SAJ Suntrio Plus Series User manual

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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 -
Content......................................................................................... - 2 -
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 of products ............................................................... - 10 -
3.4 Datasheet ................................................................................ - 12 -
Chapter 4 Instructions for installation ...................................... - 16 -
4.1 Safety Instructions ................................................................... - 16 -
4.2 Pre-installation Check .............................................................. - 16 -
4.3 The Determination of the Installation Method and Position....... - 17 -
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................................................................. - 27 -
5.4 DC Side Connection ................................................................ - 30 -
5.5 Communication Connection..................................................... - 32 -

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Chapter 6 Debugging Instructions ........................................... - 34 -
6.1 Introduction of Human-Computer Interface .............................. - 34 -
6.2 First Run Setup........................................................................ - 35 -
6.3 Monitoring Operation ............................................................... - 49 -
Chapter 7 Fault Code and Troubleshooting............................. - 50 -
Chapter 8 Recycling and Disposal .......................................... - 53 -
Chapter 9 Guarantee Service .................................................. - 54 -
Chapter 10 Contact SAJ .......................................................... - 55 -
SAJ Warranty Policy ................................................................ - 56 -
Warranty Card............................................................................ - 61 -

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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 12K; Suntrio Plus 15K; Suntrio Plus 17K; Suntrio Plus
20K; Suntrio Plus 25K; Suntrio Plus 30K; Suntrio Plus 33K; Suntrio
Plus 40K; Suntrio Plus 50K; Suntrio Plus 60K
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 instal
lation 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 wea
ther 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.

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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 refer 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 products are grid-tied three phase inverters without
transformers, and the inverters are important components of grid-tied solar
power systems.
The Suntrio 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 Suntrio Plus inverters.
Figure 3.1 Overview of photovoltaic system
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
12K/15K/17K/20K/25K/30K/33K/40K/50K/60K
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 XkW of inverter, for example, 12K means
12kW.
3.3 Overview of products
Figure 3.2 Overview of Suntrio Plus 12K/15K/17K/20K
Figure 3.3 Overview of Suntrio Plus 25K/30K/33K

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Figure 3.4 Overview of Suntrio Plus 40K/50K/60K

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3.4 Datasheet
Suntrio Plus 12K/15K/17K/20K/25K
Type
Suntrio
Plus 12K
Suntrio
Plus 15K
Suntrio
Plus 17K
Suntrio
Plus 20K
Suntrio
Plus 25K
Input (DC)
Max. PV ArrayPower [Wp]@STC
118000 22500 25500 26000 37500
Max. DC Voltage [V]
1000
MPPT Voltage Range [V]
180-900
Nominal DC Voltage [V] 600
Start Voltage[V] 200
Min. DC Voltage[V] 180
Max. DC Input Current PV1 / PV2
[A]
22/11 22/22 22/22 22/22 22/22/22
Number of MPPT
2
3
Number of DC Connection Sets per
MPPT
2/1 2/2 2/2 2/2 2/2/2
DC Switch
Integrated
Output (AC)
Rated AC Power [W]
(@230V,50Hz) 12000 15000 17000 20000 250002/2500
0
Max. AC Power [VA] 13200 16500 18700 22000 25000/2750
0
Rated AC Current[A] 17.4 21.7 25.8 29.0 37.9
Max. AC Current [A] 20.0 25.0 28.3 33.0 42.0
Nominal AC voltage/ range
3/N/PE, 220/380V,230/400V,240/415V;180V-280V/312V-485V
Grid frequency/ range
50Hz,60Hz /44Hz-55Hz,54Hz-65Hz
Power factor,adjustable
0.8 leading~0.8lagging
Total Harmonic Distortion (THDi)
< 3% (at nominal power)
Feed-in Grid
3L+N+PE
Efficiency
Max. Efficiency 98.3% 98.4% 98.5% 98.5% 98.6%
Euro Efficiency (at 600Vdc) 98.0% 98.1% 98.2% 98.2% 98.4%
MPPT Accuracy
>99.5%
Protection
Internal Over-voltage Protection
Integrated
DC Insulation Monitoring
Integrated
DCI Monitoring
Integrated
GFCI Monitoring
Integrated

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Grid Monitoring
Integrated
AC Short Circuit Current Protection
Integrated
Thermal Protection
Integrated
AC Surge Protection Ⅲ(Integrated)，Ⅱ(Optional) Ⅱ
(Integrated)
Low Voltage Ride Through
Integrated
String Current Monitoring
Integrated
Anti-PID Module
Optional
DC Fuse
Optional
DC Surge Protection Ⅱ（Optional）Ⅱ
(Integrated)
Anti-island protection monitoring
AFD
Interface
DC Connection
MC4/H4
AC Connection
Terminal Block
LCD Display
3.5 inch Graphic LCD Display
Display Language
English
Communication Port
2*RS485+1*RS232
Communication Mode
Wi-Fi/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
Intelligent Fan
Ambient Humidity
0 to 100% Non-condensing
Altitude
3000m (>2000m power derating)
Noise [dBA]
<35
Ingress Protection
IP65 (Indoor & Outdoor Installation)
Mounting
Rear Panel
Dimensions (H*W*D) [mm] 640*450*250 705*530*260
Net Weight [kg] 29 33 48
Standard Warranty [Year]
5 (standard)/10/15/20/25 (Optional)
Certificates
IEC/EN62109-1/2, EN61000-6-2/3, IEC61683, IEC60068-2,
IEC62116, IEC61727, VDE0126-1-1/A1, VDE-AR-N 4105, CQC
NB/T 32004, G99,NBR 16149,
NBR16150,C10/11,EN50438,G59/3

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Suntrio Plus 30K/33K/40K/50K/60K
Type
Suntrio
Plus 30K
Suntrio
Plus 33K
Suntrio
Plus 40K
Suntrio
Plus 50K
Suntrio
Plus 60K
Input (DC)
Max. PV ArrayPower [Wp]@STC
140000 40000 60000 65000 78000
Max. DC Voltage [V]
1000
MPPT Voltage Range [V]
180-900
280-900
Nominal DC Voltage [V] 600
Start Voltage[V] 200 300
Min. DC Voltage[V] 180 250
Max. DC Input Current PV1 / PV2
[A]
22/22/22 44/33/33 44/44/44
Number of MPPT
3
Number of DC Connection Sets per
MPPT
2/2/2 4/3/3 4/4/4
DC Switch
Integrated
Output (AC)
Rated AC Power [W]
(@230V,50Hz)
30000 30000 40000 50000 60000
Max. AC Power [VA] 30000 33000 44000 55000 60000
Rated AC Current[A] 43.5 45.5 58.0 72.5 87.0
Max. AC Current [A] 50.0 50.0 65.0 80.0 90.0
Nominal AC voltage/ range
3/N/PE, 220/380V,230/400V,240/415V;180V-280V/312V-485V
Grid frequency/ range
50Hz,60Hz /44Hz-55Hz,54Hz-65Hz
Power factor,adjustable
0.8 leading~0.8lagging
Total Harmonic Distortion (THDi)
< 3% (at nominal power)
Feed-in Grid
3L+N+PE
Efficiency
Max. Efficiency
98.8%
98.8%
98.8%
98.8%
98.9%
Euro Efficiency (at 600Vdc) 98.5% 98.5% 98.5% 98.5% 98.6%
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
AC Surge Protection
Ⅱ
(Integrated)

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Low Voltage Ride Through
Integrated
String Current Monitoring
Integrated
Anti-PID Module
Optional
DC Fuse
Optional
DC Surge Protection Ⅱ(Integrated)
Anti-island protection monitoring
AFD
Interface
DC Connection
MC4/H4
AC Connection
Terminal Block
LCD Display
3.5 inch Graphic LCD Display
Display Language
English
Communication Port
2*RS485+1*RS232
Communication Mode
Wi-Fi/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
Intelligent Fan
Ambient Humidity
0 to 100% Non-condensing
Altitude
3000m (>2000m power derating)
Noise [dBA]
<35
Ingress Protection
IP65 (Indoor & Outdoor Installation)
Mounting
Rear Panel
Dimensions (H*W*D) [mm]
705*530*260
800*550*280
Net Weight [kg] 48 68
Standard Warranty [Year]
5 (standard)/10/15/20/25 (Optional)
Certificates
IEC/EN62109-1/2, EN61000-6-2/3, IEC61683, IEC60068-2,
IEC62116, IEC61727, VDE0126-1-1/A1, VDE-AR-N 4105, CQC
NB/T 32004, G99,NBR 16149, NBR 16150,C10/11,EN50438,
RD1669,UNE206006,UNE206007,G59/3
Note:
1.1000W/m225℃
2.Applicable to Belgian grid standard.
3.The above parameters might be slightly modified according to different grid
codes.
4.If you need more information about our product certifications, please contact our
sales.

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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 unharm
onized 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.
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 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 Figure4.1. 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.
③Considering convenience for maintenance, please install the equipment
at a position in parallel with line of sight.
④When mounting the inverter, please consider the solidity of wall for
inverter, including accessories. Please ensure the Rear Panel mount tightly.
Before installation, make sure that the wall has enough strength to hold the
screws and bear the weight of the equipment.Please make sure the
equipment is installed properly.
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,

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if necessary.
To make sure the installation spot is suitably ventilated, if multiple SAJ
on-grid solar inverters are installed together, the following safety clearance
in Figure 4.2 shall be followed for proper ventilation conditions.
30CM
30CM
30CM
50CM 50CM
50CM
80CM
30CM 30CM
50CM
50CM 50CM
50CM
50CM
50CM
50CM 50CM 50CM
80CM 80CM 80CM
80CM 80CM
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 mounting positions should be marked as shown in Figure 4.3, Figure 4.4
and Figure 4.5.
508.5
348
120
400
457
Figure 4.3 Dimensions of rear panel Suntrio Plus 12K/15K/17K/20K