SMA SB 700 User Manual
Sunny Boy 700
String Inverter Sunny Boy 700
Installation Guide Version 1.1 SB700-11:SA2006
SMA Technologie AG Explanation of Symbols used in this Document
Explanation of Symbols used in this Document
This symbol indicates information that is essential for a trouble-free
and safe operation of the product. Please read these sections carefully in order to avoid any damages of the equipment and for optimal personal protection.
This symbol indicates information that is required for the optimal operation of
the product. Read these sections carefully in order to ensure an optimal operation of the product and all its features.
This symbol indicates an example.
Installation Guide SB700-11:SA2006 Page 3
Legal Restrictions SMA Technologie AG
Liability exclusion
The information contained in this documentation are the property of SMA Technologie AG. No part of this
documentation may be published without written permission from SMA Technologie AG. A reproduction for
internal purposes for the evaluation of the product or an appropriate application is permitted and does not
require authorization.
All information are based on our "General Terms and Conditions of Delivery of SMA Technologie AG”.
The content of this documentation is reviewed continuously and adjusted, if necessary. SMA Technologie
AG provides this documentation without exclusion of deviations and without warranty of completeness. You
will find the current version on the Internet at www.SMA.de or can obtain it via the usual sales channels.
Warranty or liability claims for all kinds are excluded in case of damages due to:
• Inappropriate use of the product
• Operation of the product in an improper environment
• Operation of the product without considering the relevant safety regulations
• Non-fulfillment of the warnings or safety instructions described in the documentation for the product
• Operation of the product under faulty conditions concerning security and protection
• Arbitrary changing of the product or the provided software
• Failure of the product due to interference of connected or contiguous devices out of legal limit values
• Disasters and force majeure
Software Licensing
The use of the provided software by SMA Technologie AG is subject to the following conditions:
The software may be reproduced for internal purposes and installed on any number of computers. Provided
source codes can be changed and adjusted on the company’s own authority according to the internal
purpose. Driver may be ported to other operating systems as well. No part of the source codes may be
published without written permission of SMA Technologie AG. Sublicensing of the software is not
acceptable.
Liability limitation: SMA Technologie AG disclaims liability for any direct or indirect consequential damages
arising from the use of the software produced by SMA Technologie AG. The same applies for the provision
and/or non-provision of support.
Provided software not produced by SMA Technologie AG is subject to the respective licensing and liability
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SMA Technologie AG
Hannoversche Strasse 1-5
34266 Niestetal
Germany
Tel. (+49) 5 61 95 22 – 0
Fax (+49) 5 61 95 22 – 100
www.SMA.de
E-Mail: info@SMA.de
© 2005 SMA Technologie AG. All rights reserved.
Page 4 SB700-11:SA2006 Installation Guide
SMA Technologie AG Table of Contents
Table of Contents
1 Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Unit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.2 External dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4 Installation requirements . . . . . . . . . . . . . . . . . . . . . 13
4.1 Installation site requirements . . . . . . . . . . . . . . . . . . . . . . . . .13
4.2 PV generator requirements. . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3 Low voltage grid 230 V (AC). . . . . . . . . . . . . . . . . . . . . . . . .15
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Mounting the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
5.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5.3 Setting the input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.4 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6 Opening and closing the Sunny Boy . . . . . . . . . . . . 33
6.1 Opening the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.2 Closing the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
7 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.1 Input voltage range 119 ... 250 V DC . . . . . . . . . . . . . . . . . .35
7.1.1 PV generator connection data . . . . . . . . . . . . . . . . . . . . .35
7.1.2 Grid connection data . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.2 Input voltage range 96 ... 200 V DC . . . . . . . . . . . . . . . . . . .36
7.2.1 PV generator connection data . . . . . . . . . . . . . . . . . . . . .36
7.2.2 Grid connection data . . . . . . . . . . . . . . . . . . . . . . . . . . .36
7.3 Input voltage range 73 ... 150 V DC . . . . . . . . . . . . . . . . . . .37
7.3.1 PV generator connection data . . . . . . . . . . . . . . . . . . . . .37
7.3.2 Grid connection data . . . . . . . . . . . . . . . . . . . . . . . . . . .37
7.4 Device description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
7.5 Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
8 Replacing the varistors. . . . . . . . . . . . . . . . . . . . . . . 41
9 Rating for a line circuit breaker. . . . . . . . . . . . . . . . . 45
10 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Installation Guide SB700-11:SA2006 Page 5
Table of Contents SMA Technologie AG
Page 6 SB700-11:SA2006 Installation Guide
SMA Technologie AG Foreword
1 Foreword
The installation of the Sunny Boy may only be done by qualified
technicians. The installer must be approved by the utility company.
Please read the installation guide carefully before you begin with
the installation. The installation of utility interactive power sources
must be compliant with all applicable regulations of the utility
company and with all applicable regulations and standards.
The Sunny Boy 700 is equipped with the SMA grid guard. This is a type of
independent disconnection device. It ensures that the Sunny Boy 700 complies
with the VDEW (Verband der Elektrizitätswirtschaft – German Electricity
Industry Association) regulations for the connection and parallel operation of
electrical power units to the low-voltage grid of the electricity supply company
and with DIN VDE 0126 (4.99) which is a part of these regulations.
This installation manual is intended solely for qualified electricians. Its aim is to help
install and set up SMA Sunny Boy SB 700 inverters quickly and correctly.
For detailed information on troubleshooting and on how to use the Sunny Boy 700,
including information about the different communication options, please see the
operating instructions.
The „Sunny Design“ tool will help to dimension and check the size of your strings with
respect to the inverter you intend to use. Further information about „Sunny Design“
is available at www.SMA.de.
If your Sunny Boy is equipped with a communication interface, you will find detailed
instructions for installation in the description of the communication interfaces (PiggyBacks), which has been delivered with the device.
If you require further information, please call the Sunny Boy hotline on the following
number:
+49 (0)561 95 22-499
Installation Guide SB700-11:SA2006 Page 7
Foreword SMA Technologie AG
Page 8 SB700-11:SA2006 Installation Guide
SMA Technologie AG Safety information
2 Safety information
Check your plant configuration and the
string sizing with „Sunny Design“
(available at www.SMA.de) or with the
Sunny Boy Hotline before you start with
the installation. Exceeding the
specifications with the input voltage will
destroy the Sunny Boy. Overvoltage on
Betrieb
Photovoltaik-Stringwechselrichter
Operation
Photovoltaicstringinverter
Erdschluss
Earth
F
ault
Störung
Failure
Work on the Sunny Boy with the lid removed must be carried out
by a qualified electrician. Hazardous and even lethal voltages can
be encountered within the enclosure. Before working on the Sunny
Boy with the lid removed, the AC and DC voltages MUST be
disconnected from the Sunny Boy and it must be sure that all
capacitors are discharged.
The Sunny Boy must be disconnected from the mains and
precautions must be taken to prevent the grid being reconnected.
In addition, the connections to the PV generator must be
disconnected.
the DC side can even cause dangerous
explosions of the Sunny Boys input
capacitors and explosions of the
electrolytes coming from the exploded
capacitors.
After isolating the AC and DC voltage you must wait approx. 30
minutes for the capacitors in the Sunny Boy to discharge. Only then
is it safe to open the unit by removing the lid. You must also make
sure that no voltage is present in the device.
The electronics inside your Sunny Boy 700 is vulnerable in terms of
electrostatic discharge. Be sure to be connected to ground (e.g. the
enclosure of the Sunny Boy) before handling anything within the
enclosure of the Sunny Boy.
This appliance is not intended for use by young children or infirm
persons unless they have been adequately supervised by a
responsible person to ensure that they can use the appliance
safely.
Young children should be supervised to ensure that they do not
play with the appliance.
Installation Guide SB700-11:SA2006 Page 9
Safety information SMA Technologie AG
Page 10 SB700-11:SA2006 Installation Guide
SMA Technologie AG Overview
Vari
k
3 Overview
3.1 Unit description
The following diagram gives a schematic overview of the various components and
connection points inside the Sunny Boy 700 with the lid removed:
stors
page 41
PV input plug
(DC) page 26
et for communication
Soc
(RS232, RS485, NLM PiggyBack, Radio)
PE
PE (protective
earth) connecting
cable for lid
Socket for
display unit
Terminal block for
setting the input
voltage range
Slots for setting the
input voltage range
Operating status
LEDs
Communications
N
L
connector
Connection plug
(AC) page 21
Installation Guide SB700-11:SA2006 Page 11
Overview SMA Technologie AG
3.2 External dimensions
180 mm
Betrieb
Operation
Erdschluss
Photovoltaik-Stringwechselrichter
Photovoltaic
EarthFault
Störung
s
tring
i
nverter
Failure
322 mm
290 mm
Page 12 SB700-11:SA2006 Installation Guide
SMA Technologie AG Installation requirements
4 Installation requirements
Please check that all of the conditions listed below are met before installing and
setting up the Sunny Boy.
4.1 Installation site requirements
The Sunny Boy 700 weighs 16 kg. Please take this weight into
account when choosing the installation site and method of
installation.
The ambient temperature must be within -25 °C to +60 °C.
The Sunny Boy 700 should be installed in a place where it is not
exposed to direct sunlight. An increased ambient temperature can
16 kg
The Sunny Boy is designed to be mounted on a vertical wall. For an optimum energy
yield and the most convenient operation, vertical installation at eye-level is
preferable. In case it is absolutely necessary to tilt the Sunny Boy to the back the
maximum angle is 45 °. If installing the unit outdoors, make sure that it is not slanting
forwards.
reduce the yield of the PV system.
It is not recommended to install the Sunny Boy lying on the back side with the lid
facing upwards.
min. 45°
Mount the Sunny Boy in a vertical position or
with a slight angle to the back.
Installation Guide SB700-11:SA2006 Page 13
Do not mount the Sunny Boy with an
angle to the front or on the back.
Installation requirements SMA Technologie AG
When choosing the installation site, be sure to note the
following:
Unintentionally pulling out the DC plug connector under load can
damage the plug and result in bodily injury or death! Install the
Sunny Boy in such a way that it is not possible (e.g. for children) to
unplug the DC plug connector unintentionally.
Individual components in the Sunny Boy can reach a temperature
of more than 60 °C.
Do not install the Sunny Boy on flammable construction materials,
in areas where highly inflammable materials are stored or in
potentially explosive environments!
When choosing the installation site, ensure there is enough space for heat to
dissipate. Under normal conditions, the following guidelines should be applied for
the space to be kept clear around the Sunny Boy 700:
Minimum clearance
Sides 20 cm
20
cm
Top 20 cm
Underneath 20 cm
In front 5 cm
20 cm
Photovoltaik-Stringwechselrichter
Photovoltaic
Betrieb
Operation
Erdschluss
Earth
F
ault
Störung
5
s
tring
i
nverter
Failure
cm
20
cm
20 cm
In domestic installations, the unit should not be
mounted on plasterboard walls or similar as otherwise
audible vibrations are likely to result.
We recommend securing the unit to a solid surface.
The Sunny Boy 700 will emit a slight noise during
operation. This noise can be annoying when the Sunny
Boy is installed within a living area.
Page 14 SB700-11:SA2006 Installation Guide
SMA Technologie AG Installation requirements
4.2 PV generator requirements
The Sunny Boy 700 is designed to be connected to up to two strings (PV modules
wired in series) having a homogenous structure (modules of the same type, identical
orientation, tilt and number).
The „Sunny Design“ tool will help to dimension and check the size of your string with
respect to the inverter you intend to use. Information about the „Sunny Design“ tool
is available at www.SMA.de.
The unit has four DC plug connectors (two for each string) for connecting the PV
generators. The connecting cables from the PV generators must also be fitted with this
type of plug connector. A pre-assembled set for connecting the free cable ends from
a string is available as an optional accessory. The SMA order codes for the various
connectors are as follows:
• Multi-contact 3 mm: "SWR-MC"
• Multi-contact 4 mm: "MC-SET"
• Tyco: "TYCO-SET"
Limit values for DC input
Max. voltage 250 V (DC)
Max. input current 10 A (DC)
4.3 Low voltage grid 230 V (AC)
The Sunny Boy must have a three-conductor connection to the mains (live (L), neutral
(N), protective earth (PE)).
The grid connection terminals on the AC connection
socket included in the accessories kit can take wires
with a cross-section of up to 2.5 mm². The accessories
Cable
diameter
o
11 ... 25 mm
Wire
cross-section
max. 2,5 mm²
kit also contains a PG13.5 AC connection socket for
connecting cables with a diameter between 9 mm and
13.5 mm, while the PG16 connection socket is used for
cables with a diameter up to a maximum of 17 mm. For detailed instructions, see
sections "Connecting the AC output with PG13.5" (page 22) and "Connecting the
AC plug with PG16" (page 24).
Installation Guide SB700-11:SA2006 Page 15
Installation requirements SMA Technologie AG
We recommend using a 16 A line circuit
breaker to protect the power circuit. No
loads should be connected to this power
circuit.
Photovoltaik-Stringwechselrichter
Photovoltaic
Betrieb
Operation
Erdschluss
Earth
F
ault
Störung
stringi
nverter
Failure
16A
Rating for a line circuit breaker in a photovoltaic electrical
power unit operated in parallel with the low-voltage grid
Various factors should be taken into account when selecting line circuit breakers.
These include, for example:
• The type of cable used (conductor material and insulation)
• Ambient temperatures affect the cables (higher temperatures result in a reduced
maximum current load)
• Method of routing the cable (reduces the ampacity of the conductor)
• Bundling cables together (reduces the ampacity of the conductor)
• Loop impedance [Z] (in the event of a body contact this limits the current that can
flow and therefore determines the response behaviour of the circuit breaker)
• Adequate clearance between the circuit breakers in order to avoid excessive
heating (automatic circuit breakers trip earlier when they are warmer)
• Selectivity
• Protection class of the connected load (VDE 0100, part 410), Protection against
electric shock
Please have a look at chapter 9 "Rating for a line circuit breaker" (page 45).
1
The following standards
should be followed in all cases:
• DIN VDE 0298-4 (Cable routing and current-carrying capacity)
• DIN VDE 0100; part 430 (Protective measures; protection of cable and
cords against overcurrent)
• DIN VDE 0100; part 410 (Protective measures; protection against electric
shock)
1. The standards mentioned above are to be only used as a guideline for your
installation. They apply for installations in Germany. Please note that other
standards will apply for different countries throughout the world.
Page 16 SB700-11:SA2006 Installation Guide
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