SMA Solar Technology FLEXIBLE STORAGE SYSTEM Guía del usuario

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

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 SMAFlexibleStorageSystem with battery-backup function with the following device

types:

• SI4.4M-13 (SunnyIsland 4.4M) from firmware version 3.01.xx.R

• SI6.0H-13 (SunnyIsland 6.0H) from firmware version 3.01.xx.R

• SI8.0H-13 (SunnyIsland 8.0H) from firmware version 3.01.xx.R

• HM-20 (SunnyHomeManager 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. SMAFlexibleStorageSystem).

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

SMAFlexibleStorageSystem with Battery-Backup Func-

tion Battery-backup system

SMA Speedwire Speedwire

Sunny Boy, Sunny Tripower PV inverter

SunnyPlaces, SunnyPortal, SunnyHomeManager 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

"SMASmartHome"

The System Solution for Greater Independence

Planning Guidelines

"SMAFlexibleStorageSystem with Battery Backup Function" Planning Guidelines

SUNNYISLAND 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 SMAFlexibleStorageSystem 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 SunnyIsland 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 SMAEnergyMeter only. An SMAEnergyMeter 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 SunnyIsland. 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 SunnyIsland

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

"SMAFlexibleStorageSystem with Battery Backup Function" at www.SMA-Solar.com). This automatic transfer switch

is not part of the SunnyIsland 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 "SMAFlexibleStorageSystem 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 SunnyIsland.

The maximum permissible DC input voltage of the SunnyIsland must not be exceeded. A battery fuse must be installed

between the battery and the SunnyIsland.

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 SunnyIsland (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 SunnyIsland (for

technical data see the SunnyIsland operating manual).

An DC supply grid may not be established with the SunnyIsland.

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 1500V 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

1500V.

• 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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