Freedom Won Encore 8K User manual

User Manual
Freedom Won Single Phase Inverters
Encore 8K and Encore 10K
Distributed By Freedom Won (Pty) Ltd
Kimbult Industrial Park, Unit C3 & C4
9 Zeiss Road
Laser Park, Honeydew
2040
South Africa
www.freedomwon.co.za
Technical and Installation Assistance – Contact:
Please contact your Freedom Won Distributor/Reseller or Installer for technical and installation
support. A directory of Distributors and Reseller Installers is available at
www.freedomwon.co.za.
For advanced support please contact [email protected].
Update Record:
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Freedom Won Single Phase Inverters: Encore 8K and Encore 10K Manual Version 0
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Table of Contents
1. Notes on this Manual..................................................................................................................................... 3
1.1. Scope of Validity...................................................................................................................... 3
1.2. Target Group...........................................................................................................................3
2. Introduction ................................................................................................................................................... 3
2.1. Important Safety Instructions .................................................................................................3
1.2 Explanation of Symbols...........................................................................................................7
1.3 Basic features..........................................................................................................................8
1.4 Work Modes..........................................................................................................................10
1.5 Dimensions............................................................................................................................13
2. Interface definition and Technical Data....................................................................................................... 13
2.1 Interface definition ............................................................................................................... 13
2.2 Technical Data.......................................................................................................................14
2.3. Safety and Protection ........................................................................................................... 15
3. Installation ................................................................................................................................................... 15
3.1 Check for Physical Damage ...................................................................................................15
3.2 Packing List............................................................................................................................15
3.3 Tools required for installation. ............................................................................................. 16
3.4 Mounting...............................................................................................................................16
4. Electrical Connection ................................................................................................................................... 18
4.1. PV connection ....................................................................................................................... 18
4.2. Grid Connection (GEN connection).......................................................................................19
4.3. Back-up: Load1 and Load2 Connection..................................................................................19
4.4. Battery Connection ............................................................................................................... 21
4.5. Meter Connection .................................................................................................................24
4.6. WIFI Connection.................................................................................................................... 25
4.7. CT Installation instructions ...................................................................................................25
4.8. Inverter Parallel Configuration Guide ................................................................................... 26
5. LCD Interface and Setting ............................................................................................................................ 30
6. Fault diagnosis and solutions....................................................................................................................... 50

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1. Notes on this Manual
1.1. Scope of Validity
This manual must be referenced together with the Encore Single Phase Inverter installation
and operation. It provides detail important for the assembly, installation, commissioning, and
maintenance of the product. A troubleshooting guide is included to assist with assessing the
types of failures and related remedies.
Please read this manual carefully before operating the product.
The Encore single phase inverter range covers models 8K and 10K.
1.2. Target Group
This manual is for qualified electricians. The tasks described in this manual may be performed
only by qualified electricians.
2. Introduction
2.1. Important Safety Instructions
The following types of safety instructions and general information appear in this document as
described below:
Danger!
•Poses a danger to life due to high voltage.
•All work must be done by a qualified electrician.
•The appliance is not to be used by children, or persons with reduced physical,
sensory, or mental capabilities, or that lack the required experience and
knowledge.
•The appliance must be installed out of reach of children.
Caution!
•Danger of burn injuries due to hot enclosure parts.
•During operation, the enclosure’s upper lid and body may become hot. Only
touch the lower lid during operation.
Caution!
•Possible damage to health because of the effects of radiation!
•Do not stay closer than 20cm to the inverter for extended periods.
Note!
•Grounding the PV generator:
•Comply with the local requirements for grounding the PV modules and the PV
generator. The generator frame and other electrically conductive surfaces
should be connected in a manner that ensures continuous conductivity and
grounding of these items to ensure optimal protection of the system and
persons.
Warning!
•Ensure input DC voltage ≤Max. allowed DC voltage.
•Overvoltage may cause permanent damage to the inverter or other losses,
which will not be included in the warranty!

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Warning!
•Authorized service personnel must disconnect both AC and DC power from the
inverter before attempting any maintenance or cleaning or Risk of electric
shock working on any circuits connected to the inverter.
•Risk of electric shock!
•Adhere to the instructions and requirements of this manual.
•Prior to the application, please read this section carefully to ensure correct and safe
application. Please keep the user manual for continuous reference.
•When operating equipment, in addition to following the precautions in this document,
follow the accepted safety requirements associated with the work being performed.
Freedom Won will not be liable for any consequences of violation of the safety
regulations relating to proper installation and operation of the product.
•Only accessories supplied with the inverter are recommended. Use of other unverified
parts may result in a risk of fire, electric shock, or injury to persons.
•Make sure that existing wiring is in good condition and that wires are not undersized.
•Do not disassemble any parts of the inverter which are not mentioned in the installation
guide. It contains no user-serviceable parts. See the warranty document for
instructions on obtaining service from the manufacturer. Attempting to service the
inverter yourself may result in a risk of electric shock or fire and will void your warranty.
•Do not expose the inverter to flammable or explosive materials.
•The installation location should be free of corrosive substances and humid condensing
air.
•Authorized service personnel must use insulated tools when installing or working with
this equipment.
•PV modules shall have an IEC 61730 class A rating.
•Do not touch either the positive or negative pole of the PV connecting device. Never
touch both at the same time.
•The unit contains capacitors that remain charged to a potentially lethal voltage after
the mains, battery, and PV supply have been disconnected.
•A hazardous voltage will be present for up to 5 minutes after disconnection from the
power supply.
•CAUTION - RISK of electric shock from energy stored in a capacitor, never operate on
the inverter couplers (plugs), the mains cables, battery cables, PV cables, or the PV
generator when power is applied. After switching offthe PV, battery, and mains, always
wait for 5 minutes to let the intermediate circuit capacitors discharge before
unplugging the PV DC, battery connectors, and mains couplers.
•When accessing the internal circuits of the inverter, it is very important to wait 5
minutes before operating the power circuit or removing the electrolyte capacitors
inside the device. Do not open the device beforehand since the capacitors require time
to sufficiently discharge!

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•Surge protection devices (SPDs) for PV installation:
WARNING!
Over-voltage protection with surge arresters should be provided the PV power system
is installed. When The grid connected inverter is not fitted with SPDs in both PV input
and mains input
•Lightning will cause damage either from a direct strike or from surges due to a nearby
strike.
•Induced surges are the most likely cause of lightning damage in majority of installations,
especially in rural areas where electricity is usually provided by long overhead lines.
Surges may originate on both the PV array conductors and the AC cables leading to the
building.
•Specialists in lightning protection should be consulted during the end use application.
•Using appropriate external lightning protection, the effect of a direct lightning strike into
a building can be mitigated, and the lightning current surge can be discharged into the
ground.
•Installation of Surge Protection Devices (SPDs) is recommended to protect the inverter
against mechanical damage and excessive stress. Including a surge arrester in case of
a building with external lightning protection system (LPS) when separation distance is
kept.
•To protect the DC system, SPD type2 should be fitted at the inverter end of the DC
cabling, if the voltage protection level (VP) of the surge arresters is greater than 1100V,
an additional SPD type 3 is required for surge protection for electrical devices.
•To protect the AC system, SPD type2 should be fitted at the main incoming point of AC
supply (at the consumers breaker), located between the inverter and the
meter/distribution system.
•All DC cables should be installed to provide as short a run as possible. Positive and
negative cables of the string or main DC supply should be bundled together. Avoiding the
creation of loops in the system.
•Spark gap devices are not suitable to be used in DC circuits once conducting, they won’t
stop conducting until the impedance voltage across their terminals is typically more than
30 volts.
•Anti-Islanding Effect
Islanding effect is a phenomenon where a grid-connected PV system can still supply power to
the nearby grid when the local grid is off. It is dangerous for maintenance personnel and the
public.
The Encore Single Phase series inverters provide Active Frequency Drift (AFD) to prevent the
occurrence of islanding.

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•PE Connection and Leakage Current
The end-use application shall monitor the protective conductor using the Residual Current
Operated Protective Device (RCD) with rated fault current Ifn≤240mA which automatically
disconnects the device in case of a fault. The device is intended to connect to a PV generator
with a capacitance limit of about 700nf.
WARNING!
High leakage current!
Earth connection essential before connecting supply.
Incorrect grounding can cause physical injury, death or equipment malfunction and increase
electromagnetic interference.
•Make sure that the grounding conductor is adequately sized as required by safety
regulations.
•Do not connect the ground terminals of the unit in series in case of a multiple
installation.
•This product can cause current with a DC component, where a residual current operated
protective (RCD) or monitoring (RCM) device is used for protection in case of direct or
indirect contact, only an RCD or RCM of type B is allowed on the supply side of this
product.
•Do not connect the ground terminals of the unit in series in case of multiple installations.
This product can cause current with a DC component, where a residual current operated
protective (RCD) or monitoring (RCM) device is used for protection in case of direct or
indirect contact, only an RCD or RCM of type B is allowed on the supply side of this
product.
Battery Safety Instructions
The Encore 8K and 10K inverter operate on a “low voltage” battery, for the specific parameters
such as battery type, nominal voltage, and nominal capacity etc., please refer to section 4.
As batteries may contain potential electric shock and short-circuit current danger, to avoid
accidents the following warnings should be observed during battery replacement:
1. Do not wear watches, rings, or similar metallic items.
2. Use insulated tools.
3. Put on rubber shoes and gloves.
4. Do not place metallic tools and similar metallic parts on the batteries.
5. Switch off load connected to the batteries before dismantling battery connection
terminals.
6. Only personal with proper expertise can carry out the maintenance of batteries.

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1.2 Explanation of Symbols
This section explains all the symbols shown on the inverter's type label.
Symbols on the Type Label
Symbol
Explanation
CE mark.
The inverter complies with the requirements of the
applicable CE guidelines.
TUV certified.
The product is compliant with applicable safety and
operating standards.
RCM remark Regulatory Compliance Mark
The product adheres to all safety regulations and is
certified for sales
SAA
certification.
Certified approval for declared and non-declared electrical
equipment that has proven to comply with the safety
requirements of the applicable Australian Standard.
Beware of the
hot surface.
The inverter can become hot during operation.
The danger of
high voltages
Dangerous due to high voltages in the inverter!
Danger Risk of electric shock!
Disposal The inverter cannot be disposed of with household waste.
Disposal information can be found in the enclosed
documentation.
Documentation Observe enclosed documentation
Do not operate Do not operate on this inverter until it is isolated from the
battery, mains, and on-site PV generation supply.
Dangerous due
to high voltage.
There is residual voltage existing in the inverter after power
off, which needs 5 min to discharge.
• Wait 5 min before you open the upper lid or the DC lid.

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1.3 Basic features
The Encore 8K and Encore 10K series inverters is a high-quality inverter range that can:
•Convert solar energy to AC energy,
•Store solar energy in batteries,
•Use battery stored energy to supply the AC output without the grid being available,
•Export excess solar energy to the grid,
•Use the grid to charge batteries if needed,
•Use the grid to support loads directly if needed,
•a fuel generator interface for backup power if needed.
The Encore 8K and 10K series inverters supply single-phase 230V AC output and are designed to
operate optimally on all Freedom Won 52V LiFePO4 batteries using CAN Bus for communication
between the batteries and the inverters.
The Freedom Won battery ranges presently available to operate with these inverters are as follows:
•Freedom Won LiTE Home 52V
•Freedom Won LiTE Marine 52V
•Freedom Won LiTE Business 52V
•Freedom Won eTower e5000
The inverter can be used to optimize the self-consumption of solar energy by storing energy in the
battery for future use. The battery can alternatively be kept fully charged from the grid with PV used
to supply loads and/or to export to the grid.
The operating mode depends on the amount of PV energy installed, the size of the battery system,
or the user’s preference. The inverter can provide power for emergency use during grid outages by
using the energy from both the battery and/or the inverter (using power generated from PV).
The inverter can be configured as per Figure 1.1 with a dedicated Essential Power Supply (EPS) as
well as a grid parallel connection. The EPS provides seamless power to essential loads when the grid
fails by supplying this power from a combination of battery and PV energy sources. The loads
connected to this EPS must not exceed the power rating of the inverter. Larger and less important
loads can be connected to the AC input side of the inverter without being concerned about the
inverter's maximum output power rating. Although these loads will not receive power when the grid
is off, the advantage of this configuration is that any excess PV power can be directed to these loads
when the grid is on, which reduces the demand from the grid. A Current Transformer (CT) (included
with inverter) is used to measure the current at the grid metering point, which allows the inverter to
prevent feeding any excess energy to the grid if grid export is not desired, or not allowed.

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An optional changeover switch is shown in Figure 1.1 to allow diverting the essential loads to the
grid directly, should the inverter need to be taken offline for maintenance.
If the users load exceeds the inverter load rating, then the user must select a larger inverter with
adequate power rating.
Figure 1.1 Typical System Connection Diagram
Note!
•The peak load power must not exceed the rated output power on the Load 1 and
Load 2 connections. The load profile at the premises must be assessed before
selecting the inverter size, or larger loads must be connected on the Load 3
connection point (non-backup). The inverter will shut down with an “overload fault”
if the loads exceed the rated power.
•Comply with the local power utility regulations for grid connected systems.

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1.4 Work Modes
The Encore hybrid inverters provide multiple operating modes based on different requirements.
Operating Mode: Self-consumption or battery cycling
1.When PV, Grid, and Battery are available:
A. Solar provides power to the loads as first priority, if solar
power is sufficient to power all connected loads, solar
power excess will be used to charge the battery, or – if the
battery is fully charged – will feed to non-essential loads or
the grid.
B. Solar provides power to the loads as first priority, if solar
power is not sufficient to support all connected loads,
battery energy will supplement the solar power supplied to
the loads.
C. Solar provides power to the loads as first priority, if solar
energy and battery are not sufficient to power all connected
loads, utility energy (grid) will supply power to the loads
supplemented by the available solar energy.
2.When PV, Battery is available (the grid is disconnected):
A. Solar energy provides power to the loads as first priority, if
solar energy is sufficient to power all connected loads, solar
energy will provide power to charge the battery.
B. Solar energy provides power to the loads as first priority, if
solar energy is not sufficient to power all connected loads,
battery energy and solar energy will supply power to the
loads at the same time.
Operating Mode: Time of Use Scheduling (Peak shift)
1. When PV, Grid, and Battery are available:
A. During battery charge time, solar power will charge the
battery as first priority. The excess power will supply the
loads. If solar power is sufficient to supply loads and charge
the battery, and if there's still some extra energy, then the
excess power will feed the power to non-essential loads
and the grid.
B. During battery charge time, solar energy will charge the
battery as first priority, then the excess solar energy will
supply power to loads. If solar energy is not sufficient to
charge the battery and supply loads, the grid will supply the
connected loads while available solar power charges the
battery.
PV
BAT
GRID
EPS
INVERTER
OPERATING MODE:1A
PV
BAT
GRID
EPS
INVERTER
OPERATING MODE:1B
OPERATING MODE:1C
PV
BAT
GRID
EPS
INVERTER
OPERATING MODE:2A
PV
BAT EPS
INVERTER
OPERATING MODE:2B
PV
BAT EPS
INVERTER
OPERATING MODE:1A
PV
BAT
GRID
EPS
INVERTER
OPERATING MODE:1B
PV
BAT
GRID
EPS
INVERTER