troubleshooting Alarm Message Failure description Solution 1. Check if there is an arc in the PV ARC-FAULT ARC detected in DC circuit connection and restart inverter. AFCI Check FAULT AFCI module self check fault 1. Restart inverter or contact installer. DCinj-FAULT High DC injection current 1.
  • Page 63 7. Troubleshooting Alarm Message Failure description Solution Over DC voltage OV-DC01/02/03/04 1. Reduce the module number in series. 1. Restart inverter. 2. Identify and remove the string of the DC input overcurrent OV-DCA-I faulted MPPT. 3. Change power board. 1. Resistance of AC Cable is too high. Increase the gauge of grid cables.

  • Page 64: Supplemental Information

    7. Troubleshooting Alarm Message Failure description Solution 1. Check inverter inductor connection. Under DC bus voltage UN-BUS01/02 2. Check driver connection. Under grid frequency UN-G-F01/02 1. Use user define function to adjust the protection limit if it’s allowed by electrical company. Under grid voltage UN-G-V01/02 12V power supply fault...

  • Page 65: Specifications

    8. Specifications Technical Data SG11.4KHB-HV Input DC (PV side) Recommended max. PV power 18,240W Max. input voltage 600V Rated voltage 380V Start-up voltage MPPT voltage range 80-550V Full load MPPT voltage range 245-450V Max. input current per string Max. short circuit current per string 25.6A...
  • Page 66 8. Specifications Technical Data SG11.4KHB-HV AC Output (Backup and Off-grid) Rated output power 11.4kW Max. apparent output power 18.2 kVA, 10 sec Back-up switch time ＜10 ms Phase Power 240V Split-Phase Rated AC output voltage 240 V AC output voltage range...
  • Page 67 8. Specifications Technical Data SG11.4KHB-HV General data Dimensions(H/W/D) 29.53*22.05*8.66 in (750*560*220mm) Weight 71.74 Ibs (32.54 kg) Topology Transformerless Operation temperature range -25~+60 ℃/-13~+140 ℉ Ingress protection TYPE 4X (IP66) Noise emission (Typical) <30 dB (A) Cooling method Natural convection Max.operation altitude 13,120 ft (4000 m) UL1741 SB, UL1741 SA, IEEE1547.1-2020, UL1699B, UL1998,...

  • Page 68: Appendix

    9. Appendix 9.1 Temperature Derating Curve (120.2°F) (131°F) (140°F) 9.2 Inverter Internal Topology Overview...

  • Page 69: Default Grid Setting For Ieee1547-2018

    9. Appendix 9.3 Default Grid Setting for IEEE1547-2018 Adjustment Default Parameter Description (p.u.) Range (p.u.) Set grid over-voltage protection 01 value OV-G-V01 1.10< V ≤1.21 1.10 p.u. OV-G-V01-T Grid over-voltage protection 01 trip time 13 S 0.1-13 S Set grid over-voltage protection 02 value OV-G-V02 1.20<...
  • Page 70 9. Appendix Adjustment Default Parameter Description Range (p.u.) (p.u.) Set the time to ramp up to 90% of the new active 10 S 0.5-60 S Volt Watt P3Tau power target in response to the change in voltage Set the time to ramp up to 90% of the new reactive Volt Var Q3Tau 1-90 S power target in response to the change in voltage...
  • Page 71 Sun Gold Power Inc. 72 Fairbanks suite100 | Irvine, California | 92618 If you encounter any problems with the inverter, please take note of the inverter serial number and then contact us using the phone number or email listed above. Compliant with CA Rule 21 &...

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