Weco 5K3-XP User manual

WECO 5K3-XP-EMEA
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Installation and User Manual
WECO 5K3-XP
EUROPE VERSION Version 1.00 June 2022
LOW VOLTAGE & HIGH VOLTAGE

WECO 5K3-XP-EMEA
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ATTENTION
THIS MANUAL MUST BE READ ENTIRELY EVEN IF YOU USE THE 5K3XP AS HIGH
VOLTAGE YOU MUST READ ALSO THE LOW VOLTAGE SECTION
ATTENTION: The battery could explode and/or be severely damaged if dropped or
Crushed. Never install the battery if the battery appears damaged.
ATTENTION: Appropriate mechanical lifting equipment must be used since
the Battery Module weighs 126.3Lbs / 57.3 kg
ATTENTION: The battery may explode or catch fire if exposed to open
flames or other extreme sources of heat.
ATTENTION: The battery terminals must be disconnected before
commencing any work on the battery.
ATTENTION: This battery can accumulate parasite current. Do not touch
the B+ and B- terminals. Always check the B+ and B- terminals with a
voltmeter.
Always ensure that there are ZERO volts present on the terminals before
performing any operation on the battery, the HV FAST terminals must
have their rubber protection in place all the time, remove them only
when ready to connect the HV cable.
ATTENTION: Always wear Individual protection devices, use insulated tools,
and follow the safety plan of this manual.
At end of life, these batteries must be disposed of properly by a certified
professional company.
Do not open the battery cover for any reason.
Opening the battery is a prohibited and potentially dangerous operation.
Do not short the battery terminals as this may cause fire or explosion.
Do not use charging devices, cables, connectors, fuses, switches not approved by WeCo.
The battery and its connections such as cables, switches, fuses, bus bars etc. they must be inspected,
cleaned, tightened every three months or whenever necessary also in consideration of the
environmental conditions and or stress of use of the system
Check the insulation resistance of the connections every 3 months. Cables and insulators can have an
early reduction of their insulation coefficient if exposed to environmental conditions or excessive use
stress.WeCo declines all responsibility for illegal actions on the battery.

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Contents
Statement:....................................................................................................................................... 6
Preface: ........................................................................................................................................... 6
Declaration: ..................................................................................................................................... 6
System Design .............................................................................................................................. 7
Battery Operation ............................................................................................................................ 7
Storage ............................................................................................................................................................ 7
Temperature .................................................................................................................................................... 7
Depth of Discharge (DoD).................................................................................................................................. 7
Charging........................................................................................................................................................... 7
Warranty.......................................................................................................................................................... 7
Product Overview ............................................................................................................................ 8
Symbols Used................................................................................................................................... 8
Battery Module Overview ................................................................................................................ 9
Safety Warnings and Notifications...................................................................................................11
Warning Statements .......................................................................................................................12
General Preparation........................................................................................................................13
SECTION 1 - STORAGE & PRE-OPERATIONAL PROCEDURES...............................................................16
1.1 Storage - Transportation –Removing / Relocation of Batteries ................................................................... 16
1.2 Module Unpacking and Handling ............................................................................................................... 18
1.2.1 Package Information and System Configuration List .........................................................................................................19
1.3 Wall Mount or Stack Mount Configuration ................................................................................................. 19
1.3.1 Battery Dimensions* (Wall Bracket) ................................................................................................................................19
1.3.2 Wall Mount .....................................................................................................................................................................19
1.3.3 Stack Mount....................................................................................................................................................................23

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1.4 Battery Terminal Function Definition.......................................................................................................... 25
1.5 Out of the Box Pre-Operational Check........................................................................................................ 26
SECTION 2 - LOW VOLTAGE CONFIGURATION....................................................................................27
2.1 Product Introduction................................................................................................................................. 27
2.1.1 Identifying the Individual Module....................................................................................................................................27
2.1.2 Accessory List (Standard Kit 120A Single Module LV)........................................................................................................29
2.1.3 Necessary Installation Tools.............................................................................................................................................30
2.1.4 Personal Protective Equipment +1000 Vdc Insulated Tools..............................................................................................30
2.2 Low Voltage Module Wiring and Set Up...................................................................................................... 31
2.2.1 Battery Connection Terminals .........................................................................................................................................31
2.2.2 BATTERY CAN Pin Out .....................................................................................................................................................31
2.3 Low Voltage DIP Switch Settings................................................................................................................ 32
2.3.1 LOW VOLTAGE PARALLEL CONFIGURATION.....................................................................................................................33
2.3.2 LED Visual Indication Lights.............................................................................................................................................33
2.4 Module Activation and Shutdown.............................................................................................................. 34
2.5 Low Voltage Parallel Set Up Overview........................................................................................................ 35
2.5.1 Auto ID Assignment and DIP Configuration for LOW Voltage Single Cluster (Parallel Connection) ...................................37
2.5.2 Single Cluster DIP and DATA Connection .........................................................................................................................38
2.5.3 Parallel Battery Wiring Connections ................................................................................................................................39
2.5.4 Low Voltage Single Stack Power and Data Connections (15-Modules Maximum).............................................................40
2.5.5 LED Bar Indications..........................................................................................................................................................41
2.6 Stand Alone Battery Front Panel Control .................................................................................................... 43
2.6.1 Start Battery....................................................................................................................................................................43
2.6.2 Shut Down Battery..........................................................................................................................................................43
2.6.3 Low Battery –Force Charge.............................................................................................................................................43
2.7 Parallel Battery Configuration.................................................................................................................... 43
2.7.1 Activation of Parallel Batteries (From Master to last module for a maximum of 15) ........................................................43
2.7.2 Shutdown of Parallel Batteries........................................................................................................................................44
2.7.3 LV Direct Parallel Connection WITHOUT Certified Inverter BMS Communication (Open-Loop) ........................................45
2.7.4 LV Direct Parallel Connection WITH Certified Inverter BMS Communication (Closed-Loop) .............................................46
2.8 Power Connection of a Single Cluster......................................................................................................... 47
2.9 CAN HUB for Multi Cluster Configuration ................................................................................................... 49
2.9.1 Low Voltage CAN HUB Dimensions..................................................................................................................................51
2.9.2 Control Logic and Protection Limit...................................................................................................................................51
2.9.3 CAN Hub General System Description ..............................................................................................................................52
2.9.4 Multi Cluster Configurations............................................................................................................................................53
2.9.5 Master ID Set Up and Connection Diagram......................................................................................................................54
2.9.6 Power Connection Example.............................................................................................................................................55
2.9.7 Conceptual Diagram of a Cluster composed by 5 clusters and 8 batteries each................................................................56
2.9.8 Conceptual Diagram between Master Modules of multiple clusters.....................................................................................57
2.10 Cluster Configuration Accessories ............................................................................................................ 58

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2.10.1 Single Cluster Configuration Kit .......................................................................................................................................58
2.10.2 Multi Cluster Hub Device.................................................................................................................................................58
2.11 Low Voltage Inverter Compatibility List................................................................................................... 59
SECTION 3 - HIGH VOLTAGE CONFIGURATION ...................................................................................62
3.1 Product Introduction................................................................................................................................. 63
3.1.1 Identifying the Individual Battery Module .......................................................................................................................63
3.1.2 Product Identification and labels.....................................................................................................................................64
3.1.3 HV BOX Dimensions ........................................................................................................................................................65
3.1.4 Battery Module Accessory List (Standard Kit) ..................................................................................................................66
3.1.5 HV BOX KIT (Included in the carton box)..........................................................................................................................67
3.1.6 Necessary Installation Tools.............................................................................................................................................68
3.1.7 Personal Protective Equipment + 1000 Vdc Insulated Tool Kit .........................................................................................68
3.2 High Voltage Battery Module Wiring and Set Up.......................................................................................... 69
3.2.1 Battery Connections........................................................................................................................................................69
3.3 HV BOX Overview ..................................................................................................................................... 71
3.4 High Voltage Module Configuration............................................................................................................ 73
3.5 High Voltage DIP Switch Settings................................................................................................................ 74
3.5.1 Serial Tower Connection #1 Set-Up of the HV Box CAN Communication Loop...................................................................75
3.6 Serial Battery Wiring Connections.............................................................................................................. 76
3.6.1 High Voltage Power Connections .....................................................................................................................................77
3.6.2 DATA Connections (Example of 12-Modules)...................................................................................................................78
3.6.3 HV Box and Battery Module Power Connection..............................................................................................................80
3.6.4 Single HV Box Connection to an Inverter ........................................................................................................................81
3.6.5 Multi HV Box Connection ................................................................................................................................................82
3.6.6 Multi HV Box Connection ................................................................................................................................................83
3.7 HV Box ADDRESS....................................................................................................................................... 85
3.7.1 LED Visual Indication Lights ............................................................................................................................................88
3.7.2 Stand-Alone Battery Front Panel Control * FORCED CHARGE*.........................................................................................89
3.8 HIGH VOLTAGE INVERTER COMPATIBILITY ................................................................................................. 91
3.9 WECO BMS - LOW VOLTAGE PC SOFTWARE for 5K3-XP............................................................................... 92
3.10 WECO BMS - HIGH VOLTAGE PC SOFTWARE for 5K3-XP ............................................................................ 96

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Statement:
The information and guidance contained in this manual is related to the WECO 5K3-XP Stackable model
of battery. This manual contains two sections:
Section 2 is for LOW VOLTAGE APPLICATION
Section 3 is for HIGH VOLTAGE APPLICATION
In case of product upgrades or other reasons, this document will be adjusted accordingly. Unless otherwise
agreed, this document is intended to be used only as a guide, and all statements, information and advice in the
documentation shall not constitute any express or implied action in contradiction to local regulations or
standards.
For more information, please contact us.
The official information and the latest data sheet are available on www.wecobatteries.com
It is essential that the Battery Module is equipped with the latest firmware version available. New batteries are equipped
with the latest Firmware Version, however before commissioning please check via Bluetooth or WiFi APP the latest FW
release, or search it on https://wecobatteries.com/download-area/
From time to time, firmware will be updated to improve the functionalities and battery capabilities.
The latest version of the firmware is always available free of charge and can be updated by your local installer. You can
always contact [e-mail] for additional information on the upgrade procedure.
Preface:
Thank you for choosing our product.
We will provide you with a high-quality product as well as reliable after-sale service. To protect against harm to both
personnel and the product, please read this manual carefully.
This manual provides detailed information on operation, maintenance and troubleshooting of the product as
well as health and safety advice.
Declaration:
The manufacturer holds the right of final explanation of any content in this manual.
The Battery Capacity is intend to be 5,3kWh in the range 100-0% of the BMS.
The capacity is not constant and may vary based on many factors, the energy degradation is not constant over the time or
cycles and is heavily affected by the temperature, C-Rate and DoD ( depth of Discharge)
The performance Limited Warranty Documents sets the parameters to obtain the best performances from the battery
All trademarks shown in this manual belong to their legitimate owners; trademarks of third parties, product names,
trade names, corporate names and companies mentioned may be trademarks owned by their respective owners or
registered trademarks of other companies and are used purely for explanatory purposes and for the benefit of the
owner, without any purpose of violation of the copyright in force.
NOTICE:
This Battery Module is designed to be used indoor
The STANDARD IP20 degree of protection does not allow installation in outdoor environments even if sheltered from the weather.
The Battery Modules must be stored indoors in a clean, dry, cool location in a limited access area.
DO NOT OPEN THE BATTERY COVERS DO NOT REPAIR DISMOUNT OR DISASSEMBLE ANY PART OF THE BATTERY
DO NOT OPEN THE BATTERY COVER AS THIS OPERATION FORBIDDEN

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System Design
System Design is the process of defining the architecture, components, modules, interfaces and load data for a
system to satisfy specified requirements.
For a solar energy system, these components are the PV modules, inverter/charge controller & batteries, as
well as the different interfaces of those components.
Battery Operation
There are several factors that affect the operation of the battery that could impact its ability to deliver capacity
and life expectancy.
Storage
Battery Module shall be stored in original packaging, in a clean, level, dry, cool location indoors.
Recommended storage temperature is 77°F / 25°C
The battery can be stored in the range of -4°F to +113°F / -20°C to +45°C but it requires an inspection* and recharge**
every three months (max charging current is 0.1C to recover from low voltage status during the storage period ).
Max SoC storage is 50%.
*Inspection parameters –identify the State of Charge (SOC), look for any alarms and address accordingly, look for physical
damage to the Battery Module. **Charge at 0.1C and not more than 50% SOC. If shipped by sea, you must refer to the
UN38.3 standard, if by road, refer to the local codes.
Temperature
Many chemical reactions are affected by temperature, and this is true of the reaction that occurs in a storage battery.
The chemical reaction of a Li-Ion is slowed down by a lowering of the electrolyte temperature that results in less capacity.
A battery that will deliver 100% of rated capacity at 77°F /25°C will only deliver approximately 75% of rated capacity at +50°F
/ +10°C
At temperatures down to +19.4°F /+7°C the charge current may be limited to 0.1C depending on other factors, however at
temperatures below +19.4°F /-7°C charging is restricted by the BMS.
As part of the Performance Warranty, Charge and Discharge shall be in the range +68°F to +77°F +20°C to +25°C Any usage
outside this range is not covered by Performance Warranty.
Depth of Discharge (DoD)
Depth of discharge is a function of design. The deeper the discharge per cycle, the shorter the life of the
battery. A cycle is a discharge and its subsequent recharge regardless of depth of discharge, it consider the
energy IN and OUT
Lower is the DOD value higher is the battery longevity and the capacity retention over the time.
C-Rate
Value of the Current used to charge and discharge the battery is expressed in C ( 1C = 100A, 0,1C= 10A in case
of the 5K3 100Ah battery)
Charging ( and discharging)
Most battery capacity/life issues can be traced to improper charging. Improper charging settings may lead to an
overcharging or undercharging condition, any wrong charging process will affect the life of the battery or its
ability to retain energy
Lower is the C-Rate of the charging/discharging process and more the battery will benefits on the long term
performances
Manufacturing Warranty
Although the BMS of the battery allows a wide range of use, both in terms of temperature and charging
currents, this should not be construed as an implicit authorization to use the battery at these levels.
For the purposes of the Performance Warranty, it is mandatory that the battery is used within the range of
temperature and charge/discharge current, and Depth of Discharge indicated in the Performance Warranty.
See Limited Warranty Document
Performances Warranties when
It is an additional Warranty and only apply to batteries connected via BMS line to an approved inverter, the working
parameter of the battery must remain within the performance warranty terms
Any other use, even if permitted by the BMS ranges, is not covered by the Performance Warranty
See Limited Warranty Document

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Product Overview
The WeCo 5K3-XP is a Stackable Battery Module with a DUAL VOLTAGE module that can be used in a Low Voltage
configuration or in a High Voltage configuration.
For LOW VOLTAGE (48.5-58.4 Vdc)* Configuration Refer to Section 2
For HIGH VOLTAGE (80/200-750Vdc)* Configuration Refer to Section 3
*Voltage ranges are estimates only as they always depend on interactions with other devices and ambient conditions.
Information in this Manual
About this Manual
This manual relates only to the 5K3-XP (EUROPE VERSION) Stackable Battery Module. Only trained and authorized
personnel should install, troubleshoot, or assist WECO in local repairs of these Battery Modules. This manual should be
reviewed in its entirety for proper storage, installation, and operation of the Battery Module.
Use Range and Voltage Range
This installation guidance applies for the High Voltage and Low Voltage Inverters.
Make sure to use the correct inverter charging parameters before connecting to the battery.
Each WeCo 5K3-XP Battery Module has two different circuits and depending on the inverter voltage range, the installer
must choose the correct battery configuration for that range, never use the LOW VOLTAGE screw terminal for serial
connection, never use the HIGH VOLTAGE terminal for LOW VOLTAGE connection or to recharge the battery as the HV
CIRCUIT on the Battery Circuit Is not protected by contactor or MOSFET for Overvoltage( This protection function is made by
the HV BOX )
HV BOX for EU (EMEA VERSION) is designed to operate from 80 up to 750Vdc, if you need an HIGH Voltage HV BOX XP
please order the HV BOX XP type B ( EU type B version with Voltage Ranges starting from 150Vdc to 1000Vdc)
Additional Information
Product specifications subject to change without notice.
IMPORTANT NOTICES：
HV BOX ( EMEA VERSION) has a minimum startup voltage of 80 Vdc, (two 5K3XP modules in serial connection) however it is
suggested to use a minimum of four modules to have an adequate buffer of energy to prevent low voltage shutdown of the HV
BOX during a long period of the inverter on standby, or due to solar charger inactivity.
The Start Up of the Inverters is typically above 100Vdc, make sure to consider the Inverter Battery Voltage Range Before setting
up the battery Cluster.
The HV BOX can turn on with a minimum of 80Vdc however it is mandatory to comply with the inverter Nominal Voltage. Below
80Vdc the HV BOX will shuts down and the safety protection cannot be granted.
For the calculation of the energy of a cluster (in both LV and HV systems) the nominal capacity of a battery is generally counted in
5.2kWh because of the multiple connection inefficiency due the different voltage and resistance between modules.
As HV system the cluster total usable energy might be reduced due the imbalances between modules, always consider to fully
balance the single modules before composing the HV cluster to maximize the energy usage of the cluster
NOTE:
A difference of 0,5V between modules connected in series can result in over 40% of less usable capacity due the BMS
intervention for Higher or Lower voltage limit of the single module into the HV CLUSTER.
Symbols meaning
CAUTION：
CAUTION represents hazardous situations which can cause injuries if not avoided.
NOTICE：
NOTICE represents the situations which can cause damage to property if not avoided.
INFORMATION：
INFORMATION provides tips that are valuable for optimum installation and operation of the product

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Battery Module Overview
INFORMATION provides tips that are valuable for optimum installation and operation of the product.
CONNECTION HUB
PROTECTION PLATE
UPPER REMOVABLE
BRACKET
WALL BRACKET
LOWER REMOVABLE
BRACKET
REMOVABLE
HANDLES
STRUCTURAL FEET
RUN BUTTON
POWER
SWITCH
OPERATOR PORT

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ATTENTION:
THE BATTERY IS DUAL VOLTAGE –
IT CAN BE INSTALLED IN EITHER A HIGH VOLTAGE CONFIGURATION OR A LOW VOLTAGE CONFIGURATION,
BUT NEVER AT THE SAME TIME.
BE AWARE OF THE DIFFERENT CONNECTION METHODS AND THE SPECIFIC USE OF THE TERMINAL
CONNECTORS.
LOW VOLTAGE ONLY
SCREW TERMINAL
HIGH VOLTAGE ONLY
FAST CONNECTORS
HIGH VOLTAGE
SERIAL CONNECTION
CONNECTION
LOW VOLTAGE
PARALLEL CONNECTION