SAJ HS-5K-S2 User manual

HS2/AS2 Series
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GUANGZHOU SANJING ELECTRIC CO.,LTD
HS2/AS2 Series
SINGLE PHASE ALL-IN-ONE ENERGY STORAGE SYSTEM
USER MANUAL
HS2-3~6K-S2
AS2-3~6K-S
V0.0

HS2/AS2 Series
Preface
Thank you for choosing SAJ product. We are pleased to provide you 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 our forever commitment. We hope this document proves to be of great
assistance in your journey for a cleaner, greener world.
Please check for the latest version at www.saj-electric.com
Guangzhou Sanjing Electric Co., Ltd.

HS2/AS2 Series
1. SAFETY PRECAUTIONS ..........................................................................................................................1
1.1 Scope of Application........................................................................................................................................................ 2
1.2 Safety Instructions ............................................................................................................................................................ 2
1.3 Target Group.......................................................................................................................................................................2
2. PREPARATION .........................................................................................................................................3
2.1 Safety Instructions ............................................................................................................................................................ 4
2.2 Explanations Of Symbols................................................................................................................................................ 5
2.3 Battery Handling ............................................................................................................................................................... 6
2.4 Emergency Situation........................................................................................................................................................6
3. PRODUCT INFORMATION ......................................................................................................................9
3.1 Application Scope of Products...................................................................................................................................10
3.2 Specification for Product Model................................................................................................................................10
3.3 Overview of Productsl ...................................................................................................................................................10
3.4 Terminals Description ....................................................................................................................................................11
3.5 Datasheet ...........................................................................................................................................................................14
4. INSTRUCTIONS FOR INSTALLATION..................................................................................................17
4.1 Unpacking and Inspection ...........................................................................................................................................18
4.1.1 Checking the Package....................................................................................................................... 18
4.1.2 Scope of Delivery................................................................................................................................ 18
4.2 Installation and Position............................................................................................................................................... 20
4.2.1 Installation Position and Clearance ............................................................................................. 20
4.2.2 Mounting Method............................................................................................................................... 21
4.3 Mounting Procedure...................................................................................................................................................... 22
4.3.1 Installation Tools................................................................................................................................. 22
4.3.2 Mounting Procedure.......................................................................................................................... 23
5. ELECTRICAL CONNECTION .................................................................................................................33
5.1 Additional Grounding Cable....................................................................................................................................... 34
5.2 AC Grid Wire and Backup Output Connection.................................................................................................... 36
5.2.1 Earth Fault Alarm................................................................................................................................ 38
5.2.2 External AC Circuit Breaker and Residual Current Device.................................................. 38
5.2.3 Multiple Inverter Combinations..................................................................................................... 39
5.3 PV Side Connection........................................................................................................................................................ 40
5.4 Communication Connection....................................................................................................................................... 43
5.5 Connection Battery COMM Cable ............................................................................................................................ 46
5.6 Connecting Battery Power Cable ............................................................................................................................. 47
5.7 System Connection ...................................................................................................................................................... 48
5.8 System Connection Diagram...................................................................................................................................... 52
5.9 Installation of Side Covers of Battery Unit ........................................................................................................... 53
5.10 AFCI (Optional).............................................................................................................................................................. 54
6. COMMISSIONING...................................................................................................................................55
6.1 Start Up and Shut Down the Energy Storage System ..................................................................................... 56
6.1.1 Start Up .................................................................................................................................................. 56
6.1.2 Shut Down............................................................................................................................................. 56
6.2 Introduction of Human-computer Interface........................................................................................................ 57
6.3 Commissioning................................................................................................................................................................. 59
6.4 eSAJ APP Connection.................................................................................................................................................... 59
TABLE OF
CONTENTS

HS2/AS2 Series
6.4.1 Account Login.......................................................................................................................................59
6.4.2 Local Connection.................................................................................................................................61
6.4.3 Inverter Setting Review.....................................................................................................................63
6.5 Working Modes................................................................................................................................................................64
6.5.1 Selecting Working Modes Procedures........................................................................................64
6.5.2 Working Modes Instruction.............................................................................................................62
6.6 Export Limit Setting........................................................................................................................................................65
6.6.1 APP Setting............................................................................................................................................66
6.7 Self-test (For Italy)..........................................................................................................................................................66
6.8 Setting Reactive Power Control (For Australia)...................................................................................................68
6.8.1 Setup Fixed Power Factor Mode...................................................................................................68
6.8.2 Setup V-Watt and Volt-Var Mode................................................................................................70
7. MAINTENANCE ......................................................................................................................................73
7.1 Transportation..................................................................................................................................................................74
7.2 Storage................................................................................................................................................................................74
8. TROUBLESHOOTING and WARRANTY ..............................................................................................75

HS2/AS2 Series
1
2
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 products:
HS2-3K-S2; HS2-3.6K-S2; HS2-4K-S2; HS2-5K-S2; HS2-6K-S2;
AS2-3K-S; AS2-3.6K-S; AS2-4K-S; AS2-5K-S; AS2-6K-S;
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.
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 device. Operators must be aware of the high-voltage device.
1.

HS2/AS2 Series
3
4
PREPARATION
2.1 Safety Instructions
For safety, be sure to read all the safety instructions carefully prior to any works, and please observe the
appropriate rules and regulations of the country or region where you installed all-in-one energy storage
system.
DANGER
· There is possibility of dying due to electrical shock and high voltage.
· Do not touch the operating component of the inverter; 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 equipment while the housing is wet, otherwise, it might cause electrical shock.
· Do not stay close to the equipment 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 completely discharged after disconnecting from power
source.
·Please keep the power off prior to any operations
·Do not expose the battery to temperatures in excess of 50°C.
·Do not subject the battery to any strong force.
·Keep inflammable and explosive dangerous items or flames away from the battery.
·Do not soak the battery in water or expose it to moisture or liquids.
·Do not use the battery in areas where the ammonia content of the air exceeds 20ppm.
WARNING
·Only qualified personnel who has full knowledge of local safety regulations and local standards on battery can install, maintain,
retrieve and process this product.
·SAJ electric shall not be liable for any loss or warranty claims arising from any unauthorized change of product which may cause
fatal injury to the operator, third party or equipment performance.
·For personal and property safety, do not short-circuit the positive (+) and negative (-) electrode terminals.
CAUTION
·Risk of damage due to improper modification
·Use professional tools when operating the products.
· The inverter will become hot during operation. Please do not touch the heat sink or peripheral surface during or
shortly after operation.
NOTICE
2.

HS2/AS2 Series
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6
·During installation of the battery, circuit breaker must be disconnected from the battery pack wiring.
2.2 Explanations of Symbols
Symbol
Description
Dangerous electrical voltage
This device is directly connected to public grid, thus all work to the battery shall only be carried out
by qualified personnel.
No open flames
Do not place or install near flammable or explosive materials.
Danger of hot surface
The components inside the battery will release a lot of heat during operation. Do not touch metal
plate housing during operating.
Attention
Install the product out of reach of children
An error has occurred
Please go to Chapter 7 “Troubleshooting”to remedy the error.
This device shall NOT be disposed of in residential waste
This battery module shall NOT be disposed of in residential waste
CE Mark
Equipment with the CE mark fulfills the requirements of the Low Voltage Directive and Electro
Magnetic Compatibility.
Recyclable
2.3 Battery Handling
Operate and use the battery properly according to user manual, any attempt to modify battery without the permission from SAJ will void the
limit warranty for the battery.
•The battery must be installed at a suitable location with sufficient ventilation
•Do not use the battery if it is defective, damaged or broken.
•Only use the battery with compatible inverter.
•Do not use the battery with other type of battery.
•Make sure the battery is grounded prior to use.
•Do not pull out any cables or open the battery enclosure when the battery is powered on.
•Only use the battery as intended and designed.
2.4 Emergency Situation
Despite of its careful and professional protection design against any hazards, damage of the battery may still possible. If a small amount of
battery electrolyte is released due to a serious damage of the outer casing; or if the battery explodes due to not being treated timely after a fire
breaks out nearby, and leaks out poisonous gases such as carbon monoxide, carbon dioxide and etc., the following actions are recommended:
1）Eye contact: Rinse eyes with a large amount of running water and seek medical advice
2）Contact with skin: Wash the contacted area with soap thoroughly and seek medical advice
3）Inhalation: If you feel discomfort, dizziness or vomiting, seek medical advice immediately.
4）Use a FM-200 or Carbon Dioxide (CO2) fire extinguishers to extinguish the fire if there is a fire in the area where the battery pack is
installed. Wear a gas mask and avoid inhaling toxic gases and harmful substances produced by the fire.
5）Use an ABC fire extinguisher, if the fire is not caused by battery and not spread to it yet.

HS2/AS2 Series
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WARNING
·If a fire has just occurred, try to disconnect the battery circuit breaker and cut off the power supply first, but only if you
can do so without endangering yourself.
·If the battery is on fire, do not attempt to extinguish the fire but evacuate the crowd immediately.
Potential danger of damaged battery:
Chemical Hazard: Despite of its careful and professional protection design against any hazard results, rupture of battery may still occur
due to mechanical damage, internal pressure etc., and may result in a leakage of battery electrolyte. The electrolyte is corrosive and flammable.
When there is fire, the toxic gases produced will cause skin and eyes irritation, and discomfort after inhalation. Therefore:
1) Do not open damaged batteries;
2) Do not damage the battery again (shock, fall, trample, etc.);
3) Keep damaged batteries away from water (except to prevent an energy storage system from catching fire);
4) Do not expose the damaged battery to the sun to prevent internal heating of the battery.
Electrical hazard: The reason of fire and explosion accidents in lithium batteries is battery explosion. Here are the main factors of battery
explosion:
1) Short circuit of battery. Short circuit will generate high heat inside battery, resulting in partial electrolyte gasification, which will stretch
the battery shell. The temperature reaching ignition point of internal material will lead to explosive combustion.
2) Overcharge of battery. Overcharge of battery may precipitate lithium metal. If the shell is broken, it will come into direct contact with the
air, resulting in combustion. The electrolyte will be ignited at the same time, resulting in strong flame, rapid expansion of gas and explosion.

HS2/AS2 Series
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PRODUCT
INFORMATION
3.1 Application Scope of Products
The product is included a hybrid inverter/ AC-coupled inverter with battery and it is applied to residential photovoltaic energy storage system.
The energy storage system is able to store the energy for future use. It is built internally with a battery management system (BMS), which is used
to ensure efficiency of the battery and protect the battery from operating outside its specified limitations.
3.2 Specification for Product Model
HS2/AS2 –XK –S2/S
①②③
①HS2/AS2 represents for product name.
②XK represents rated energy XkW of storage system, for example, 5K means 5kW.
③S means single phase, S2 means single phase with 2MPPT.
3.3 Overview of Products
626
354
365
261
365
626
Figure 3.1
Dimensions of HS2/AS2 inverter and battery module
3.

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12
3.4 Terminals Description
Figure 3.2 HS2 Inverter unit interface (left view and right view)
Table 3.1 HS2 interface
Figure 3.3 AS2 unit interface (left view and right view)
Table 3.2 AS2 interface
Position
Name
1
B+/ B- port (to inverter)
2
Battery Switch
3
DC Switch
4
PV Input
5
Display
6
BAT+/BAT- port (for parallel connection)
7
Communication Port
8
Start button
9
BACKUP
10
Grid
11
Ground
12
Link Port 0 (to battery module)
13
4G/ Wi-Fi Module Port
14
Release Valve
Position
Name
1
B+/ B- port (to inverter)
2
Battery Switch
3
Display
4
BAT+/BAT- port (for parallel connection)
5
Communication Port
6
Start button
7
BACKUP
8
Grid
9
Ground
10
Link Port 0 (to battery module)
11
4G/ Wi-Fi Module Port
12
Release Valve
6
4
3
5
7
11
8910
2
1
12
8
6
4
3
2
1
5
7
9
13
10 11 12
14