Weco HeSU UNIVERSAL 5K3 User manual

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 1
48V Household Energy Storage System UNIVERSAL 5K3
Product manual HESU Max 5 units in Parallel Max 5 Clusters
Model type HeSU UNIVERSAL STACKABLE UNITS
BMS-CAN V3.0
Version：5K3_V2.00-November 2019

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 2
Battery can explode if heavy object impact on it.
Battery´s Weight Exceed 52 kg, must be handle with mechanical devices
Battery can explode, keep away from free flames or sparks
disconnect any terminal before operating the battery
This battery can accumulate parasite current, disconnect the main breaker and wait 5 minutes
before operating. Don’t touch the terminal B+ B- check always with a Voltmeter, “Must be 0V”
Always wear Individual protection devices and follow the safety plan of the
This Battery must be must be recycled by professional company

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 3
Content
Statement:................................................................................................................................................................................5
1 Preface....................................................................................................................................................................................6
2 Information in this Manual..........................................................................................................................................6
2.1 About this Manual.............................................................................................................................................................................................6
2.2 Use Range..............................................................................................................................................................................................................6
2.3 Additional Information....................................................................................................................................................................................6
2.4 Symbol Used.........................................................................................................................................................................................................6
3 Safety......................................................................................................................................................................................7
3.1 Warnings and Notification............................................................................................................................................................................7
3.2 Safety Guidelines ...............................................................................................................................................................................................7
4 Product Overviews...........................................................................................................................................................7
4.1 Produce Introduction.......................................................................................................................................................................................7
4.2 Identifying the Product...................................................................................................................................................................................8
4.3 Product identification......................................................................................................................................................................................8
5 System Installation ..........................................................................................................................................................9
5.1 Installation notice ..............................................................................................................................................................................................9
5.2 Package information and system configuration list ........................................................................................................................9
5.2.1 Configuration list of -HESU- SERIES ............................................................................................................................................................................................................9
5.2.2 Parts list..................................................................................................................................................................................................................................................................... 10
5.2.3 Installation Tools ................................................................................................................................................................................................................................................... 11
5.2.4 Personal protective equipment ...................................................................................................................................................................................................................... 11
5.3 Installation..........................................................................................................................................................................................................12
5.3.1 Product dimensions ............................................................................................................................................................................................................................................. 12
5.3.2 Installation method .............................................................................................................................................................................................................................................. 13
5.4 Wiring definition .............................................................................................................................................................................................17
5.4.1 Terminal function and definition ................................................................................................................................................................................................................... 17

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 4
5.5 A single battery box is connected to the inverter..........................................................................................................................18
5.6 A plurality of battery boxes are connected in parallel with the inverter............................................................................18
5.6.1 Communication line connection .................................................................................................................................................................................................................... 18
5.6.2 Power cable connection ..................................................................................................................................................................................................................................... 19
6 Battery box activate and shutdown.....................................................................................................................22
6.1 Panel buttons and LEDs meaning..........................................................................................................................................................22
6.2 The operation steps of the battery box works alone ...................................................................................................................23
6.2.1 Start battery box................................................................................................................................................................................................................................................... 23
6.2.2 Shut down battery box....................................................................................................................................................................................................................................... 23
6.2.3 Low battery forced charge function ............................................................................................................................................................................................................ 23
6.3 The steps of the battery boxes work in parallel..............................................................................................................................23
6.3.1 Activate the parallel batteries system........................................................................................................................................................................................................ 23
6.3.2 The parallel Batteries system shutdown ................................................................................................................................................................................................... 24
7 Troubleshooting .............................................................................................................................................................23
8 Product compatiblility list.........................................................................................................................................26

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 5
Statement:
The following are related to the product 5K3 HeSU RACK Version
Due to product upgrades or other reasons, this document will make appropriate adjustments. 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.
For more information, please contact us
The official information and the latest datasheet are available on www.weco.uk.com
This battery unit is equipped with the latest firmware version available.
WeCo will release new firmware to improve the functionalities and battery capabilities.
The latest versions of the firmware are always available free of charge, the battery can be updated by your local installer or writing an
email to wec[email protected] to know the upgrade procedure.
ATTENTION
This battery model is built to be used indoors
The 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, dry,
healthy and tempered

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 6
1 Preface
Thanks for choosing WeCo products. We provide a good, high quality and after sale service.
To protect using staffs and product, please kindly read this manual carefully which provide detailed information for products features,
structures, operate standard, maintenance and troubleshooting.
Special announcement:
This manual can’t be taken as basis of requirement for the manufacturer
Manufacturer hold the final explanation right of this manual.
2 Information in this Manual
2.1 About this Manual
This is the Manual for the -HeSU, is an Installer/ User manual, the installer and the user must refer to the manual guidance to operate
and maintain correctly.
2.2 Use Range
This installation guidance applies only to the -HeSU- LOW VOLTAGE
2.3 Additional Information
Specification of the product can be changed without any notice to customers for the system improvement.
2.4 Symbol Used
Symbols 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：
INFORMATION provides tips that are valuable for optimum installation and operation of the product.

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 7
3 Safety
3.1 Warnings and Notification
Installation environment requirements: -HESU- SERIES 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) If the Installation location does not comply with IP20
may cause failure and the product will not be guaranteed for any related accident or damage.
3.2 Safety Guidelines
CAUTION：
Install and use to avoid short-circuit between the anode terminal and a cathode terminal, all electrical connections on the -HESU-
SERIES work must be operated by qualified professional personnel, when operated in accordance with the expected design -HESU-
SERIES battery will be used as a safe and reliable power supply. In the absence of proper operating conditions, damage, misuse and /
or abuse case, battery box there may be security risks such as overheating or electrolyte smoke potential, users are described in this
section must comply with the safety precautions and warnings. If any of the following precautions is not fully understood or has any
problems, please contact the customer service officer for assistance. The safety part may not include all the regulations in your area.
The use of -HESU- SERIES must review applicable local laws and regulations and the industry standards of the product.
Installation personnel shall not wear watches and other metal items to install operations, in order to avoid short circuits and personal
injuries.
CAUTION：
Due to high weight of -HESU-SERIES, please use original package and do safety protection when second transport.
Please ensure that the battery box in the process of transportation safety, to avoid damage to the product and personnel injury.
4 Product Overviews
4.1 Product Introduction
HESU- SERIES battery box products as the energy storage parts can be used in off-grid & on-grid energy storage system. It is
recommended not to use this device for other than the purpose described in this guidance. The substitute use of this product, random
change, and use of components other than sold or recommended by Manufacturer will nullify the product guarantee. Products also
support the largest group of five parallel battery box connection.

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 8
4.2 Identifying the Product
4.3 Product identification and labels
The nameplate label describes the product parameters and is attached to the product. For details, please refer to the nameplate label
of the product. For safety reasons, the user must have a good understanding of the contents of this manual before install the product
Front Cover
Insulated Supports Front side x2
Battery module
Insulated Supports Back side x2

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 9
5 System Installation
The battery is packed in a carton box, the total weight exceed 52Kg, is mandatory the presence of two persons during the unpacking
operations and preliminary check, and a mechanical lift to carry and handle the modules.
5.1 Installation notice
a) Before installation, check the battery open circuit voltage, do not install with closed circuit
b) Battery installation location should be away from heat and avoid produce spark. The safety distance should be above than 20 m.
c) Battery installing connecting cables should be as short as possible, to prevent excessive line pressure drop.
d) Batteries with different capacity, different P/N or different manufactures are not allowed for connection.
e) Before conducting the battery, the battery positive and negative poles need to be carefully checked as well to ensure correct
installation.
f) The mounting floor should be horizontal.
5.2 Package information and system configuration list
The battery box is packed in cartons, and the components assort with the battery case. When you confirm the goods, please read t
he configuration list carefully to make sure that the battery box and kit are intact.
5.2.1 Configuration list of -HESU- SERIES (BATTERY PARALLEL).
Number
System capacity
-HESU- 5,3
1
Single Battery pack
1
2
Up to 5 units in parallel
5x5.3kWh
3
Up to 5 units per cluster for a total of 25 units
5x5x5,3kWh

WeCo - HeSU UNIVERSAL MODEL 5K3 UNIVERSAL STACKABLE
HeSU 5K3-R20 STACKABLE * HIGH CURRENT V_2.00_2019 Pag. 10
5.2.2 Parts list (Standard Kit 120A).
Number
Name
Quantity
Description
Image
1
Power Cable
2
2x25mm²AWG cable 2.5 (m)
each Red/Black
2
CAN cable RJ45
Parallel Connection
1
100cm
3
Flat Cover
1
Flat Cover for Bus bar
protection in Stackable
configuration
4
Back Side feet Support
2
Steel/Rubber stackable feet
Back Side
5
Front Stackable lid
1
Steel/Rubber Stackable
Cover
6
Earthing Cable Screw
1
M5 Allen key
7
Screw Kit for feet and
front lid
1
8xM8 Allen key Screw, 4xM4
cross Screw
8
BMS/STD
1
1 BMS std Cable 100cm