Sonnenbatterie Hybrid 816

Installation instructions | for licensed electricians
sonnenBatterie hybrid 8.1
KD-421 · Part no. 22136 · Version X03 info@sonnen.de · www.sonnen.de

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IMPORTANT
EN ► Read this documentation carefully before installation.
► Retain this document for reference purposes.
Publisher
sonnen GmbH
Am Riedbach 1
87499 Wildpoldsried
Service number +49 8304 92933 444
E-Mail info@sonnen.de
Document
Document number KD-421
Part no. 22136
Version X03
Valid for AU, NZ
Publication date 16/01/2019
2 / 68 KD-421 | Part no. 22136 | EN | X03

Table of contents
Table of contents
1 Information about this document.................................................................6
1.1 Target group of this document............................................................................. 6
1.2 Designations in this document............................................................................ 6
1.3 Explanation of symbols........................................................................................ 6
2 Safety..............................................................................................................7
2.1 Intended Use......................................................................................................... 7
2.2 Requirements for the electrician........................................................................ 7
2.3 Operating the storage system............................................................................ 8
2.4 Product modifications or changes to the product environment.....................8
2.5 Voltage on and in the storage system................................................................8
2.6 Handling the battery modules............................................................................ 9
2.7 Conduct in case of a fire................................................................................... 10
3 Product description......................................................................................11
3.1 Technical data....................................................................................................... 11
3.2 System components.......................................................................................... 13
3.3 The function of the switches............................................................................. 14
3.4 Type plate........................................................................................................... 14
3.5 Symbols on the outside of the storage system................................................15
4 Transport and storage..................................................................................16
4.1 Storage................................................................................................................. 16
4.1.1 Ambient conditions during storage...........................................................16
4.1.2 Storing the battery modules.....................................................................16
4.2 Transport............................................................................................................. 16
4.2.1 Ambient conditions during transport.......................................................16
4.2.2 Transporting battery modules..................................................................17
4.2.3 Inspecting for transport damage..............................................................17
4.2.4 Transport to the installation location......................................................19
4.2.5 Temperature adjustment after transport................................................19
5 Installation...................................................................................................20
5.1 Scope of delivery................................................................................................ 20
5.2 Selecting the installation location.....................................................................21
5.2.1 Requirements for the installation location...............................................21
5.2.2 Observing minimum distances.................................................................21
5.3 Opening the doors of the main cabinet...........................................................21
5.3.1 Opening the door....................................................................................... 21
5.3.2 Removing the cover of the extension cabinet.......................................22
5.3.3 Removing the filter plates....................................................................... 22
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Table of contents
5.4 Mounting the storage system.......................................................................... 23

5.4.1 Using the correct mounting materials....................................................23
5.4.2 Placing the levelling mat or the pedestal...............................................23
5.4.3 Drilling the holes...................................................................................... 24
5.4.4 Mounting the storage system.................................................................25
6 Electrical Installation...................................................................................27
6.1 Working on the electrical distributor................................................................27
6.1.1 Placing components in the distributor.....................................................27
6.1.2 Wiring components in the electrical distributor.....................................28
6.2 Connecting power meters............................................................................... 30
6.3 Connecting the mains line................................................................................ 32
6.4 Connecting the Ethernet line..........................................................................33
6.5 Connecting the Modbus line........................................................................... 34
6.6 Using digital inputs/outputs............................................................................. 35
6.6.1 Connecting the signal line........................................................................35
6.6.2 Using DO self-consumption switch.......................................................37
6.6.3 Using DO min/max SOC........................................................................ 38
6.6.4 Using DI CHP.......................................................................................... 39
6.7 Using accessories................................................................................................ 41
6.7.1 Using heat pump control...........................................................................41
6.8 Installing the battery modules......................................................................... 44
6.8.1 Measuring the battery module voltages.................................................45
6.8.2 Numbering the battery modules............................................................45
6.8.3 Defining the communication addresses................................................45
6.8.4 Setting the termination switches...........................................................46
6.8.5 Positioning the battery modules............................................................46
6.8.6 Connecting the DC lines........................................................................ 47
6.8.7 Connecting the BMS communication line............................................48
6.8.8 Attaching the fuse plugs.........................................................................52
6.9 Mounting filter plates and cover......................................................................52
6.9.1 Mounting filter plates............................................................................... 52
6.9.2 Connecting earthing conductor..............................................................53
6.9.3 Mounting the cover of the extension cabinet.......................................53
6.10 Connecting the photovoltaic system............................................................54
6.10.1 Assembling the PV plug-in connectors................................................54
6.10.2 Connecting the PV system...................................................................55
7 Commissioning.............................................................................................56
7.1 Filling in the type plate...................................................................................... 56
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Table of contents
7.1.1 Taking photos to document installation....................................................56

7.2 Filling in the commissioning report (optional)................................................56
7.3 Switching on the storage system......................................................................57
7.3.1 Closing the door of the main cabinet.......................................................57
7.3.2 Switching on the grid voltage...................................................................57
7.3.3 Switching on the PV disconnector SPV................................................58
7.3.4 Switching on the fuse switch F1..............................................................58
7.4 Running the commissioning assistant..............................................................59
7.4.1 Establishing connection to storage system.............................................59
7.4.2 Establishing connection to storage system............................................59
8 Decommissioning.........................................................................................61
8.1 Switching the storage system off......................................................................61
8.2 Switching the storage system off to electrically isolate it.............................62
9 Troubleshooting...........................................................................................63
10 Uninstallation and disposal.......................................................................64
10.1.1 Uninstallation and disposal......................................................................64
10.1.2 Disposal.................................................................................................... 64
11 Installation photos......................................................................................65
12 Commissioning report (optional)..............................................................67
KD-421 | Part no. 22136 | EN | X03 5 / 68

1 Information about this document
1 Information about this document

This document describes the installation of the sonnenBatterie hybrid 8.1
► Read this document in its entirety before beginning the installation work.
► Keep this document in the vicinity of the sonnenBatterie.
1.1 Target group of this document

This document is intended for licensed electricians.
The actions described here must only be performed by licensed electricians.
1.2 Designations in this document

The following designations are used in this document:
Complete designation Designation in this document

sonnenBatterie hybrid 8.1 Storage system
1.3 Explanation of symbols
DANGER
DANGER Extremely dangerous situation leading to certain death or serious injury if the
safety information is not observed.
Dangerous situation leading to potential death or serious injury if the safety

WARNING
WARNING information is not observed.
CAUTION
CAUTION Dangerous situation leading to potential injury if the safety information is not
observed.
Notice
Notice Indicates actions that may cause material damage.
Important information not associated with any risks to people or property.
Symbol Meaning
► Work step
1. 2. 3. … Work steps in a defined order
• List
Table 1: Additional symbols
6 / 68 KD-421 | Part no. 22136 | EN | X03

Safety 2
2 Safety
2.1 Intended Use

The sonnenBatterie hybrid 8.1 is a battery storage system which can be used to
store electrical energy. Improper use of this system poses a risk of death or injury
to the user or third parties as well as damage to the product and other items of
value.
The following points must therefore be observed in order to comply with the
intended use of the product:
• The storage system must not be installed in any kind of combination.
• The storage system must be fully installed in accordance with the installation
instructions.
• The storage system must be installed by an licensed electrician.
• The storage system is only allowed to be operated with PV generators of Class A
rating according to IEC 61730.
• The storage system must only be used at a suitable installation location.
• The transport and storage conditions must be observed.
Especially the following uses are not permissible:
• Operation in flammable environments or areas at risk of explosion.

• Operation in locations at risk of flooding.
• Operation outdoors.
• Operation of the battery module outside of its storage system.
Failure to comply with the conditions of the warranty and the information
specified in this document invalidates any warranty claims.
2.2 Requirements for the electrician

Improper installation can result in personal injury and/or damage to components.
For this reason, the storage system must only be installed and commissioned by
licensed electricians. Licensed electricians must meet the following criteria:
• The electrician must be a person with technical knowledge or sufficient
experience to enable him/her to avoid dangers which electricity may create.
• The electrician must has successfully completed the sonnen Australia installer
training and have valid installer accreditation at the time of installation.
KD-421 | Part no. 22136 | EN | X03 7 / 68

2 Safety
2.3 Operating the storage system

Incorrect operation can lead to injury to yourself or others and cause damage to
property.
• This device can be used by children from the age of eight (8) years old and
individuals with impaired physical, sensory or mental capabilities or individuals
with limited knowledge and/or experience of working with the device, as long as
they are supervised or have been trained to safely use the device and understand
the resulting risks of doing so. Children must not play with the device. Cleaning
and user maintenance must not be carried out by children without supervision.
• The storage system must only be operated as described in the product
documentation.
2.4 Product modifications or changes to the product

environment
• Only use the storage system in its original state – without any unauthorised
modifications – and when it is in proper working order.
• An appropriate and readily accessible disconnect device shall be incorporated in
the fixed wiring.
• Safety devices must never be overridden, blocked or tampered with.
• The interfaces of the storage system must be wired in accordance with the
product documentation.
• All repairs on the storage system must be performed by authorised service
technicians only.
• The replacement of battery modules must be performed by authorised service
technicians only. When replacing batteries, replace with the same type and
number of batteries or battery modules.
2.5 Voltage on and in the storage system

The storage system contains live electrical parts, which poses a risk of electrical
5 min shock. The storage system inverter also contains capacitors which carry voltage
even after the storage system is switched off.

The PV generator of the PV system is directly connected to the storage system
through the plug-in connectors on the top side of the storage system. This means,
there is voltage present on the PV plug-in connectors when the PV system
generates electricity, even if the storage system has been switched off to
8 / 68 KD-421 | Part no. 22136 | EN | X03

Safety 2
electrically isolate it.

Therefore:
► Switch off the storage system to electrically isolate it (see 8.2 – p. 62).
Only then can the storage system be opened.
2.6 Handling the battery modules

The battery modules installed in the storage system are protected by multiple
protective devices and can be operated safely.
Despite their careful design, the battery cells inside the battery modules may
corrode or experience thermal runaway in the event of mechanical damage, heat or
a fault.
This can have the following effects:
• High heat generation on the surface of the battery cells.
• Electrolyte may escape.
• The escaping electrolyte may ignite and cause an explosive flame.
• The smoke from burning battery modules can irritate the skin, eyes and throat.
Therefore, proceed as follows:
► Do not open the battery modules.
► Do not mechanically damage the battery modules (pierce, deform, strip down,
etc.)
► Do not modify the battery modules.
► Do not allow the battery modules to come into contact with water (except
when extinguishing a fire in the storage system).
► Do not heat the battery modules. Operate them only within the permissible
temperature range.
► Keep the battery modules well away from sources of ignition.
► Do not short-circuit the battery modules. Do not allow them to come into
contact with metal.
► Do not continue to use the battery modules after a short circuit.
► Do not deep-discharge the battery modules.
In the event that module contents are released:

► Do not enter the room under any circumstance.
► Avoid contact with the escaping electrolyte.
► Contact the fire services.
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2 Safety
2.7 Conduct in case of a fire

Fire may occur with electrical equipment despite its careful design. Likewise, a fire
in the vicinity of the equipment can cause the storage system to catch fire,
releasing the contents of the battery modules.
In the event of a fire in the vicinity of the product or in the storage system itself,
proceed as follows:
Only firefighters with appropriate protective equipment (safety gloves, safety
clothing, face guard, breathing protection) are permitted to enter the room where
the burning storage system is located.
There is a danger of electrocution when extinguishing fire while the storage system
is switched on. Therefore, before starting to extinguish the fire:
► Switch off the mains fuses in the building.
If the storage system and/or mains fuses cannot be safely switched off:
► Observe the minimum distances specified for the extinguishing agent used.
The storage system works with an output voltage of 400 V (AC) and is therefore
considered a low-voltage system. However, the voltage of the PV system that is
connected to the storage system (through the PV connectors on the top of the
storage system) can be up to 1,000 V (DC).
► A storage system fire can be extinguished using conventional extinguishing
agents.
► Water is recommended as an extinguishing agent in order to cool the battery
modules and therefore prevent thermal runaway in battery modules which are still
intact.
Information on the battery modules:

• The battery modules have a nominal voltage of 51.2 V (DC) and therefore fall
into the range of protected extra-low voltage (under 60 V DC).
• The battery modules do not contain metallic lithium.
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Product description 3
3 Product description
3.1 Technical data

sonnenBatterie hybrid 8.1-5.5 8.1/6 8.1/8 8.1/10 8.1/12 8.1/14 8.1/16
AC output
Nominal voltage 400 V
Nominal frequency 50 Hz
Nominal power 5,500 W
Nominal current 8A
Charging / Discharging power 3,000 W 3,300 W
Charging / Discharging current 4.5 A 4.8 A
Power factor range 0.9 cap. … 0.9 ind.
Current (Max. continuous) 8A
Max. output fault current 120 mA
Inrush current 0A
Mains connection three-phase, L1 / L2 / L3 / N / PE
Max. ext. overcurrent protecton 16 A, 3ph
Mains topology TN / TT
Mains connection fuse Miniature Circuit Breaker | Type B | 10 A - 16 A
Photovoltaic (PV) input

Number of PV inputs / MPP Tracker 1
Min. input voltage 250 V
Max. input voltage 1,000 V
MPP voltage range 250 V … 800 V
Max. input power 5,620 W
Max. recommended nominal power 6.4 kWp
of the PV system
Max. input current 11 A
Backfeed current to array 0A
Short-circuit current (ISC) 15 A
Battery (DC)
Cell technology lithium iron phosphate (LiFePO4)
Usable capacity 6.0 kWh 8.0 kWh 10.0 kWh 12.0 kWh 14.0 kWh 16.0 kWh
Nominal voltage 51.2 V
Current (Max. continuous) 75 A
Short-circuit current (ISC) 80 A
Min. number of battery modules 3
Max. number of battery modules 8
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sonnenBatterie hybrid 8.1-5.5 8.1/6 8.1/8 8.1/10 8.1/12 8.1/14 8.1/16
Safety
Protection class I / PE conductor
Required fault current monitoring Residual current device (RCD) | Type B | 30 mA
Degree of Protection IP30
Rated short-time withstand 10 kA
current (ICW)
Separation principle no galvanic isolation, transformer-less
Dimensions / weight with small extension cabinet (from 6 kWh up to 10 kWh)

Dimensions (H/W/D) in cm 137/67/23 - - -
Weight in kg 133 160 187 - - -
Dimensions / weight with big extension cabinet (from 6 kWh up to 16 kWh)

Dimensions (H/W/D) in cm 187/67/23
Weight in kg 144 171 198 225 252 279
Power meter
Voltage measurement inputs Nominal voltage (AC): 230 V (L-N), 400 V (L-L) |
max. connectible conductor cross-section: 1.5 mm2
Clamp-on current transformer Max. measurable current: 60 A (standard), optional up to 400 A
Ambient conditions
Environment indoor (conditional)
Ambient temperature range 5 °C … 30 °C
Storage temperature range 0 °C … 40 °C
Transport temperature range -15 °C … 40 °C
Max. rel. humidity 90 %, non-condensing
Permissible installation altitude 2,000 m above sea level
Pollution degree 2
Additional ambient conditions • The installation location must not be at risk of flooding.
• Installation room should be ventilated.
• The currently applicable building codes must be observed.
• Even floor, suitable for heavy loads.
• Observe fire control standards.
• Free from corrosive and explosive gases (ammonia content max. 20 ppm).
• Free from dust (especially flour dust or sawdust).
• Free from vibrations.
• Free access to the installation location.
• No direct sunlight.
Table 2: Technical data
12 / 68 KD-421 | Part no. 22136 | EN | X03

3.2 System components
The inverter of the storage system is retrofittable for the connection of an

external Demand Response Enabling Device (DRED)1 in order to support
Demand Response Mode Zero (DRM 0).
2
1 XAC SPV
XDIO
XSO1
S1
S1
F1
XPVP
XPVM
XSO2
XRE1 XSO3
XETH
XSO4 F1
XMOD
3
Figure 1: System components of the storage system
No. Designation Function

1 Filter plate Holder for filter pad.
2 Inverter Conversion of batteries’ direct current into alternating
current.
3 Battery module Storage of electrical power.
F1 Fuse switch F1 On / Off switch of the storage system.
S1 Switch S1 Pressed during the switch-on procedure.
SPV PV disconnector Switch to isolate all poles of the DC connection
between the photovoltaic system and the inverter.
XAC Mains connection Connection to the public electrical supply network.
XPVP PV plus connection Connection to the plus wire from the photovoltaic
system.
XPVM PV minus connection Connection to the minus wire from the photovoltaic
system.
XDIO Digital inputs and Interface to emit and receive digital signals.
outputs
XSO1 USB port Port for connection of an Z-Wave USB stick.
XSO2 Modbus port Data connection to power meter.
XSO3 Ethernet port Data connection to router for home network.
XSO4 Reserve opening.
Table 3: Description of system components
1 Set ‘Retrofitting DRED port’ is available from sonnen GmbH.
KD-421 | Part no. 22136 | EN | X03 13 / 68

3.3 The function of the switches

PV disconnector (SPV)
1 The PV disconnector (SPV) is in the

DC circuit between the PV system (1)
and the inverter (3).
SPV
I
In switch setting I the PV system and

0
2 the inverter are connected together.

In switch setting 0 the PV system and
3 the inverter are isolated from one
6
off off off
another on all poles.

F1
4 Fuse switch F1
The fuse switch F1 is in the DC circuit

5
between the battery (6) and the
inverter (3).
Figure 2: Block diagram of the switching In switch setting ON the battery and
elements
the inverter are connected together.
1 PV system In switch setting OFF the battery and
2 Storage system
the inverter are isolated from one
3 Inverter
another.
4 AC circuit breaker
5 Mains connection AC circuit breaker
6 Battery
F1 Fuse switch The circuit breaker (4) is in the AC
SPV PV disconnector circuit between the public electricity
network (5) and the storage system (2).
3.4 Type plate

The type plate for the storage system is located on the outer surface of the system.
The type plate can be used to uniquely identify the storage system. The
information on the type plate is required for the safe use of the system and for
service matters.
The following information is specified on the type plate:
• Item designation
• Item number
• Technical data of the storage system
14 / 68 KD-421 | Part no. 22136 | EN | X03

The nominal power and battery capacity of the storage system differ depending on
the number of battery modules installed. For this reason the nominal power and
battery capacity must be entered on the type plate by the electrician installing the
system.
3.5 Symbols on the outside of the storage system

Symbol Meaning
Warning: flammable materials.
Warning: hazards due to batteries.
Warning: electrical voltage.
Warning: electrical voltage. Wait five minutes after switching

5 min off (capacitor de-energising time).
Warning: product is heavy.
kg
Warning: Equipment with multiple sources of supply (PV

generator, AC mains and battery).
CE mark. The product meets the requirements of the

applicable EU directives.
WEEE mark. The product must not be disposed of in

household waste; dispose of it through environmentally
friendly collection centres.
Observe the documentation. The documentation contains

safety information.
KD-421 | Part no. 22136 | EN | X03 15 / 68

4 Transport and storage
4.1 Storage
Storage describes the condition when the storage system is not connected to the
public electrical mains and the battery modules cannot be automatically charged.
DANGER
4.1.1 Ambient conditions during storage
WARNING The ambient conditions specified in section 3.1 (p. 11) must be observed during
storage.
CAUTION
4.1.2 Storing the battery modules
Deep-discharge of the battery modules

Notice
Destruction of the battery modules!
► Do not disconnect the storage system from the public grid for long periods of
time.
► Never continue to operate battery modules which have been deep-discharged.
During storage the battery modules automatically discharge at a minimal level.

Deep-discharge could damage or destroy the battery modules. For this reason, the
battery modules can only be stored for a limited amount of time.
Observe the following points:
• The battery modules must be charged to 85% (charging status upon delivery)
when stored.
• Store the battery modules for no longer than 6 months.
• Install the battery modules in the storage system after 6 months at the most and
commission the storage system.
• During storage the orange fuse plug must not be plugged into any battery
module.
4.2 Transport
4.2.1 Ambient conditions during transport

The ambient conditions specified in section 3.1 (p. 13) must be observed during
transport.
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DANGER
Transport and storage 4
WARNING 4.2.2 Transporting battery modules
Improper transport of battery modules

CAUTION
Fire outbreak at battery modules or emission of toxic substances!
► Transport the battery modules in their original packaging only. If you no longer
Notice have the original packaging, new packaging can be requested from sonnen GmbH.
► Never transport damaged battery modules.
Lithium-ion batteries are hazardous goods. Therefore the following points must be
observed when transporting the battery modules:
► Observe the general transport regulations based on the mode of transport as
well as all legal regulations.
► Consult an external hazardous goods expert.
The battery module data relevant for transport is provided in the following:
• Hazardous goods class: 9
DANGER • UN number: UN3480 ‘lithium-ion batteries’
• Battery module mass (including packaging): 29 kg
WARNING 4.2.3 Inspecting for transport damage
Use of damaged battery modules

CAUTION
► Unpack the battery modules immediately after transport and inspect them for
Notice transport damage.
DANGER If damage (Deformation, damage to the housing, emission of substances and the
like) is discovered:
► Do not use the battery modules under any circumstance.
WARNING ► Notify the service team.
Insulation fault when storage system is damaged

CAUTION
Danger of electric shock when touching damaged insulation elements!
► Unpack the storage system immediately after transport and inspect it for
Notice transport damage.
► Do not use a damaged storage system under any circumstance.
The shipping company can only be held liable for transport damage if it can be
proven that the damage occurred during the course of transport. For this reason it
is important to follow the instructions given here as closely as possible.
Transport damage is divided into open and hidden damage. Open damage is
externally visible damage to the transported goods or their packaging. Hidden
KD-421 | Part no. 22136 | EN | X03 17 / 68

damage occurs when the packaging is not damaged but the transported goods
inside are.
Open transport damage must be reported to the shipping company immediately.
The following time frames apply in the case of hidden transport damage:
• Deutsche Post / DHL / parcel services: report damage within 24 hours
• Shipping company: report damage within 7 days
Proceed as follows:
1. Check the shipping documents

► Check the recipient address and numbers of shipped goods in the presence of
the shipper.
2. Inspect the goods for open damage

► Inspect the packaging and transport goods for external damage in the presence
of the shipper.
► Check the transport indicator
affixed to the packaging of the main
cabinet in the presence of the shipper.
Figure 3: Transport indicator affixed to the packaging
The storage system has not been transported properly if blue powder has been
transferred into the arrow of the transport indicator.
► Refuse to accept the goods if blue powder has been transferred into the arrow
of the transport indicator.
3. Inspect the goods for hidden damage

This inspection should also take place in the presence of the shipper if possible.
► Unpack the goods.
► Inspect the goods for hidden (not immediately visible) transport damage.
If transport damage is discovered:
► Stop unpacking the product.
► Collect photographic evidence of the damage.
► Refuse to accept the goods if the discovered defects are serious.
4. Document the defects

► Document the defects identified on the consignment note. The documentation
should include the following:
• Notation ‘Conditional acceptance’
• Registration number of the delivery vehicle
• Signature of the shipper
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Transport and storage 4
5. Report the damage

► Report the damage to the responsible transport company and the manufacturer
immediately.
► Send the consignment note/delivery note with the shipper's confirmation of the
damage and photographic evidence to the manufacturer by email.
Damage claims cannot be settled if the above mentioned documentation is not

submitted within the stated reporting time frames.
DANGER
4.2.4 Transport to the installation location
High weight of the storage system

WARNING
Risk of injury by lifting/dropping the storage system!
DANGER
CAUTION ► Wear safety footwear when setting up.
► Ensure a secure footing.
WARNING
Notice
► At least two people are necessary to carry the main cabinet of the storage
system.
CAUTION
4.2.5 Temperature adjustment after transport
Forming of condensation
Notice
Damage to the storage system!
► Check the inside of the storage system for condensation before installation.
► Only install the storage system if there is no condensation on the surfaces.
If the temperature of the storage system is lower than the ambient temperature of
the room when it is delivered, condensation may form inside the storage system.
If the storage system has been transported in sub-zero temperatures, proceed as

follows:
1. Set up the storage system in a suitable location.
2. Open all main cabinet doors.
3. Leave the storage system to stand for at least 24 hours with open main cabinet
doors.
4. Only then can you commission the storage system.
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5 Installation
5 Installation
5.1 Scope of delivery

► Check the following scope of delivery to ensure it is complete.
A 1 2 3 4 6 8
A1 A2 1x
7
1x
1x 1x 1 2
KSW
3
1x Installationsanleitung sonnenBatterie eco 8.0
– für Elektrofachkräfte –
1x
+49 (0) 83 04 / 92 93 3 - 444 · i nf o@ so nn e n ba tte ri e .de · w ww.so n ne n b att er ie .d e
12 11 5 1x 10 9
K
L
K
L
L
1x
1x 1x Installationsanleitung sonnenBatterie eco 8.0
– für Elektrofachkräfte –
1x
+49 (0) 83 04 / 92 93 3 - 444 · i nf o@ so nn e n ba tte ri e .de · w ww.so n ne n b att er ie .d e
3x
1 2 3 4 5
B 1x 1x 1x
1x
1x
C 2 D 2 E
1
1 1x 1x
3 4 3 4
1
2x 2x 2x 2x
1x
5 5
2x 2x
1x 1x
Figure 4: Scope of delivery
A Scope of delivery for main B Scope of delivery for battery C Scope of delivery for big extension
cabinet module cabinet
1 Main cabinet 1 Battery module 1 Big extension cabinet
2 Numbering for battery modules 2 Fuse plug 2 Levelling mat
3 RJ-45 coupling 3 BMS communication line 3 Locking nut
4 Power meter WM 271 4 DC line red 4 Contact disc
5 Modbus line 5 DC line black 5 Edge protection
6 Current transformer KSW60-3
7 Mains line D Scope of delivery for small E Scope of delivery for Pedestal
8 Installation instructions extension cabinet (optional)
9 Operating instructions 1 Small extension cabinet 1 Pedestal
10 Miniature Circuit Breaker B16 2 Levelling mat
11 PV plug-in connector minus 3 Locking nut
12 PV plug-in connector plus 4 Contact disc
5 Edge protection
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Installation 5
5.2 Selecting the installation location
5.2.1 Requirements for the installation location
► Observe the required ambient conditions (see section 3.1 - p. 11).
5.2.2 Observing minimum distances

5 cm ► Observe the specified minimum
15 cm distances to neighbouring objects.
The minimum distances ensure that:
• there is sufficient heat dissipation,
• the storage system door can be
opened easily and
• there is sufficient space for
maintenance work.
50 cm 100 cm
Figure 5: Minimum distances
5.3 Opening the doors of the main cabinet
5.3.1 Opening the door
► Remove the two Allen screws on the

left side of the main cabinet.
► Open the door of the main cabinet.
Figure 6: Opening the door of the main

cabinet
KD-421 | Part no. 22136 | EN | X03 21 / 68

5 Installation
5.3.2 Removing the cover of the extension cabinet

To remove the cover of the extension
cabinet:
► Remove the three screws.
► Slide the cover up.
Figure 7: Removing the cover of the

extension cabinet
5.3.3 Removing the filter plates

The filter plates of the main and
1
extension cabinet can be removed.
Removing them makes it easier to
install the battery modules later.
► Remove the nuts (2) inside the main
2
and extension cabinet.
► Slide the covers up (1) and take off
the cover and place it to the side.
Figure 8: Removing the filter plates
22 / 68 KD-421 | Part no. 22136 | EN | X03

WARNING
Installation 5
CAUTION 5.4 Mounting the storage system
At least three battery modules (6 kWh) are required to operate the storage
Notice
system. This means the sonnenBatterie hybrid 8.1 needs to be mounted with an
extension cabinet (big or small).
The main cabinet of a storage system with extension

cabinet must be wall mounted. The extension
cabinet must be floor mounted and secured against
tilting.
Figure 9: Storage system with

extension cabinet
5.4.1 Using the correct mounting materials

► Use only screws with the following properties:
• Screw diameter: 8 mm
8 mm max. 15 mm
• Screw head diameter: max. 15 mm
max. 6 mm • Hight of screw head: max. 6 mm
Figure 10: Parameters of the screw used
The screw lengths and the wall plugs used must be suitable for the nature of the
wall.
5.4.2 Placing the levelling mat or the pedestal
The levelling mat (1) is part of the scope of delivery for the extension cabinet. It is
used to compensate uneven floors. Alternatively the extension cabinet can be
placed on an optional pedestal (3) instead of the levelling mat. This is helpful if the
extension cabinet doesn’t meet flush with the wall (e.g. because a skirting board (2)
is mounted).
1 2 3 ► Place the levelling mat (1) or the
pedestal (3) at the preferred installation
location.
Figure 11: Levelling mat or pedestal
KD-421 | Part no. 22136 | EN | X03 23 / 68

5 Installation
5.4.3 Drilling the holes

Holes must be drilled into the wall to mount the storage system. The arrangement
of the holes depends on whether the big or the small extension cabinet is used.
A drilling template is part of the packaging of the main cabinet. Therewith it is

easier to mark the position of the holes on the wall. Please note that the drilling
template does not consider the levelling mat or the optional pedestal!
With small extension cabinet (up to 10 kWh)

524 For storage systems consisting of main
A and small extension cabinet:
626
► Note that the storage system must
526
226
33 be placed on the levelling mat or the
1316
B pedestal (C).
916
723
690
► Drill the holes shown in red in figure
656
256
on the left.
A Main cabinet
C
B Small extension cabinet
Figure 12: Drill template for storage C Levelling mat (height: 10 mm)
systems with small extension cabinet or pedestal (optional, height:
(figure is not to scale – all specifications are 80 mm)
in millimetres)
With big extension cabinet (up to 16 kWh)

524 For storage systems consisting of main
A and big extension cabinet:
626
► Note that the storage system must

526
226
33 be placed on the levelling mat or the

B pedestal (C).
1802
► Drill the holes shown in red in figure

1402
1209
1176
1142
on the left.
402
A Main cabinet
B Big extension cabinet
C C Levelling mat (height: 10 mm)

Figure 13: Drill template for storage or pedestal (optional, height:
systems with big extension cabinet (figure 80 mm)
is not to scale – all specifications are in
millimetres)
24 / 68 KD-421 | Part no. 22136 | EN | X03

Installation 5
5.4.4 Mounting the storage system
1 Mount the extension cabinet
The extension cabinet needs to be

mounted on the wall to be secured
against tilting.
► Mount the extension cabinet on the
wall using suitable screws and dowels
(see 5.4.1 – p. 23).
Figure 14: Screwing on the extension

cabinet
2 Apply the screws
There are keyhole attachments on the rear of the main cabinet. The main cabinet is
mounted using these attachments.
2 mm ► Apply suitable screws and anchors
(see 5.4.1 – p. 23) to the previously
drilled holes.
The screw should not be completely
Figure 15: Distance between screw head
screwed in. The screw head should
and wall
protrude from the wall by approx.
2 mm.
3 Affix edge protection

1. Edge protection needs to be attached
to the openings in the floor of the main
cabinet.
► Affix the edge protection on both
openings in the floor of the main
cabinet.
Figure 16: Affix the edge protection
KD-421 | Part no. 22136 | EN | X03 25 / 68

5 Installation
4 Mount the main cabinet
► Hang the main cabinet on the

previously mounted screws.
Figure 17: Mounting the main cabinet
5 Tighten the screws
► Tighten the five screws.
Figure 18: Tightening the screws on the

main cabinet
6 Connect the housing
An earth conductor is already

connected in the extension cabinet.
► Connect the other end of the earth
conductor to the earth bolt in the main
cabinet.
► Tighten the self-locking nut with a
torque of 5 Nm.
Figure 19: Connecting the housing
26 / 68 KD-421 | Part no. 22136 | EN | X03

Electrical Installation 6
6 Electrical Installation
Electrical work on the storage system and electrical distributor
DANGER
Danger to life due to electrocution!
DANGER
WARNING ► Disconnect the relevant electrical circuits.
WARNING ► Secure against anyone switching on the device again.

CAUTION ► Wait five minutes so the capacitors can discharge.
► Check that the device is disconnected from the power supply.
CAUTION ► Only licensed electricians are permitted to carry out electrical work.
Notice
Observe the maximum line lengths
Notice
► None of the lines connected to the storage system (electrical power, Ethernet
line, Modbus line, other data lines, etc.) are allowed to exceed a maximum length
of 30 m.
6.1 Working on the electrical distributor
Touch voltage in the event of fault

DANGER
► Install residual current device (RCD | Type B | I∆n = 30 mA) upstream of the
WARNING storage system.
CAUTION 6.1.1 Placing components in the distributor

Several components must be placed in the electrical distributor for the electrical
Notice connection of the storage system. Approx. 25 cm of free space on a mounting rail
is required for placing the components.
► Place the following components in the electrical distributor:
1 2 3 4
A1 A2 N L1 L2 L3
123
Figure 20: Components to be placed in the distributor
KD-421 | Part no. 22136 | EN | X03 27 / 68

1 Miniature circuit breaker B10, B13 or B16

2 Power meter WM 271
3 Transformer interface
4 Residual current device (RCD) | Type B | 30 mA (not included in scope of delivery)
Explanations for the components:
• The miniature circuit breaker (1) protect the mains line of the storage system.
• The power meter (2) and the transformer interfaces (3) are used to measure the
consumption and generation of power in the building.
• The inverter of the storage system can cause a current with DC components. The
RCD (4) protects against high touch voltage in the event of a fault. A RCD Type
B with a rated differential current of 30 mA must be installed.
6.1.2 Wiring components in the electrical distributor

► Wire the components previously placed in the electrical distributor like it is
shown in Figure 21 (see p. 29).
28 / 68 KD-421 | Part no. 22136 | EN | X03

1
6
2 L1 L2 L3 N PE
123
1 8
3 2
4 3
5 BN BK GY BU GNYE
A1 A2 9
N L1 L2 L3
11
12
10
kWh 3~
14
L1 L2 L3 N PE
13
Figure 21: Circuit diagram overview – electrical connection
1 Consumers in building 8 Storage system

2 Transformer interface for consumption (A2) 9 Miniature circuit breaker B16
3 Current transformer for consumption – L1 10 RCD | Type B | 30 mA
4 Current transformer for consumption – L2 11 Miniature circuit breaker2
5 Current transformer for consumption – L3 12 Power meter WM271
6 Mains line 13 Public electrical mains
7 Mains connection socket XAC 14 Bidirectional counter
2 Protection of the line must be ensured.
KD-421 | Part no. 22136 | EN | X03 29 / 68

6.2 Connecting power meters

► Connect the power meter as shown in figure 21 (p. 29).
The following points must be observed when connecting the power meters:
1 A2 – input for consumption
1 2
2 Voltage measurement terminal strip
A1 A2 N L1 L2 L3
3 Power meter
5 3
4 Modbus terminal strip
5 Transformer interface for consumption
4 6 Clamp-on current transformer for

123 consumption – L1
1
7 Clamp-on current transformer for
6 2 consumption – L2
7 3 8 Clamp-on current transformer for

consumption – L3
8
Figure 22: Power meter components
• Never confuse inputs A1 and A2!
• The lines connected to the voltage measurement terminal strip (3) must be
protected by suitable miniature circuit breakers. Additional miniature circuit
breakers do not have to be installed if the lines are already protected in
accordance to the relevant, currently applicable regulations and standards.
• The clamp-on current transformers
are clamped across the affected lines.
The energy flow direction of the
clamp-on current transformer must
K K be observed.
L L The energy flow in the line must run
from K to L.
Figure 23: left: Correct energy flow

direction / right: Incorrect energy flow
direction
30 / 68 KD-421 | Part no. 22136 | EN | X03

• Do not confuse the phases!

L1 L2 L3 Power measurement only works if the
KS
current and voltage of the same 1 2 3
123 phase are measured.

1
Example: clamp-on current
transformer L1 (marked with number
2 1) must be connected to phase L1.
3 This phase L1 must also be connected
to terminal L1 of the voltage
measurement terminal strip. Only
L1 L2 L3 then can the correct power for phase

L1 be determined.
123
1
Figure 24: Connecting the clamp-on

current transformers: incorrect (top) and
correct (bottom)
KD-421 | Part no. 22136 | EN | X03 31 / 68

6.3 Connecting the mains line
Electrical work on the storage system and electrical distributor

DANGER
► Switch off the storage system (see 8.2 – p. 62).

► Secure against anyone switching on the device again.

► Only licensed electricians are permitted to carry out electrical work.
Notice
► Connect the wires for the mains line as shown in Figure 21 (p. 29). Make sure
that the mains line’s coloured wires are correctly connected.
L1 = BN
L2 = BK
L3 = GY
N = BU
PE = GNYE
Figure 12: The assignments of the coloured wires in the mains line
► Connect the socket (4) of the public network to the (XAC) connection on the
storage system. Ensure that the stickers (1) and (2) face upwards.
► Close the lock (3).
1 2 3
4
XAC
Figure 25: Connection of the mains line to the connection socket
1, 2 Sticker 3 Lock
4 Mains connection plug XAC Mains connection socket
32 / 68 KD-421 | Part no. 22136 | EN | X03

6.4 Connecting the Ethernet line

► Use a patch cable with the following properties as the Ethernet cable:
• the Patch cable is Cat 6,
• the Patch cable is shielded.
► Connect the patch cable (1) as it is shown in the following figure.
► Connect the other end of the Ethernet cable to the router of the home
network (2).
XS03
Figure 26: Connecting the Ethernet line
1 Patch cable (not included in scope of delivery)

2 Home network router
XSO3 Ethernet port
Upon commissioning, the storage system automatically establishes the connection

to the internet once the patch cable has been correctly connected.
If the connection to the internet is not automatically established after

commissioning:
► Follow the instructions in section 9 (see p. 63).
KD-421 | Part no. 22136 | EN | X03 33 / 68

6.5 Connecting the Modbus line

Measurement data is transmitted from the power meter to the storage system
using the Modbus line.
It is essential to ensure that a screened patch cable is used and that the screen of
the Modbus line is earthed in order to ensure optimal data transmission.
► Use a patch cable with the following properties as the Modbus cable:
• the Patch cable is Cat 6,
• the Patch cable is shielded.
► Earth the screen (5) of the Modbus line for the power meter3.
► Connect the patch cable (1) as it is shown in the following figure.
1
2
A1 A2 13 14 15 16
1 2 3 4 5 6 7 8
XSO2
6 5
Figure 27: Connecting the Modbus line
1 Patch cable (not included in scope of delivery)

2 Power meter
3 Modbus terminal strip
4 Jumper for Modbus termination
5 Connection of the shield to the grounding system
6 Modbus line (A- = white/blue | B+ = blue | GND = brown)
7 RJ-45 coupling
XSO2 Modbus port
If there is no jumper (4) installed between the pins 6 and 8 on the plug of the
Modbus terminal strip (3):
► Install a jumper (4) between pins 6 and 8 on the Modbus terminal strip (3)
connector.
3 Install the supplied screen clamp for this purpose as described in the provided instructions.
34 / 68 KD-421 | Part no. 22136 | EN | X03

6.6 Using digital inputs/outputs
Electrical work on the storage system

DANGER
DANGER Danger to life due to electrocution!

CAUTION ► Check that the device is disconnected from the power supply.
Notice
Overvoltage when switching off electromagnetic relays
Notice
Damage to components!
► Only use electromagnetic relays with a protective circuit (e. g. with a free-
wheeling diode) or semiconductor relays.
The wiring configurations described in this section are examples only and serve as
a guide for electricians working on the system.
The wiring configurations are not universal. The electricians working on the system
are responsible for the correct wiring of the system.
In some cases, the permission of the distribution grid operator or power supply
company may be required.
External components (terminals, contactors, relays, etc.) needed to wire up the

digital inputs/outputs are not supplied.
6.6.1 Connecting the signal line
The signal line for using the digital inputs/outputs can be obtained from sonnen
GmbH4. Only this original signal line may be used.
The digital inputs and outputs (XDIO) are on the top side of the storage system.
These can be used to control external devices. The digital signals are transmitted via
the signal cable (4). We recommend connecting the signal cable to a terminal strip
(6). The individual cores of the signal cable from the terminal strip can then be
distributed to the corresponding downstream external components. The white wire
of the signal cable (4) represents the earth (GND). If more than one digital output
is used, then several wires must be connected to earth. For this reason we
recommend installing multiple terminals which are connected via a bridge (5) to
earth (GND).
4 Additional accessories ‘Digital input/output D-SUB’
KD-421 | Part no. 22136 | EN | X03 35 / 68

► Connect the signal line as shown in Figure 28.
1
4
2
3
24 VDC
GND
5 6
Figure 28: Connecting the signal line
1, 2 Knurled screw
3 Signal line connector
4 Signal line (not included in scope of delivery)
5 Bridge to connect terminals (not included in scope of delivery)
6 Terminal strip (not included in scope of delivery)
XDIO Digital inputs and outputs
Wire Wire cross- Voltage Max. Function

colour section Amperage
white 0.25/0.5 mm² 0 VDC 350 mA GND (Earth)
brown 0.25/0.5 mm² 24 VDC 50 mA DO self-consumption switch
green 0.25/0.5 mm² 24 VDC 50 mA DO PV reduction 1
yellow 0.25/0.5 mm² 24 VDC 50 mA DO PV reduction 2
grey 0.25/0.5 mm² 24 VDC 50 mA DO min / max SOC
red-blue 0.25/0.5 mm² 24 VDC 50 mA DI CHP (BHKW)
white-pink 0.25/0.5 mm² 24 VDC 50 mA DI CEI 0-21 Remote shutdown
grey-brown 0.25/0.5 mm² CEI 0-21 Inverter
white-grey 0.25/0.5 mm² 24 VDC 50 mA DI CEI 0-21 Signal Local
yellow-brown 0.25/0.5 mm² 24 VDC 50 mA DI CEI 0-21 Signal External
grey-pink 0.25/0.5 mm² 24 VDC 50 mA Supply voltage 24 VDC
Table 4: Technical data of the digital inputs (DI) and outputs (DO)
36 / 68 KD-421 | Part no. 22136 | EN | X03

6.6.2 Using DO self-consumption switch
Function
3
The storage system software can be
1 2 used to set a switch-on threshold and a

minimum switch-on duration.
4 If the generation surplus (= generation
– consumption – charging of the
storage system) exceeds the set
Figure 29: self-consumption switch
switch-on threshold, the self-
1 Earth (GND) consumption switch is activated. The
2 self-consumption switch self-consumption switch then remains
3 self-consumption switch active for the set minimum switch-on
4 Terminal strip duration.
Configuring software settings
The switching behaviour of the self-consumption switch can be configured using

the commissioning assistant (see 7.4 – p. 59).
► Adjust the switch-on threshold and minimum switch-on duration to suit the
consumers that are activated using the self-consumption switch.
Application example
As an example, a heating element (1)

can be activated/deactivated using the
self-consumption switch.
GND + 24 VDC
In this case it is a good idea to set the
A1
nominal power of the heating element
K1
A2 as the switch-on threshold.
1 Note that suitable safety measures

must be in place to prevent the heating
N
medium from overheating.
Figure 30: Activating/deactivating a
thermal resistor
1 Heating element
K1 External contactor
KD-421 | Part no. 22136 | EN | X03 37 / 68

6.6.3 Using DO min/max SOC
Function
3
The storage system software can be
1 used to set a minimum state of charge

2
(min SoC) and a maximum state of
4 charge (max SoC).

If the state of charge of the storage
Figure 31: min/max SOC digital output

system drops below the min SoC
value, the digital output is activated.
1 Earth (GND) The digital output is only then
2 DO min/max SOC deactivated when the state of charge
3 Signal line exceeds the max SoC value.
4 Terminal strip
The switching behaviour of the min/max SoC digital output can be configured using
the commissioning assistant (see 7.4 – p. 59).
► Set suitable values for the min SoC and max SoC variables.
Application example
As an example, a CHP unit (1) can be

activated/deactivated using the
min/max SoC digital output.
The CHP unit must be available via a
1
L
suitable interface (2) for
A1
K2 activation/deactivation.
A2
2 M In this example, the generation surplus

1
N produced by the CHP unit can be used
N
to charge the storage system. The
Figure 32: Activating/deactivating a CHP
power output of the CHP unit must be
unit
recorded for this.
1 CHP
2 Contact for activating CHP
K2 External relay
38 / 68 KD-421 | Part no. 22136 | EN | X03

6.6.4 Using DI CHP
The CHP digital input may only be used in the way described here in combination
with a combined heat and power station (CHP) which provides a constant supply
of electrical power. Modulating combined heat and power stations, which supply a
variable amount of power, must not be connected like this.
Function
Using the storage system’s software the power produced by the combined heat and
power station, or some other constant source of power, can be set.
If the digital CHP input is activated, then the set power will be added to the power
currently being produced.
Application example – Combined heat and power station with operating

contacts
1 A combined heat and power station (3) 24 VDC

GND
24 VDC with operating contacts (4) can be
2 wired up as shown in the left figure.
RDBU GYPK If the operating contacts (4) close, the

digital CHP5 (2) input will be activated.
6
1 Signal line
2 Digital input CHP
L
3 CHP
4 Floating operating contacts for the
combined heat and power station
L
3 M (open if the station is not operating,
1 4 closed if it is)
N
N
Figure 33: CHP with operating contacts
KD-421 | Part no. 22136 | EN | X03 39 / 68

Application example – Combined heat and power station without

operating contacts
24 VDC
GNDheat and power station (3)
A combined
without operating contacts (3) can be
wired up as shown in the left figure.
A5
current-operated relay (K3)
6 detects
whether the station (3) is currently
active.
If the normally open contacts of K3

L
close, the digital CHP input will be
A1
K3 activated.
A2
L 1 Signal line
M 3
2 Digital input CHP
1
N 3 CHP
K3 Current-operated relay
N
Figure 34: CHP without operating

contacts
40 / 68 KD-421 | Part no. 22136 | EN | X03

6.7 Using accessories
6.7.1 Using heat pump control

DANGER


Notice
Permission from the responsible distribution grid operator or power supply
company must be obtained before the heat pump control is installed in the
electrical distributor.
Residual current devices (RCDs) which are installed in the current path and / or in
the heat pump path have to be rebuilt. The new installation location is shown in
the circuit diagram on page 35.
The heat pump control can be used when the heat pump is billed using a separate
energy meter. In this case the heat pump is located in a separate current path (heat
pump current path) that is not recorded by the consumption measurement of the
power meter.
Using the heat pump control, the heat pump can be switched to the current path
(power meter current path) for which consumption is recorded by the power
meter. If this happens, the consumption of the heat pump is measured and included
in the storage system controls.
Function
If the self-consumption switch is activated, K230, K40 and then Q41 energise
(see Figure 35 - p. 43). The power meter current path is closed.
K30 energises two seconds after the self-consumption switch is activated. Then
Q31 energises. The heat pump current path is interrupted.
The auxiliary make contact 23/24 for Q31 can be used to activate the heat pump.
This requires a suitable interface for the heat pump.
When the self-consumption switch is deactivated, K30 de-energises immediately.
The heat pump current path is closed.
K40 de-energises two seconds after the self-consumption switch is deactivated.
Then Q41 de-energises. The power meter current path is interrupted.
KD-421 | Part no. 22136 | EN | X03 41 / 68

Wiring the heat pump control
► Wire the heat pump control as shown in Figure 35 (p. 43).

► Ensure that a de-energising delay (RV) of 2 seconds is set at relay K40.
► Ensure that a de-energising delay (RV) of 2 seconds is set at relay K40.
The switching behaviour of the self-consumption switch can be configured using

the commissioning assistant (see 7.4 – p. 59) on the page self-consumption switch,
the optional display and the sonnenApp.
► Set suitable values for the switching behaviour of the self-consumption switch.
The switch-on threshold and the minimum switch-on duration should be set
so that the current paths are not switched back and forth too frequently.
Designation Description
F50 Miniature circuit breaker
K30 Relay
K40 Relay
K230 Relay
Q31 Contactor
Q41 Contactor
Table 5: Content of the accessory heat pump control5
5 Included in “Additional accessories heat pump control”, available from sonnen GmbH.
42 / 68 KD-421 | Part no. 22136 | EN | X03

3
xT=1 xT=1
1 1
GND + 24 VDC 2s 2s
T=2s T=2s
4
A1 F=RV F=AV
K230
A2 AV
RV (ESV) (AV+)
The Connection of the digital output self consumption K40 K30

relay depends on the type of storage system
Figure shows connection of an eco 8.xx
L
N
5 7
23
Q31
24
L1 L2 L3 N PE
PE N U V W
6
8
L
FI (16 und17) are part of the
F50 house wiring
16 17
11
15 15 Q41
K30 K40 9
18 18
KSW
1 2 3
L1 L2 L3 N PE
L
K
10
K
A1 A1
12
L
Q31 Q41
K
A2 A2 Q31
N
kWh 3~ kWh 3~
15 14
L1
13
L2
L3
N
PE
Figure 35: Wiring the heat pump control
KD-421 | Part no. 22136 | EN | X03 43 / 68

No. Designation Description

1 Earth
2 Digital Output self-consumption switch / Relay
3 Terminal strip Example shows eco 8.xx
4 Signal line Digital Output storage system
5 Heat pump
6 Contact for activating the heat pump If existing, depending on the heat pump type
7 Consumers in building
8 Miniature circuit breaker Available on site
9 Power meter With current transformers, Figure shows WM 271
10 Residual current device (RCD) Depending on grid conditions and mains topology
11 Storage system
12 Miniature circuit breaker
13 Public electrical mains
14 Bidirectional counter
15
DANGER
Heat pump energy meter If existing
16 RCD heat pump If existing
17 RCD consumers If existing
WARNING
Table 6: Description of the wiring
DANGER
CAUTION 6.8 Installing the battery modules
A sonnenBatterie hybrid 8.1 needs to be installed with at least three battery

Notice
WARNING modules (6 kWh). Only then it is possible to commission the storage system.
Improper handling of battery modules

CAUTION
Emission of toxic substances!
DANGER
Notice ► Do not open battery modules.
► Do not damage battery modules.
Very high short-circuit currents are possible

WARNING
Risk of burns!
CAUTION Before working on the DC circuit:

► Set aside metal jewellery.
► Switch off the storage system.
Notice ► Switch off the series fuse.
► Remove the orange fuse
connectors on all battery modules.
► Use tools with insulated handles.
44 / 68 KD-421 | Part no. 22136 | EN | X03

WARNING
CAUTION
6.8.1 Measuring the battery module voltages
High compensating currents

Notice
Damage to battery modules!
► The battery modules are only allowed to be installed if the maximum deviation
between the measured voltages is less than 1 V.
► Measure the voltages between the

internal plus and minus poles of all
V
battery modules and note these down.

COM V
If the deviation is greater than 1 V:

► Notify the service team.
Figure 36: Measuring the battery module

voltages
6.8.2 Numbering the battery modules
► Apply the supplied stickers to the

modules.
The numbering begins with zero and
continues in ascending order.
Figure 37: Numbering the battery modules
6.8.3 Defining the communication addresses

► Set the communication addresses
for the battery modules using the
rotary switch.
The communication address matches
the number of the battery module.
Figure 38: Setting the communication

addresses using the rotary switch
KD-421 | Part no. 22136 | EN | X03 45 / 68

6.8.4 Setting the termination switches

► Slide the termination switch (switch
4) of the battery module with the
highest number up (switch position
ON).
For example, in the case of a storage
system with a total of three battery
Figure 39: Setting the termination switch modules (No. 0, 1 and 2), the
on the battery module with the highest termination switch on battery module 2
number must be set to ON.
► Ensure that the termination
switches of all other battery modules
are in switch position OFF.
6.8.5 Positioning the battery modules

► Position the battery modules as shown in figure
40.
The first battery module (Number 0) is positioned
right at the bottom in the extension cabinet. The
numbering of the battery increases from the bottom
to the top.
7
Figure 40: Positioning the

battery modules
46 / 68 KD-421 | Part no. 22136 | EN | X03

6.8.6 Connecting the DC lines
Incorrectly connected DC lines

DANGER
Danger to life due to electrocution / Risk of fire outbreak!
► Ensure that all battery modules are connected in parallel, i.e. all plus poles of
WARNING the battery modules are connected together (red to red). Likewise, ensure that all
minus poles of the battery modules are connected together (black to black).
CAUTION ► Ensure that all DC lines are
plugged into the sockets all the way.
Notice
Observe the following points:

• The plus line is connected to the plus pole of battery module 0.
• The minus line is connected to the minus pole of the last battery module (with
the highest number).
KD-421 | Part no. 22136 | EN | X03 47 / 68

► Connect the DC lines as it is shown

in figure 41.
Observe the following:
► The plus line is connected to the plus

pole of the first battery module (No.
0), which is positioned as the lowest
one in the extension cabinet.
► The minus line is connected to the
minus pole of the last battery module,
which is positioned as the uppermost in
7
the (main or extension) cabinet.
Figure 41: Connecting the DC lines
6.8.7 Connecting the BMS communication line
► Connect the BMS lines as shown in the following figures.
48 / 68 KD-421 | Part no. 22136 | EN | X03

6 kWh 8 kWh
456 ON
3
0 12
789A
EF
1 2 3 4
BCD
345 6 ON 345 6 ON
2 2
789A
789A
01
01
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
1 1
0 2
0 2
789A
789A
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
0 0
12
12
789A
789A
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
Figure 42: Connecting the BMS communication line on a sonnenBatterie with 6 and 8 kWh capacity
KD-421 | Part no. 22136 | EN | X03 49 / 68

10 kWh 12 kWh
4 6 ON
5
0 12
789A
EF
1 2 3 4
BCD
4 4
456 ON 45 6 ON
3 3
0 12
0 12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
2 2
78 A
789A
01
01
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
1 1
0 2
0 2
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
0 0
12
12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
50 / 68 KD-421 | Part no. 22136 | EN | X03

14 kWh 16 kWh
7 45 6 ON
0 12
89A
EF
1 2 3 4
BCD
45 ON 45 ON
6 6
0 12
0 12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
4 6 ON 4 6 ON
5 5
0 12
0 12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
4 4
456 ON 45 6 ON
3 3
0 12
0 12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
2 2
78 A
789A
01
01
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
1 1
0 2
0 2
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
345 6 ON 345 6 ON
0 0
12
12
78 A
789A
9
EF
EF
1 2 3 4 1 2 3 4
BCD BCD
KD-421 | Part no. 22136 | EN | X03 51 / 68

6.8.8 Attaching the fuse plugs

Prerequisite:
✔ All DC lines and BMS
communication lines are correctly
connected to the battery modules.
► Attach the fuse plugs on all battery

modules.
6.9 Mounting filter plates and cover
6.9.1 Mounting filter plates
The previously removed filter plates

must be reinstalled.
1. Mount the filter plate at the

extension cabinet.
The keyhole mounting points on the
filter plate must be slid onto the
nuts on the extension cabinet.
2. Slide the filter plate down, till it is in
its end position.
3. Mount the filter plate at the main

cabinet.
4. Mount the nuts on the inside of the

cabinets.
Figure 45: Mounting the filter plates
52 / 68 KD-421 | Part no. 22136 | EN | X03

6.9.2 Connecting earthing conductor

An earthing conductor (7) is connected
to the extension cabinet (2).
► Connect the other end of the

1
earthing conductor to the earth bolt (3)
2
on the cover (1).
Take care of the positioning of the

3 components (4 to 6).
4
5 ► Tighten the locking nut (6) with a

7 6
torque of 5 Nm.
1 Cover
2 Extension cabinet
Figure 46: Earthing wire between
3 Earth bolt
extension cabinet and cover
4 Contact disc
5 Cable lug
6 Locking nut
7 Earth conductor
6.9.3 Mounting the cover of the extension cabinet
► Hook the cover into the front of the

extension cabinet.
► Mount the cover with the three
screws. Tighten the screws only slightly,
making sure that the cover can still be
moved.
► Close the door of the main cabinet
and align the cover.
► Fully tighten the screws.
Figure 47: Mounting the cover of the

extension cabinet
KD-421 | Part no. 22136 | EN | X03 53 / 68

6.10 Connecting the photovoltaic system

DANGER


Notice
DANGER
6.10.1 Assembling the PV plug-in connectors
Improper assembly of the PV plugs

WARNING
Risk of fire outbreak because of improperly assembled PV plug-in connectors,
which can get very hot.
CAUTION
► Assemble the plug-in connectors correctly.
► Follow the manufacturer’s instructions.
Notice
PV plug-in connectors and the
1 2 manufacturer’s assembly instructions
are provided.
+ _ ► Connect the PV plug-in connector

4 as specified by the manufacturer to the
3
plus and minus wires.
Figure 48: PV plug-in connectors ► Pay careful attention to the polarity
1 Plus wire of the PV plug-in connector.

2 Minus wire
3 PV plug-in connector minus
4 PV plug-in connector plus
54 / 68 KD-421 | Part no. 22136 | EN | X03

6.10.2 Connecting the PV system
DC voltage too high

DANGER
DANGER ► Only connect PV systems whose unloaded voltage does not exceed the
WARNING maximum voltage for the PV inputs.
Plugging in/unplugging PV lines during operation

CAUTION
WARNING
Serious burns trough arcing!
CAUTION
Notice Before plugging in/unplugging PV lines:
► Switch the PV disconnector (SPV) off.
Notice Prerequisite:
✔ The maximum input current of the PV inputs (see 3.1 – 11) must not be
exceeded.
✔ The unloaded voltage of the PV system must never exceed the maximum input
voltage (see 3.1 – 11) for the PV inputs. Please note that the unloaded voltage of
PV systems depends upon the ambient conditions (particularly the temperature).
► Remove the protective caps from
the PV connections XPVP and XPVM.
1 ► Keep the caps in a safe place.
► Connect the PV plus wire (2) to the

2 3 XPVP connection
+ _
► Connect the PV minus wire (3) to
the XPVM connection.
XPVP XPVM 1 PV system

2 PV plus line
3 PV minus line
XPVP PV plus connection
Figure 49: Connecting the PV system to XPVM PV minus connection
the storage system
KD-421 | Part no. 22136 | EN | X03 55 / 68

7 Commissioning
7 Commissioning
7.1 Filling in the type plate

Tool:
• Permanent marker
► Mark off the correct battery capacity and nominal power on the type plate of
the storage system.
The type plate is located on the outside of the storage system. The battery capacity
and nominal power can be determined from the technical data (see 3.1 - p. 13).
7.1.1 Taking photos to document installation
The photo upload is obligatory for both offline commissioning and online com-
missioning.
To fully document the installation, photos of the finished installation must be taken
and send to sonnen.
1. Take the described photos of the storage system (see appendix of the document).
2. Go to the following website: sonnensupportaustralia.com.au
3. Navigate to ‘Reference’ and ‘System Commissioning’.
4. There the photos can be uploaded, using the procedure described.
5. Alternatively the photos can be send to the following e-mail address:

support@sonnen.com.au
7.2 Filling in the commissioning report (optional)
Paper form only necessary when commissioning without an internet

connection
Thanks to the commissioning assistant 2, it is no longer necessary to complete and
send the commissioning report in paper form.
► Only carry out the following steps if the commissioning assistant displays a
corresponding message.
► Complete the commissioning report in the appendix of the document in full.
► Make a copy of the filled in commissioning report, the original remains with the
operator.
56 / 68 KD-421 | Part no. 22136 | EN | X03

Commissioning 7
► Send a scan of the commissioning report to the following e-mail address within
5 working days: service@sonnen.de and support@sonnen.com.au
7.3 Switching on the storage system

To switch the storage system on, several switches have to be operated.
The storage system can only be switched on if the public network voltage has been
switched on first.
7.3.1 Closing the door of the main cabinet

► Close the door of the main cabinet.
► Install the two Allen screws on the
left side of the main cabinet.
Figure 50: Closing the main cabinet
7.3.2 Switching on the grid voltage

► Switch on the grid voltage using the AC miniature circuit breaker.
KD-421 | Part no. 22136 | EN | X03 57 / 68

7 Commissioning
7.3.3 Switching on the PV disconnector SPV

The PV disconnector (SPV) makes the
connection between the PV system and
the inverter.
► Switch the PV disconnector (SPV)

on.
If there are external DC isolating

I switches:
► Switch these on too.
DANGER 0 SPV
WARNING
Figure 51: Switching SPV on
CAUTION
7.3.4 Switching on the fuse switch F1
If the storage system can‘t be switched on:

Notice
► Do not attempt switching on the storage system more then three times.
► Notify the service team!
Further attempts can damage the battery modules.
Fuse switch F1 establishes the connection between the battery and the inverter. To
be able to switch on fuse switch F1, switch S1 must also be pressed.
1 Press switch S1 and hold it down
while the following steps are carried
out.
2 Switch on fuse switch F1.
3 Keep switch S1 held down for at

S1
least another 5 seconds.
4 Release switch S1.

F1
The storage system then starts up and
off off off performs a self-test. Once the self-test
is successful, the storage system is
ready to operate.
Figure 52: Fuse switch F1 and switch S1 at
the top side of the storage system
When the storage system has started up and is running in normal operation, the
sonnen Eclipse pulses white.
58 / 68 KD-421 | Part no. 22136 | EN | X03

Commissioning 7
7.4 Running the commissioning assistant

With the help of the commissioning assistant the storage system can be
configured. The operator as well as the electrician have to enter some informations
while the commissioning assistant is running.
The storage system is only ready for operation if the commissioning assistant is
fully completed.
The commissioning assistant does not support changes of the power factor mode.
Please contact the service, if this setting needs to be changed.
7.4.1 Establishing connection to storage system

► Connect the laptop (4) to the router of the home network (2). The storage
system must also be connected to the router of the home network.
3 4
1
Figure 53: Connecting laptop to the router of the home network
1, 3 Ethernet line 4 Laptop

2 Router of the home network
7.4.2 Establishing connection to storage system
► Enter the address ‘find-my.sonnen-batterie.com’ in the address line of your

browser.
https://find-my.sonnen-batterie.com
The following window appears:
KD-421 | Part no. 22136 | EN | X03 59 / 68

7 Commissioning
12345
123.456.78.99
Figure 54: Website find-my.sonnen-batterie.com
► Choose the storage system to be configured and start the commissioning

assistant 2.
► Log in as Installer. Use the password that you received throughout the
certification training.
► Run the commissioning assistant until it is fully completed.

If the page ‘find-my.sonnen-batterie.com’ does not appear or the storage system is
not displayed:
► Follow the instructions in section troubleshooting (see section 9 - p. 63).
60 / 68 KD-421 | Part no. 22136 | EN | X03

Decommissioning 8
WARNING
CAUTION 8 Decommissioning
Deep-discharge of the battery modules
Notice
Destruction of the battery modules!
► Do not disconnect the storage system from the public grid for long periods of
time.
► Never continue to operate battery modules which have been deep-discharged.
8.1 Switching the storage system off

This section describes how the storage system is switched off and is thus put out of
operation. To be able to work safely on the storage system, additional steps are
necessary (see 8.2 - p. 62)
1. Switch off fuse switch F1.
2. Switch off the PV disconnector

(SPV).
I
SPV
F1
off off off
Figure 55: Fuse switch F1 and PV disconnector
KD-421 | Part no. 22136 | EN | X03 61 / 68

8 Decommissioning
8.2 Switching the storage system off to electrically

isolate it
High voltages inside the storage system

DANGER
► Switch off the storage system.

► Wait five minutes so the capacitors can discharge.
CAUTION ► Check that the device is disconnected from the power supply.
When working on the storage system it must be completely switched off to be

Notice
electrically isolated.
1. Switch off fuse switch F1 and PV disconnector SPV, as described in section 8.1
(p.61).
2. Switch off the grid voltage using the AC miniature circuit breaker.
3. Take steps to ensure that these switches cannot be switched on again.

4. Pull all of the PV plug-in connectors
out of the storage system. When
doing this, observe the
+ _
specifications of the connector’s
XPVP manufacturer.
XPVM
5. Wait at least 5 minutes until the
capacitors in the inverter have fully
Figure 56: Removing the PV plug-in connectors
discharged.
6. Carefully check that there is no voltage inside the storage system.
The battery modules are the sole remaining sources of voltage in the storage
system.
62 / 68 KD-421 | Part no. 22136 | EN | X03

Troubleshooting 9
9 Troubleshooting
Disturbance Reason Correction
No connection to the Web interface of No connection between the storage system and ► Make sure that the Ethernet line between
the storage system the server. the storage system and the Router of the home
(find-my.sonnen-batterie.com). network is correctly connected.
► Make sure that the Router of the home

network allows connections on the following
ports:
TCP-Port Service
22 ssh
80 http
8080 http
443 https
3333 debug
UDP-Port Dienst
1194 VPN
123 NTP
1196 VPN
The sonnen Eclipse of the storage The internet connection to the storage ► Check whether the home network router is
system pulses orange. system has been interrupted. able to establish an internet connection.
If so:
► Ensure that the network cable for the
storage system is connected to the home
network router.
The sonnen Eclipse of the storage The storage system has detected a problem that ► Please contact the sonnen service team to
system illuminates red. is preventing normal operation or may cause get help resolving the problem.
damage to the storage system.
The sonnen Eclipse of the storage The storage system is not connected to ► Check that the circuit breaker in the supply
system pulses green. the public electricity grid. line of the storage system is switched on.
If so: The public electricity grid does not provide
any electrical energy (grid outage).
► It can only be waited until the public
electrical grid supplies energy again. Thereafter,
the storage systems resumes normal operation.
Storage system with emergency power function No troubleshooting necessary.
only*: The storage system is not connected to
the public electricity network and is in
emergency operation.
*Optional accessories sonnenBackup-Box.
KD-421 | Part no. 22136 | EN | X03 63 / 68

10 Uninstallation and disposal
10 Uninstallation and disposal

10.1.1 Uninstallation and disposal
Improper uninstallation of the storage system

DANGER
DANGER Danger to life due to electrocution!
► The storage system must only be uninstalled by licensed electricians.

WARNING
WARNING 10.1.2 Disposal
CAUTION
Improper transport of battery modules
CAUTION
DANGER
Notice
► Transport the battery modules in their original packaging only. If you no longer
Notice
have the original packaging, new packaging can be requested from sonnen GmbH.
WARNING ► Never transport damaged battery modules.
Improper disposal of battery modules

CAUTION
Explosion or fire outbreak at battery modules or emission of toxic substances!
► Do not dispose of batteries in fire.

Notice
The storage system and the batteries it
contains must not be disposed of as
domestic waste!
► Dispose of the storage system and
the batteries it contains in an
environmentally friendly way through
suitable collection systems.
Figure 57: WEEE symbol
64 / 68 KD-421 | Part no. 22136 | EN | X03

So nn en Au st ralia Pt y Lt d
604 South Tower
1-5 Railway Street, Chatswood
NSW 2067
ACN 611 337 547
0408 802 388

So nn en Au st ralia Pt y Lt d
604 South Tower
1-5 Railway Street, Chatswood
NSW 2067
ACN 611 337 547
0408 802 388

Commissioning report
Important: The commisioning report must only be filled in and sent out if the commissioning assistant 2
shows a corresponding message while initial commissioning!
If so: Please send the filled in report to the following email address within 5 working days of successful
commissioning: service@sonnen.de and support@sonnen.com.au
Commissioning details Specialist company details
Storage system serial number Company
Date of commissioning Street
Operator details Post code, town
Telephone
Surname, first name
Email address
Street
Post code, town Details on electrician carrying out the work
Telephone
Name
Email address
Company
Certification number
Storage system location (only required if different from the address above) Details on network topology (mark off the applicable network)
Street □ TT | □ TN-S | □ TN-C-S

Post code, town □ TN-C (classic earthing)
Capacity of the storage system
kWh
Details on PV system
Nominal power: kWp
Special notes / points to be addressed
Electrician’s declaration
□ I confirm that my details are correct.
□ The storage system was installed and commissioned by me in the proper manner. I followed the installation instructions in doing
so.
Place, date Electrician’s signature
Operator’s declaration
□ I confirm that my details are correct.
□ I received the warranty conditions.
Place, date Operator’s signature
Commissioning report for sonnenBatterie hybrid

sonnen GmbH
Am Riedbach 1
D-87499 Wildpoldsried

Sonnenbatterie Hybrid 816

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Installation instructions | for licensed electricians

sonnenBatterie hybrid 8.1

KD-421 · Part no. 22136 · Version X03 info@sonnen.de · www.sonnen.de

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EN ► Read this documentation carefully before installation.

► Retain this document for reference purposes.

2 / 68 KD-421 | Part no. 22136 | EN | X03

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KD-421 | Part no. 22136 | EN | X03 3 / 68

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5.4 Mounting the storage system.......................................................................... 23

4 / 68 KD-421 | Part no. 22136 | EN | X03

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7.1.1 Taking photos to document installation....................................................56

KD-421 | Part no. 22136 | EN | X03 5 / 68

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1 Information about this document

1.1 Target group of this document

1.2 Designations in this document

Complete designation Designation in this document

1.3 Explanation of symbols

Dangerous situation leading to potential death or serious injury if the safety

Important information not associated with any risks to people or property.

6 / 68 KD-421 | Part no. 22136 | EN | X03

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2.1 Intended Use

Especially the following uses are not permissible:

• Operation in flammable environments or areas at risk of explosion.

2.2 Requirements for the electrician

KD-421 | Part no. 22136 | EN | X03 7 / 68

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2.3 Operating the storage system

2.4 Product modifications or changes to the product

2.5 Voltage on and in the storage system

even after the storage system is switched off.

8 / 68 KD-421 | Part no. 22136 | EN | X03

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electrically isolate it.

Only then can the storage system be opened.

2.6 Handling the battery modules

In the event that module contents are released:

KD-421 | Part no. 22136 | EN | X03 9 / 68

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2.7 Conduct in case of a fire

Information on the battery modules:

10 / 68 KD-421 | Part no. 22136 | EN | X03

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3.1 Technical data

Photovoltaic (PV) input

KD-421 | Part no. 22136 | EN | X03 11 / 68

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sonnenBatterie hybrid 8.1-5.5 8.1/6 8.1/8 8.1/10 8.1/12 8.1/14 8.1/16

Dimensions / weight with small extension cabinet (from 6 kWh up to 10 kWh)

Dimensions / weight with big extension cabinet (from 6 kWh up to 16 kWh)

12 / 68 KD-421 | Part no. 22136 | EN | X03

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3.2 System components

The inverter of the storage system is retrofittable for the connection of an

No. Designation Function

1 Set ‘Retrofitting DRED port’ is available from sonnen GmbH.