wattsonic 25K-100A-3P User manual

Wattsonic Li-HV Commercial Three Phase Hybrid
Nov 2023
User Manual
25/30/36/40/50K-100A-3P | Li-HV 65/130/195/260/325kWh

LIFE’S INNOVATION

Contents
1
2
3
4
1.1 Overview
1.2 Safety instructions and warning
1.2.1 Explanation of symbols
1.2.2 Safety instructions
1.2.3 Statement
Product Installation
Overview
Product and System
Introduction Electrical connection
4.1 External ground connection
4.2 Connection between BMS and inverter
4.2.1 Single cabinet
4.2.2 Multiple cabinets
4.3 Electrical wiring diagram
4.4 AC connection
4.4.1 AC side requirements
4.4.2 Installing the AC connector
4.4.3 Removal the AC connector
4.5 Monitoring device installation
4.6 Meter and CT connection
4.7 Communication connection
4.7.1 Assembling the multi-COM connector
4.7.2 Connect the meter and
BMS communication cables
2.1 System introduction
2.2 Operation modes
2.2.1 Running modes introduction
2.2.2 Back-up and off-grid output
2.3 Product introduction
2.3.1 Inverter
2.3.2 Battery module
2.3.3 Master & Sub-Master BMS
2.3.4 Cabinet frame
2.4 Delivery and storage
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3.1 Installation tool
3.2 Packing list
3.3 Supported installation environment
3.3.1 Installation location of inverter
3.3.2 Installation location of cabinet
3.4 Commercial cabinet installation
3.4.1 Installation preparation
3.4.2 Single cabinet installation
3.4.3 Multi-cabinet installation
3.5 Inverter installation
3.5.1 Installation preparation
3.5.2 Mounting the inverter
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5
Commissioning and
Maintenance
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9
Inverter Operation
Troubleshooting
Appendix
6.1 Main window
6.2 General setting
6.3 Advanced setting
6.4 Country code (safety code) setting
6.5 Auto-test
6.6 Reactive power
6.6.1 “Off” modes
6.6.2 “PF” mode
6.6.3 “Qt” mode
6.6.4 “Q(P)” mode
6.6.5 “Q(U)” mode
8.1 Error message
8.2 Inverter maintenance
8.3 Battery maintenance
9.1 Technical parameters
9.2 Contact information
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5.1 System start and stop
5.1.1 Start up procedures
5.1.2 Shut down procedures
5.1.3 Emergency stop function
5.2 Inverter commissioning
5.2.1 App preparation
5.2.2 Inspection
5.2.3 Commissioning precedures
5.3 BMS commissioning
5.4 Maintenance
Monitoring
7.1 Monitoring device
7.2 Cloud monitoring app
7.3 Local conguration app
4.7.3 Connect other cables
4.7.4 Installing the COM connector
4.7.5 Meter and BMS communication
4.7.6 EMS communication
4.7.7 DRED
4.7.8 Multifunction relay
4.7.9 Parallel system
4.8 PV string connection
4.8.1 PV side requirements
4.8.2 Assembling the PV connector
4.8.3 Installing the PV connector
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Warning: Before installing or using the Wattsonic Commercial Cabinet, read this document. Failure to do so or to
follow any of the instructions or warnings in this document can result in electrical shock, serious injury, death, or
damage to the Wattsonic product, potentially rendering it in operable.
Errors or omissions
To communicate any inaccuracies or omissions in this manual, please send an email to: [e-mail]
ELECTRONIC DEVICE: DO NOT THROW AWAY
Proper disposal of batteries is required. Refer to your local codes for disposal requirements.
(ie. EC N 1013/2006 among European Union).
©2023 Wuxi Wattsonic Energy Technology Co., Ltd.
All rights reserved.
All information in this document is subject to copyright and other intellectual property rights of Wuxi Wattsonic
Energy Technology Co., Ltd. and its licensors. This material may not be modied, reproduced or copied, in whole or in
part, without the prior written permission of Wuxi Wattsonic Energy Technology Co., Ltd. and its licensors. Additional
information is available upon request. The following are trademarks or registered trademarks of Wuxi.
All other trademarks in this document are the property of their respective owners, and their use herein does not imply
sponsorship or endorsement of their products or services. The unauthorized use of any trademark displayed in this
document or on the product is strictly prohibited.
Wattsonic Energy Technology Co., Ltd. in Jermany, South Africa,
Australia, UK and other countries:
Overview
1.1 Overview
Before installing and using this product, please read this manual carefully, understand the safety information, and be
familiar with the functions and characteristics of this device. The manual content of subsequent versions may be subject
to change. You can nd the newest manual at www.wattsonic.com.
Copyright
Thank you for selecting the Wattsonic Li-HV Commercial Three Phase Hybrid Series. Of course, you have made a great
decision and will be pleased with this product's features, benets, and quality.
These instructions will help you to familiarise yourself with the Wattsonic Li-HV Commercial Three Phase Hybrid Series,
and you will experience a smooth and efcient journey, and make sure to get the maximum benet from this powerful
device by reading the instructions.

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1.2 Safety instructions and warning
1.2.1 Explanation of symbols
This manual uses the following symbols to highlight important information:
DANGER
WARNING
CAUTION
ATTENTION
NOTE
Danger signs warn of urgent, dangerous situations. If not avoided, it could result in death
or serious personal injury.
Warning indicates a hazardous situation that, if not avoided, could result in injury or death.
Caution indicates a hazardous situation that, if not avoided, could damage the equipment.
Attention transmits safety warning information about equipment or the environment,
data loss, or other unpredictable results. It does not relate to physical injury.
The note indicates a vital step or tip that leads to the best results but is not safety or
damage-related.
Wattsonic Commercial Cabinet, installation and repair instructions assume knowledge of high voltage electricity and
should only be performed by Wattsonic Certied Installers. Wattsonic assumes no liability for injury or property damage
due to repairs attempted by unqualied individuals or a failure to follow these instructions properly. These warnings and
cautions must be followed when using Wattsonic Commercial Cabinet.
PLEASE SAVE THESE ESSENTIAL SAFETY GUIDELINES.
Symbols on the packing box Symbols on the hybrid inverter
Handle
with care
This side up Keep dry Stacked layers Power
indicator Grid status
indicator
Inverter status
indicator Battery SOC indicator Grounding symbol: The inverter casing
needs to be properly
grounded
Symbols on the inverter nameplate
To avoid the potential effects on the environment and human health as a result of the presence of hazardous
substances in electrical and electronic equipment, end-users of electrical and electronic equipment should
understand the meaning of the crossed-out wheeled bin symbol. Do not dispose of WEEE as unsorted
municipal waste and have to collect such WEEE separately.
Please read the instructions carefully before installation.
Do not touch any internal parts of the inverter until 5 min after being disconnected from the mains and PV input.
CE mark, the inverter complies with the requirements of the applicable CE guidelines.
TÜV certication.
Danger. Risk of electric shock!
The surface is hot during operation and no touch is allowed.
Electric shock hazard: Using a person to disassemble the inverter casing is strictly forbidden.

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1.2.2 Safety instructions
Caution: Please ensure no ammable materials are near the cabinet or module when installing the
Wattsonic Commercial Cabinet, and keep a re extinguisher in an accessible place.
Do not pile things on modules or cabinets.
Avoid installing in locations where there is a risk of ooding.
The product should be installed and kept level.
The installation position should be stable enough to support a certain amount of weight and vibration.
The appropriate battery storage and operation temperature is 25±5℃.
Caution: The humidity range of battery operation and storage is 40 to 80%.
Please adjust the cabinet room to a proper temperature for better battery performance and life span.
Please adjust the cabinet room to a proper humidity; otherwise, it may cause battery failure or re.
Do not install the cabinet if the temperature is beyond the -20-60℃range or the humidity is above 80%.
Do not install product with damaged or uninsulated tools.
Please ensure the earth ground wire connection is stable to prevent possible electric shock.
The installation must be carried out only by Wattsonic Certied Installers, who have been trained in dealing
with high voltage electricity.
The battery may be in danger of high voltage or short circuit. Please follow the instructions when conducting
installation and other operations:
Remove rings, watches, or other metal and conducting electricity objects;
Wear insulated gloves before operation;
Use tools with insulating isolation;
Do not put tools or metal parts on top of the modules and cabinets;
Do not use cleaning solvents to clean the product, or expose the product to ammable or harsh chemicals
or vapors;
Do not use uids, parts, or accessories other than those specied in this manual, including the use of non-
genuine Wattsonic parts or accessories or parts or accessories not purchased directly from Wattsonic or a
Wattsonic-certied party.

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Warning: Read this entire document before installing or using Wattsonic Commercial Cabinet. Failure to
do so or to follow any of the instructions or warnings in this document can result in electrical shock, serious
injury, or death, or can damage the product, potentially rendering it inoperable.
Do not short the positive and negative terminals of Module or Sub-Master BMS.
Do not modify, short circuit, or disassemble the modules.
Do not attempt to open, disassemble, repair, tamper with, or modify Wattsonic battery module. Wattsonic
battery module is not user serviceable. LFP Cells in Wattsonic Battery are not replaceable. Contact the
Wattsonic Authorized Reseller who sold the battery for any repairs.
Please do not throw the battery or shock it.
Do not modify the cables, including power cables, communication cables, etc.
Prohibit battery wiring in any other way than specied in the manual.
Incorrect wiring connections may cause product damage and danger.
Do not touch any metal terminals and mental objects linked with the mental terminals of the module.
Do not use or install the product if it is defective, appears cracked, broken, or otherwise damaged, or fails to
operate.
There is a high possibility of electric shock or severe burns due to the high voltage.
This product has potential danger such as death or serious injury by re, high voltages or explosion if the
precautions are not read or fully understood.
The local and national electrical safety standards must do electrical installations.
Rubber gloves and protective clothing (goggles and boots) should be worn when working on high voltage/
high current systems such as battery systems.
The danger of electric shock. Do not remove the cover. There are no internal parts that users can service.
Contact a qualied authorized technician for service.
Note: 1) Before installation, please read this manual carefully and follow the instructions in this manual
strictly.
2) Installers must undergo professional training or obtain electrical related professional qualication
certicates.
3) When installing, do not open the front cover of the inverter. Apart from performing work at the wiring
terminal (as instructed in this manual), touching or changing components without authorization may cause
injury to people, damage to inverters, and annulment of the warranty.
4) All electrical installations must conform to local electrical safety standards.
5) If the inverter needs maintenance, please get in touch with the local designated personnel for installation
and maintenance.
6) To use this inverter for power generation needs the permission of the local power supply authority.
7) The temperature of some parts of the inverter may exceed 60° C during operation. To avoid being burnt,
do not touch the inverter during the process. Let it cool before touching it.
8) When exposed to sunlight, the PV array generates dangerous high DC voltage. Please operate according
to our instructions, or it will endanger your life.
9) When wiring the lithium battery terminals, please disconnect the breaker or switch of the lithium battery
in case of a physical injury caused by the high voltage.

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Wuxi Wattsonic Energy Technology Ltd. has the right not to undertake quality assurance in any of the following
circumstances:
1) Damages caused by improper transportation.
2) Damages caused by incorrect storage, installation or use.
3) Damages caused by installation and use of equipment by non-professionals or untrained personnel.
4) Damages caused by failure to comply with this document's instructions and safety warnings.
5) Damages of running in an environment that does not meet the requirements stated in
this document.
6) Damages caused by operation beyond the parameters specied in applicable technical specications.
7) Damages caused by unauthorized disassembly, alteration of products, or modication of software codes.
8) Damages caused by abnormal natural environment (force majeure, such as lightning, earthquake, re, storm, etc.).
9) Any damages caused by the process of installation and operation that don't follow the local standards and regulations.
10) Products beyond the warranty period.
1.2.3 Statement
Warranty Statement
Qualied personnel
TO SECURE THE FULL 10-YEAR BATTERY PRODUCT WARRANTY, INSTALL THE WATTSONIC COMMERCIAL CABINET
WITH QUALIFIED INSTALLERS.
This manual applies to electrical installers with professional qualications, who should have the following skills:
1) Training for installation and commissioning of the electrical system, as well as dealing with hazards.
2) Knowledge of the manual and other related documents.
3) Knowledge of the local regulations and directives.

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Product and system introduction
2.1 System introduction
The hybrid solar system usually comprises the PV array, hybrid inverter, lithium battery, loads, and power grid.
PV modules
Battery
Back-up load
On-grid load
Hybrid inverter
Current
transformer
Utility meter for
billing purposes
Smart meter
Utility grid
Note: The system is not suitable for supplying life-sustaining medical devices. It cannot guarantee backup
power in all circumstances.
The applicable grid types for the Wattsonic WTS-[25-50kW]-100A-3P series are TN-S, TN-C, TN-C-S, and TT. When
applied to the TT grid, the voltage of N to PE suggests less than 30V.
TN-S
WTS-25-50K
Tranformer
TN-C
WTS-25-50K
Tranformer
TN-C-S
WTS-25-50K
Tranformer
TT
WTS-25-50K
Tranformer

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Wattsonic WTS Hybrid inverter has the following basic operation modes, and you can congure the operation mode as
per your preference in the App.
General Mode
PV
Battery
Loads
Grid
Inverter
In this working mode, when the power from the PV array is sufcient, PV power will supply the loads, battery, and grid in
the order of loads rst, battery second, and grid last.
(You can set the power to the grid to 0W when the local grid doesn’t allow inverter power to feed to the grid).
PV
Battery
Loads
Grid
Inverter
When the PV power is insufcient, the battery will discharge to supply loads, and the grid will join in if the battery is
not enough to supply loads.
2.2 Operation modes
2.2.1 Running modes introduction

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Peak load Shifting (Load Shifting)
Set the maximum power Pmax (kVA) contracted with the grid.
When the load consumption is less than the Pmax, the PV will charge the battery rst, and the grid will supply the load.
Once the battery is complete, the PV will power the load and the grid rather than the battery.
PV
Battery
Loads
Pload≤Pmax
Grid
Inverter
PV
Battery
Loads
Pload>Pmax
Grid
Inverter
When the load consumption exceeds the Pmax, the inverter will take power from the battery and PV to supply power to
the load to compensate for the power that exceeds the Pmax.
*To realize the “Peak load Shifting” function, the load power that exceeds Pmax has to be within the inverter max output power.
Otherwise, the inverter will only output the maximum power allowed.

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UPS Mode
In this working mode, the inverter will use the power from the PV or grid to charge the battery until it is fully charged,
and as long as the grid is there, the battery won’t discharge.
PV
Battery
Loads
Grid
Inverter
When the grid fails, power from the PV and battery will supply loads connected to the backup side (UPS).
PV
Battery
Back-up Loads
Grid
Inverter

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Economic Mode
In this working mode, you can set charge/discharge power and time in the App. The inverter will use the energy from PV
or the grid (whether to use it or not can be set in the App) to charge the battery for a predetermined period.
PV
Battery
Loads
Grid
Inverter
The inverter will use power from PV and batteries to supply loads for the predetermined period, and the grid will deliver
the insufcient part.
PV
Battery
Loads
Inverter
Grid

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Off-Grid Mode
PV
Battery
Loads
Grid
Inverter
PV
Battery
Loads
Grid
Inverter
In the purely off-grid mode, power fromPV will supply the back-up loads rst andthen charge the battery if there's
surpluspower.
When the power from PV isn’t enough, the battery will discharge to supply backup loads with PV.
Normally, the Back-Up switching time is less than 10ms. However, some external factors may cause the system to fail on
switching to Back-Up mode. Therefore, the conditions for using the Back-Up function smoothly are as follows for your
awareness.
1) Do not connect loads that are dependent on a stable energy supply for a reliable operation.
2) Do not connect loads with a total capacity more incredible than the maximum Backup capacity.
3) Do not connect the loads that may cause very high start-up current surges, such as non-frequency conversion air
conditioning, vacuum cleaner or half-wave loads such as hair dryer, heat gun, hammer drill.
4) Due to the battery's condition, battery current might be limited by some factors, including but not limited to the
temperature and weather.
The inverter will restart in case of overload protection. The time required for restarting will increase (5 min at most) if
overload protection repeats. Try to reduce Back-Up load power within maximum limitation or remove the loads which
may cause very high start-up current surges.
2.2.2 Back-up and off-grid output

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2.3 Product introduction
Picture Item Content Size(mm)
Cabinet
Battery Module
Sub-Master BMS
Module
Accessory Accessory
Master BMS
Module
Master BMS
Module
Sub-Master BMS
Module
Cabinet Frame
Battery Module
W:640
D:870
H:2109
W:800
D300
H:620
W:445
D:738
H:95
W:448
D:695
H:188
W:448
D:695
H:188
––
Inverter Inverter
Component list

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Wiring terminals are at the bottom of the inverter, as shown in the table below.
Item Terminal Note
1 Display and LED panel Display the operation information and working status of the inverter.
2 Hanger Used to hang the inverter on the wall-mounting bracket.
3 DC switch Used to safely disconnect the DC circuit.
4 DC input terminal PV connector (WTS-25-50K 8 pairs / WTS-40-50K-P 6 pairs)
5 Battery input terminal Battery connector
6 COM1 port WiFi/LAN/4G module connector
7 COM2 port Multi-function Connector (Meter/BMS/RS485/DRED)
8 On-grid output terminal Used for On-grid output cable connection
9 Back-up output terminal Used for Back-up output cable connection
Connection area
PV1
PV2
PV3
PV4
DC SWITCH 3-4 BAT+ BAT-
COM2
COM1 BACK-UP ON-GRID
DC SWITCH 1-2
1
2
3 34 4 5 6 7 8 9
2.3.1 Inverter
The Wattsonic WTS-[25-50kW]-100A-3P series inverter is also known as a hybrid inverter or storage inverter, which is
mainly used to combine the PV array, lithium battery, loads, and power grid to realize intelligent power management and
dispatching.
The WTS-[25-50kW]-100A-3P series hybrid inverter includes 7 models, which are listed below:
WTS-25K-100, WTS-30K-100, WTS-36K-100, WTS-40K-100, WTS-50K-100, WTS-40K-P-100, WTS-50K-P-100

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Item Indicator Status Description
1Power and Alarm
Indicator
Off No power.
Blue
Quick ashing Inverter entered self-test status.
Slow ashing Inverter entered waiting status.
Breathe ashing Inverter works normal.
Orange Breathe ashing
Low battery warning, the battery
power is about to reach the SOC
protection value.
Red Always on An alarm or fault is detected, view
the fault info on the display.
2Grid
Indicator
Off Grid lost.
Slow ashing Inverter detected grid but not running in on-grid mode.
Always on Inverter works in on-grid mode.
3Communication
Indicator
Green Always on The inverter communication is
running normally.
Green Flashing
The inverter communicates with
EMS or Master inverter through
RS485 or CAN.
Orange Always on The inverter isn’t communicating
with Wattsonic smart meter.
Red Always on The inverter isn’t communicating
with the BMS.
4 Display Display off to save power, press the button to wake up the display.
5 Button Switch display information and set parameters by short press or long press.
1
23
4
5
Indicators/controls on the device
2.3.2 Battery module
A battery module consisting of battery cells and a slave control
Connection terminals of the battery module are intergrated into the terminal set in the back side of the battery module.
No extra cables needed for battery modules installation.

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2.3.3 Master & Sub-Master BMS
The battery management unit of the rack has a built-in Rack BMS and battery protection Unit. Mounted in the
uppermost position of the cabinet.
Use 1*sub-master BMS for a single cabinet system.
Use 1*master BMS and (n-1)*sub-master BMS for a n*cabinet system.
7 8 9
1 2 3 4 5 6
WiFi port
COM port
Status indicator
LAN port
Power out -
Power out +
Service 1
Service 2
Main switch
1
2
3
4
5
6
7
8
9
Connect with external antenna
Multi-function communication connector: RS485/CAN/DRED
Please refer to page 38 for terminal denition
Green --> system start normally
Red --> system error
No light --> system shutdown
RJ45 connnection
Negative& positive power output port
Reserved service port for BMS system and inverter
Please refer to page 61 for terminal denition
Battery rack switch, turn clockwise to open, turn counterclockwise to close