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

V.8 (12/09/22)
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

HYBRID INVERTER | 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.

HYBRID INVERTER | Installer Manual3
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. Function Port Denition 17
4.5. Battery Connection 18
4.6. Grid Connection and Backup Load Connection 20
4.7. PV Connection 21
4.7.1. PV Module Selection 21
4.7.2. PV Module Wiring 22
4.8. Connecting the CT Coil 24
4.9. Meter Connection 25
4.9.1. System Connection for the CHNT Meter 25
4.9.2. System Connection for the CHNT Meter with CT Coil 26
4.10. Earth Connection (MANDATORY) 27
4.11. WIFI Connection 27
4.12. Wiring System for Inverter 28
4.13. Wiring Diagram 29
4.14. Typical Application Diagram of Diesel Generator 31
4.15. Three Phase Parallel Connection Diagram 32
5. OPERATION 33

HYBRID INVERTER | Installer Manual4
5.1. Display 33
5.2. Switching ON/OFF 33
5.3. Home Page 34
5.4. Status Page 34
5.5. System Flow Page 35
5.6. Setup Page 36
5.7. Set Time (Clock) 37
5.8. Set Company Name / Beeper / Auto dim 37
5.9. Factory Reset and Lock Code 38
5.10. Battery Setup Page 39
5.11. Generator & Battery Page 40
5.12. Battery Discharge Page 42
5.13. Setting Up a Lithium Battery 43
5.14. Program Charge & Discharge Times 45
5.15. Grid Supply Page 47
5.16. Advanced Settings for Paralleling Inverters 48
5.17. Solar Power Generated 51
5.18. Grid Power 51
5.19. Advanced Settings for Auxiliary Load 52
5.20. Advanced Settings for Peak Shaving 53
5.21. Fault Codes 54
5.22. Operation Modes 57
5.22.1. MODE I: Basic 57
5.22.2. MODE II: With Generator 57
5.22.3. MODE III: With Smart-Load 58
5.22.4. MODE IV: AC Couple 58
6. COMMISSIONING 59
6.1. Start-Up / Shutdown Procedure 59
6.2. Information for Commissioning the Inverter 59
6.3. GDFI Fault 60
7. MAINTENANCE 60
APPENDIX A 61
APPENDIX B 63

HYBRID INVERTER | Installer Manual5
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.

HYBRID INVERTER | Installer Manual6
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 qualied 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 cen-
tre.
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 electri-
cal 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 o since the
system can still have residual energy, so an electric shock may occur. Therefore, after turning o the
power, always wait 5 minutes before touching electrical components.
This unit contains no user-serviceable parts. Always consult an authorised contractor for repairs.
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.

HYBRID INVERTER | Installer Manual7
2. PRODUCT INTRODUCTION
The Sunsynk Three-Phase Hybrid Inverter is a highly ecient power management tool that allows the user to
hit those ‘parity’ targets by managing power-ow from multiple sources such as solar, mains power (grid) and
generators, and then eectively storing and releasing power as and when utilities require.
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

HYBRID INVERTER | Installer Manual8
2.2. Product Size

HYBRID INVERTER | Installer Manual9
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;

HYBRID INVERTER | Installer Manual10
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.

HYBRID INVERTER | Installer Manual11
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(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(o 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 Pass through(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
Eciency
Max. Eciency 97.60%
Euro Eciency 97.00%
MPPT Eciency >99%

HYBRID INVERTER | Installer Manual12
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(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

HYBRID INVERTER | Installer Manual13
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

HYBRID INVERTER | Installer Manual14
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.
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
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.

HYBRID INVERTER | Installer Manual15
Wi-Fi or GSM monitoring.
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:
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 (75kg), so users must carefully handle the unit during installa-
tion, especially when mounting or removing it from a wall.
Choose the recommended drill head(as shown below) to drill 4 holes on the wall, 52-60mm 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.

HYBRID INVERTER | Installer Manual16
Inverter hanging plate installation

HYBRID INVERTER | Installer Manual17
4.4. Function Port Denition

HYBRID INVERTER | Installer Manual18
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:

HYBRID INVERTER | Installer Manual19
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.

HYBRID INVERTER | Installer Manual20
4.6. Grid Connection and Backup Load Connection
Before connecting to the grid, please install a separate AC breaker between the inverter and the grid. Also,
it is recommended that installs an AC breaker between the backup load and inverter. This will ensure that
the inverter can be securely disconnected during maintenance and fully protected from overcurrent. For the
25/30/40/50KW model, the recommended AC breaker for the backup load is 180A. For the 25/30/40/50KW
model, the recommended AC breaker for the grid is 180A.
There are three terminal blocks marked as GRID, LOAD, and GEN. Please do not confuse input and output
connections. External AC SPD is compulsory on all Sunsynk inverters.
CAUTION
All wiring must be performed by qualied personnel. System safety and ecient operation need to
use appropriate cable for AC input connection. To reduce the risk of injury, please use the proper
recommended cables as below.
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 o the AC breaker or
disconnector rst.
2. Remove a 10mm sleeve from each wire, unscrew the bolts, insert the cables according to the polarities
indicated on the terminal block and tighten the terminal screws. Ensure the connection is complete.
Model Cross section (mm2)
Range Recommended value
25/30/40/50KW 70~95 (2/0~3/0AWG) 70(2/0AWG)
Backup Load Connection
Model Cross section (mm2)
Range Recommended value
25/30/40/50KW 70~95 (2/0~3/0AWG) 70(2/0AWG)
Grid Connection