SunSynk SUN-25K-SG01HP3-EU-BM2 User guide

v.14 (03/29/23)
INSTALLER MANUAL
SUN-25K-SG01HP3-EU-BM2 / SUN-30K-SG01HP3-EU-BM3
SUN-40K-SG01HP3-EU-BM4 / SUN-50K-SG01HP3-EU-BM4
Global Tech China Ltd, 3 Floor, Wai Yip Industrial Building.
171 Wai Yip Street, Kwun Tong, Kowloon, Hong Kong.
Tel: [phone] Fax: [phone]
www.sunsynk.com / [email protected]
THREE-PHASE
HYBRID INVERTER
PLEASE RETAIN FOR
FUTURE REFERENCE

THREE PHASE HI 25/50kW | Installer Manual2
PREFACE
This Installer Manual contains information for proper installation, operation, maintenance, and care of the
Sunsynk Three-Phase Hybrid Inverter. A deep understanding of the instructions described in this document
will help you get the most out of your new inverter.
This document should be read thoroughly, and all the procedures described in this manual should be
followed carefully. If you have questions or concerns about this product's operation and maintenance,
please get in touch with our customer support.
All personnel involved in this machine's installation, setup, operation, maintenance, and repair should read
and understand this manual, mainly its safety instructions. Substandard performance and longevity, property
damage, and personal injury may result from not knowing and following these instructions.
In order to ensure long product life, Sunsynk recommends that you utilize the product and perform
maintenance by correctly following the instructions described in this guide. The manufacturer's warranty
does not cover any damage resulting from the neglect of these instructions.
Sunsynk assumes no liability for damage caused by the operation contrary to what is specied in this
operating manual.
All information in this User Guide is based on the latest product information available at the time of printing
approval. Sunsynk reserves the right to make changes at any time without notice and without incurring any
obligation.
Please always keep this manual with the inverter as a reference for everyone using this product.

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Table of Contents
1. SAFETY 6
1.1. General Safety 6
1.2. Symbols 6
1.3. Safety Instructions 7
1.4. Disposal Remarks 7
2. PRODUCT INTRODUCTION 8
2.1. System Overview 8
2.2. Product Size 9
2.3. Features 10
2.4. Basic System Architecture 11
3. TECHNICAL SPECIFICATIONS 12
4. INSTALLATION 14
4.1. Parts List 14
4.2. Selecting the Mounting Area 15
4.3. Mounting the Inverter 16
4.4. Function Port Denition 18
4.5. Battery Connection 19
4.6. Grid Connection and Backup Load Connection 21
4.7. PV Connection 22
4.7.1. PV Module Selection 22
4.7.2. PV Module Wiring 23
4.8. Connecting the CT Coil 25
4.9. Meter Connection 26
4.9.1. System Connection for the CHNT Meter 26
4.9.2. System Connection for the CHNT Meter with CT Coil 27
4.10. Earth Connection (MANDATORY) 28
4.11. Wiring System for Inverter 29
4.12. Wiring Diagram 30
4.13. Typical Application Diagram of Diesel Generator 32
4.14. Three Phase Parallel Connection Diagram 33
5. OPERATION 34
5.1. Switching ON/OFF 34

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5.2. Display 34
5.2.1. LED indicators 34
5.2.2. Function buttons 34
5.3. LCD operation ow chart 35
5.4. Home page 36
5.5. Status Page 36
5.6. System Flow Page 37
5.7. Setup Page 38
5.8. Basic Setup 39
5.8.1. Set Time (Clock) 39
5.8.2. Set Company Name / Beeper / Auto dim 39
5.8.3. Factory Reset and Lock Code 40
5.9. Battery Setup Page 41
5.10. Generator & Battery Page 42
5.11. Battery Discharge Page 44
5.12. Setting Up a Lithium Battery 46
5.13. Program Charge & Discharge Times 52
5.14. Grid Supply Page 56
5.15. Advanced Settings for Paralleling Inverters 60
5.16. Connecting the DRM’s 63
5.18. Advanced Function Setup 64
5.17. Solar Power Generated 64
5.19. Grid Power 65
5.20. Advanced Settings for Wind Turbines 66
5.21. Advanced Settings for Auxiliary Load 67
6. Operation Modes 70
6.1. Mode I: Basic 70
6.2. Mode II: With Generator 70
6.3. Mode III: With Smart-Load 71
6.4. Mode IV: AC Couple 71
7. Fault Codes 72
8. COMMISSIONING 77
8.1. Start-Up / Shutdown Procedure 77
8.2. Information for Commissioning the Inverter 77
8.3. GDFI Fault 78

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9. MAINTENANCE 78
APPENDIX A 79
APPENDIX B 81

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1. SAFETY
This device should only be used in accordance with the instructions within this manual and in compli-
ance with local, regional, and national laws and regulations. Only allow this device to be installed, operat-
ed, maintained, and repaired by other person(s) who have read and understood this manual. Ensure the
manual is included with this device should it be passed to a third party.
DO NOT allow minors, untrained personnel, or person(s) suering from a physical or mental impairment
that would aect their ability to follow this manual, install, maintain or repair this device.
Any untrained personnel who might get near this device while it is in operation MUST be informed that it
is dangerous and instructed carefully on how to avoid injury.
1.1. General Safety
1.2. Symbols
WARNING This symbol indicates information that if ignored, could result in personal
injury or even death due to incorrect handling.
CAUTION This symbol indicates information that if ignored, could result in personal
injury or physical damage due to incorrect handling.
PLEASE NOTE Indicates information that is considered important, but not hazard-related.

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1.3. Safety Instructions
This chapter contains important safety and operating instructions. Read and keep this manual for future
reference.
Before using the inverter, please read the instructions and warning signs of the battery and correspond-
ing sections in the instruction manual.
Do not disassemble the inverter. If you need maintenance or repair, take it to a professional service
center.
Improper reassembly may result in electric shock or re.
To reduce risk of electric shock, disconnect all wires before attempting any maintenance or cleaning.
Turning o the unit will not reduce this risk.
Never charge a frozen battery.
For optimum operation of this inverter, please follow required specication to select appropriate cable
size. It is very important to correctly operate this inverter.
Be very cautious when working with metal tools on or around batteries. Dropping a tool may cause a
spark or short circuit in batteries or other electrical parts, even cause an explosion.
Please strictly follow installation procedure when you want to disconnect AC or DC terminals.
Please refer to "Installation" section of this manual for the details.
Grounding instructions - this inverter should be connected to a permanent grounded wiring system. Be
sure to comply with local requirements and regulation to install this inverter.
Never cause AC output and DC input short circuited. Do not connect to the mains when DC input short
circuits.
1.4. Disposal Remarks
DO NOT dispose this product with domestic waste!
Electrical devices should be disposed of in accordance with regional directives on electronic and/ or elec-
tronic-waste disposal. In case of further questions, please consult your supplier. In some cases, the supplier
can take care of proper disposal.
WARNING
HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION.
Sunsynk Three-Phase Hybrid Inverter can only be installed by a qualied licensed electrical contractor.
This is not a DIY product.

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2. PRODUCT INTRODUCTION
The Sunsynk Three-Phase Hybrid Inverter is a multifunctional inverter, combining functions of inverter, solar
charger and battery charger to oer uninterruptible power support with portable size. Its comprehensive
LCD display oers user congurable and easy accessible button operation such as battery charging, AC/so-
lar charging, and acceptable input voltage based on dierent applications. This is a multifunctional inverter,
combining functions of inverter, solar charger and battery charger to oer uninterruptible power support
with portable size. Its comprehensive LCD display oers user congurable and easy accessible button oper-
ation such as battery charging, AC/solar charging, and acceptable input voltage based on dierent applica-
tions.
2.1. System Overview
1. Inverter Indicators 7. Parallel Port 13. Grid
2. LCD Display 8. CAN Port 14. Function Port
3. Function Buttons 9. DRM Port 15. Load
4. Power on/o button 10. BMS Port 16. PV Input
5. DC switch 11. RS485 Port 17. Battery Input
6. Meter Port 12. Generator Input 18. WiFi Interface

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2.2. Product Size

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2.3. Features
INTERACTIVE
Easy and straightforward to understand LCD display;
Supporting Wi-Fi or GSM monitoring;
Visual power ow screen;
Built-in 2 strings for 1 MPP tracker and 1 string for 1 MPP tracker;
Smart settable 3-stage MPPT charging for optimised battery performance;
Auxiliary load function;
Multi-inverter function: grid-tied and o-grid;
COMPATIBLE
Compatible with mains electrical grid voltages or power generators;
Compatible with wind turbines;
230V/400V Three-phase Pure Sinewave Inverter;
It can power up both single-phase and 3-phase loads;
Self-consumption and feed-in to the grid;
Auto restart while AC is recovering;
Maximum charging/discharging current of 50A + 50A;
DC and AC coupled to retrot existing solar system;
Compatible with high-voltage batteries (600V);
CONFIGURABLE
Fully programmable controller;
Programmable supply priority for battery or grid;
Programmable multiple operation modes: on-grid/o-grid & UPS;
Congurable battery charging - current/voltage based on applications by LCD setting;
Congurable AC / solar / generator charger priority by LCD setting;
6 time periods for battery charging/discharging;
SECURE
Overload/over-temperature/short-circuit protection;
Smart battery charger design for optimised battery protection;
Limiting function installed to prevent excess power overow to the grid;
Isolation transformer design;
APPLICATIONS
Marine (vessel power management);
Power shedding (home/oce/factory);
UPS (fuel-saving systems);
Remote locations with solar and wind generators;
Building sites;
Telecommunication;

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2.4. Basic System Architecture
The following diagram explains the basic application and architecture of this 3-Phase Inverter.
It also includes the following devices to have a Complete running system.
Generator or Utility
PV modules
Batteries
Normal and smart loads
Monitoring system
Consult with your system integrator for other possible system architectures depending on your require-
ments.
This inverter can power all kinds of appliances in the home or one environment, including motor-type appli-
ances such as refrigerators and air conditioners.

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3. TECHNICAL SPECIFICATIONS
Model
SUN-25K-
SG01HP3-EU-
BM2
SUN-30K-
SG01HP3-EU-
BM3
SUN-40K-
SG01HP3-EU-
BM4
SUN-50K-
SG01HP3-EU-
BM4
Battery Input Date
Battery Type Li-Ion
Max. Charging Current 50A+50A
Max. Discharging Current 50A+50A
Number of battery input 2
Charging Strategy for Li-lon Battery Self-adaption to BMS
PV String Input Data
Max. DC Input Power 32500W 39000W 52000W 65000W
Max. DC Input Voltage 1000V
Start-up Voltage 180V
MPPT Range 150-850V
Full Load DC Voltage Range 450-850V 360-850V 360-850V 450-850V
Rated DC Input Voltage 600V
PV Input Current 36+36A 36+36+36A 36+36+36+36A
Max.PV Isc 55+55A 55+55+55A 55+55+55+55A
No. Of MPPT Trackers 2 3 4
No. Of Strings Per MPPT Tracker 2+2 2+2+2 2+2+2+2
AC Output Data
Rated AC Output and UPS Power 25000W 30000W 40000W 50000W
Max. AC Output Power 27500W 33000W 44000W 55000W
Peak Power(o grid) 1.5 time of rated power, 10 S
AC Output Rated Current 37.9/36.3A 45.5/43.5A 60.7/58.0A 75.8/72.5A
Max. AC Current 50A 60A 70A 83.3A
Max. Continuous AC Pass through 200A
Generator input/Smart load
/AC couple current
37.9/150
/37.9A
45.5/150
/45.5A
60.7/150
/60.7A
75.8/150
/75.8A
Power Factor 0.8 leading to 0.8 lagging
Output Frequency and Voltage 50/60Hz; 3L/N/PE 220/380, 230/400Vac
Grid Type Three Phase
DC injection current (mA) <0.5%1n
Eciency
Max. Eciency 97.60%
Euro Eciency 97.00%
MPPT Eciency >99%

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Model
SUN-25K-
SG01HP3-EU-
BM2
SUN-30K-
SG01HP3-EU-
BM3
SUN-40K-
SG01HP3-EU-
BM4
SUN-50K-
SG01HP3-EU-
BM4
Protection
PV Input Lightning Protection Integrated
Anti-islanding Protection Integrated
PV String Input Reverse Polarity
Protection Integrated
Insulation Resistor Detection Integrated
Residual Current Monitoring Unit Integrated
Output Over Current Protection Integrated
Output Shorted Protection Integrated
Output Over Voltage Protection DC Type II / AC Type III
Battery Over Current Protection Fuses
Certications and Standards
Grid Regulation VDE4105,IEC61727/62116,VDE0126,AS4777.2,CEI 0 21,EN50549-1,
G98,G99,C10-11,UNE217002,NBR16149/NBR16150
EMC/Safety Regulation IEC62109-1/-2, NBT32004-2018, EN61000-6-1,EN61000-6-2,
EN61000-6-3, EN61000-6-4
General Data
Operating Temperature Rande -40~60 ºC, >45 ºC Derating
Cooling Intelligent air cooling
Noise ≤45 dB
Communication with BMS RS485; CAN
Weight 80 Kg
Size 527W×894H×294D mm
Protection Degree IP65
Installation Style Wall-mounted
Warranty 5 years

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4. INSTALLATION
4.1. Parts List
Check the equipment before installation. Please make sure nothing is damaged in the package. You should
have received the items in the following package:
Hybrid Inverter
x1
Wall Mounting bracket
x1
Stainless steel anti-collision bolt
M12x60
x4
L-type Hexagon wrench
x1
Parallel communication cable
x2 Meter (optional)
x1
Battery Plug connectors
accessories x4
DC+/DC- Plug connec-
tors including metal
terminal xN
T-type wrench x1 Stainless steel mounting
screws M4*12 x2
Sensor Clamp x3Data Logger x1

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4.2. Selecting the Mounting Area
For proper heat dissipation, allow a clearance of approximately 500mm to the side, 500mm above and below
the unit, and 1000mm to the front of the unit.
DO NOT install the inverter in the following areas:
Areas with high salt content, such as the marine environment. It will deteriorate the metal parts and
possibly lead to water/dampness penetrating the unit.
Areas lled with mineral oil or containing splashed oil or steam, such as those found in kitchens. It will
deteriorate plastic parts of the unit, causing those parts to fail or allowing water/damp to penetrate the
unit.
Areas that generate substances that adversely aect the equipment, such as sulphuric gas, chlorine gas,
acid, or alkali. These can cause the copper pipes and brazed joints to corrode and fail to conduct elec-
tricity reliably.
Areas that can cause combustible gas to leak, which contains suspended carbon-bre or ammable
dust, or volatile inammable such as paint thinner or gasoline.
Areas where there may be gas leaks and where gas may settle around the unit as this is a re risk.
Areas where animals may urinate on the unit or ammonia may be generated.
High altitude areas (over 4000 metres above sea level).
Environments where precipitation or humidity is above 95%
Areas where the air circulation is too low.
ALSO CONSIDER:
Installing the indoor unit, outdoor unit, power supply cable, transmission cable, and remote control cable
at least 1 metre away from any television or radio receiver. This will prevent TV reception interference or
radio noise. This will prevent radio signal interference from external units that might interfere with the
Wi-Fi or GSM monitoring.

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4.3. Mounting the Inverter
Select installation locations that are adequate to support the weight of the converter.
Install this inverter at eye level to allow the LCD to be read anytime.
To ensure optimal operation, an appropriate ambient temperature is between -25 and 60°C.
Be sure to keep other objects and surfaces, as shown in the gure to guarantee sucient heat dissipa-
tion and have enough space to remove wires.
For proper air circulation to dissipate heat, allow a clearance of approximately 50cm to the side.
WARNING
Risk of injury (Heavy Object).
Remember that this inverter is heavy, so users must carefully handle the unit during installation,
especially when mounting or removing it from a wall.
Choose the recommended drill head (as shown below) to drill 4 holes on the wall, 62-70mm deep.
1. Use a proper hammer to t the expansion bolt into the holes.
2. Carry the inverter and hold it, ensure the hanger aims at the expansion bolt, and x the inverter on the
wall.
3. Fasten the screw head of the expansion bolt to nish the mounting.
If children under 10 years old may approach the unit, take preventive measures so they cannot reach
and touch the unit.
Install the indoor unit on the wall where the oor height is higher than 1600mm.
Before connecting all wires, please take the metal cover o, removing the screws as shown below:
62-70mm
[(2.44in) to (2,75in)]

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Inverter hanging plate installation

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4.4. Function Port Denition

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Please follow below steps to implement battery connection:
1. Pass the cable through the terminal:
CAUTION
Reverse Polarity.
Before making the nal DC connection or closing DC breaker/disconnect, be sure positive (+) must be
connected to the positive (+) and negative (-) must be connected to the negative (-). A reverse polarity
connection on the battery will damage the inverter.
CAUTION
All wiring/connecting must be performed by qualied personnel. In addition, connecting the battery
with a suitable cable is essential for safe and ecient operation of the system
4.5. Battery Connection
For safe operation and compliance, an individual DC overcurrent protector or disconnection device is
required to connect the battery and the inverter. Users are recommended to utilise a suitable fuse and DC
isolator (see next page). Switching devices may not be required in some applications, but overcurrent pro-
tectors must be used. Please refer to the typical amperage in the table below for the required fuse or circuit
breaker size.
Model Cross section (mm2)
Range Recommended value
25/30/40/50KW 16.0~25.0 (6~4AWG) 16.0(6AWG))
2. Put on the rubber ring:

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3. Crimp terminals:
4. Fasten terminal with a bolt:
5. Fasten the terminal with outer cover:
PLEASE NOTE
Depending on the battery type, the inverter should be capable of controlling the battery BMS. There-
fore, you need to set the protocol of the BMS on both the battery and the inverter.
When using more than one battery, the rst battery will be the master, and the other batteries will be
the slaves. Please, check the battery manufacturer's specications for proper operation.
To verify if the battery is communicating, access the Li BMS menu as detailed in section 5.13, 'Setting
Up a Lithium Battery', and check whether the values are realistic. It is important that the charge and
discharge limits on that page match the numbers expected for the number of connected batteries.