SunSynk SUN-3.6K-SG01/03LP1-EU User guide

Hybrid Parity (Super) Inverter
INSTALLER MANUAL
3.6kW/5.5kW/8.8kW PLUS PARALLEL VERSION
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]m / www.globaltechhk.com

Index
1. SAFETY ................................................................................................................................................4
1.1. SYSTEM OVERVIEW ................................................................................................................................5
2. TECHNICAL SPECIFICATION ............................................................................................................7
2.1. SYSTEM DIAGRAM ..................................................................................................................................9
3. INSTALLATION..................................................................................................................................10
3.1. SELECTING THE MOUNTING AREA..........................................................................................................10
3.2. MOUNTING THE INVERTER.....................................................................................................................11
3.3. BATTERY CONNECTION ........................................................................................................................12
3.3.1 CONNECTING A LITHIUM BATTERY.............................................................................................................. 13
3.4. AC CONNECTION –SINGLE INVERTER OR MULTI INVERTER SYSTEM.....................................................14
3.5. INSTALLING THE CT COIL .....................................................................................................................16
3.5. CONNECTING THE PV ...........................................................................................................................18
4. OPERATION.......................................................................................................................................19
4.1. DISPLAY...............................................................................................................................................19
4.2. SWITCHING ON/OFF............................................................................................................................20
4.3. HOME PAGE .........................................................................................................................................20
4.4. STATUS PAGE ......................................................................................................................................21
4.5. SYSTEM FLOW PAGE............................................................................................................................22
4.6. SETUP PAGE ........................................................................................................................................23
4.7. SET TIME (CLOCK)...............................................................................................................................23
4.8. SET COMPANY NAME /BEEPER /AUTO DIM..........................................................................................24
4.9. FACTORY RESET AND LOCK CODE........................................................................................................25
4.10. BATTERY SETUP HOME PAGE.............................................................................................................25
4.11. GENERATOR AND BATTERY PAGE ......................................................................................................26
4.12. BATTERY DISCHARGE PAGE...............................................................................................................27
4.13. SETTING UP A LITHIUM BATTERY........................................................................................................28
4.14. PROGRAM CHARGE /DISCHARGE TIMES PAGE...................................................................................30
4.15. GRID SUPPLY VOLTAGE AND FREQUENCY -GRID SUPPLY PAGE ........................................................32
4.16. ADVANCED SETTINGS FOR PARALLELING INVERTERS.........................................................................33
4.17. SOLAR POWER GENERATED...............................................................................................................36
4.18. GRID POWER......................................................................................................................................36
4.19. ADVANCED SETTINGS FOR WIND TURBINE..........................................................................................37
4.20. ADVANCED SETTINGS FOR AUXILIARY LOAD ......................................................................................38
4.21. ADVANCED SETTINGS FOR PEAK POWER SHAVING ............................................................................40
4.22. FAULT CODES ....................................................................................................................................41

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1. SAFETY
Be sure to read this manual thoroughly before installation.
Do not attempt to install the inverter by yourself. Installation work must be performed following national
wiring standards by authorized personnel only. Do not turn on the power until all installation work is
complete.
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.
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 authorized contractor for repairs.
WARNING !!! HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION.
The Sunsynk Parity Hybrid Inverter can only be installed by a qualified licensed electrical
contractor. This is not a DIY product.

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1.1. System Overview
The Sunsynk Hybrid Parity 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, main electrical
grids, and generator, and then effectively storing and releasing electric power as the utilities require.
INTERACTIVE
Easy and simple to understand display
Supporting Wi-Fi or GSM monitoring
Visual power flow screen
Built-in 2 strings of MPP trackers
Smart settable 3-stage MPPT charging for optimized battery performance
Auxiliary load function
Parallel / multi invert function grid-tied and off-grid
COMPATIBLE
Compatible with main electrical grid voltages or power generators
Compatible with wind turbines
220V single phase, pure sinewave inverter
Self-consumption and feed-in to the grid
Auto restart while AC is recovering
Auto earth bond feature (Via a relay)
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
1. PV isolator
2. Power ON/OFF
3. Battery input connectors
4. I/O Ports
5. MPPT 1 and MPPT 2 inputs
6. Battery cable compression gland
7. Inverter LED indicators
8. LCD display
9. Function buttons
10. RS485 port
11. CAN bus port
12. Generator / Aux IN/OUT
13. On-grid inverter
14. Load off-grid inverter
15. Ground connection
16. Data logger

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SECURE
Overload/over-temperature/short-circuit protection
Smart battery charger design for optimized battery protection
Limiting function installed to prevent excess power overflow to grid
APPLICATIONS
Marine (vessel power management)
Power shedding (home/office/factory)
UPS (fuel-saving systems)
Remote locations with solar and wind generators
Building sites
Military locations
Telecommunication

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2. TECHNICAL SPECIFICATION
SUN-3.6K-SG01/03LP1-EU and SUN-5K-SG01/03LP1-EU
Model
SUN-3.6K-SG01/03LP1-EU
SUN-5K-SG01/03LP1-EU
Battery Input Data
Battery Type
Lead-acid or Lithium-ion
Battery Voltage Range (V)
40~60V
Max. Charging Current (A)
90A
120A
Max. Discharging Current (A)
90A
120A
Charging Curve
3 Stages/Equalisation
External Temperature Sensor
Optional
Charging Strategy for Li-Ion Battery
Self-Adaptation to BMS
PV String Input Data
Max. DC Input Power (W)
4680W
6500W
PV Input Voltage (V)
370V (100V~500V)
MPPT Range (V)
125~425V
Full Load DC Voltage Range (V)
240~425V
Start-up Voltage (V)
150V
PV Input Current (A)
11A+11A
No. of MPPT Trackers
2
No. of Strings Per MPPT Tracker
1+1
AC Output Data
Rated AC Output and UPS Power (W)
3600W
5000W
Max. AC Power (W)
3960W
5500W
Peak Power (off-grid)
2 times of rated power, 10 S
AC Output Rated Current (A)
15.7A
21.7A
Max AC Output Current (A)
18A
25A
Max Continuous AC Passthrough (A)
35A
Power Factor
0.8 leading to 0.8 lagging
Output Frequency and Voltage
50/60Hz; 220/230/240Vac (single phase)
Grid Type
Single Phase
Current Harmonic Distortion
THD<3%(Linear load<1.5%)
Efficiency
Max. Efficiency
97.60%
MPPT Efficiency
96.50%
Euro Efficiency
99.90%
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
Integrated
Certifications and Standards
Grid Regulation
VDE 0126, AS4777, NRS2017, G98, G99, IEC61683, IEC62116, IEC61727,
RD1699:2011, XP C15-712-3:2019-05
Safety Regulation
IEC62109-1, IEC62109-2
EMC
EN61000-6-1, EN61000-6-3
General Data
Operating Temperature Range (℃)
-25~60°C, >45°C Derating
Cooling
Fan
Noise (dB)
<30
Communication with BMS
RS485; CAN
Weight (kg)
20.5
Size (Length x Width x Height)
580 x 330 x 208 mm
Protection Degree
IP65
Installation Style
Wall-mounted
Warranty
5 years

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SUN-5K-SG01LP1-US, SUN-6K-SG01LP1-US, SUN-7.6K-SG01LP1-US/EU, SUN-8K-SG01LP1-US/EU
Model
SUN-5K-
SG01LP1-US
SUN-6K-
SG01LP1-US
SUN-7.6K-
SG01LP1-US/EU
SUN-8K-
SG01LP1-US/EU
Battery Input Data
Battery Type
Lead-acid or Lithium-ion
Battery Voltage Range (V)
40~60V
Max. Charging Current (A)
120A
135A
190A
190A
Max. Discharging Current (A)
120A
135A
190A
190A
Charging Curve
3 Stages/Equalisation
External Temperature Sensor
Optional
Charging Strategy for Li-Ion Battery
Self-Adaptation to BMS
PV String Input Data
Max. DC Input Power (W)
6500W
7800W
9880W
10400W
PV Input Voltage (V)
370V (100V~500V)
MPPT Range (V)
125~425V
Start-up Voltage (V)
150V
PV Input Current (A)
11A+11A
18A+9A
18A+18A
18A+18A
No. of MPPT Trackers
2
No. of Strings Per MPPT Tracker
1+1
2+1
2+2
2+2
AC Output Data
Rated AC Output and UPS Power
(W)
5000W
6000W
7600W
8000W
Max. AC Power (W)
5500W
6600W
8360W
8800W
Peak Power (off-grid)
2 times of rated power, 10 S
AC Output Rated Current (A)
20.8A
25A
31.7A/33A
33.4A/35A
Max AC Output Current (A)
24A
28.8A
36.4A/38A
38.3A/40A
Max Continuous AC Passthrough (A)
48A
80A
90A
90A
Output Frequency and Voltage
50/60Hz; 120/240Vac(split phase), 208Vac(2/3), 230Vac(single phase)
Grid Type
Split phase, 2/3 phase, Single phase
Current Harmonic Distortion
THD<3%(Linear load<1.5%)
Efficiency
Max. Efficiency
97.60%
MPPT Efficiency
96.50%
Euro Efficiency
99.90%
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
Residual Current Monitoring Unit
Integrated
Output Over Current Protection
Integrated
Output Shorted Protection
Integrated
Output Over Voltage Protection
Integrated
Certifications and Standards
Grid Regulation
UL1741, IEEE1547, RULE21, VDE0126, AS4777, NRS2017, G98,G99, IEC61683,
IEC62116, IEC61727
Safety Regulation
IEC62109-1, 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 (dB)
<30
Communication with BMS
RS485; CAN

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Weight (kg)
32
Size (Length x Width x Height)
670 x 420 x 233 mm
Protection Degree
IP65
Installation Style
Wall-mounted
Warranty
5 years
2.1. System Diagram

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3. INSTALLATION
3.1. Selecting the mounting area
DO NOT install the inverter in the following areas:
Areas with high salt content, such as the marine environment. It will deteriorate metal parts, causing
the parts to fail or the unit to leak water.
Areas filled with mineral oil or containing a large amount of splashed oil or steam, such as a kitchen.
It will deteriorate plastic parts, causing the parts to fail or the unit to leak water.
Areas that generates substances that adversely affect the equipment, such as sulfuric gas, chlorine
gas, acid, or alkali. It will cause the copper pipes and brazed joints to corrode, which can cause
refrigerant leakage.
Areas that can cause combustible gas to leak, which contains suspended carbon-fiber or flammable
dust, or volatile inflammable such as paint thinner or gasoline.
Areas where there may be gas leaks and settles around the unit. It can cause fires.
Areas where animals may urinate on the unit or ammonia may be generated.
High altitude areas above 2000 meters above sea level.
Environments where precipitation or humidity are above 95%
Areas where the air circulation is too low.
ALSO CONSIDER:
Install the indoor unit, outdoor unit, power supply cable, transmission cable, and remote control cable
at least 1m away from a television or radio receivers. This will prevent TV reception interference or

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radio noise. Even if they are installed more than 1m apart, it is still possible to receive noise under
some signal conditions.
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.
3.2. 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.

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3.3. Battery Connection
Battery connection of the 3.6kW/5.5kW model
Battery connection of the 8kW model
For safe operation and compliance, an individual DC overcurrent protector or disconnection device is
required for the connection of the battery and the inverter. It is recommended to utilize a suitable fuse
and DC isolator (see next page). In some applications, switching devices may not be required but
overcurrent protectors are still required.
A minimum battery cable size of 35mm diameter and 50mm diameter is recommended for the 5.5
kW and 8.8kW inverter, respectively.
Risk of injury when lifting and from falling inverter
Remember that this inverter is heavy (See section 2 “Technical Data”)! Please be careful when
removing the inverter from the packaging and mounting it onto the wall.

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Recommended DC Surge Protector:
3.3.1 Connecting a Lithium Battery
When connecting a Lithium battery, follow the connection steps bellow and then check section 4.13
“Setting Up a Lithium Battery” for setting it up in the inverter:
1. Connect a properly power cable following the battery manufacturer specification and recommend
safety devices.
2. Connect communication cable properly following the battery manufacturer specification.
3. Connect to the inverter correctly.
Before making the finalDC connection or closing the DC breaker/disconnection device, ensure
that the inverter is wired properly. Reverse polarity connection on the battery will damage the
inverter.

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3.4. AC Connection –Single Inverter or Multi Inverter System
Bottom view of the 3.6kW/5.5kW model
Bottom view of the 8kW model
All wiring and cable sizing must be following the country wiring regulations and code of
practices.
Ensure that suitable disconnection devices and RCDs are fitted.
NOTES
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.

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GEN/AUX
Connection for a generator
GRID
This works like a conventional grid-tied inverter. It is both an in and out
connection for non-essential load and supply
LOAD
Connection of essential loads such as lighting, security systems, and
internet
Recommended AC Surge Protector
Please ensure you use suitable protection devices. Switchgear and fuses must be following the local
wiring standards. A figure of the complete system is presented bellow.

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If an earth bond is required between neutral and earth and your system is a hybrid system then you can
have a permanent earth wire since this can cause faults with an RCD before the inverter.
Since the inverter is a true hybrid then the bond must only be made when the inverter is operating in
Islanding Mode. To accommodate this, Sunsynk provides an AC output, which is connected to the A/T/S
connections whenever the inverter is running on Island Mode. Therefore, you can simply connect the coil
of an AC relay to the ATS 240 connections. Next, you need to select Signal Island Mode on the battery
charge menu (click on the gear icon -> battery icon), as shown in the figure below.
You can test that there is a voltage when the inverter is disconnected from the grid by using a simple
multimeter.
3.5. Installing the CT Coil
The CT coil is one of the most important parts of the Sunsynk Parity inverter. This device reduces the
power of the inverter to prevent feeding power to the grid. This feature is also known as "Zero Export".
Fit the coil (sensor) around the live cable on the main fuse feeding the building and run the cable back
to the inverter. This cable can be extended up to an extra 10m using a similar cable.
Connect the other end of the CT coil into the inverter terminals marked as CT coil
NOTE
The grid may still be present, but the inverter is not draining power from it since the unit is working in
Island Mode.

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IMPORTANT !!!
If the CT coil is fitted in the wrong
way then this variable will have
negative instead of positive
values when the power is flowing
into the house/inverter. Also, the
inverter export limiting function
will not work properly.
IMPORTANT !!!
See below for information to determine if the CT coil is connected the correct way around:
1. First of all, ensure thatthe CT ismeasuring some power flowing into the house/inverter by switching
off the "Time Of Use" setting and disconnecting the PV panels.
2. Next, click on the "Battery Gauge", (5) to show the "System Status" screen below.
3. Ensure that the "CT" or "HM" power value is positive and in black color. If it shows a negative value
then either turn the CT coil 180° or swap the CT coil wires around where they connect to the
inverter.

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3.5. Connecting the PV
The inverter has two built-in MPPT controllers, MPPT 1 and MPPT 2, which can connect two arrays
of photovoltaic panels in parallel with a maximum current of 18 Amp (as shown below).
Before connecting to PV modules, install a separate DC circuit breaker between the inverter and PV
modules.
To avoid any malfunction, do not connect any PVmodules with possible current leakage tothe inverter.
For example, grounded PV modules will cause current leakage to the inverter. Open-circuit voltage
(Voc) of PV modules does not exceed max. PV array open-circuit voltage open-circuit voltage (Voc)
of PV modules should be higher than min. start voltage.

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4. OPERATION
4.1. Display
LED indicator
Meaning
DC
Green LED solid light
PV connection normal
AC
Green LED solid light
Grid connection normal
Normal
Green LED solid light
Inverter functioning normally
Alarm
Red LED solid light
Fault
Function Key
Description
Esc
To exit the previous mode
Up
Increase the value of a setting
Down
Decrease the value of a setting
Enter
Confirm setting change (If not pressed each time the setting will not be saved)

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4.2. Switching ON/OFF
Once the inverter has been properly installed and the batteries are connected, press the on/off button
(located on the left side of the case) to turn-on the system.
When the system is connected without a battery but connected with either PV or grid and the on/off button
is switched off, the LCD will still light up (display will show off). In this condition, when switching on the
on/off button and selecting no battery, the system can still work.
4.3. Home Page
Press Esc button any page to access the home page:
Daily readings Real time readings
What this page displays:
Total daily power into the battery (kWh).
Total daily power out of the battery (kWh).
SOC (State of charge of the battery) (%).
Total daily solar power produced in (kWh).
Total hourly usage of the generator (Time).
Total daily power sold to the grid (kWh).
Total daily power bought from the grid (kWh).
Real-time solar power in (kW).
Real-time load power in (kW).
1. Customer name
2. Access settings menu page
3. Access solar history
4. Access system status page
5. Access system status page
6. Access grid history
7. Access system flow page
Real-time battery charge power in (kW).
Real-time grid power in (kW).
Serial number.
Time date.
Fault condition.
Access stats pages.
Access status page.
Access fault diagnostic page.