Installation Manual
SMA FLEXIBLE STORAGE SYSTEM in the United Kingdom
Adjustment of electrical connection and configuration for the low-voltage grid in the
United Kingdom of Great Britain and Northern Ireland
FSS-UK-IA-en-20 | Version 2.0 ENGLISH
Legal Provisions SMA Solar Technology AG
Legal Provisions
The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either
partially or in full, requires the written permission of SMA Solar Technology AG.
Any internal company copying of the document for the purposes of evaluating the product or its correct implementation
is allowed and does not require permission.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
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SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
E-mail: info@SMA.de
© 2004 to 2014 SMA Solar Technology AG. All rights reserved.
2 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Content of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Planning the Installation of the SMA Flexible Storage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Planning the Installation of the Battery-Backup System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 SMA Flexible Storage System (Self-Consumption Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Circuitry Overview of a Single-Phase SMA Flexible Storage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Circuitry Overview of a Three-Phase SMA Flexible Storage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Battery-Backup System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Single-Phase Battery-Backup System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1.1 Automatic Transfer Switch of the Single-Phase Battery-Backup System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.1.2 Circuitry Overview of the Single-Phase Battery-Backup System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.2 Three-Phase Battery-Backup System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2.1 Automatic Transfer Switch of the Three-Phase Battery-Backup System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5.2.2 Circuitry Overview of the Three-Phase Battery-Backup System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6 Extended Configuration of the Sunny Island. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Changing the Configuration of the PV Inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installation Manual FSS-UK-IA-en-20 3
SMA Solar Technology AG 1 Information on this Document
1 Information on this Document
1.1 Validity
This document is valid for the following device types:
• SI3.0M-11 (Sunny Island 3.0M) from firmware version 3.2
• SI4.4M-11 (Sunny Island 4.4M) from firmware version 3.2
• SI6.0H-11 (Sunny Island 6.0H) from firmware version 3.1
• SI8.0H-11 (Sunny Island 8.0H) from firmware version 3.1
1.2 Content of this Document
This document summarizes the information required in Great Britain and Northern Ireland for the installation of an
SMA Flexible Storage System or an SMA Flexible Storage System with battery-backup function.
1.3 Target Group
The activities described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Training in how to deal with the dangers and risks associated with installing and using electrical devices and batteries
• Training in the installation and commissioning of electrical devices
• Knowledge of and adherence to the local standards and directives
• Knowledge of and compliance with this document and all documentation related to the products including all safety
information
1.4 Additional Information
Links to additional information can be found at www.SMA-Solar.com:
Document title Document type
SMA Smart Home Planning Guidelines
SMA Flexible Storage System with Battery-Backup Function Planning Guidelines
List of Approved Lithium-Ion Batteries Technical Information
Installation Manual FSS-UK-IA-en-20 5
1 Information on this Document SMA Solar Technology AG
'$1*(5
:$5 1,1*
&$87,21
/05*$&
1.5 Symbols
Symbol Explanation
Indicates a hazardous situation which, if not avoided, will result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury
Indicates a situation which, if not avoided, can result in property damage
Indicates that only the following section contains tasks that must be performed by qualified
persons
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
1.6 Nomenclature
In this document, the SMA Flexible Storage System with battery-backup function is referred to as battery-backup system.
6 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 2 Safety
:$5 1,1*
2 Safety
2.1 Intended Use
When using the SMA Flexible Storage System and the battery-backup system in Great Britain and Northern Ireland, an
external grid and PV system protection must be installed. Contact your grid operator to check which standards are locally
applicable for the planned battery-backup system:
• G83/2: Engineering Recommendation G83, Issue 2
• G59/3: Engineering Recommendation G59, Issue 3
This standard must comply with the external grid and PV system protection.
Use the SMA Flexible Storage System and the battery-backup system only in accordance with the enclosed
documentation and with the locally applicable standards and directives. Any other use may cause personal injury or
property damage. Alterations to the SMA Flexible Storage System and the battery-backup system, e.g., modifications
and conversions, are permitted only with the express written permission of SMA Solar Technology AG. Unauthorized
alterations will void guarantee and warranty claims and usually void the operating license. SMA Solar Technology AG
shall not be held liable for any damage caused by such changes. Any use of the SMA Flexible Storage System and the
battery-backup system other than that described in the Intended Use section does not qualify as appropriate. The
enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for future
reference and observe all instructions contained therein.
2.2 Safety Information
Danger to life due to incorrect installation and configuration
Incorrect installation of the products in the SMA Flexible Storage System can result in death or serious injury.
Incorrect configuration of the Sunny Island can result in death or serious injury.
This document is a supplement to the documentation that is provided with each product. This document does not replace
any locally applicable standards or directives.
• Read and observe the documentation supplied with the products.
• Observe all applicable local standards and directives.
Installation Manual FSS-UK-IA-en-20 7
3 Planning SMA Solar Technology AG
3 Planning
3.1 Planning the Installation of the SMA Flexible Storage System
Procedure Required information See
1. Connecting the
SMA Flexible Storage System
2. Basic configuration of the Sunny Island
During the first ten operating hours, set the
country data set of the Sunny Island to
AS4777.
3. Extended configuration of the Sunny Island – Section 6, page16
4. Commissioning the
SMA Flexible Storage System
Information and system
description
Circuitry overview Section 4, page10
Connecting the Sunny Island
inverters
Connecting the
Sunny Home Manager
– Quick Reference Guide
– Quick Reference Guide
Quick Reference Guide
"SMA Flexible Storage System"
Quick Reference Guide
"SMA Flexible Storage System"
"SMA Flexible Storage System"
"SMA Flexible Storage System"
8 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 3 Planning
3.2 Planning the Installation of the Battery-Backup System
Procedure Required information See
1. Connecting the battery-backup system Procurement of the automatic
transfer switch*
Information and system
description
Circuitry overview Section 5, page12
Connecting the Sunny Island
inverters
Connecting the
Sunny Home Manager
2. Basic configuration of the Sunny Island
During the first ten operating hours, set the
country data set of the Sunny Island to
AS4777.
3. Extended configuration of the Sunny Island – Section 6, page16
4. Changing the configuration of the PV
inverters
5. Commissioning the battery-backup system – Quick Reference Guide
– Quick Reference Guide
– Section 7, page17
Planning Guidelines
"SMA Flexible Storage System
with Battery-Backup Function"
Quick Reference Guide
"SMA Flexible Storage System
with Battery-Backup Function"
Quick Reference Guide
"SMA Flexible Storage System
with Battery-Backup Function"
"SMA Flexible Storage System
with Battery-Backup Function"
"SMA Flexible Storage System
with Battery-Backup Function"
* An automatic transfer switch for Great Britain and Northern Ireland can be purchased from enwitec electronic GmbH & Co.KG. When setting
up the automatic transfer switch independently, make suitable provision for external grid and PV system protection.
Installation Manual FSS-UK-IA-en-20 9
4 SMA Flexible Storage System (Self-Consumption Only) SMA Solar Technology AG
4 SMA Flexible Storage System (Self-Consumption Only)
4.1 Circuitry Overview of a Single-Phase SMA Flexible Storage System
Figure1: Circuitry overview of a single-phase SMA Flexible Storage System in Great Britain/Northern Ireland
10 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 4 SMA Flexible Storage System (Self-Consumption Only)
4.2 Circuitry Overview of a Three-Phase SMA Flexible Storage System
Figure2: Circuitry overview of a three-phase SMA Flexible Storage System in Great Britain/Northern Ireland
Installation Manual FSS-UK-IA-en-20 11
5 Battery-Backup System SMA Solar Technology AG
5 Battery-Backup System
5.1 Single-Phase Battery-Backup System
5.1.1 Automatic Transfer Switch of the Single-Phase Battery-Backup System
Figure3: Schematic diagram of the automatic transfer switch for a single-phase battery-backup system in Great Britain/Northern Ireland
12 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 5 Battery-Backup System
5.1.2 Circuitry Overview of the Single-Phase Battery-Backup System
Figure4: Circuitry overview of a single-phase battery-backup system in Great Britain/Northern Ireland
Installation Manual FSS-UK-IA-en-20 13
5 Battery-Backup System SMA Solar Technology AG
5.2 Three-Phase Battery-Backup System
5.2.1 Automatic Transfer Switch of the Three-Phase Battery-Backup System
Figure5: Schematic diagram of the automatic transfer switch for a three-phase battery-backup system in Great Britain/Northern Ireland
14 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 5 Battery-Backup System
5.2.2 Circuitry Overview of the Three-Phase Battery-Backup System
Figure6: Circuitry overview of a three-phase battery-backup system in Great Britain/Northern Ireland
Installation Manual FSS-UK-IA-en-20 15
6 Extended Configuration of the Sunny Island SMA Solar Technology AG
6 Extended Configuration of the Sunny Island
Requirement:
☐ The extended configuration must be performed within the first ten operating hours of the Sunny Island, otherwise an
SMA Grid Guard code is required in order to change grid-relevant parameters (application form for the SMA Grid
Guard code available at www.SMA-Solar.com).
Procedure:
1. Ensure that the country data set of the Sunny Island is set to AS4777 (for basic configuration of the Sunny Island,
see the Quick Reference Guide "SMA Flexible Storage System" or the Quick Reference Guide
"SMA Flexible Storage System with Battery-Backup Function" of the Sunny Island).
2. Switch to expert mode on the Sunny Remote Control (see the Sunny Island operating manual).
3. Select the parameter 232.02 GdVtgMin and set the minimum grid voltage to 172.5 V.
16 FSS-UK-IA-en-20 Installation Manual
SMA Solar Technology AG 7 Changing the Configuration of the PV Inverters
7 Changing the Configuration of the PV Inverters
In battery-backup systems, the active power of the PV inverters should be controllable depending on the frequency (see
the Planning Guidelines "SMA Flexible Storage System with Battery-Backup Function"). If your grid operator prohibits the
reduction of active power feed-in in case of overfrequency, you can also use the PV inverters without changing the
configuration. SMA Solar Technology AG recommends activating the frequency-dependent control of the PV inverters.
Requirements:
☐ The PV inverters are part of a battery-backup system and the auto matic transfer switch can disconnect the PV inverters
from the utility grid.
☐ The grid operator must be informed of the configuration change and have no objections to it.
☐ You must be authorized to change Grid Guard parameters. You can find the application form at
www.SMA-Solar.com in the download area of the relevant PV inverter.
☐ The firmware version of the PV inverters must support the frequency-dependent control of active power (for "PV
inverters", see the Planning Guidelines "SMA Flexible Storage System with Battery-Backup Function" at
www.SMA-Solar.com).
Procedure:
1. With existing PV systems, make sure that the firmware of the installed PV inverters supports frequency-dependent
active power reduction (see the Planning Guidelines "SMA Flexible Storage System with Battery-Backup Function"
at www.SMA-Solar.com).
2. Set the following parameters of the PV inverters to the specified value (see the documentation of the communication
product).
Parameter Value
P-WCtlHzMod
Operating mode of active power reduction in case of overfrequency P(f)*
P-WGra
Active power gradient, linear instantaneous power gradient configuration*
P-HzStr
Difference between starting frequency and grid frequency, linear instantaneous power
gradient configuration*
P-HzStop
Difference between reset frequency and grid frequency, linear instantaneous power gradient
configuration*
P-HzStopWGra
Active power gradient after reset frequency, linear instantaneous power gradient
configuration*
*Menu Equipment & device control system
On or WCtlHz
40
0.2
0.2
10
Installation Manual FSS-UK-IA-en-20 17
SMA Solar Technology
www.SMA-Solar.com
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