SMA Solar Technology FLEXIBLE STORAGE SYSTEM Guide de l'utilisateur
SI44M-80H-13-BBF-IA-en-10 | Version 1.0ENGLISH
System Description
SMA FLEXIBLE STORAGE SYSTEM with Battery-
Backup Function
Battery-Backup Systems including Increased Self-Consumption with
SUNNY ISLAND 4.4M / 6.0H / 8.0H and SUNNY HOME MANAGER
Legal Provisions SMA Solar Technology AG
System DescriptionSI44M-80H-13-BBF-IA-en-102
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No part of this document
may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic,
mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.
Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not
require prior approval.
SMA Solar Technology AG makes no representations or warranties, express or implied, with respect to this
documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied
warranties of utility, merchantability, or fitness for any particular purpose. All such representations or warranties are
expressly disclaimed. Neither SMA Solar Technology AG nor its distributors or dealers shall be liable for any indirect,
incidental, or consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may
not apply.
Specifications are subject to change without notice. Every attempt has been made to make this document complete,
accurate and up-to-date. Readers are cautioned, however, that product improvements and field usage experience may
cause SMA Solar Technology AG to make changes to these specifications without advance notice, or per contract
provisions in those cases where a supply agreement requires advance notice. SMA Solar Technology AG shall not be
responsible for any damages, including indirect, incidental or consequential damages, caused by reliance on the
material presented, including, but not limited to, omissions, typographical errors, arithmetical errors or listing errors in
the content material.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
Email: [email protected]
Status: 9/17/2019
Copyright © 2019 SMA Solar Technology AG. All rights reserved.
Table of Contents
SMA Solar Technology AG
System Description 3SI44M-80H-13-BBF-IA-en-10
Table of Contents
1 Information on this Document..................................................................................................... 5
1.1 Validity ............................................................................................................................................................. 5
1.2 Target Group ................................................................................................................................................... 5
1.3 Content and Structure of this Document......................................................................................................... 5
1.4 Levels of Warning Messages.......................................................................................................................... 5
1.5 Symbols in the Document................................................................................................................................ 6
1.6 Typographies in the Document....................................................................................................................... 6
1.7 Designation in the document .......................................................................................................................... 6
1.8 Explanation of Used Terms ............................................................................................................................. 7
1.9 Additional Information..................................................................................................................................... 7
2 Safety ............................................................................................................................................ 8
2.1 Intended Use.................................................................................................................................................... 8
2.2 IMPORTANT SAFETY INSTRUCTIONS......................................................................................................... 9
2.3 Battery Safety Information............................................................................................................................... 13
3 Functions and Design................................................................................................................... 15
3.1 Information on Battery-Backup Systems......................................................................................................... 15
3.2 Design and Functions of the Battery-Backup System..................................................................................... 15
3.3 Design and Functions of the Automatic Transfer Switch ............................................................................... 17
3.3.1 Devices of the Automatic Transfer Switch....................................................................................................... 17
3.3.2 Grid Disconnection .......................................................................................................................................... 18
3.3.3 Grounding Device for the Battery-Backup Grid............................................................................................. 19
3.4 Phase Coupling for Single-Phase Battery-Backup Systems ........................................................................... 19
3.5 Requirements of VDE Application Guide 2510-2......................................................................................... 20
3.6 Communication................................................................................................................................................ 20
4 Battery-Backup Systems With All-Pole Disconnection............................................................... 21
4.1 Single-phase battery-backup system with all-pole disconnection ................................................................. 21
4.1.1 Automatic Transfer Switching Device for Single-Phase Battery-Backup System with All-Pole
Disconnection................................................................................................................................................... 21
4.1.2 Circuitry Overview for single-Phase Battery-Backup System with All-Pole Disconnection ........................... 22
4.1.3 Connection of the Sunny Island ...................................................................................................................... 23
4.2 Three-Phase Battery-Backup System with All-Pole Disconnection ................................................................. 25
4.2.1 Automatic Transfer Switching Device for Three-Phase Battery-Backup System with All-Pole
Disconnection................................................................................................................................................... 25
4.2.2 Circuitry Overview for Three-Phase Battery-Backup System with All-Pole Disconnection............................ 26
4.2.3 Connecting the Master with All-Pole Disconnection ...................................................................................... 27
4.2.4 Connecting the Slaves ..................................................................................................................................... 29
5 Battery-Backup Systems Without All-Pole Disconnection ......................................................... 31
5.1 Single-Phase Battery-Backup System without All-Pole Disconnection........................................................... 31
5.1.1 Automatic Transfer Switching Device for Single-Phase Battery-Backup System without All-Pole
Disconnection................................................................................................................................................... 31
5.1.2 Circuitry Overview for Single-Phase Battery-Backup System without All-Pole Disconnection...................... 32
5.1.3 Connection of the Sunny Island ...................................................................................................................... 33
5.2 Three-Phase Battery-Backup System without All-Pole Disconnection............................................................ 35
5.2.1 Automatic Transfer Switching Device for Three-Phase Battery-Backup System without All-Pole
Disconnection................................................................................................................................................... 35
5.2.2 Circuitry Overview for Three-Phase Battery-Backup System without All-Pole Disconnection....................... 36
5.2.3 Connecting the Master without All-Pole Disconnection ................................................................................. 37
Table of Contents SMA Solar Technology AG
System DescriptionSI44M-80H-13-BBF-IA-en-104
5.2.4 Connecting the Slaves ..................................................................................................................................... 39
6 Commissioning ............................................................................................................................. 41
6.1 Commissioning Procedure............................................................................................................................... 41
6.2 Testing the Automatic Transfer Switch Function............................................................................................. 41
6.3 Adjusting the Configuration of the Sunny Island ........................................................................................... 44
6.4 Adjusting the Configuration of the PV Inverters ............................................................................................. 44
6.5 Activating Phase Coupling in Single-Phase Battery-Backup Systems ........................................................... 45
6.6 Commissioning a System With Increased Self-Consumption........................................................................ 45
6.7 Commissioning a System without Increased Self-Consumption.................................................................... 47
7 Only for Belgium: connection of battery-backup systems with Sunny Island......................... 48
7.1 Automatic Transfer Switching Device for Single-Phase Battery-Backup System in Belgium........................ 48
7.2 Circuitry Overview for Single-Phase Battery-Backup System in Belgium...................................................... 49
7.3 Automatic Transfer Switching Device for Three-Phase Battery-Backup System in Belgium......................... 50
7.4 Circuitry Overview for Three-Phase Battery-Backup System in Belgium....................................................... 51
8 Contact .......................................................................................................................................... 52
1 Information on this Document
SMA Solar Technology AG
System Description 5SI44M-80H-13-BBF-IA-en-10
1 Information on this Document
1.1 Validity
This document is valid for the SMAFlexibleStorageSystem with battery-backup function with the following device
types:
• SI4.4M-13 (SunnyIsland 4.4M) from firmware version 3.01.xx.R
• SI6.0H-13 (SunnyIsland 6.0H) from firmware version 3.01.xx.R
• SI8.0H-13 (SunnyIsland 8.0H) from firmware version 3.01.xx.R
• HM-20 (SunnyHomeManager 2.0) from firmware version 2.00.00.R
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Knowledge of how an inverter works and is operated
• Knowledge of how batteries work and are operated
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information
• Knowledge of and compliance with the documents of the battery manufacturer with all safety information
1.3 Content and Structure of this Document
This document summarizes the specific information for the SMA Flexible Storage System with battery-backup function
(battery-backup system).
Circuitry overviews provide the basic principle of how an system must be connected. The structure of this document
specifies the chronological sequence for configuration and commissioning.
This document supplements the documents that are enclosed with each product and does not replace any locally
applicable codes or standards. Read and observe all documents supplied with the product.
Illustrations in this document are reduced to the essential information and may deviate from the real product.
1.4 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
1 Information on this Document SMA Solar Technology AG
System DescriptionSI44M-80H-13-BBF-IA-en-106
1.5 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
✖
A problem that might occur
Example
This information is relevant for systems which are to be operated in parallel with utility grid.
(e.g. SMAFlexibleStorageSystem).
Content is relevant for off-grid systems.
1.6 Typographies in the Document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• Enter 10 in the field Minutes.
>• Connects several elements to be
selected • Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or pressed • Select [Enter].
# • Placeholder for variable components
(e.g., parameter names) • Parameter WCtlHz.Hz#
1.7 Designation in the document
Complete designation Designation in this document
SMAFlexibleStorageSystem with Battery-Backup Func-
tion Battery-backup system
SMA Speedwire Speedwire
Sunny Boy, Sunny Tripower PV inverter
SunnyPlaces, SunnyPortal, SunnyHomeManager Communication product
1 Information on this Document
SMA Solar Technology AG
System Description 7SI44M-80H-13-BBF-IA-en-10
1.8 Explanation of Used Terms
Term Explanation
Grid failure Utility grid failure or deviation from the country-specific thresholds for voltage
and frequency
Automatic transfer switch with
battery-backup function disconnects the battery-backup grid from the utility grid in the event of grid fail-
ure.
1.9 Additional Information
For more information, please go to www.SMA-Solar.com.
Title and information content Type of information
Mounting, installation, commissioning, operation, configuration, troubleshooting
and decommissioning of the inverter Operating manual
"Parameters and Measured Values"
Overview of all inverter operating parameters and their configuration options
Technical Information
"SMASmartHome"
The System Solution for Greater Independence
Planning Guidelines
"SMAFlexibleStorageSystem with Battery Backup Function" Planning Guidelines
SUNNYISLAND 4.0M / 6.0H / 8.0H Operating manual
2 Safety SMA Solar Technology AG
System DescriptionSI44M-80H-13-BBF-IA-en-108
2 Safety
2.1 Intended Use
An SMAFlexibleStorageSystem with battery-backup function (battery-backup system) takes care of the uninterrupted
supply of the loads with electricity during a grid failure. An automatic transfer switching device disconnects the
household grid with the PV system from the utility grid. When this happens, a battery inverter forms a battery-backup
grid and the PV system can supply the loads. When the energy demand of the active loads exceeds the current power
of the PV system, the battery will provide the energy shortfall.
Loads connected to the SunnyIsland must have an CE, RCM or UL identification label.
The product is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal
injury.
Grid feed-in and purchased electricity are recorded with an SMAEnergyMeter only. An SMAEnergyMeter does not
replace the energy meter of the electric utility company.
The battery-backup system must only be used in countries for which it is licensed or for which it is released by SMA
Solar Technology AG and the grid operator. In order to meet the technical connection requirements of the grid
operator and the locally applicable standards and directives, you must install the battery-backup system either with or
without all-pole disconnection:
• Battery-backup system with all-pole disconnection
In the event of grid failure, a tie switch disconnects all line conductors and the neutral conductor from the utility
grid. If the technical connection requirements of the grid operator or the local standards and directives call for or
allow all-pole disconnection, you must install this basic structure, e.g. in Belgium, Denmark, Germany, Austria and
Switzerland.
• Battery-backup system without all-pole disconnection
In the event of grid failure, a tie switch disconnects all line conductors from the utility grid. The neutral conductor of
the battery-backup grid remains permanently connected to the utility grid. If the technical connection requirements
of the grid operator or the local standards and directives prohibit disconnection of the neutral conductor, you must
install this basic structure.
Single-phase clusters are not permitted. In a three-phase cluster, only device types with the same output power may be
installed. This means that the device types, such as SI6.0H-12 and SI6.0H-13, may be combined within a cluster. In
contrast, device types with different outputs (e.g. SI6.0H-13 and SI8.0H-13) may not be combined. The cluster master
must always be an SI4.4M-13 / SI6.0H-13 / SI8.0H-13. It must be equipped with the latest firmware version.
Single-phase battery-backup grids can be connected to three-phase utility grids. In a single-phase battery-backup
system, a grid failure is only recognized at the line conductor that is connected to the SunnyIsland. In the event of grid
failure, only single-phase PV inverters can feed into a single-phase battery-backup grid.
Only applies in Belgium: If the utility grid functions as an IT system that is grounded to the neutral point of the source,
the connected battery-backup system must be single-phase.
With phase coupling, all the loads in the battery-backup grid must be single-phase. No more than one SunnyIsland
may be connected in a single-phase battery-backup system.
The battery-backup system must be equipped with an automatic transfer switch (see planning guidelines
"SMAFlexibleStorageSystem with Battery Backup Function" at www.SMA-Solar.com). This automatic transfer switch
is not part of the SunnyIsland scope of delivery.
The automatic transfer switch is not a distribution board for the loads or the PV system. The loads and the PV system
must be secured with protective devices in accordance with the local standards and directives. Grid-forming voltage
sources (e.g. generators) must not be connected to the battery-backup system. The equipment or devices of the
automatic transfer switch must satisfy protection class II and be operable without prior knowledge of electrical
engineering.
The tie switch in the automatic transfer switch must have an ampacity that is designed for at least the operating range
of the upstream fuse.
2 Safety
SMA Solar Technology AG
System Description 9SI44M-80H-13-BBF-IA-en-10
The connected PV inverters must be suitable for use in battery-backup systems. In addition, the power of the PV system
must be appropriate for the system (see planning guidelines "SMAFlexibleStorageSystem with Battery Backup
Function" at www.SMA-Solar.com).
In a three-phase battery-backup system, both single-phase and three-phase PV inverters can be connected.
The entire battery voltage range must be completely within the permissible DC input voltage range of the SunnyIsland.
The maximum permissible DC input voltage of the SunnyIsland must not be exceeded. A battery fuse must be installed
between the battery and the SunnyIsland.
With lead-acid batteries, the battery room must be ventilated in accordance with the requirements of the battery
manufacturer and with the locally applicable standards and directives (see documentation of the battery
manufacturer).
The following conditions must be satisfied for lithium-ion batteries:
• The lithium-ion battery must comply with the locally applicable standards and directives and must be intrinsically
safe.
• The battery management of the lithium-ion battery used must be compatible with the SunnyIsland (see the
technical information at “List of Approved Batteries”).
• The lithium-ion battery must be able to supply enough current at maximum output power of the SunnyIsland (for
technical data see the SunnyIsland operating manual).
An DC supply grid may not be established with the SunnyIsland.
Use SMA products only in accordance with the information provided in the enclosed documentation and with the
locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or
property damage.
Alterations to the SMA products, e.g., changes or modifications, are only permitted with the express written permission
of SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such
changes.
Any use of the product other than that described in the Intended Use section does not qualify as the intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient, dry place for
future reference and observe all instructions contained therein.
This document does not replace and is not intended to replace any local, state, provincial, federal or national laws,
regulations or codes applicable to the installation, electrical safety and use of the product. SMA Solar Technology AG
assumes no responsibility for the compliance or non-compliance with such laws or codes in connection with the
installation of the product.
2.2 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As with all electrical
or electronical devices, there are residual risks despite careful construction. To prevent personal injury and property
damage and to ensure long-term operation of the product, read this section carefully and observe all safety
information at all times.
2 Safety SMA Solar Technology AG
System DescriptionSI44M-80H-13-BBF-IA-en-1010
DANGER
Danger to life due to electric shock when live components or cables are touched
High voltages are present in the conductive components or cables of the product. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the system from voltage sources and make sure it cannot be reconnected before working on the
device.
• Observe all safety information on components associated with the product.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock in case of overvoltages and if surge protection is missing
Overvoltages (e.g. in the event of a flash of lightning) can be further conducted into the building and to other
connected devices in the same network via the network cables or other data cables if there is no surge protection.
Touching live parts and cables results in death or lethal injuries due to electric shock.
• Ensure that all devices in the same network and the battery are integrated into the existing surge protection.
• When laying the network cables or other data cables outdoors, it must be ensured that a suitable surge
protection device is provided at the transition point of the cable from the product or the battery outdoors to the
inside of a building.
DANGER
Danger to life due to electric shock in case of overvoltages and unsuitable loads
Overvoltages of up to 1500V can occur in the stand-alone grid and in the battery-backup grid. If the loads are not
suitable for these overvoltages or are not safe to operate, a voltage that poses a danger to life may be present on
accessible parts or cables. Touching live parts and cables results in death or lethal injuries due to electric shock.
• Only connect loads that have a CE, RCM or UL designation. These loads are suitable for overvoltages of up to
1500V.
• Operate the loads only when they are technically faultless and in an operationally safe state.
• Check the loads regularly for visible damage.
DANGER
Danger to life due to electric shock when operating a damaged product
Operating a damaged product can lead to hazardous situations since high voltages can be present on accessible
product parts. Touching live parts and cables results in death or lethal injuries due to electric shock.
• Only operate the system when it is in a flawless technical condition and safe to operate.
• Check the system regularly for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear suitable personal protective equipment for all work on the product.
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