Table of Contents
SMA Solar Technology AG
Operating manual
3
MC-BOX-12-3-20-BE-en-13
Table of Contents
1
Information on this Document.....................................................................................................
5
1.1
Validity .............................................................................................................................................................
5
1.2
Target Group ...................................................................................................................................................
5
1.3
Levels of Warning Messages..........................................................................................................................
5
1.4
Symbols in the Document................................................................................................................................
5
1.5
Typographies in the Document .......................................................................................................................
6
1.6
Designation in the document ..........................................................................................................................
6
1.7
Additional Information.....................................................................................................................................
6
2
Safety ............................................................................................................................................
7
2.1
Intended Use....................................................................................................................................................
7
2.2
IMPORTANT SAFETY INSTRUCTIONS .........................................................................................................
8
3
Scope of Delivery ......................................................................................................................... 10
4
Product Overview ........................................................................................................................ 11
4.1
Product Description.......................................................................................................................................... 11
4.2
Symbols on the Product................................................................................................................................... 12
4.3
Grounding in the Multicluster System............................................................................................................. 12
4.4
System Structure............................................................................................................................................... 14
5
Mounting....................................................................................................................................... 15
5.1
Requirements for Mounting............................................................................................................................. 15
5.2
Preparing the Mounting Location ................................................................................................................... 16
5.3
Transporting and Mounting the Product ........................................................................................................ 17
6
Electrical Connection .................................................................................................................... 19
6.1
Overview of the Connection Area.................................................................................................................. 19
6.1.1
Interior View ..................................................................................................................................................... 19
6.1.2
View from Below .............................................................................................................................................. 20
6.2
Installing the Multicluster-Box without Grid-Connect-Box or NA-Box........................................................... 21
6.3
Connecting the Generator .............................................................................................................................. 21
6.4
Utility Grid Connection.................................................................................................................................... 22
6.4.1
Utility Grid Connection Options...................................................................................................................... 22
6.4.2
Connecting the NA-Box / Grid-Connect-Box ................................................................................................ 22
6.5
Connecting the Loads...................................................................................................................................... 23
6.6
Connecting the PV System .............................................................................................................................. 24
6.7
Connecting the Sunny Island .......................................................................................................................... 25
6.8
Grounding the Multicluster System................................................................................................................. 25
6.9
Connecting the Control Cables ...................................................................................................................... 26
6.9.1
Assignment of Spring-Cage Terminals ............................................................................................................ 26
6.9.2
Connecting the Control Cables of the Sunny Island Inverters....................................................................... 27
6.9.3
Connecting Supply Voltage for Grounding Contactor.................................................................................. 27
6.9.4
Connecting the Control Cables to the Grid-Connect-Box.............................................................................. 27
6.9.5
Connecting the Control Cables to the NA-Box .............................................................................................. 28
6.10 Connecting the Data Cable ............................................................................................................................ 28
7
Preparing for Commissioning ..................................................................................................... 30
8
Disconnect from voltage sources ................................................................................................ 31
9
Periodic Actions ............................................................................................................................ 32
Summary of Contents for MULTICLUSTER-BOX 12
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