User Manual
SAJ Solar Inverter
Sununo Plus Series
www.saj-electric.com
Sununo Plus Series
-1-
Preface
Thank you for choosing a SAJ solar inverter. We are pleased to provide
you with first-class products and exceptional service.
This manual includes information for installation, operation, maintenance,
trouble shooting and safety. Please follow the instructions of this manual
so that we can ensure delivery of our professional guidance and
wholehearted service.
Customer-orientation is forever our commitment. We hope this document
proves to be of great assistance in your journey for a cleaner and greener
world.
Please check for the latest version at www.saj-electric.com
Guangzhou Sanjing Electric Co., Ltd.
Building e-Energy management solution provider
Sununo Plus Series
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Content
Preface..................................................................................................... - 1 -
Chapter 1 Safety Precautions................................................................- 4 -
1.1 Scope of Application..................................................................................- 4 -
1.2 Safety Instructions......................................................................................- 4 -
1.3 Target Group...............................................................................................- 5 -
Chapter 2 Preparation...........................................................................- 6 -
2.1 Safety Instructions......................................................................................- 6 -
2.2 Explanations of Symbols........................................................................... - 7 -
Chapter 3 Product Information.............................................................- 9 -
3.1 Application Scope of Products.................................................................. - 9 -
3.2 Specification for Product Model............................................................. - 10 -
3.3 Overview and Dimensions of products...................................................- 10 -
3.4 Datasheet.................................................................................................. - 11 -
Chapter 4 Instructions for installation................................................ - 17 -
4.1 Safety Instructions................................................................................... - 17 -
4.2 Pre-installation Check..............................................................................- 17 -
4.3 The Determination of the Installation Method and Position.................. - 18 -
4.4 Mounting Procedure.................................................................................- 19 -
Chapter 5 Electrical Connection.........................................................- 24 -
5.1 Safety Instruction for Hot-line Job..........................................................- 24 -
5.2 Specifications for Electrical Interface..................................................... - 25 -
5.3 AC Side Connection.................................................................................- 26 -
5.4 DC Side Connection................................................................................ - 27 -
5.5 Communication Connection....................................................................- 30 -
Chapter 6 Debugging Instructions......................................................- 31 -
6.1 Introduction of Human-computer Interface............................................ - 31 -
Sununo Plus Series
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6.2 First Run Setup.........................................................................................- 32 -
6.3 Monitoring Operation.............................................................................. - 40 -
Chapter 7 Fault Code and Troubleshooting........................................- 41 -
Chapter 8 Recycling and Disposal..................................................... - 44 -
Chapter 9 Guarantee Service..............................................................- 45 -
Chapter 10 Contact SAJ..................................................................... - 46 -
SAJ Warranty Policy.......................................................................... - 47 -
Warranty Card....................................................................................... - 51 -
Sununo Plus Series
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Chapter 1 Safety Precautions
1.1 Scope of Application
This User Manual describes instructions and detailed procedures for installing,
operating, maintaining, and troubleshooting of the following SAJ grid-tied
inverters:
Sununo Plus 1K, Sununo Plus 1.5K, Sununo Plus 2K, Sununo Plus 2.5K,
Sununo Plus 3K, Sununo Plus 3.6K, Sununo Plus 3K-M,
Sununo Plus 4K-M, Sununo Plus 5K-M, Sununo Plus 6K-M
Please keep this manual all time available in case of emergency.
1.2 Safety Instructions
DANGER
· DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
· WARNING indicates a hazardous situation which, if not avoided, can result in death or
serious injury or moderate injury.
CAUTION
· CAUTION indicates a hazardous condition which, if not avoided, can result in minor or
moderate injury.
NOTICE
· NOTICE indicates a situation that can result in potential damage, if not avoided.
Sununo Plus Series
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1.3 Target Group
Only qualified electricians who have read and fully understood all safety
regulations contained in this manual can install, maintain and repair the inverter.
Operators must be aware of the high-voltage device.
Sununo Plus Series
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Chapter 2 Preparation
2.1 Safety Instructions
DANGER
· There is possiblity of duing to electrical shock and high voltage.
· Do not touch the operating component of the inverter, or it might result in burning or death.
· To prevent risk of electric shock during installation and maintenance, please make sure that all AC
and DC terminals are plugged out.
· Do not touch the surface of the inverter while the housing is wet, or it might lead to electrical shock.
· Do not stay close to the inverter while there are severe weather conditions including storm, lighting,
etc.
· Before opening the housing, the SAJ inverter must be disconnected from the grid and PV generator;
you must wait for at least five minutes to let the energy storage capacitors fully be discharged after
disconnecting from power source.
WARNING
·The installation,service, recycling and disposal of the inverters must be performed by qualified
personnel only in compliance with national and local standards and regulations.
·Any unauthorized actions including modification of product functionality of any form may cause lethal
hazard to the operator, third parties, the units or their property. SAJ is not responsible for the loss and
these warranty claims.
·The SAJ inverter must only be operated with PV generator. Do not connect any other source of energy
to the SAJ inverter.
·Be sure that the PV generator and inverter are well grounded in order to protect
safety of people’s
life and property
.
CAUTION
· The PV inverter will become hot during operation. Please do not touch the heat sink or peripheral
surface during or shortly after operation.
·Risk of damage due to improper modifications.
NOTICE
·Public utility only.
·The PV inverter is designed to feed AC power directly to the public utility power grid; do not connect
AC output of the inverter to any private AC equipment.
Sununo Plus Series
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2.2 Explanations of Symbols
Symbol Description
Dangerous electrical voltage
This device is directly connected to public grid, thus all work to the inverter
shall only be carried out by qualified personnel.
DANGER to life due to high electrical voltage!
There might be residual currents in inverter because of large capacitors. Wait
for 5 MINUTES before you remove the front lid.
NOTICE, danger!
This is directly connected with electricity generators and public grid.
Danger of hot surface
The components inside the inverter will release a lot of heat during operation.
Do not touch metal plate housing during operating.
An error has occurred
Please go to Chapter 9 “Troubleshooting” to remedy the error.
This device SHALL NOT be disposed of as residential waste
Please go to Chapter 8 “Recycling and Disposal” for proper treatments.
Without Transformer
This inverter does not use transformer for the isolation function.
Security Certificate
The inverter complies with
European product safety instructions.
CE Mark
Equipment with the CE mark fulfills the basic requirements of the Guideline
Governing Low-Voltage and Electro-magnetic Compatibility.
SAA Mark
The inverter complies with the requirement of Equipment and Product Safety Act in
Australia.
Sununo Plus Series
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CQC Mark
The inverter complies with the safety instructions from China's Quality Center.
No unauthorized operations or modifications
Any unauthorized operations or modifications are strictly forbidden, if any
defect or damage(device/person) occurs, SAJ shall not take any responsibility
for it.
Sununo Plus Series
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Chapter 3 Product Information
3.1 Application Scope of Products
Sununo Plus series products are grid-tied single phase inverters without
transformers, and the inverters are important components of grid-tied solar power
systems.
The Sununo Plus inverters change the DC generated by solar panels into AC which
is in accordance with the requirements of public grid and send the AC into the grid,
Table 3.1 shows the structural diagram of the typical application system of Sununo
Plus inverters.
Name Description Remarks
A Solar panels
Monocrystalline or polycrystalline silicon, and thin-film PV
modules with II protection and need no ground connection
B Inverters
Sununo Plus 1K/1.5K/2K/2.5K/3K/3.6K/3K-M/4K-M/5K-M
/6K-M
C
Metering
equipment
Standard metering tool for measuring the output electric power
of inverters
DPowergridTT，TN-C，TN-S，TN-C-S
Table 3.1 Systematic Configuration Diagram
Sununo Plus Series
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3.2 Specification for Product Model
Sununo Plus XK -M
①②③
①
Sununo Plus represents for product name.
②
XK represents rated power XkW of inverter, for example 1.5K means 1.5kW.
③
-M represents the inverter has the function of dual MPPT.
3.3 Overview and Dimensions of products
The dimensions of Sununo Plus series products is shown in Figure 3.2.
AB
Sununo Plus 1K/1.5K Sununo Plus 2K/2.5K/3K/3.6K
C
Sununo Plus 3K-M/4K-M/5K-M/6K-M
Figure 3.2 Dimensions of Sununo Plus series Products
Sununo Plus Series
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3.4 Datasheet
Sununo Plus 1K/1.5K
Type Sununo Plus 1K Sununo Plus 1.5K
Input (DC)
Max. DC Power [W] 1200 1800
Max. DC Voltage [V] 450
MPPT Voltage range [V] 60-425
Nominal DC Voltage [V] 360
Start Voltage [V] 70
Min. DC Voltage [V] 50
Max. DC Input Current [A] 11
Number of DC Connection Sets
per MPPT
1
Number of MPPT 1
DC Switch Integrated
Output (AC)
Rated AC Power [W] 1000 1500
Max. AC Power [W] 1100 1650
Rated AC Current [A] 4.3 6.5
Max. AC Current [A] 5.3 7.9
Nominal AC voltage/ range 220V, 230V, 240V/180V-280V
Grid frequency/ range 50Hz, 60Hz/ ±5Hz
Power factor [cos φ] >0.99(full load)
Total Harmonic Distortion
[THDi]
<3%
Feed in 1L+N+PE
Efficiency
Max. Efficiency 97.1% 97.2%
Euro Efficiency [at 360Vdc] 96.6% 96.7%
MPPT Accuracy >99.5%
Protection
Internal Over-voltage Protection Integrated
DC Insulation Monitoring Integrated
DCI Monitoring Integrated
GFCI Monitoring Integrated
Grid Monitoring Integrated
AC Short Circuit Current
Protection
Integrated
Thermal Protection Integrated
Sununo Plus Series
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Anti-island protection
monitoring
AFD
Interface
AC Connection Plug-in connector
DC Connection MC4/H4
LCD/LED Display LCD (16x2 Characters, Backlight) & LED (3 Lights)
Display Language English
Datalogger & Communication RS232 (Standard)/WiFi (Optional)
General Data
Topology Transformerless
Consumption at Night [W] <0.2
Consumption at Standby [W] 6
Operating Temperature Range -25°C to +60°C (45°C to 60°C with derating)
Cooling Method Natural Covection
Ambient Humidity 0% to 100% Non-condensing
Altitude Up to 2000m (without derating)
Noise [dBA] <15
Ingress Protection IP65 (Indoor & Outdoor Installation)
Mounting Rear Panel
Dimensions (H*W*D) [mm] 315*260*120
Net Weight [kg] 5.6
Standard Warranty [Year] 5 (Standard)/10/15/20/25 (Optional)
Certificates
IEC62109-1/2, IEC61000-6-2/3, IEC61683, IEC60068-2,
IEC62116, IEC61727, PEA/MEA, NRS 097-2-1,
UTE-C-15-712-1, VDE0126-1-1/A1, VDE-AR-N 4105,
AS4777.2, AS4777.3, C-TICK, CQC NB/T 32004, G83-2,
NBR 16149, NBR 16150, TF 3.2.1, C10/11
Sununo Plus Series
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Sununo Plus 2K/2.5K/3K/3.6K
Type
Sununo Plus
2K
Sununo Plus
2.5K
Sununo Plus
3K
Sununo Plus
3.6K
Input (DC)
Max. DC Power [W] 2400 3000 3630 4420
Max. DC Voltage [V] 500 550 600
MPPT Voltage range [V] 60-450 60-500
Nominal DC Voltage [V] 360
Start Voltage [V] 70
Min. DC Voltage [V] 50
Max. DC Input Current [A] 11
Number of DC Connection Sets
per MPPT
1
Number of MPPT 1
DC Switch Integrated
Output (AC)
Rated AC Power [W] 2000 2500 3000 3680
Max. AC Power [W] 2200 2750 3300 3680
Rated AC Current [A] 8.7 10.9 13.0 16.0
Max. AC Current [A] 10.6 13.3 15.9 17.6
Nominal AC voltage/ range 220V, 230V, 240V/180V-280V
Grid frequency/ range 50Hz, 60Hz/ ±5Hz
Power factor [cos φ] >0.99(full load)
Total Harmonic Distortion
[THDi]
<3%
Feed in 1L+N+PE
Efficiency
Max. Efficiency 97.4% 97.5% 97.6% 97.6%
Euro Efficiency [at 360Vdc] 96.9% 97.0% 97.1% 97.1%
MPPT Accuracy >99.5%
Protection
Internal Over-voltage Protection Integrated
DC Insulation Monitoring Integrated
DCI Monitoring Integrated
GFCI Monitoring Integrated
Grid Monitoring Integrated
AC Short Circuit Current
Protection
Integrated
Thermal Protection Integrated
Sununo Plus Series
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Anti-island protection
monitoring
AFD
Interface
AC Connection Plug-in connector
DC Connection MC4/H4
LCD/LED Display LCD (16x2 Characters, Backlight) & LED (3 Lights)
Display Language English
Datalogger & Communication RS232 (Standard)/WiFi (Optional)
General Data
Topology Transformerless
Consumption at Night [W] <0.2
Consumption at Standby [W] 6
Operating Temperature Range -25°C to +60°C (45°C to 60°C with derating)
Cooling Method Natural Covection
Ambient Humidity 0% to 100% Non-condensing
Altitude Up to 2000m (without derating)
Noise [dBA] <25
Ingress Protection IP65 (Indoor & Outdoor Installation)
Mounting Rear Panel
Dimensions (H*W*D) [mm] 354*305*120
Net Weight [kg] 7.8 8.3 8.4
Standard Warranty [Year] 5 (Standard)/10/15/20/25 (Optional)
Certificates
IEC62109-1/2, IEC61000-6-2/3, IEC61683, IEC60068-2,
IEC62116, IEC61727, PEA/MEA, NRS 097-2-1,
UTE-C-15-712-1, VDE0126-1-1/A1, VDE-AR-N 4105,
AS4777.2, AS4777.3, C-TICK, CQC NB/T 32004, G83-2,
NBR 16149, NBR 16150, TF 3.2.1, C10/11
Sununo Plus Series
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Sununo Plus 3K-M/4K-M/5K-M/6K-M
Type
Sununo Plus
3K-M
Sununo Plus
4K-M
Sununo Plus
5K-M
Sununo Plus
6K-M
Input (DC)
Max. DC Power [W] 3630 4840 6050 7200
Max. DC Voltage [V] 600
MPPT Voltage range [V] 90-550
Nominal DC Voltage [V] 360
Start Voltage [V] 100
Min. DC Voltage [V] 80
Max. DC Input Current [A] 11/11
Number of DC Connection Sets
per MPPT
1/1
Number of MPPT 2
DC Switch Integrated
Output (AC)
Rated AC Power [W] 3000 3680
1
/4000 4600
2
/5000 6000
Max. AC Power [VA] 3300 3680/4400 4600/5500 6000
Rated AC Current [A] 13.0 16.0/17.4 20.0/21.7 26.1
Max. AC Current [A] 15.9 16.0/21.0 22.2/26.7 28.7
Nominal AC voltage/ range 220V, 230V, 240V/180V-280V
Grid frequency/ range
50Hz, 60Hz/
±
5Hz
Power factor [cosφ] 0.8 leading~0.8 lagging
Total Harmonic Distortion
[THDi]
<3%
Feed in 1L+N+PE
Efficiency
Max. Efficiency 97.6% 97.8% 97.9% 97.9%
Euro Efficiency [at 360Vdc] 97.1% 97.4% 97.5% 97.5%
MPPT Accuracy >99.5%
Protection
Internal Over-voltage Protection Integrated
DC Insulation Monitoring Integrated
DCI Monitoring Integrated
GFCI Monitoring Integrated
Grid Monitoring Integrated
Sununo Plus Series
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AC Short Circuit Current
Protection
Integrated
Thermal Protection Integrated
Anti-island protection
monitoring
AFD
Interface
AC Connection Plug-in connector
DC Connection MC4/H4
LCD/LED Display LCD (16x2 Characters, Backlight) & LED (3 Lights)
Display Language English
Datalogger & Communication RS232 (Standard)/WiFi (Optional)
General Data
Topology Transformerless
Consumption at Night [W] <0.2
Consumption at Standby [W] 6
Operating Temperature Range
-25
°
Cto+60
°
C(45
°
Cto60
°
C with derating)
Cooling Method Natural Covection
Ambient Humidity 0% to 98% Non-condensing
Altitude Up to 2000m (without derating)
Noise [dBA] <25
Ingress Protection IP65 (Indoor & Outdoor Installation)
Mounting Rear Panel
Dimensions (H*W*D) [mm] 454*355*150 454*355*162
Net Weight [kg] 14.8 15.8
Standard Warranty [Year]
5
（
Standard
）
/10/15/20/25
（
Optional
）
Certificates
IEC62109-1/2, IEC61000-6-2/3, IEC61683, IEC60068-2,
IEC62116, IEC61727, PEA/MEA, NRS 097-2-1,
UTE-C-15-712-1, VDE0126-1-1/A1, VDE-AR-N 4105,
AS4777.2, AS4777.3, C-TICK, CQC NB/T 32004, G83-2,
G59-3, NBR 16149, NBR 16150, TF 3.2.1, C10/11
Remark:
1. Meet the grid standard that AC current per phase not exceeding 16A.
2. Meet the VDE - ARN - N 4105 that biggest apparent power of single-phase is
4600 VA.
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Chapter 4 Instructions for installation
4.1 Safety Instructions
DANGER
· Dangerous to life due to potential fire or electricity shock.
· Do not install the inverter near any inflammable or explosive items.
· This inverter will be directly connected with HIGH VOLTAGE power generation device;
the installation must be performed by qualified personnel only in compliance with national
and local standards and regulations.
NOTICE
· This equipment is suitable for the pollution degree II.
· Inappropriate or unharmonized installation environment may jeopardize the life span of
the inverter.
· Installation directly exposed under intensive sunlight is not recommended.
· The installation site must be well ventilated.
4.2 Pre-installation Chec
k
4.2.1 Check the Package
Although SAJ ’ s inverters have surpassed stringent testing and are checked
before they leave the factory, it is uncertain that the inverters may suffer
damages during transportation. Please check the package for any obvious signs
of damage, and if such evidence is present, do not open the package and contact
your dealer as soon as possible
4.2.2 Check the Assembly Parts
Please refer to the Packing List inside the package container.
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4.3 The Determination of the Installation Method and Position
4.3.1 Mounting Method
Please mount the inverter correctly as shown in Figure 4.1 below.
Figure 4.1 Mounting Method
(1)The equipment employs natural convection cooling, and it can be installed
indoor or outdoor.
(2)Please install the equipment under the guidance of Figure4.1. Vertical
installation on floor level is recommended. Mount vertically or tilted backwards by
max. 15
°
. Never install the inverter tilted forwards, sideways, horizontally or
upside down.
(3) Install the inverter at eye level for convenience when checking the LCD display
and possible maintenance activities.
(4)When mounting the inverter, please consider that disassembly for service work
may be required.
4.3.2 Installation Position
Do not expose the inverter to direct solar irradiation as this could cause power
derating due to overheating.The ambient temperature should be between -25°C
～
+60°C
（
-13° F
～
140° F
）
to ensure optimum operation.Choose locations with
sufficient air exchange. Ensure additional ventilation, if necessary.
To make sure the installation spot is suitably ventilated, if multiple SAJ grid-tied
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solar inverters are installed same area, the following safety clearance in Figure
4.2 Shall be followed for proper ventilation conditions.
30CM
50CM50CM30CM
30CM
Figure 4.2 Minimum Clearance
4.4 Mounting Procedure
4.4.1 Mark the Positions of the Drill Holes of the Rear Panel
The mounting position should be marked as shown in Figure 4.3, Figure 4.4 &
Figure 4.5.
Figure 4.3 Dimensions of rear panel of Sununo Plus 1K/1.5K
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