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

THREE-PHASE
HYBRID INVERTER
SUN-25K-SG01HP3-EU-BM2/SUN-30K-SG01HP3-EU-BM3
SUN-40K-SG01HP3-EU-BM4/SUN-50K-SG01HP3-EU-BM4
INSTALLER MANUAL
v.1 (08/24/22)
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]

Hybrid Inverter | Installer Manual
PREFACE
This Installer Manual contains information needed 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 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 the operation and mainte-
nance of this product, please contact our customer support.
All personnel involved in the installation, setup, operation, maintenance, and repair of this ma-
chine should read and understand this manual, mainly its safety instructions. Substandard per-
formance 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 manu-
facturer’s warranty does not cover any damage resulting from the neglect of these instructions.
Sunsynk assumes no liability for damage caused by operation contrary to what is specified 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 together with the inverter as a reference to everyone who uses
this product.

Hybrid Inverter | Installer Manual
Table of Contents
1. SAFETY ........................................................................................................5
1.1. General Safety ............................................................................................................5
1.2. Symbols ......................................................................................................................5
1.3. Safety Instructions .....................................................................................................6
1.4. Disposal Remarks ......................................................................................................6
2. PRODUCT INTRODUCTION........................................................................7
2.1. System Overview........................................................................................................7
2.2. Product Size ...............................................................................................................8
2.3. Features ......................................................................................................................9
2.4. Basic System Architecture.......................................................................................10
3. TECHNICAL SPECIFICATIONS .................................................................11
4. INSTALLATION ...........................................................................................13
4.1. Parts List...................................................................................................................13
4.2. Selecting the Mounting Area ...................................................................................14
4.3. Mounting the Inverter...............................................................................................15
4.4. Battery Connection ..................................................................................................17
4.4.1. Function Ports Denition.....................................................................................19
4.5. Grid connection and backup load connection........................................................20
4.6. PV Connection..........................................................................................................21
4.6.1. PV Module Selection...........................................................................................22
4.6.2. PV Module Wiring ...............................................................................................22
4.7. Connecting the CT Coil...........................................................................................24
4.7.1. System Connection for the CHNT Meter ............................................................25
4.7.2. System Connection for the Eastron Meter..........................................................25
4.8. Earth Connection (MANDATORY) ............................................................................28
4.9. WIFI Connection.......................................................................................................28
4.10. Wiring System for Inverter .....................................................................................29
4.11. Wiring Diagram.......................................................................................................30
4.12. Typical Application Diagram of Diesel Generator .................................................32
4.13. Three Phase Parallel Connection Diagram ...........................................................33
5. OPERATION ...............................................................................................34
5.1. Display ......................................................................................................................34
5.2. Switching ON/OFF....................................................................................................35
5.3. Home Page ...............................................................................................................35
5.4. Status Page ..............................................................................................................36
5.5. System Flow Page....................................................................................................37
5.6. Setup Page ...............................................................................................................38
5.7. Set Time (Clock) .......................................................................................................38

Hybrid Inverter | Installer Manual
5.8. Set Company Name / Beeper / Auto dim................................................................39
5.9. Factory Reset and Lock Code ................................................................................40
5.10. Battery Setup Page ................................................................................................41
5.11. Generator & Battery Page......................................................................................42
5.12. Battery Discharge Page .........................................................................................45
5.13. Setting Up a Lithium Battery..................................................................................47
5.14. Program Charge & Discharge Times .....................................................................52
5.15. Grid Supply Page ...................................................................................................55
5.16. Advanced Settings for Paralleling Inverters..........................................................56
5.17. Solar Power Generated..........................................................................................59
5.18. Grid Power..............................................................................................................59
5.19. Advanced Settings for Wind Turbines ...................................................................60
5.20. Advanced Settings for Auxiliary Load ...................................................................61
5.21. Advanced Settings for Peak Shaving....................................................................62
5.22. Fault Codes ............................................................................................................63
5.23. Operation Modes....................................................................................................67
5.23.1. MODE I: Basic...................................................................................................67
5.23.2. MODE II: With Generator ..................................................................................67
5.23.3. MODE III: With Smart-Load ..............................................................................68
5.23.4. MODE IV: AC Couple ........................................................................................68
6. COMMISSIONING......................................................................................69
6.1. Start-Up / Shutdown Procedure .............................................................................69
6.2. Information for Commissioning the Inverter ...........................................................70
6.3. GDFI Fault.................................................................................................................71
7. MAINTENANCE..........................................................................................71
APPENDIX A ...................................................................................................71
APPENDIX B ...................................................................................................73

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1. SAFETY
This device should only be used in accordance o instructions within this manual and in
compliance with local, regional and national laws and regulations. Only allow this device
to be installed, operated, maintained, repaired by other persons who have also 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) suffering from a physical or mental
impairment that would affect 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
This symbol indicates information that if ignored, could result in per-
sonal injury or even death due to incorrect handling.
This symbol indicates information that if ignored, could result in per-
sonal injury or physical damage due to incorrect handling.
Indicates information that is considered important, but not haz-
ard-related.
1.2. Symbols

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1.3. Safety Instructions
Be sure to read this manual thoroughly before installation.
Do not attempt to install the inverter by yourself. Installation work must be carried out in
compliance with national wiring standards and by suitably qualified personnel only. Do not
turn on the power until all installation work is complete.
Do not disassemble the inverter. If you need repair or maintenance, contact a professional
service centre.
Always use an individual power supply line protected by a circuit breaker and operating on
all wires with a distance between contacts of at least 3mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a suitable
breaker and RCD to protect people.
Disconnect all wires/cables before performing any maintenance or cleaning to reduce the
risk of electrical shock.
The unit is not explosion-proof, so it should not be installed in an explosive atmosphere.¬
Never touch electrical components immediately after the power supply has been turned off
since the system can still have residual energy, so electric shock may occur. Therefore, after
turning off the power, always wait 5 minutes before touching electrical components.
This unit contains no user-serviceable parts. Always consult an authorised contractor for
repairs.
HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION.
The Sunsynk Single-Phase Hybrid Inverter can only be installed by a qualified li-
censed electrical contractor. This is not a DIY product.
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 electronic-waste disposal. In case of further questions, please consult your supplier. In
some cases, the supplier can take care of proper disposal.

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2. PRODUCT INTRODUCTION
The Sunsynk Three-Phase Hybrid Inverter is a highly efficient power management tool that al-
lows the user to hit those ‘parity’ targets by managing power-flow from multiple sources such
as solar, mains power (grid) and generators, and then effectively storing and releasing power
as and when utilities require.
2.1. System Overview

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1. Inverter Indicators 7. Meter-485 port 13. Grid
2. LCD Display 8. Battery input connectors 14. Load
3. Function Buttons 9. Function Port 15. Generator input
4. Power on/off button 10. Modbus Port 16. WiFi Interface
5. DC switch 11. BMS Port
6. Parallel port 12. PV input with two MPPT
2.2. Product Size

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2.3. Features
INTERACTIVE
Easy and simple to understand LCD display;
Supporting Wi-Fi or GSM monitoring;
Visual power flow 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 off-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 190A (8kW), 210A (10kW), and 240A (12kW);
DC and AC couple to retrofit existing solar system;
Compatible with a 48V low-voltage battery;
CONFIGURABLE
Fully programmable controller;
Programmable supply priority for battery or grid;
Programmable multiple operation modes: on-grid/off-grid & UPS;
Configurable battery charging - current/voltage based on applications by LCD setting;
Configurable 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 overflow to grid;
Isolation transformer design;
APPLICATIONS
Marine (vessel power management);
Power shedding (home/office/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 following devices to have a Complete running system.
Generator or Utlity
PV modules
Batteries
Normal and smart loads
Monitoring system
Consult with your system integrator for other possible system architectures depending on your
requirements.
This inverter can power all kinds of appliances in home or once environment, including motor
type appliances such as refrigerator and air conditioner.

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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
Battery Voltage Range 160V~800V
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(W) 32500 39000 52000 65000
Max. DC Input Voltage (V) 1000
Start-up Voltage(V) 180
MPPT Range(V) 150-850
Full Load DC Voltage Range (V) 450-850 360-850 360-850 450-850
Rated DC Input Voltage (V) 600
PV Input Current(A) 36+36 36+36+36 36+36+36+36
Max.PV Isc(A) 55+55 55+55+55 55+55+55+55
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(W) 25000 30000 40000 50000
Max. AC Output Power(W) 27500 33000 44000 55000
Peak Power(off grid) 1.5 time of rated power, 10 S
AC Output Rated Current(A) 37.9/36.3 45.5/43.5 60.7/58.0 75.8/72.5
Max. AC Current(A) 50 60 70 83.3
Max. Continuous AC Passthrough(A) 150
Generator input/Smart load
/AC couple current (A)
37.9/150
/37.9
45.5/150
/45.5
60.7/150
/60.7
75.8/150
/75.8
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
Efficiency
Max. Efficiency 97.60%
Euro Efficiency 97.00%
MPPT Efficiency >99%
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

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Output Shorted Protection Integrated
Output Over Voltage Protection DC Type II / AC Type III
Battery Over Current Protection Fuses
Certifications 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(ºC) -40~60 ºC, >45 ºC Derating
Cooling Intelligent air cooling
Noise(dB) ≤45 dB
Communication with BMS RS485; CAN
Weight(kg) 75
Size(mm) 527W×894H×294D
Protection Degree IP65
Installation Style Wall-mounted
Warranty 5 years

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4. INSTALLATION
4.1. Parts List
Check if you received all the items listed below. Ensure that nothing is damaged in the package.

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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 filled with mineral oil or containing splashed oil or steam such as found in kitchens. It
will deteriorate plastic parts of the unit, causing those parts to fail or allow water/damp to
penetrate the unit.
Areas that generate substances that adversely affect 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 electricity reliably.
Areas that can cause combustible gas to leak, which contains suspended carbon-fibre or
flammable dust, or volatile inflammable 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
fire 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 are above 95%
Areas where the air circulation is too low.

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4.3. Mounting the Inverter
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.
If children under 10 years old may approach the unit, take preventive measures so that they
cannot reach and touch the unit.
Install the indoor unit on the wall where the height from the floors is higher than 1600mm.
Before connecting all wires, please take the metal cover off removing the screws as shown
below:
Select installation locations that adequate to support the weight of the converter.
Install this inverter at eye-level to allow the LCD to be read anytime.
An appropriate ambient temperature is between -25 ~ 60°C to ensure optimal operation.
Be sure to keep other objects and surfaces as shown in the figure to guarantee sufficient
heat dissipation and have enough space to remove wires.
For proper air circulation to dissipate heat, allow a clearance of approximately 50cm to the
side.
Risk of injury (Heavy Object)
Remember that this inverter is heavy (75kg) so users must be careful in handling
the unit during installation especially when mounting or removing from a wall.

Page | 16Hybrid Inverter | Installer Manual
Choose the recommend drill head (as shown in below pic) to drill 4 holes on the wall, 52-60mm
deep.
1. Use a proper hammer to fit the expansion bolt into the holes.
2. Carry the inverter and holding it, make sure the hanger aim at the expansion bolt,fix the
inverter on the wall.
3. Fasten the screw head of the expansion bolt to finish the mounting.

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4.4. Battery Connection
For safe operation and compliance, an individual DC overcurrent protector or disconnection
device is required for the connection of the battery and the inverter. Users are recommended to
utilise a suitable fuse and DC isolator (see next page). In some applications, switching devices
may not be required, but overcurrent protectors must be used. Please refer to the typical am-
perage in the table below for the required fuse or circuit breaker size.
Please follow below steps to implement battery connection:
1. Pass the cable through the terminal:
Reverse Polarity
All wiring/connecting must be performed by qualified personnel. Before making
the final DC connection or closing the DC Breaker/disconnection device, ensure
the inverter unit is wired correctly. A reverse-polarity connection on the battery will
damage the inverter.
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:

Page | 18Hybrid Inverter | Installer Manual
4. Fasten terminal with a bolt:
5. Fasten the terminal with outer cover:
Depending on the battery type, the inverter should be capable of controlling the
batteries BMS. Therefore, you need to set the protocol of the BMS on both the bat-
tery and the inverter.
When using more than one battery, the first battery will be the master, and the other
batteries will be the slaves. Please, check the battery manufacturer specification
for proper operation.
To verify if the battery is actually communicating access the Li BMS menu as de-
tailed in section 4.13 ‘Setting Up a Lithium Battery’ and check whether the values
are realistic or not. It is important that the charge and discharge limits in that page
match the numbers expected for the number of batteries physically connected.
3. Crimp terminals:

Page | 19 Hybrid Inverter | Installer Manual
4.4.1. Function Ports Definition

Page | 20Hybrid Inverter | Installer Manual
4.5. Grid connection and backup load connection
Before connecting to grid, please install a separate AC breaker between inverter and grid.
Also, it is recommended that installs an AC breaker between backup load and inverter.This will
ensure the inverter can be securely disconnected during maintenance and fully protected from
over current. For the 25/30/40/50KW model, the recommended AC breaker for backup load is
180A. For the 25/30/40/50KW model, the recommended AC breaker for grid is 180A.
There are three terminal blocks with "Grid" "Load"and "GEN" markings. Please do not miscon-
nect input and output connectors.
All wiring must be performed by a qualified personnel.It is very important for sys-
tem safety and efficient operation to use appropriate cable for AC input connec-
tion. To reduce risk of injury, please use the proper recommended cable as below.
Cable type
Cross section (mm2)
Range Recommended value
Industry generic PV cable
(model: PV1-F) 70~95 (2/0~3/0AWG) 70(2/0AWG)
Backup Load Connection
Cable type
Cross section (mm2)
Range Recommended value
Industry generic PV cable
(model: PV1-F) 70~95 (2/0~3/0AWG) 70(2/0AWG)
Grid Connection
Please follow the steps below to implement GRID, LOAD, and GEN port connections:
1. Before making GRID, LOAD, and GEN port connections, make sure to turn off the AC
breaker or disconnector first.
2. Remove insulation sleeve 10mm length, insert the wires according to polarities indicated
on the terminal block. Make sure the connection is complete.Then, insert AC output wires
according to polarities indicated on the terminal block and tighten the terminal. Make sure
to connect corresponding N wires and PE wires to related terminals as well.
3. Then, insert AC output wires according to polarities indicated on the terminal block and
tighten terminal. Be sure to connect corresponding N wires and PE wires to related termi-
nals as well.
4. Make sure the wires are securely connected.