Weco HeSU 5K3-LV HV User manual

WeCo 5K3-LV-HV
HeSU 5K3-LV HV Page 1 of 69 V_1.1_21-Nov-2020_LV-HV
Energy Storage System UNIVERSAL 5K3
LOW VOLTAGE &HIGH VOLTAGE

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ATTENTION: The battery can explode under heavy impact.
ATTENTION: The batteries weight exceeds 25kg. Appropriate mechanical lifting
equipment must be used.
ATTENTION: The battery can explode and must not be 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 is ZERO volts present on the terminals before performing any
operation on the battery.
ATTENTION: Always wear Individual protection devices and follow the safety plan of
this manual.
This Battery must be recycled by a certified professional company

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Contents
SECTION-1: INSTALLATION & PRE-OPERATIONAL PROCEDURES.... 9
1.1 Module Handling and Lift Out from Box.......................................................................9
1.1.1 Package Information and System Configuration List.............................................................................. 10
1.2 Wall Mount or Stack Mount Configuration.................................................................10
1.2.1 Battery Dimensions........................................................................................................................... 10
1.2.2 Wall Mount........................................................................................................................................ 10
1.2.3 Stack Mount........................................................................................................................................ 12
1.3 Battery Terminal Function Definition.................................................................................14
1.4 Out of the Box Pre-Operational Check.........................................................................15
SECTION-2 LOW VOLTAGE CONFIGURATION................16
2.1 Product Introduction............................................................................................................ 16
2.1.1 Identifying the individual module............................................................................................................16
2.1.2 Product Identification and labels..............................................................................................................17
2.1.3 Accessory List (Standard Kit 120A single module LV)...........................................................................17
2.1.4 Necessary Installation Tools.................................................................................................................... 18
2.1.5 Personal Protective Equipment........................................................................................................... 18
2.2 Low Voltage Module Wiring and Set Up............................................................................ 19
2.2.1 Battery Connections............................................................................................................................19
2.2.2 Battery Terminal Definition................................................................................................................ 20
2.3 Low Voltage DIP Switch Settings........................................................................................ 20
2.3.1 Stand Alone Battery............................................................................................................................ 21
2.3.2 Parallel Connection (Master + Slave #1)............................................................................................ 21
2.3.3 Parallel Connection (Master + Slave #1 + Slave #2).......................................................................... 21
2.3.4 Parallel Connection (Master + Slave #1 + Slave #2 + Slave #3)........................................................21
2.3.5 Parallel Connection (Master + Slave #1 + Slave #2 + Slave #3 + Slave #4)......................................21
2.4 Parallel Battery Wiring Connections............................................................................ 22
2.4.1 Low Voltage Single Stack Power and Data Connections (5-Modules)...............................................23
2.5 Module Activation and Shutdown............................................................................... 25
2.5.1 LED Visual Indication Lights.................................................................................................................. 25
2.5.2 Stand Alone Battery Front Panel Control................................................................................................ 27
2.5.3 Parallel Battery Configuration................................................................................................................. 27
2.6 LV Product Compatibility List + Maximum Modules Permitted per Cluster............... 29
2.6.1 Direct Parallel with CAN Communication......................................................................................... 29
2.6.2 LV Direct Parallel Without BMS Communication with Inverter.............................................................30

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2.7 Overview of Multi Cluster System.............................................................................. 31
2.8 CAN Hub for Multi Cluster Configuration................................................................32
2.8.1 CAN Hub Dimensions........................................................................................................................ 34
2.8.2 Control Logic and Protection Limit.................................................................................................... 35
2.8.3 CAN Hub General System Description................................................................................................... 36
2.8.4 Multi Cluster Configurations.............................................................................................................. 38
2.8.5 Cluster Configuration Accessories...........................................................................................................41
2.8.6 Inverters with no Communication Facility.............................................................................................. 42
SECTION-3 HIGH VOLTAGE CONFIGURATION...............44
3.1 Product Introduction............................................................................................................ 44
3.1.1 Identifying the Individual Module........................................................................................................... 45
3.1.2 Product Identification and labels..............................................................................................................45
3.1.3 Accessory List (Standard Kit).................................................................................................................. 46
3.1.4 Necessary Installation Tools.................................................................................................................... 46
3.1.5 Personal protective equipment............................................................................................................ 47
3.2 High Voltage Module Wiring and Set Up........................................................................... 48
3.2.1 Battery Connections............................................................................................................................48
3.2.2 Battery Terminal Definition................................................................................................................ 49
3.3 High Voltage Module Configuration – HV Box 750Vdc-............................................50
3.4 High Voltage DIP Switch Settings..................................................................................51
3.4.1 Serial Tower Connection #1 Set Up of the HV box CAN Communication Loop.............................. 52
3.5 Serial Battery Wiring Connections............................................................................... 53
3.5.1 High Voltage Power Connections (12-Modules)................................................................................ 54
3.5.2 DATA Connections (Example of 12-Modules)................................................................................... 55
3.5.3 HV BOX Connections.........................................................................................................................59
3.6 Module Activation and Shutdown............................................................................... 65
3.6.1 LED Visual Indication Lights.................................................................................................................. 65
3.6.2 Stand Alone Battery Front Panel Control................................................................................................ 66
3.7 HV Product Compatibility List + Maximum Modules Admitted per Cluster................68
3.7.1 Direct Serial with CAN Communications.......................................................................................... 68
3.7.2 Direct Connection without CAN Communications................................................................................. 69

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Statement:
The information and guidance contained in this manual is related to the WeCo 5K3 – LV – HV Stackable model of battery
This manual contains two sections:
Section 02 is for LOW VOLTAGE APPLICATION
Section 03 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 datasheet are available on www.wecobatteries.com.
It is essential that the battery unit is equipped with the latest firmware version available.
New batteries always ship with the latest version of firmware.
WeCo will release new firmware to improve the functionalities and battery capabilities from time to time.
The latest version of the firmware is always available free of charge and can be updated by your local installer.
You can also write an email to ser[email protected] to understand the upgrade procedure.
ATTENTION
This battery model is designed to be used indoors
The STANDARD IP20 degree of protection does not allow installation in outdoor environments even if sheltered
from the weather.
The INDOOR definition means literally the internal environment, the room must be closed to unauthorized persons,
ventilated and dry.
PREFACE
Thank you for choosing our product. We will provide you with a high-quality product as well as reliable after 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.
Special Announcement:
The manufacturer holds the right of final explanation of any content in this manual.

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Product Overview
WeCo’S 5k3 LV HV Stackable Module is a DUAL VOLTAGE module that can be used in a Low Voltage configuration or in a High
Voltage configuration.
For LOW VOLTAGE (48-58Vdc) Configuration Refer to Section-2
For HIGH VOLTAGE (150-750Vdc) Configuration Refer to Section-3
The 5K3 LV-HV Stackable module is designed for home and commercial applications from 5 kWh up to 132 kWh in
Low Voltage configuration and from 20 kWh up to 680kWh in High Voltage configuration
INFORMATION IN THIS MANUAL
About this Manual
This manual relates only to the WeCo 5k3 LV-HV Stackable Model. This manual is intended to be used only by qualified installers who
must read carefully and always refer to the manual for guidance on correct operation and maintenance of the product.
Use Range
This installation guidance applies for the High Voltage and Low Voltage Inverters.
Make sure to identify the correct inverter charging parameters before connecting to the battery.
Each 5k3 LV-HV module has two different circuits and according with the inverter voltage range the installer must choose the correct
battery configuration for the inverter voltage range.
Additional Information
Specification of the product can be changed without any notice to customers for system improvements.
Symbols Used
Symbol Meanings：
CAUTION：
CAUTION represents hazardous situations which can cause light injuries if not avoided.
NOTICE：
NOTICE represents the situations which can cause damage to property if not avoided.
INFORMATION：

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INFORMATION provides tips that are valuable for optimum installation and operation of the product.
SAFETY
Warnings and Notification
Installation environment requirements: The 5k3 LV-HV Stackable module is designed for household/commercial purposes. For
installation, it must be installed in a location complying with IP20 (IP 55 or 65 are available on request). Installations in locations that
do not comply with IP20 may cause failure and/or damage to the product and subsequently the product warranty will be considered
void and no responsibility will be accepted for any related accident or damage.
Safety Guidelines
CAUTION：
At all times be certain to avoid a short-circuit between the anode terminal and a cathode terminal of the battery. All electrical
connections on the 5K3 LV-HV module must be made only by qualified professional personnel.
When installed and operated in accordance with this manual, the 5K3 LV-HV module will perform in a safe and reliable manner in
accordance with the battery operating specifications.
Subjecting the battery to an unsuitable operating environment or to damage, misuse or abuse may result in health and safety risks
such as overheating or electrolyte smoke potential. All personnel must comply with the safety precautions and observe all warnings
as detailed in this document. If any of the safety precautions or procedures detailed in this manual is not fully understood by the
reader, the reader must not perform any operation on the battery, until they have contacted the WeCo customer service officer for
clarification and confirmation of understanding of the correct procedure.
The safety guidelines included in this document may not include or consider all the regulations in your area of installation/operation.
When installing and operating this product the installer must review and consider applicable local laws and regulations in accordance
with the industry standards of the product.
Installation personnel shall not wear watches and other metal items when performing installations as a precaution to avoid short
circuits and personal injuries.
CAUTION：
The weight of an individual 5k3 LV-HV module is over 50kg, please use original packaging and perform all safety precautions if the
battery is to be relocated to another location, to avoid damage to the product and personnel injury.
ATTENTION
The high voltage configuration must have a minimum number of 4 modules in order to reach at least 200Vdc in series.
The maximum number of modules that can be stacked is 6 on each tower (due of the tower height and stability)
The maximum Voltage string series in HV configuration is 750Vdc and the HV-BOX it`s a safety device that must be installed
ZCS AZZURRO is compatible only with HV BOX 750Vdc

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ATTENTION
The stack configuration shall be concluded by interlocking the modules by using the module feet as shown below
GENERAL PREPARATION
Before Installation
Ensure that all the modules are turned OFF
Battery installation location should be at least 20m away from sources of heat, sparks or other sources of extreme temperature.
Battery connecting cables should be as short as possible to prevent excessive voltage drops..
Batteries with different capacity, different type/model or design or from different manufacturers cannot be connected together.
1. Before connecting the battery, the battery positive and negative poles need to be carefully checked to
ensure correct installation.
2. The installation location must be on a flat ground, in a dry clean and protected room, away from water
and humidity.
1) Original Position of the feet
2) Loose both screws and
remove the feet
3) Install and secure the feet across two
modules by using the original screws

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The mechanical installation method for the 5K3 LV-HV modules can be considered ‘’ conceptually’’ the
same for HV and LV configurations
The installer who intends to install the 5K3 LV-HV module in the HV configuration shall read this entire
manual including the HV configuration information included in Section-3 of this manual
SECTION-1: INSTALLATION & PRE-OPERATIONAL PROCEDURES
1.1 Module Handling and Lift Out from Box
The battery is always delivered in WALL mode and it is therefore necessary for the installer to make simple changes to
install the STACK kit. Below are the installation phases.
ATTENTION
The battery must be lift by 4 persons by using the 4 handles
2 Handles are inbuilt and the other two are provided as temporary handles to be used as shown below
Open the carton box, find the portable and retractable handles, position them and proceed with the lifting up.

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1.1.1 Package Information and System Configuration List
The battery box is packed in cartons with accessories.
When you receive the goods, please read the configuration list carefully to make sure that the battery box and accessories are
received in the correct quantities and type and visually inspect to ensure that they are free from damage.
Refer to Section 2.1.3 for Low Voltage packing list and to Section 3.1.3 for High Voltage packing list.
1.2 Wall Mount or Stack Mount Configuration
NOTE: The LV/HV 5K3 battery module ships as standard in the wall mount configuration.
1.2.1 Battery Dimensions
1.2.2 Wall Mount
Step 01: Install the wall bracket by using the wall plugs and screws contained in the battery kit.
The wall must be inspected before proceeding with the bracket installation, a local civil engineer should assess the correct installation
method.
STEP 01
100/120cm