SAJ Suntrio Plus Series User manual

Suntrio Plus Series
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User Manual
SAJ Solar Inverter
Suntrio Plus Series
www.saj-electric.com

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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

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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............................................................- 8 -
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......................................- 13 -
4.1 Safety Instructions...................................................................- 13 -
4.2 Pre-installation Check..............................................................- 13 -
4.3 The Determination of the Installation Method and Position.......- 14 -
4.4 Mounting Procedure ................................................................- 16 -
Chapter 5 Electrical Connection..............................................- 18 -
5.1 Safety Instruction for Hot-line Job............................................- 18 -
5.2 Specifications for Electrical Interface........................................- 19 -
5.3 AC Side Connection.................................................................- 19 -
5.4 DC Side Connection................................................................- 21 -
5.5 ExternalAC Circuit Breaker and Residual Current Device........- 24 -
5.6 Communication Connection.....................................................- 24 -
Chapter 6 Debugging Instructions...........................................- 26 -

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6.1 Introduction of Human-Computer Interface ..............................- 26 -
6.2 First Run Setup........................................................................- 27 -
6.3 Monitoring Operation...............................................................- 41 -
Chapter 7 Fault Code and Troubleshooting............................- 42 -
Chapter 8 Recycling and Disposal..........................................- 45 -
Chapter 9 Guarantee Service .................................................- 46 -
Chapter 10 Contact SAJ..........................................................- 47 -
SAJ Warranty Policy................................................................- 48 -
Warranty Card............................................................................- 52 -

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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:
Suntrio Plus 4K; Suntrio Plus 5K; Suntrio Plus 6K;
Suntrio Plus 8K; Suntrio Plus 10K.
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.

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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.

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Chapter 2 Preparation
2.1 Safety Instructions
DANGER
·Dangerous due 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 andmaintenance, 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 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.

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·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.

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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.
CE Mark
Equipment with the CE mark fulfills the basic requirements of the
Guideline Governing Low-Voltage and Electro-magnetic Compatibility.
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.

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Chapter 3 Product Information
3.1 Application Scope of Products
Suntrio Plus series product is grid-tied single phase inverter without
transformer, and the inverter is the important component of grid-tied solar
power system.
The Suntrio Plus inverter converts the DC power generated by solar panels
into AC power which is in accordance with the requirements of public grid,
and send the AC power into grid, Table 3.1 shows the structural diagram of
the typical application system of Suntrio Plus inverter.
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
Suntrio Plus 4K/ 5K/ 6K/ 8K/ 10K
C
Metering
equipment
Standard metering tool for measuring the output electric
power of inverters
D
Power grid
TT，TN-C，TN-S，TN-C-S
Table 3.1 Systematic configuration diagram

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3.2 Specification for Product Model
Suntrio Plus XK
①②
①Suntrio Plus represents for product name.
②XK represents rated power of inverter, for example 5K means 5kW.
3.3 Overview and Dimensions of products
The dimensions of Sununo Plus series products is shown in Figure 3.2.
Figure 3.2 Dimensions of Suntrio Plus 4K/ 5K/ 6K/ 8K/ 10K

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3.4 Datasheet
Suntrio Plus 4K/5K/6K/8K/10K
Type
Suntrio
Plus 4K
Suntrio
Plus 5K
Suntrio
Plus 6K
Suntrio
Plus 8K
Suntrio
Plus 10K
Input (DC)
Recommended accessed DC
power1[W]
4840
6050
7260
9680
12000
Max. DC Voltage [V]
1000
MPPT Voltage Range [V]
160-900
Nominal DC Voltage [V]
600
Start Voltage[V]
180
Min. DC Voltage[V]
150
Max. DC Input Current PV1 /
PV2 [A]
11/11
22/11
Max. Short Circuit Current
PV1/PV2 [A]
13.2/13.2
26.4/13.2
Number of MPPT
2
Number of DC Connection
Sets per MPPT
1/1
2/1
DC Switch
Integrated
Output (AC)
Rated AC Power [W]
(@230V,50Hz)
4000
5000
6000
8000
10000
Max. AC Power [VA]
4000
5000
6000
8000
10000
Rated AC Current[A]
5.8
7.2
8.7
11.6
14.5
Max. AC Current [A]
6.4
8.1
9.7
12.9
15.9
Current (Inrush) [A]
50, 1s
Max. Output Fault Current
[A]
21
21
21
32.2
32.2
Max. output Overcurrent
Protection [A]
16
16
16
25
25
Nominal AC voltage/ range
3/N/PE, 220/380V,230/400V,240/415V;180V-280V/312V-485V
Grid frequency/ range
50Hz,60Hz /44Hz-55Hz,54-65Hz
Power factor,adjustable
0.9 leading~0.9 lagging
Total Harmonic Distortion
(THDi)
< 3% (at nominal power)
Feed-in Phase / Connection
Phase
3 L+N+PE

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Efficiency
Max. Efficiency
97.8%
97.8%
97.8%
98.0%
98.0%
Euro Efficiency (at 600Vdc)
97.0%
97.2%
97.4%
97.5%
97.6%
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
Anti-island protection
monitoring
AFD
Interface
DC Connection
MC4/H4
AC Connection
Plug-in connector
LCD Display
3.5 inch Graphic LCD Display, Backlight, Inverter Parameter and
Data Display
Display Language
English
Communication port
1*RS485/1*RS232
Communication
WiFi/GPRS/Ethernet(Optional)
General Data
Topology
Transformerless
Consumption at Night [W]
<0.6
Consumption at Standby [W]
<10
Operating Temperature Range
-25°C to +60°C(45°C to 60°C with derating)
Cooling Method
Natural Convection
Ambient Humidity
0% to 100% Non-condensing
Altitude
Up to 2000m (without power derating)
Noise [dBA]
<29
Ingress Protection
IP65 (Indoor & Outdoor Installation)
Mounting
Rear Panel
Dimensions (H*W*D) [mm]
530*355*190
530*355*200
Net Weight [kg]
20.5
23.0
Standard Warranty [Year]
5 (standard) 7/ 10/ 15/ 20/ 25 (Optional)
Certificates
IEC/EN62109-1/2, IEC61683, IEC60068-2, IEC62116, IEC61727,

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EN61000-6-2/3,C10/11,VDE0126-1-1/A1, VDE-AR-N 4105, CQC
NB/T 32004, G98,EN50438,CEI-021
Note: 1.1000W/M225℃
2.The above parameters might be slightly modified accoridng to different grid codes.
3.If you need more information about our product certifications, please contact our sales.
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 the unharmonized installation environment may jeopardize the life
span of the inverter.
·Installation directly exposed under intensive sunlight is not recommended.
·The installation site must have good ventilation condition.
4.2 Pre-installation Check
4.2.1 Check the Package
Although SAJ’s inverters have surpassed stringent testing and are checked
before leaving factory, it is still possible 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.

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4.2.2 Check the Assembly Parts
Please refer to the Packing List inside the package container.
4.3 The Determination of the Installation Method and
Position
4.3.1 Mounting Method
Please mount the inverter correctly as shown in Figure4.1 below.
Figure 4.1 Mounting method
①The equipment employs natural convection cooling, and it can be installed
indoor or outdoor.
②Please install the equipment under the guidance of Figure 4.1. Vertical
installation on floor level is recommended. Mount vertically or tilted
backwards by max. 15°. Never install the inverter tilted forward, sideways,
horizontally or upside down.
③Install the inverter at eye level for convenience when checking the LCD
display and possible maintenance activities.
④When mounting the inverter, please consider that disassembly for service
work may be required.

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4.3.2 Installation Position
Do not expose the inverter to directsolar irradiation asthis 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 locationswith sufficient air
exchange. Ensure additional ventilation, if necessary.
To make sure the installation spot is suitably ventilated, if multiple SAJ grid-tied solar
inverters are installed in the same area, the following safety clearance in Figure4.2
shall be followed for appropriate ventilation conditions.
30CM
50CM50CM30CM
30CM
50cm
80cm30cm
50cm
50cm
50cm
30cm80cm 80cm
80cm 80cm
30cm 30cm
50cm
50cm
50cm
50cm
50cm
50cm
Figure 4.2 Minimum clearance

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4.4 Mounting Procedure
4.4.1 Mark the Positions of the Drill Holes of the Rear Panel
The position of the drill holes can be determined by using rear panel. See
Figure 4.3 below:
Figure 4.3 Dimensions of rear panel
4.4.2 Drill Holes and Place the Expansion Tubes
Follow the given guides, drill 3 holes in the wall (in conformity with position
marked in Figure 4.4), and then place expansion tubes in the holes using a
rubber mallet.
Figure 4.4 Drill holes

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4.4.3 Mount the Screws and the Rear Panel
The panels should be mounted in the mounting position by screws as shown
in Figure 4.5.
Figure 4.5 Mount the rear panel
4.4.4 Mount the Inverter
Carefully mount the inverter to the rear panel. Make sure that the rear part of
the equipment is closely mounted to the rear panel.
Figure 4.6 Mount the inverter

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Chapter 5 Electrical Connection
5.1 Safety Instruction for Hot-line Job
Electrical connection must only be operated by professional technicians.
Please keep in mind that the inverter is a bi-power supply equipment.
Before connection, necessary protective equipment must be employed by
technicians, including insulating gloves, insulating shoes and safety helmet.
DANGER
·Dangerous to life due to potential fire or electricity shock.
·When power-on, the equipment should be in conformity with national rules and
regulations.
·The direct connection between the converter and high voltage power systems
must be operated by qualified technicians in accordance with local and national
power grid standards and regulations.
WARNING
·When the photovoltaic array is exposed to light, it supplies a d.c voltage to the
inverter.
NOTICE
·Electrical connection should be in conformity with proper stipulations, such as
stipulations for cross-sectional area of conductors, fuse and ground protection.
·The overvoltage category on DC input port is II,and that on AC output port is III.

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5.2 Specifications for Electrical Interface
ABCE
D
Figure 5.1 Electrical interface
Code
Name
A
DC Input
B
DC Switch
C
RS232/Wi-Fi Port
D
RS485 Port
E
AC Quick-connect Terminal
Table 5.1 Specifications for interface
5.3 AC Side Connection
Cross-sectional Area of Cables（mm²）
Outside Diameter of the
Cables（mm）
Scope
Recommended Value
4.0-6.0
6.0
4.2~5.3
Table 5.2 Recommended specifications of AC cables