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Installation manual
SMA Backup 1P
BU-SBSE-1P-50
eManual
ENGLISH
SMABackup1P-IA-en-10 | Version 1.0

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  • Page 1 Installation manual SMA Backup 1P BU-SBSE-1P-50 eManual ENGLISH SMABackup1P-IA-en-10 | Version 1.0...
  • Page 2: Legal Provisions

    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.
  • Page 3: Table Of Contents

    SMA Solar Technology AG Table of contents Table of contents Information on this Document..................... Validity................................Target Group ..............................Content and Structure of this Document......................Levels of Warning Messages.......................... Symbols in the Document..........................Typographies in the document........................Designations in the Document.........................
  • Page 4 Table of contents SMA Solar Technology AG Changing parameters............................30 Updating the inverter firmware version ......................30 Setting parameters for battery-backup operation..................30 Testing battery-backup operation ........................31 Closing the enclosure........................33 Troubleshooting ........................... 34 10 Decommissioning the Product..................... 35 11 Disposal ............................
  • Page 5: Information On This Document

    The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills: • Knowledge of how to safely disconnect SMA inverters • Knowledge of how an inverter works and is operated • Knowledge of how batteries work and are operated •...
  • Page 6: Typographies In The Document

    1 Information on this Document SMA Solar Technology AG Symbol Explanation Required result ☑ Example Typographies in the document Typography Example bold • Messages • Connect the insulated conductors to the terminals X703:1 to • Terminals X703:6. • Elements on a user interface •...
  • Page 7: Additional Information

    Additional Information When installing the automatic transfer switching device, also observe the manuals for the other components used in the system. Additional information is available at www.SMA-Solar.com. Title and information content Type of information Operating manual SUNNY BOY SMART ENERGY 3.6 / 4.0 / 5.0 / 6.0 / Operating manual 8.0 / 9.9...
  • Page 8: Safety

    SMA Backup 1P is an automatic transfer switching device that enables single-phase battery-backup operation in the SMA Home Energy Solution with the SMA inverters listed below. In the event of a power failure, the hybrid inverter ensures that SMA Backup 1P automatically switches to battery-backup operation and the hybrid inverter can supply the entire household with power from the battery and the PV system.
  • Page 9 SMA Solar Technology AG 2 Safety DANGER Danger to life due to electric shock when live components or conductors within the system are touched The neutral conductor of the product is not switched depending on the configuration. As a result, capacitive leakage currents from the PV modules may flow to the neutral conductor and the neutral conductor is live if the connection to the grounding conductor is interrupted.
  • Page 10: Scope Of Delivery

    3 Scope of Delivery SMA Solar Technology AG 3 Scope of Delivery Position Quantity Designation Automatic transfer switching device Wall mounting bracket Screw (M4x16) for securing the automatic transfer switching device to the wall mounting bracket M32x1.5 cable gland with cable support sleeve for the AC connec- tions M32x1.5 cable gland with four-hole cable support sleeve with 2 dif-...
  • Page 11: Product Overview

    SMA Solar Technology AG 4 Product overview 4 Product overview Information about the battery-backup system 4.1.1 Purpose of a Battery-Backup System Any time a grid failure happens, a PV system disconnects from the utility grid and the loads connected to the household grid are no longer supplied with energy.
  • Page 12: System Overview

    4 Product overview SMA Solar Technology AG System Overview Figure 1: System overview with SMA Backup 1P SMABackup1P-IA-en-10 Installation manual...
  • Page 13: Circuitry Overview

    SMA Solar Technology AG 4 Product overview Circuitry Overview Installation manual SMABackup1P-IA-en-10...
  • Page 14: Product Description

    4 Product overview SMA Solar Technology AG Product Description Figure 2: Design of the product Position Designation Fastening for attachment to the wall mounting bracket Holes for enclosure opening Fuses Installation cover Type label SMABackup1P-IA-en-10 Installation manual...
  • Page 15: Mounting

    1. Set the position for the automatic transfer switching device. Consider the possible cable route. The automatic transfer switching device can be installed to the right or left of the inverter, or under the inverter. SMA Solar Technology recommends installing the automatic transfer switching device under the inverter.
  • Page 16: Optional: Remove Lid

    5 Mounting SMA Solar Technology AG 5. Secure the wall mounting bracket horizontally using screws and washers. 6. Hang the automatic transfer switching device onto the wall mounting bracket from above. 7. Make sure that the automatic transfer switching device is correctly mounted on the wall mounting bracket.
  • Page 17: Removing The Installation Cover

    SMA Solar Technology AG 5 Mounting Procedure: 1. Open the lid of the enclosure. To do this, press on the left side of the lid with your hand. 2. Open the closing mechanism. To do this, press the two latches down or up.
  • Page 18 5 Mounting SMA Solar Technology AG 3. Loosen the 4 screws (TX20) for fastening the installation cover. 4. Remove the installation cover. SMABackup1P-IA-en-10 Installation manual...
  • Page 19: Electrical Connection

    SMA Solar Technology AG 6 Electrical Connection 6 Electrical Connection Removing the grounding conductor connection on the inverter Procedure: 1. Disconnect the inverter from voltage sources (see inverter manual). 2. If present, remove the grounding conductor connection between N and the busbar .
  • Page 20: Requirements On The Ac Cables For The Connections To The Battery Back-Up Loads And To The Utility Grid

    ☐ The cable and conductor cross-sections must always be dimensioned according to the local and national directives and within the range specified by the manufacturer (SMA Solar Technology AG)." If the manufacturer (SMA Solar Technology AG) requires a higher conductor cross-section than the standard, the range of the manufacturer must be observed.
  • Page 21: Enclosure Opening

    SMA Solar Technology AG 6 Electrical Connection Enclosure opening Position Cable AC cable PLC IN and PLC OUT AC cable for the AC connection on the inverter AC cable for connection of backup loads AC cable for connection to the utility grid...
  • Page 22: Overview Of The Connection Area

    6 Electrical Connection SMA Solar Technology AG Overview of the Connection Area Position Designation A, B, C Connection for the AC cable for the connection on the inverter Connection for the AC cable PLC IN Connection for the AC cable PLC OUT...
  • Page 23: Tn-C-S Grid Configuration

    SMA Solar Technology AG 6 Electrical Connection TN-C-S grid configuration If the neutral conductor has to be opened during backup operation, the automatic transfer switching device is ready for use without any additional configuration of the pre-installed cables. If the neutral conductor needs to remain connected in backup operation, the automatic transfer switching device must be configured as described below.
  • Page 24 6 Electrical Connection SMA Solar Technology AG 4. Connect the grounding cable to the connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm). 5. Connect conductor N for connection to the utility grid to the GRID N connection on the automatic transfer switching device.
  • Page 25 SMA Solar Technology AG 6 Electrical Connection 9. Connect conductor N to the INV N connection on the fuse block in the automatic transfer switching device. 10. Connect conductor L1 to the INV L1 connection on the fuse block in the automatic transfer switching device.
  • Page 26: Optional: Connecting Residual-Current Device

    6 Electrical Connection SMA Solar Technology AG Optional: Connecting residual-current device In some countries, a residual-current device must be installed on the supply side of the inverter. You have the option of installing a residual-current device in the enclosure of the automatic transfer switching device. Space is provided for this on the DIN rails.
  • Page 27 SMA Solar Technology AG 6 Electrical Connection Requirements: ☐ There is sufficient space for the fuse block in the enclosure of the automatic transfer switching device. Procedure: 1. Disconnect the inverter from voltage sources (see inverter manual). 2. Switch off the battery (see manual from the battery manufacturer).
  • Page 28: Optional: Connecting Additional Energy Meter Ct And Additional Miniature Circuit Breakers

    6 Electrical Connection SMA Solar Technology AG Optional: Connecting additional Energy Meter CT and additional miniature circuit breakers You have the option of expanding the automatic transfer switching device with an Energy Meter CT and additional miniature circuit-breakers. Space is provided for this on the DIN rails.
  • Page 29: Placing A Notice About Backup Operation On The Meter Cabinet

    SMA Solar Technology AG 6 Electrical Connection 3. Disconnect the automatic transfer switching device from voltage sources. 4. Connect Energy Meter CT or additional miniature circuit breakers. 5. Pull the cables as a test to ensure that all conductors are secured in the terminals.
  • Page 30: Operation

    A part of a new installation, the parameters are set to the default values recommended by SMA Solar Technology AG. If it is not a new installation, set the following parameters to the default values recommended by SMA Solar Technology AG Changing parameters.
  • Page 31: Testing Battery-Backup Operation

    SMA Solar Technology AG 7 Operation Channel Name Settings Description Operation.BckSwOnDl Minimum time that a grid 0 s to Time after a grid failure before switch- fault ought to be gone for, be- 600 s ing to battery-backup operation. fore an automatic transition 5 s is set by default.
  • Page 32 7 Operation SMA Solar Technology AG 2. Wait for the set time in the Operation.BckSwOnDl parameter (Minimum time that a grid fault ought to be gone for, before an automatic transition from backup to feed-in operation is initiated.). ☑ The automatic transfer switching device switches to battery-backup operation with an audible click.
  • Page 33: Closing The Enclosure

    SMA Solar Technology AG 8 Closing the enclosure 8 Closing the enclosure Requirements: ☐ The automatic transfer switching device and inverter must be de-energized. Procedure: 1. Check that the miniature circuit breaker of the fuse is switched on (see Section 6.4, page 22).
  • Page 34: Troubleshooting

    9 Troubleshooting SMA Solar Technology AG 9 Troubleshooting Behavior Possible causes and remedy The residual-current device trips. • The grounding conductor connection between N and the busbar in the inverter has not been removed. Remove grounding conductor connection (see Section 6.1, page 19).
  • Page 35: Decommissioning The Product

    SMA Solar Technology AG 10 Decommissioning the Product 10 Decommissioning the Product Procedure: 1. Disconnect the inverter from voltage sources (see inverter manual). 2. Switch off the battery (see manual from the battery manufacturer). 3. Disconnect the automatic transfer switching device from voltage sources.
  • Page 36: Disposal

    11 Disposal SMA Solar Technology AG 11 Disposal The product must be disposed of in accordance with the locally applicable disposal regulations for waste electrical and electronic equipment. SMABackup1P-IA-en-10 Installation manual...
  • Page 37: Technical Data

    SMA Solar Technology AG 12 Technical Data 12 Technical Data 12.1 General Data Width x height x depth (with wall mounting bracket) 506 mm x 260 mm x 236 mm Width x height x depth (without wall mounting bracket) 506 mm x 260 mm x 226 mm Weight 6.16 kg...
  • Page 38: Switchover Times (Adjustable Parameters)

    12 Technical Data SMA Solar Technology AG 12.4 Switchover times (adjustable parameters) Parallel grid operation in battery-backup system 0 s to 600 s (default: 5 s) Battery-backup system in parallel grid operation 0 s to 600 s (default: 5 s) SMABackup1P-IA-en-10 Installation manual...
  • Page 39: Contact

    SMA Solar Technology AG 13 Contact 13 Contact If you have technical problems with our products, please contact the SMA Service Line. The following data is required in order to provide you with the necessary assistance: • Device type • Serial number •...
  • Page 40 www.SMA-Solar.com...

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Bu-sbse-1p-50

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