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

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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 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

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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

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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
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.

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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

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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.