WIFO eCactus WH-SPA3.68H User manual

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eCactus WH-SPA3.68H/WH-SPA5.0H USER MANUAL
AC-C0UPLED BATTERY ST0RAGE RETR0FIT

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Contents
1.INTRODUCTION.......................................................... 3
1.2 SAFETY & WARNINGS .............................................. 4
1.3 PRODUCT OVERVIEW .............................................. 7
2. INSTALLATION INSTRUCTIONS............................................. 7
2.1 UNACCEPTABLE INSTALLATIONS .................................... 7
2.2 PACKING LIST ..................................................... 8
2.3 MOUNTING ....................................................... 8
2.3.1 SELECT MOUNTING LOCATION ............................... 8
2.4 ELECTRICAL WIRING CONNECTION ................................ 11
2.4.1 BATTERY CONNECTION ..................................... 11
2.4.2ON-GRID & BACK-UP CONNECTION .......................... 13
2.4.3 METER CONNECTION ....................................... 16
2.5 DRED CONNECTION .............................................. 18
3.eCactus ECOS User Manual ............................................... 20
3.1 ECOS APP WIFI CONFIGURATION .................................. 20
3.2 Wifo Monitor CONFIGURATION .................................... 22
4. OTHERS ............................................................... 24
4.1 ERROR MESSAGE AND TROUBLESHOOTING ........................ 24
4.2 DISCLAIMER ...................................................... 29
4.3WARINING QUICK CHECK LIST ..................................... 29
4.4TECHNICAL PARAMETERS AND CERTIFICATES ....................... 31

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1.INTRODUCTION
WH SPA series AC couple inverter is designed for both indoor and outdoor use, which
could be used with or without existing grid-tied inverter systems to store energy with
batteries.
Energy produced from grid-tied inverters shall be used to optimize self-consumption,
then charge battery, exceed power from grid-tied system could export to grid. Loads
will be supported in priority by grid-tied system, then battery power, exceed
consumption power will be drained from grid.
1.1 O P E R A TI ON MO DE S I N T RO DUC T IO N
eCactus WH-SPA system normally has the following operation modes based on your
configuration and layout conditions.

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1.2 SAFETY & WARNINGS
The eCactus series inverters of Jiangsu WH Power Supply Technology Co., Ltd.
(hereinafter called as WH) strictly comply with related safety rules for product
design and testing. Please read and follow all the instructions and cautions on
the inverter or user manual during installation, operation or maintenance, as
any improper operation might cause personal or property damage.

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•SYMBOLS EXPLANATION

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•SAFETY WARNING
Any installation and operation on inverter must be performed by qualified electricians,
in compliance with standards, wiring rules or requirements of local grid authorities
or companies (like AS 4777 and AS/NZS 3000 in Australia).
Before any wiring connection or electrical operation on inverter, all battery and
AC power must be disconnected from inverter for at least 5 minutes to make sure
inverter is totally isolated to avoid electric.
The temperature of inverter surface might exceed 60℃during working, so please
make sure it is cooled down before touching it, and make sure the inverter is
untouchable for children.
Usage and operation of the inverter must follow instructions in this user manual,
otherwise the protection design might be useless and warranty for the inverter will be
invalid.
Do not open inverter cover or change any components without authorization, otherwise
the warranty commitment for the inverter will be invalid.
Appropriate methods must be adopted to protect inverter from static damage. Any
damage caused by static is not warranted by eCactus.
The inverter, with built-in RCMU, will exclude possibility of DC residual current to
6mA, thus in the system an external RCD (type A) can be used(≥30mA).
In Australia, output of backup side in switch box should be labeled ‘Main switch UPS
supply’, the output of normal load side in switch box should be labeled ‘main switch
inverter supply’.

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1.3 PRODUCT OVERVIEW
2. INSTALLATION INSTRUCTIONS
2.1 UNACCEPTABLE INSTALLATIONS

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2.2 PACKING LIST
On receiving the inverter, please check to make sure all the components as below are
not missing or broken.
2.3 MOUNTING
2.3.1 SELECT MOUNTING LOCATION
For inverter’s protection and convenient maintenance, mounting location for inverter

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should be selected carefully based on the following rules:
Rule 1. Inverter should be installed on a solid surface, where is suitable for inverter’s
dimensions and weight.
Rule 2. Inverter installation should stand vertically or lie on a slop by max15°(Pic 1).
Rule 3. Ambient temperature should be lower than 40℃.
Rule 4. The installation of inverter should be protected under shelter from direct
sunlight or bad weather like snow, rain, lightning etc. (Pic 2)
Rule 5. Inverter should be installed at eye level for convenient maintenance.
Rule 6. Product label on inverter should be clearly visible after installation.
Rule 7. Leave enough space around inverter following the values on pic 3.

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2.3.2 MOUNTING
The inverter is suitable for mounting on concrete or other non-combustible surface
Only.

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2.4 ELECTRICAL WIRING CONNECTION
2.4.1 BATTERY CONNECTION
•For lithium battery (pack) the capacity should be 25Ah or larger. Lead acid batteries
are not allowed to use with inverters without authority.Battery cable requirement as
below. (Pic 8).
•Please be careful against any electric shock or chemical hazard.
•Make sure there is an external DC switch (≥50A) connected for battery without
attached DC switch.
Battery wiring connection steps as below:

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*For the compatible lithium batteries connection, please refer to
battery connection part in eCactus-SPA series QUICK INSTALLATION
INSTRUCTIONS.

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•BATTERY PROTECTION DESCRIPTION
Battery will act a protective charge/discharge current limitation under any condition
as below:
•Battery SOC is lower than 1-DOD.
•Battery voltage lower than discharge voltage.
•Battery over temperature protection.
•Battery communication abnormal for lithium battery.
•BMS limitation for lithium battery When charge/discharge current limitation
protection.
•Under on-grid mode, battery charge/discharge operation could be abnormal
Under off-grid mode, Back-Up supply will shut down.
•NOTE:
•Under on-grid mode, battery is protected from over discharge by DOD and
discharge voltage, under off-grid mode, it is protected by only discharge voltage
and DOD.
•The DOD setting of a battery prevents the inverter from discharging battery
reserve power. As soon as the DOD is reached the load of building will only be
supported by either PV power or from the grid. If there are continuous days when
little or no battery charging occurs, the battery may continue to self-consume
energy to support communications with the inverter. This behavior is different
between battery manufactures products, however, if the SOC of the battery reaches
a certain level the inverter will boost the SOC back up. This protection mechanism
safeguards the battery to falling to 0 SOC.
2.4.2ON-GRID & BACK-UP CONNECTION
An external AC switch (≥40A for SPA 3.68H, ≥50A for SPA5.0H) is needed for
On-Grid and Back-Up connection to isolate from grid when necessary. Below
are the requirements on AC switch use.
Note: The absence of AC breaker on Back-Up side will lead to inverter damage
if only electrical short-circuit happened on Back-Up side.

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•Requirement on AC cable connected on On-Grid and Back-Up side:
NOTE:
1. Neutral conductor shall be blue, line conductor black or brown (preferred) and
protective earth bonding line yellow-green.
2. For AC cables, PE cable shall be longer than N & L cables, so that if in any case AC
cable slips or taken out, the protecting earth conductor will be the last to take the strain.

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•On-Grid wiring connection process is as below:
•PE wiring connection process is as below:

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•Connect the inverter and the battery box :
Declaration For Back-Up Loads:
SPA inverter is able to supply a continuous 5000VA output (max 6000VA within
60s) on Back-Up side. And inverter will shut down under full loading with high
ambient temperature if grid is absent.
•For complicated application, please contact WH after-sales service.
Declaration For Back-Up Overload Protection
Inverter will restart itself as overload protection happens. The preparation
time for restarting will be longer and longer (max one hour) if overload protection
incessantly repeats. Take following steps to restart inverter immediately:
•Decrease Back-Up load power within max limitation.
2.4.3 METER CONNECTION
The single-phase meter in eCactus product box is compulsory for eCactus system
installation, used to detect grid voltage and current direction and magnitude, further to
instruct the operation condition of eCactus inverter via RS485 communication.

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•Single-Phase Wiring (Pic 20)

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2.5 DRED CONNECTION
DRED is only for Australian and New Zealand installations, in compliance with Australian
and New Zealand safety requirements. And DRED device is not provided by WH.
Detailed connection of DRED device is shown below:

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•SYSTEM CONNECTION DIAGRAMS
*The neutral continuity is maintained already internally when changing from on-grid to
standalone mode, no need external wiring.
*This inverter includes an integrated residual current device (RCD) .If an external residual
current device (RCD) is used, a device of type A should be used, with a tripping current
of 30 mA or higher.
•shut down and startup procedure
shut down procedure
startup procedure
Step 1: turn off AC Breaker of EPS
Step 2: turn off AC Breaker of Grid
Step 3: turn off DC Breaker of Battery
Step 1: turn on DC Breaker of Battery
Step 2: turn on AC Breaker of Grid
Step 2: turn on AC Breaker of EPS

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3.eCactus ECOS User Manual
3.1 ECOS APP WIFI CONFIGURATION
This document briefs the eCactus ECOS smart monitoring system.
This document is for the end user or customer. If there is any question, you
are always welcomed to contact us.
Web: ecactus.wifopro.com
Email: [e-mail]
Telephone:[phone] (CN)
ECOS APP is the only way to connect and activate your device.