SunSynk SUN-8K-SG04LP3 User manual

v4 (04/27/21)
THREE
-
PHASE HYBRID
INVERTER
USER MANUAL
SUN-8K-SG04LP3 / SUN-10K-SG04LP3 / SUN-12K-SG04LP3
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]
www.globaltechhk.com
Version
7
.0 (0
7
/
27
/2021)

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 maintenance of this product, please contact our customer support.
All personnel involved in the installation, setup, operation, maintenance, and repair of
this machine 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 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.

INDEX
1. SAFETY 5
1.1. GENERAL SAFETY INFORMATION 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. DIMENSIONS 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 DEFINITION 18
4.4.2. TEMPERATURE SENSOR CONNECTION FOR LEAD-ACID BATTERY 19
4.5. CONNECTING THE AC AND BACKUP LOAD CONNECTION 20
4.6. CONNECTING THE CT COIL 23
4.7. EARTH CONNECTION (MANDATORY) 24
4.8. PV CONNECTION 25
4.8.1. PV MODULE SELECTION 25
4.8.2. PV MODULE WIRING 26
4.9. SYSTEM WIRING FOR INVERTER 28
4.10. WIRING DIAGRAM 29
5. OPERATION 30
5.1. DISPLAY 30
5.2. SWITCHING ON/OFF 31
5.3. HOME PAGE 31
5.4. STATUS PAGE 32
5.5. SYSTEM FLOW PAGE 33

5.6. SETUP PAGE 34
5.7. SET TIME (CLOCK) 35
5.8. SET COMPANY NAME / BEEPER / AUTO DIM 35
5.9. FACTORY RESET AND LOCK CODE 36
5.10. BATTERY SETUP PAGE 37
5.11. GENERATOR AND BATTERY PAGE 38
5.12. BATTERY DISCHARGE PAGE 40
5.13. SETTING UP A LITHIUM BATTERY 42
5.14. PROGRAM CHARGE / DISCHARGE TIMES 46
5.15. GRID SUPPLY VOLTAGE AND FREQUENCY – GRID SUPPLY PAGE 48
5.15.1. REACTIVE POWER SETTING (QV) 49
5.15.2. ACTIVE POWER SETTING (VW): 49
5.15.3. VOLT VARIABLE MODE (VOLT-VAR - VV) 50
5.16. ADVANCED SETTINGS FOR PARALLELING INVERTERS (UNDER DEVELOPMENT)
50
5.17. SOLAR POWER GENERATED 51
5.18. GRID POWER 51
5.19. ADVANCED SETTINGS FOR WIND TURBINE 52
5.20. ADVANCED SETTINGS FOR AUXILIARY LOAD 54
5.21. ADVANCED SETTINGS FOR PEAK POWER SHAVING 55
5.22. FAULT CODES 56
5.23. OPERATION MODES 59
6. COMISSIONING 62
6.1. STARTUP / SHUTDOWN PROCEDURE 62
6.2. INFORMATION FOR COMMISSIONING THE INVERTER 63
6.3. GDFI FAULT 64
7. MAINTENANCE 64
APPENDIX A 64
APPENDIX B 65
APPENDIX C 65
APPENDIX D 65
APPENDIX E 66

Page | 5
1. SAFETY
1.1. General Safety Information
 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.
1.2. Symbols
This symbol indicates information that if ignored, could result in
personal injury or even death due to incorrect handling.
This symbol indicates information that if ignored, could result in
personal injury or physical damage due to incorrect handling.
Indicates information that is considered important, but not hazard-
related.
WARNING
CAUTION
NOTICE
SAFETY

Page | 6
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.
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.
HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION.
The Sunsynk Three-Phase Hybrid Inverter can only be installed by a qualified
licensed electrical contractor. This is not a DIY product.
WARNING

Page | 7
2. PRODUCT INTRODUCTION
The Sunsynk Three-Phase Hybrid Inverter is a highly efficient power management tool
that allows 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
1
2
3
4
5
8
9
12
13
14
15
16
7
6
10
11
GRID LOAD GEN
PRODUCT INTRODUCTION

Page | 8
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: Wi-Fi Interface
5: DC Switch 11: BMS Port
6: Parallel Port 12: PV Input with Two MPPT
2.2. Dimensions

Page | 9
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;
 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;

Page | 10
APPLICATIONS
 Marine (vessel power management);
 Power shedding (home/office/factory);
 UPS (fuel-saving systems);
 Remote locations with solar and wind generators;
 Building sites;
 Telecommunication;
2.4. Basic System Architecture
The following diagram explains the basic application and architecture of this 3-Phase
Inverter. The system is composed of solar panels, batteries, a generator or utility grid,
normal loads, smart loads and monitoring systems.
GridBackup Load
WiFI
GPRS
phoneCloud services
On-Grid Home Load
Generator
ATS
Grid-connected InverterSmart Load
Battery
Solar
CT
AC cable DC cable

Page | 11
3. TECHNICAL SPECIFICATIONS
Model SUN-8K-SG01LP3 SUN-10K-SG01LP3 SUN-12K-SG01LP3
Battery Input Data
Battery Type Lead-acid or Lithium-ion
Battery Voltage Range 40~60V
Max. Charging Current 190A 210A 240A
Max. Discharging Current 190A 210A 240A
Charging Curve 3 Stages/Equalization
External Temperature
Sensor Optional
Charging Strategy for Li-Ion
Battery Self-adaption to BMS
PV String Input Data
Max. DC Input Power 9880W 13000W 15000W
PV Input Voltage 450V (140V~1000V)
MPPT Range 140V~800V
Start-up Voltage 160V
PV Input Current 12.5A+12.5A 25A+12.5A 25A+12.5A
No. of MPPT Trackers 2
No. of Strings Per MPPT
Tracker 1+1 2+1 2+1
AC Output Data
Rated AC Output and UPS
Power
8000W 10000W 12000W
Max. AC Power 8800W 11000W 13200W
Peak Power (off-grid) 2 times of rated power, 10 S
AC Output Rated Current 11.6A 14.5A 17.4A
Max AC Output Current 12.8A 16A 19.1A
Max Continuous AC
Passthrough
60A 60A 60A
Output Frequency and
Voltage
50-60Hz; 230/400Vac (Three Phase)
Grid Type Three Phase
Current Harmonic Distortion THD<3% (Linear load<1.5%)
Efficiency
Max. Efficiency 97.6%
MPPT Efficiency 97.0%
Euro Efficiency 99.9%
Protection
PV Arc Fault Detection Integrated (Except European Type)
PV Input Lightning
Protection
Integrated
Anti-islanding Protection Integrated
PV String Input Reverse
Polarity Protection
Integrated
Insulation Resistor
Detection
Integrated
TECHNICAL SPECIFICATIONS

Page | 12
Residual Current Monitoring
Unit
Integrated
Output Over Current
Protection
Integrated
Output Shorted Protection Integrated
Output Over Voltage
Protection
Integrated
Surge Protection DC Type II / AC Type II
Certifications and Standards
Grid Regulation UL1741, IEEE1547, RULE21, VDE0126, AS4777, NRS2017,
G98,G99, IEC61683, IEC62116, IEC61727
Safety Regulation IEC2109-1, IEC62109-2
EMC EN61000-6-1, EN61000-6-3, FCC 15 Class B
General Data
Operating Temperature
Range
-25~60°C, >45°C Derating
Cooling Fan
Noise <30dB
Communication with BMS RS485; CAN
Weight 45kg
Size (Length x Width x
Height)
673 x 462 x 265mm
Protection Degree IP65
Installation Style Wall-mounted
Warranty 5 years

Page | 13
4. INSTALLATION
4.1. Parts List
Check if you received all the items listed below. Ensure that nothing is damaged in the
package.
INSTALLATION

Page | 14
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).

Page | 15
 Environments where precipitation or humidity are 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.
 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:
4.3. Mounting the Inverter
 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.

Page | 16
Risk of injury (Heavy Object)
Remember that this inverter is heavy (45kg) so users must be careful in
handling the unit during installation especially when mounting or removing
from a wall.
CAUTION

Page | 17
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 amperage in the table below for the required
fuse or circuit breaker size.
Model Wire Size Area (mm
2
) Torque Value (max)
8kW 1 AWG 40 24.5 N.m
10kW 1/0 AWG 60 24.5 N.m
12kW 1/0 AWG 60 24.5 N.m
Please follow these instructions for battery connection:
1) Please choose a suitable battery cable (appropriate rating) with the correct
connector to attach to the battery terminals.
2) Use a suitable screwdriver that matches the bolt size to unscrew the bolts to fit
the battery connectors. Then tighten the bolts with the connectors in place with
a torque of 24.5N.m in a clockwise direction.
3) Make sure polarity is correct at both the battery and inverter terminals.
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.
CAUTION

Page | 18
4.4.1. Function Ports Definition

Page | 19
4.4.2. Temperature Sensor Connection for Lead-Acid Battery
Without a remote temperature sensor, lead-acid batteries may undercharge or overcharge
depending on the ambient temperature of the installation environment. This may result in a fire
hazard.

Page | 20
4.5. Connecting the AC and Backup Load Connection
Before connecting to the main grid, please install a separate AC Breaker (MCB)
between the inverter and the grid. In addition, it is recommended the installation of an
AC Breaker between backup load and inverter. This will ensure the inverter can be
disconnected safely during maintenance and fully protect the system from over-
current. The recommended AC Breaker is 20A for 8kW, 32A for 10kW and 32A for
12kW.
There are three terminal blocks marked as GRID, LOAD, and GEN. Please do not
confuse input and output connections.
GEN/AUX Generator connection.
GRID This works like a conventional grid-tied inverter. It is both an input
and output connection for non-essential load and supply
LOAD Connection of essential loads such as lighting, security systems,
and Internet
In order to reduce risk of injury, please user the proper recommended cable as below:
Model Wire Size Cable (mm2) Torque (max)
8/10/12kW 5 AWG 16 1.2 N.m
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
battery 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
detailed 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.
NOTICE