Sunny Boy SWR 850 Parts list manual

Sunny Boy
Technical Description
Edition 4.1
SWR 700 and SWR 850
The String Inverter for Photovoltaic Plants
SWR700-14:EE0698

Sunny Boy Technical Description
SWR700-14:EE - 2 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
Alteration Review
Document-
Number
SWR700
Version
and Alteration
Review1)
Comments Author
-12:EE1296 2.0 A First Edition
-13:EE1497 3.0 C Extension to SWR 850
-13:EE3397 3.1 C Recommendation for fuses
Modification of parameter lists
-14:EE0698 4.0 C
1) A: Alterations due to faulty documents or improvement of the documentation
B: Alterations maintaining full or upward compatibility
C: Alterations limiting or excluding compatibility
Name Date Signature
Release
SWR700-14:EE - 3 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
Explanation of Symbols (used in this Document)
To enable you to make optimal use of this manual and safe use of the device during
commissioning, operation and maintenance, please not the following description of
symbols.
This symbol indicates a fact the non-observation of which may cause a
loss of comfort or an impairment of the function.
Example: “Do the following in order to keep the string voltage free“.
This symbol indicates a fact the non-observation of which may lead to da-
mages of parts or to the endangering of people.
Example: “Disconnect the AC and DC cabling before opening the device“.
This symbol indicates an example.
SWR700-14:EE - 4 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
Content
1 Review......................................................................................................................7
1.1 General Information...........................................................................................7
1.2 Who Should Read Which Chapters?.................................................................7
1.3 What to do in Case of Transportation Damages................................................8
2 System Description...................................................................................................9
2.1 Function of a Mains-Connected Solar PV Plant ................................................9
2.2 Key Component Inverter ...................................................................................9
2.3 The String Inverter SWR 700 and SWR 850 ...................................................11
2.3.1 Design......................................................................................................11
2.3.2 Mains Disconnection Device ....................................................................13
2.3.3 Diagnosis and Communication.................................................................16
3 Installation ..............................................................................................................18
3.1 Placement of the SWR 700 resp. SWR 850....................................................18
3.2 Delivered Mounting and Installation Parts .......................................................20
3.3 Device Installation ...........................................................................................21
3.3.1 General Information .................................................................................21
3.3.2 Mounting Preparations .............................................................................21
3.3.3 Wall Mounting ..........................................................................................22
3.4 Electrical Conntection......................................................................................22
3.4.1 General Information .................................................................................22
3.4.2 Connecting Preparations..........................................................................23
3.4.3 Cable Connection.....................................................................................31
4 Putting into Operation.............................................................................................41
4.1 General Information.........................................................................................41
SWR700-14:EE - 5 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
4.2 Before the First Switching On..........................................................................41
5 Operation and Failure Display ................................................................................43
5.1 Operation Display............................................................................................44
5.2 Failure Display.................................................................................................46
6 Technical Data........................................................................................................52
6.1 SWR 700 .........................................................................................................52
6.2 SWR 850 .........................................................................................................58
7 Sunny Data.............................................................................................................63
7.1 General Information.........................................................................................63
7.2 Data Transmission ..........................................................................................63
7.2.1 Data Transmission via Mains Lead ..........................................................63
7.2.2 Data Transmission via Separate Data Line ..............................................64
7.3 Diagnosis and Communication........................................................................67
7.4 Graphical User Interface using MS Windows ..................................................68
8 Guaranty Regulations and Liability .........................................................................69
9 Enclosures..............................................................................................................72
9.1 Supplement 1: Certificates for SWR 700.........................................................72
9.2 Supplement 2: Certificates for SWR 850.........................................................76
9.3 Supplement 3: Boring jig .................................................................................80
SWR700-14:EE - 6 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
1 Review
1.1 General Information
With the Sunny Boy (SWR 700 resp. SWR 850), you have purchased the technically
most advanced inverter for the mains connection of photovoltaic plants at present. The
SWR 700/850 complies with all VDEW (Vereinigung Deutscher Elektrizitätswerke) regu-
lations -Regulations for the Parallel Operation of Private Generating Plants with the Low
Voltage Grid of the Power Utility. This includes the compliance of the SWR 700/850
with the regulations of the Berufsgenossenschaft der Feinmechanik und Elektrotechnik
regarding the "Automatic Disconnecting Device for Private Generating Plants" (The
certification is included in the supplements). Furthermore, the SWR 700/850
complies with the relevant harmonized European regulations according to the EMVG
(EMI Regulations) and therefore has a CE conformity certificate (v. supplements).
Presently you are reading the Technical Description of the Photovoltaic Inverter SWR
700 resp. SWR 850 (Sunny Boy), and you are probably surprised at its size. Don't
bother, you do not have to read all chapters; this Technical Description shall provide all
necessary information concerning function, installation, and operation of the inverter as
well to the installer as to the user, and it shall give some hints regarding the extension of
solar plants.
1.2 Who Should Read Which Chapters?
Reading this manual is necessary mostly for the installer, because the inverter starts
automatically, without any user action. This Technical Description contains important
information concerning the installation and the putting into operation of the device, besi-
des other topics. In any case, the installer should read at least chapters 3 to 6 of this
description carefully before starting to work, and chapter 8, Guarantee Regulations and
Liability.
SWR700-14:EE - 7 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
The user should read at least chapters 1 and 5. As an aid for fast finding the desired
information, we recommend to read the following chapters.
Installer: Chapter 1, chapter 3, chapter 4, chapter 5, chapter 6,
chapter 8
User: Chapter 1, chapter 2, chapter 5, chapter 7, chapter 8
1.3 What to do in Case of Transportation Damages
Before delivering our products, we thoroughly check their orderly state.
Transportation damages may occur in spite of the good packaging, which, by the way,
can be recycled. In most cases the carrier is responsible for these.
Please examine the delivered string inverter thoroughly. In case you find any packing
damages suggesting inverter damages, or in case you even find damages or deficien-
cies of the inverter itself, please inform the carrier immediately.
If necessary, your distributor or the company SMA will support you. In any case, a notifi-
cation of damages must be submitted to the carrier in writing within six days from the
receipt of the goods.
SWR700-14:EE - 8 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
2 System Description
The reduction of CO2and other power generating emissions polluting the environment
becomes more and more pressing. Regenerative power generation can be an important
contribution to this. Especially the direct conversion of solar radiation to electric power
(Photovoltaic) has an eminent, worldwide importance.
2.1 Function of a Mains-Connected Solar PV Plant
The DC generated in a solar generator is converted by a so-called "Mains Connection
Device" or "Inverter" to mains-conforming AC, and is supplied directly to the household
mains, which in turn is connected to the public power supply grid.
In the house it supplies all connected electricity consumers (household appliances,
lamps, etc.). In case of insufficient solar power supply, additional power is automatically
taken from the public grid to secure the operation of all connected devices. Surplus solar
power not needed in the household is supplied directly to the public grid, and is made
available for other electricity consumers in this way.
2.2 Key Component Inverter
The DC from the solar cells must be converted to mains-synchronous AC, before it is
supplied to the household mains connected with the public grid. The string inverter con-
nects only a small number of solar modules in series to the public grid (this is called a
string). In this way, even quite large solar generators can be composed from many small
strings, each equipped with a string inverter of its own. The interconnection resp. power
collection takes place on AC side. This means that the expensive DC distribution of for-
mer photovoltaic plants can be omitted, and that additional planning is nearly not neces-
sary any more for the installation of such plants.
SWR700-14:EE - 9 - SMA Regelsysteme GmbH

Sunny Boy Technical Description
The string inverter to be installed for this purpose should meet the following re-
quirements:
• High efficiency, especially in the partial load range
• Microprocessor-equipped operation control for automatic working point opti-
mization of the solar generator (Maximum Power Point Tracking)
• Personnel protection (avoidance of dangerous contact voltages) during instal-
lation and operation
• Operation in accordance with the regulations of the power utilities
• Avoidance of reactive power (phase shift between current and voltage) and
harmonic currents
• Fully automatic operation
• Simple installation (One-Man installation, standard terminals, etc.)
• Low investment
• Modularity for later plant enlargement
• User information concerning the most important operating states via integrated
LEDs
• Automatic failure diagnosis and indication via LEDs
• Simple solar generator design, simple cable layout
• Transmission of measured values and operating states via mains lead to a PC
The string inverter SWR 700 resp. SWR 850 ideally meets the above mentioned requi-
rements.
SWR700-14:EE - 10 - SMA Regelsysteme GmbH