SMA SB 3300-11 Installation
EN
PV Inverter
SUNNY BOY 3300/3800
Installation Manual
SB33-38-11-IA-en-62 | IMEN-SB33-38-11 | Version 6.2
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.1 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.2 Symbols on the Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Mounting the Inverter with the Wall Mounting Bracket . . . . . . 18
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 21
5.2.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2.2 Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 23
5.3.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.3.2 Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 25
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Table of Contents SMA Solar Technology AG
5.3.3 Connecting Additional Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.4 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5.1 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5.2 Assembling the DC Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.5.3 Opening the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.5.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.7 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 38
5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.7.2 Setting Stand-alone Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.2 Display Messages During the Startup Phase . . . . . . . . . . . . . . 40
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.2 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 45
8.1 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2 Checking the Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2.1 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.2.3 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.3 Checking the Electronic Solar Switch for Wear . . . . . . . . . . . . 49
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.1 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
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SMA Solar Technology AG Table of Contents
9.3 Red LED is Glowing Continuously. . . . . . . . . . . . . . . . . . . . . . . 56
9.3.1 Checking the PV Array for Ground Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.1 Disassembling the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.2 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.3 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.4 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.1 DC/AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.1.1 Sunny Boy 3300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.1.2 Sunny Boy 3800. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
11.2 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.2.1 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.2.2 Country Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.2.3 Climatic Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.2.4 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.2.5 Electronic Solar Switch (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.2.6 Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.2.7 Distribution Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
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Table of Contents SMA Solar Technology AG
6 SB33-38-11-IA-en-62 Installation Manual
SMA Solar Technology AG Information on this Manual
1 Information on this Manual
1.1 Validity
This manual describes the assembly, installation, commissioning and maintenance of the following
SMA inverters:
• Sunny Boy 3300 (SB 3300-11) from firmware version 3.02/3.02.
• Sunny Boy 3800 (SB 3800-11) from firmware version 3.05/3.05.
Keep this manual in a convenient place for future reference.
1.2 Target Group
This manual is intended for electrically qualified persons. The tasks described in this manual may be
performed by electrically qualified persons only.
1.3 Additional Information
You will find further information on special topics such as designing a miniature circuit-breaker or the
description of the operating parameters in the download area at www.SMA.de/en.
Refer to the user manual provided for detailed information on operating the inverter.
Installation Manual SB33-38-11-IA-en-62 7
Information on this Manual SMA Solar Technology AG
1.4 Symbols Used
The following types of safety precautions and general information appear in this document:
DANGER!
DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING!
WARNING indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION!
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE!
NOTICE indicates a situation which, if not avoided, can result in property damage.
Information
Information provides tips that are valuable for the optimum operation of your product.
☑ This symbol indicates the result of an action.
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SMA Solar Technology AG Safety
2 Safety
2.1 Intended Use
The Sunny Boy is a PV inverter which converts the DC current of the PV array to AC current and feeds
it into the power distribution grid.
Principle of a PV plant with this Sunny Boy
The Sunny Boy may only be operated with PV arrays (PV modules and cabling) of protection class II.
Do not connect any sources of energy other than PV modules to the Sunny Boy.
When designing the PV plant, ensure that the values comply with the permitted operating range of all
components at all times. The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign)
will assist you. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Boy. You must also ensure that all measures recommended by the module manufacturer for
long-term maintenance of the module properties are taken (see also Technical Information "Module
Technology" in the download area of www.SMA.de/en).
Do not use the Sunny Boy for purposes other than those described here. Alternative uses,
modifications to the Sunny Boy or the installation of component parts not expressly recommended or
sold by SMA Solar Technology AG shall void any warranty claims and the operation permission.
Installation Manual SB33-38-11-IA-en-62 9
Safety SMA Solar Technology AG
2.2 Safety Precautions
DANGER!
Danger to life due to high voltages in the inverter
• All work on the inverter may only be carried out by an electrically qualified person.
• Physically or mentally challenged persons may only perform activities on the inverter
following proper instruction and under supervision.
• Children must not play with the inverter. Children must not have access to an inverter
in operation.
WARNING!
Risk of electric shock when pulling out the DC connectors under load
If you disconnect the DC connectors from the inverter under load, an electric arc may
occur, leading to electric shock and burns.
• If the inverter is not equipped with an Electronic Solar Switch and the regulations
valid at the installation site require an external DC switch-disconnector, install an
external DC switch-disconnector.
• Switch off the DC connector, the AC miniature circuit-breaker and disconnect the
inverter on the DC side before pulling out the DC connectors.
CAUTION!
Risk of burns due to hot enclosure parts
• Do not touch the inverter's enclosure during operation.
NOTICE!
Dust and water intrusion can damage the inverter.
If the inverter is equipped with an Electronic Solar Switch, it will only provide IP21 degree
of protection once the Electronic Solar Switch has been pulled out. The inverter is therefore
no longer protected against water and dust intrusion. In order to maintain the degree of
protection IP65 also during temporary decommissioning, proceed as follows:
• Unlock and disconnect all DC connectors.
• Open all DC connectors and remove the cables.
• Close all DC inputs with the corresponding DC connectors and the supplied sealing
plugs.
• Firmly connect the Electronic Solar Switch again.
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SMA Solar Technology AG Safety
NOTICE!
Damage to the inverter due to moisture and dust intrusion
If the Electronic Solar Switch is not plugged in or incorrectly plugged in during operation,
moisture and dust can penetrate the inverter.
If the Electronic Solar Switch is not correctly plugged in, this can cause contacts to wear in
the Electronic Solar Switch or the Electronic Solar Switch might fall down. This can result in
yield loss and damage to the Electronic Solar Switch.
Always plug in the Electronic Solar Switch as described in the following:
• Do not tighten the screw in the Electronic Solar Switch.
• Firmly plug in the Electronic Solar Switch until it is flush with the enclosure.
• Ensure that the maximum distance between the Electronic Solar Switch and the
enclosure is 1 mm.
PV array grounding
Comply with local regulations for the grounding the PV modules and of the PV array.
SMA Solar Technology AG recommends connecting the PV array frame and other
electrically conductive surfaces so that there is continuous conduction and to ground them
in order to ensure maximum protection for plants and persons.
Installation Manual SB33-38-11-IA-en-62 11
Safety SMA Solar Technology AG
DC
21
2.3 Explanation of Symbols
This section gives an explanation of all the symbols found on the inverter and on the type label.
2.3.1 Symbols on the Inverter
Symbol Explanation
Operation display.
Indicates the operating state of the inverter.
Ground fault or varistor defective.
Read section 9.3"Red LED is Glowing Continuously" (page56).
Fault or disturbance.
Read section 9"Troubleshooting" (page50).
You can operate the display by tapping the enclosure lid:
• Tapping once: the backlight switches on or the display scrolls to the
next display message.
• Tapping twice in quick succession*: The inverter shows the display
messages from the startup phase again (see section 6.2"Display
Messages During the Startup Phase" (page40)).
DC switch-disconnector Electronic Solar Switch (ESS)**
• When the Electronic Solar Switch is plugged in,
the DC electric circuit is closed.
• In order to interrupt the DC electric circuit and disconnect the
inverter safely under load, first pull out the Electronic Solar Swit ch
and then remove all DC connectors as described in section
7.2"Opening the Inverter" (page41).
QR-Code
You will find information on the SMA bonus program at
www.SMA-Bonus.com.
®
*** for SMA bonus program
* This function is valid from firmware version 4.00
** optional
*** QR-Code is a registered trademark of DENSO WAVE INCORPORATED.
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SMA Solar Technology AG Safety
2.3.2 Symbols on the Type Label
Symbol Explanation
Beware of hazardous voltage.
The inverter operates at high voltages. All work on the inverter may only be
carried out by an electrically qualified person.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact during
operation.
Observe all documentation that accompanies the inverter.
The inverter must not be disposed of together with the household waste.
For more information on disposal, see section 10.4"Disposing of the
Inverter" (page63).
CE marking.
The inverter complies with the requirements of the applicable
EC guidelines.
The inverter has a transformer.
Direct current (DC)
Alternating current (AC)
Degree of protection IP65
The inverter is protected against dust intrusion and water jets from any
angle.
RAL quality mark for solar products.
The inverter complies with the requirements of the German Institute for
Quality Assurance and Certification.
Installation Manual SB33-38-11-IA-en-62 13
Unpacking SMA Solar Technology AG
3 Unpacking
3.1 Scope of Delivery
Check the delivery for completeness and for visible external damage, such as cracks in the enclosure
or in the display. Contact your specialty retailer if anything is damaged or missing.
Object Quantity Description
A 1 Sunny Boy
B 1 Wall mounting bracket
C 2 Ventilation grids (right/left)
D 1 DC load disconnection unit Electronic Solar Switch (ESS)*
E 5Filler plugs
F 2 Cheese-head screws and M6 conical spring washers
G 1Jumper
H 1 AC coupling socket: socket unit, protective cap for socket unit, threaded
sleeve, sealing ring, pressure screw
I 6 Sealing plugs
K 6 (4) DC connectors (3 ⨯ positive, 3 ⨯ negative)**
L 1 Installation manual
M 1User manual
N 1Document set
O 1 Supplementary sheet with default settings
* optional
** For inverters without ESS: 2 ⨯ positive, 2 ⨯ negative
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SMA Solar Technology AG Unpacking
3.2 Identifying the Inverter
You can identify the inverter using the type label. The type label is on the right-hand side of the
enclosure.
The serial number (Serial No.) and the type (Type / Model) of the inverter, as well as device-specific
characteristics, are specified on the type label.
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Mounting SMA Solar Technology AG
4 Mounting
4.1 Safety
DANGER!
Danger to life due to fire or explosion.
Despite careful construction, electrical devices can cause fires.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in a potentially explosive atmosphere.
CAUTION!
Risk of burns due to hot enclosure parts
• Mount the inverter in such a way that it cannot be touched inadvertently during
operation.
CAUTION!
Risk of injury due to the heavy weight of the inverter.
• Take the inverter's weight of approx. 38 kg into account for mounting.
4.2 Selecting the Mounting Location
Consider the following requirements when selecting the mounting location:
• The mounting method and location must be suitable for the inverter's weight and dimensions
(see section 11"Technical Data" (page64)).
• Mount on a solid surface.
• The mounting location must at all times be clear and safely accessible without the use of
additional aids such as scaffolding or lifting platforms. Non-fulfillment of these criteria may
restrict servicing.
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SMA Solar Technology AG Mounting
• Mount vertically or tilted backwards at a maximum angle of 45°.
• The connection area must point downward.
• Never mount the device with a forward tilt.
• Never mount the device with a sideways tilt.
• Do not mount horizontally.
• Install at eye level in order to allow operation states to be read at all times.
• The inverter must be easy to remove from the mounting location at any time.
• The ambient temperature should be below 40°C to ensure optimum operation.
• Do not expose the inverter to direct solar irradiation as this can cause excessive heating and
thus power reduction.
• I n li vin g areas , do not mou nt t he u nit on p las ter boa rd walls or similar to avoid audible vibrations.
The inverter can make noises when in use which may be perceived as a nuisance in a living
area.
• Observe the minimum clearances to walls, other
inverters, or objects as shown in the diagram in
order to ensure sufficient heat dissipation and,
if applicable, sufficient space for removing the
Electronic Solar Switch if included.
Multiple inverters installed in areas with high ambient temperatures
If necessary, increase the clearances between the individual inverters. In addition, make
sure there is enough fresh-air supply to ensure sufficient cooling of the inverters.
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Mounting SMA Solar Technology AG
4.3 Mounting the Inverter with the Wall Mounting Bracket
CAUTION!
Risk of injury due to the heavy weight of the inverter.
• Note that the inverter weighs approx. 38 kg.
1. Use the wall mounting bracket as a drilling template and mark the positions of the drill holes.
Mounting material
When mounting the wall mounting bracket, use fastening material suitable for the mounting
surface.
2. Fill in holes that are not required in the wall mounting bracket using the filler plugs.
Plug the filler plugs into the wall mounting bracket from the side that will later be facing the wall.
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SMA Solar Technology AG Mounting
3. Attach the wall mounting bracket to the wall using
appropriate screws and washers.
4. Hang the inverter in the wall mounting bracket. In
doing so, lead the anchorage brackets through the
cut-outs on in the inverter.
☑ Both brackets of the wall mounting bracket
extrude out of the cut-outs on the inverter.
5. If a second protective conductor is required, ground the inverter and secure against being
pulled out (5.3.3"Connecting Additional Grounding" (page28)).
6. If a second protective conductor is not required,
secure the inverter against being pulled out:
– Plug the cheese-head screw with conical spring
washer through the metal shackle on the
underside of the enclosure. The teeth of the
conical spring washer must be facing the metal
shackle.
– Tighten the cheese-head screw to a torque of
6 Nm.
7. Check to ensure that the inverter is securely in place. The wall mounting bracket is designed in
such way that the inverter tilts backward slightly on a perfectly vertical wall.
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Mounting SMA Solar Technology AG
8. Attach the ventilation grids. These are labelled with
"links/left" or "rechts/right".
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SMA Solar Technology AG Electrical Connection
5 Electrical Connection
5.1 Safety
NOTICE!
Electrostatic discharges can damage the inverter.
Internal component parts of the inverter can be irreparably damaged by static electric
discharge.
• Before you touch a component inside the inverter, ground yourself by touching a
grounded object.
5.2 Overview of the Connection Area
5.2.1 Exterior View
The following figure shows the assignment of the individual connection areas on the bottom of the
inverter.
Object Description
A Enclosure openings for communication (with filler-plugs)
B DC connectors for connecting the PV strings*
C Jack for connecting the DC switch-disconnector Electronic Solar Switch (ESS)**
D AC socket for grid connection
*If you have ordered the inverter without ESS, the inverter is fitted with 2 negative and 2 positive DC connectors.
** optional
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Electrical Connection SMA Solar Technology AG
5.2.2 Interior View
The following figure shows the various components and connection areas of the open inverter.
Object Description
A Slot for communication
B Display
C Jumper slot for fan test
D Operating status LEDs
E Flat male tab for grounding the cable shield with cable-bound communication
F AC socket for grid connection
G DC connectors for connecting the PV strings*
H Jack for the Electronic Solar Switch (ESS)**
I Enclosure opening with filler-plug for communication.
K Varistors
L Communication connection
M Jumper slot for communication
*If you have ordered the inverter without ESS, the inverter is fitted with 2 negative and 2 positive DC connectors.
** optional
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5.3 Connection to the Power Distribution Grid (AC)
5.3.1 Conditions for the AC Connection
Connection requirements of the grid operator
Always observe the connection requirements of your grid operator.
Cable Design
Use "Sunny Design" version 2.0 or higher for the dimensioning of the conductor cross-sectional areas
(see "Sunny Design" design program at www.SMA.de/en).
Cable Requirements
Position Designation Value
A External diameter 6 mm ... 14 mm
B Conductor cross-section 4 mm²
C Length of insulation to be stripped off 8 mm
Installation Manual SB33-38-11-IA-en-62 23
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