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