SMA SB 3300 Installation
EN
PV Inverter
SUNNY BOY 3300/3800
Installation Guide
SB33_38-IEN111851 | IME-SB3800 | Version 5.1
SMA Solar Technology AG Table of Contents
Table of Contents
1 Notes on this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.2 Symbols on the Type Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Mounting the Inverter with the Wall Mounting Bracket . . . . . . 17
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 20
5.2.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.2 Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Installation Guide SB33_38-IEN111851 3
Table of Contents SMA Solar Technology AG
5.3 Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 22
5.3.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3.2 Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 24
5.3.3 Connecting Additional Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.4 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.5 Connection of the PV Generator (DC) . . . . . . . . . . . . . . . . . . . 29
5.5.1 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5.2 Assembling the DC Plug Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5.3 Opening the DC Plug Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.5.4 Connecting the PV Generator (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.7 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 36
5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.7.2 Setting Off-Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2 Self-Test in accordance with DK 5940, Ed. 2.2
(applies to Italy only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.1 Starting the Self-Test by Tapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.2 Completion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 47
8.1 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.1.1 Cleaning the Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.1.2 Checking the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.1.3 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Table of Contents
8.2 Checking the Electronic Solar Switch for Wear . . . . . . . . . . . . 51
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9.1 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9.2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.3 Red LED is Glowing Continuously. . . . . . . . . . . . . . . . . . . . . . . 58
9.3.1 Checking the PV Generator for a Ground Fault . . . . . . . . . . . . . . . . . . . . . . 58
9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.1 Dismantling the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.2 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.3 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.4 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
11.1 Sunny Boy 3300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
11.2 Sunny Boy 3800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Installation Guide SB33_38-IEN111851 5
Notes on this Guide SMA Solar Technology AG
1 Notes on this Guide
1.1 Validity
Th is g uid e de scr ibe s the ass emb ly, ins tal lat ion , co mmi ssi oni ng a nd m aintena nce of t he f oll owi ng S MA
inverters:
• Sunny Boy 3300 (SB 3300) from firmware version GRX33_3.02/3.02,
• Sunny Boy 3800 (SB 3800) from firmware version GRX38_3.05/3.05.
The firmware version will be indicated in the display once you have commissioned the inverter.
Keep this guide in a convenient place for future reference.
1.2 Target Group
This guide is for electrically qualified persons. The tasks described in this guide may be performed by
electrically qualified persons only.
1.3 Additional Information
You will find further information on special topics such as designing a line 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.
6 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Notes on this Guide
1.4 Symbols Used
The following types of safety instructions and general information appear in this document as
described below:
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 that can result in property damage, if not avoided.
Information
Information provides tips that are valuable for the optimal installation and operation of
your product.
☑ This symbol indicates the result of an action.
Installation Guide SB33_38-IEN111851 7
Safety SMA Solar Technology AG
2 Safety
2.1 Appropriate Usage
The Sunny Boy is a PV inverter, which converts the DC current of the PV generator to AC current and
feeds it into the public grid.
Principle of a PV plant with this Sunny Boy
The Sunny Boy may only be operated with PV generators (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 device. You must also ensur e that all m easures recomm ended 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 components not expressly recommended or sold
by SMA Solar Technology AG void the warranty claims and operation permission.
8 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Safety
Certified Countries
Providing correct settings, Sunny Boy 3300/3800 complies with the following standards and
guidelines (status: 11/2010):
• VDE 0126-1-1 (02.2006)
• RD 1663/2000 (2000)
• G83/1 (09.2003)
• CER/06/190 (10.2006)
• E 2750 (11.2004)
• PPC (2006/06)
• EN 50438 (12.2007)
• C10/C11 (08.2003)
• PPDS (2009)
• DK 5940 Ed.2.2 (02.2006) (valid for SB 3300-IT/3800-IT only)
• AS4777 (2005)
• IEC-utility Meeting 216
• UTE C15-712-1
SMA Solar Technology AG can preset special grid parameters for other countries/installation
locations according to customer requests, after evaluation by SMA Solar Technology AG. You can
later make modifications yourself by changing software parameters with respective communication
products (e.g. Sunny Data Control or Sunny Explorer) (see section 5.7”Setting the Grid and Country
Parameters” (page36)). To change grid-relevant parameters, you need a personal access code - the
so-called SMA Grid Guard Code. The application form for the personal access code is located in the
download area at www.SMA.de/en, in the "Certificate" category for each inverter.
Installation Guide SB33_38-IEN111851 9
Safety SMA Solar Technology AG
2.2 Safety Instructions
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.
CAUTION!
Danger of burn injuries due to hot enclosure parts!
• Do not touch the inverter's enclosure during operation.
NOTICE!
Dust and water in the inverter can damage the device.
Once the Electronic Solar Switch has been pulled out, the inverter only provides protection
ra tin g IP 21. The inv ert er is the n no lon ger pro tec ted aga ins t wa ter and dus t. I n or der to a lso
maintain protection rating IP65 during temporary decommissioning, proceed as follows:
• Release 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.
• Securely attach the Electronic Solar Switch again.
Grounding the PV generator
Comply with the local requirements for grounding the modules and the PV generator.
SMA Solar Technology AG recommends connecting the generator frame and other
electricity conducting surfaces in a manner which ensures continuous conductions, and
grounding them in order to achieve maximum protection of the system and personnel.
10 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Safety
2.3 Explanation of Symbols
This section gives an explanation of all the symbols found on the inverter and on the type plate.
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” (page58).
Error or disturbance.
Read section 9”Troubleshooting” (page52).
Tap to switch on the display light and switch to the next display message.
Electronic Solar Switch (ESS) DC load disconnection unit
• When the Electronic Solar Switch is plugged in, the DC circuit is
closed.
• In order to interrupt the DC circuit and disconnect the inverter
securely under load, first pull out the Electronic Solar Switch and
then remove all DC plug connectors , as described in section
7.2”Opening the Inverter” (page43).
Installation Guide SB33_38-IEN111851 11
Safety SMA Solar Technology AG
2.3.2 Symbols on the Type Plate
Symbol Explanation
Beware of dangerous electrical 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 household waste. For
more information on disposal, see section 10.4”Disposing of the Inverter”
(page65).
CE mark.
The inverter complies with the requirements of the applicable EC
guidelines.
The inverter has a transformer.
Direct Current (DC)
Alternating current (AC)
Protection rating IP65.
The inverter is protected against penetration by dust particles 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 Labeling.
12 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Unpacking
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 dealer if anything is damaged or missing.
Object Number Description
A 1 Sunny Boy
B 1 Wall mounting bracket (back panel)
C 2 Ventilation grid (1 x right, 1 x left)
D 1 Electronic Solar Switch (ESS)
E 5 Filler-plug for wall mounting (sealing)
F 2 Cylinder bolts and M6 safety washers
G 1 Jumper for communication/fan test
H 1 AC coupling socket: socket unit, protective cap for socket unit, threaded
sleeve, sealing ring, clamping nut.
I 6 Sealing plugs for DC plug connectors
K 6 DC plug connectors (3 x positive / 3 x negative)
L 1 Installation Guide
M 1User Manual
N 1Document set
O 1 Supplementary sheet with inverter factory settings
Installation Guide SB33_38-IEN111851 13
Unpacking SMA Solar Technology AG
3.2 Identifying the Inverter
You can identify the inverter using the type plate. The type plate is on the right 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 plate.
14 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Assembly
4 Assembly
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 areas with a risk of explosion.
CAUTION!
Danger of burn injuries 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 where to install:
• The mounting method and location must be suitable for the inverter's weight and dimensions
(see section 11”Technical data” (page66)).
• Mount on a solid surface.
• The mounting location must at all times be clear and have safe access without the use of
additional aids such as scaffolding or lifting platforms. Any possible service actions are
otherwise limited.
Installation Guide SB33_38-IEN111851 15
Assembly SMA Solar Technology AG
• Install vertically or tilted backwards at a maximum angle of 45°.
• The connection area must point downwards.
• Never mount the device with a forward tilt.
• Never install the device with a sideways tilt.
• Do not mount horizontally.
• Install at eye level in order to allow operation conditions 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 optimal operation.
• Do not expose the inverter to direct sunlight to avoid power reduction due to excessive heating.
• In living areas, do not mount the unit on plasterboard 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
sufficient space for removing the Electronic Solar
Switch.
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 ventilation to ensure sufficient cooling of the inverters
16 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Assembly
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 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. Insert the
filler-plugs into the wall mounting bracket from the outside (the side that will later be placed
against the wall).
Installation Guide SB33_38-IEN111851 17
Assembly SMA Solar Technology AG
3. Attach the wall mounting bracket to the wall using
appropriate screws and washers.
4. Mount the inverter with the upper fastening plates
on the wall mounting bracket in such a way that
both plates on the upper edge of the bracket pass
through the cutouts on the inverter.
5. Visual inspection: The inverter is only correctly
mounted when both rear panel mounting plates
slightly protrude through the cutouts.
6. If a se con d pr otectiv e co ndu cto r is req uir ed i n th e co unt ry o f installation, ground the inverter and
protect against excavation, as described in section 5.3.3”Connecting Additional Grounding”
(page27).
18 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Assembly
7. If a second protective conductor is not required,
secure the inverter against excavation:
– Insert cylinder bolt with safety washer through
the metal lashing eye on the bottom of the
enclosure. The toothing of the safety washer
must face toward the metal shackle.
– Tighten cylinder bolt to a tightening torque of
6Nm.
8. Check to ensure that the inverter is firmly fastened. The wall mounting bracket is designed so
that the inverter tilts backward slightly on a perfectly vertical wall.
9. Attach the ventilation grids provided to the inverter.
To help you identify the sides, "links/left" or "rechts/
right" is printed on the inside of the ventilation grids.
☑ The inverter is now mounted.
Installation Guide SB33_38-IEN111851 19
Electrical Connection SMA Solar Technology AG
5 Electrical Connection
5.1 Safety
NOTICE!
Damage to the inverter through electrostatic discharges.
Internal components of the inverter can be irreparably damaged by static 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 Socket for connecting the Electronic Solar Switch (ESS) DC load disconnection unit
D AC socket for grid connection
20 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Electrical Connection
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 Tab for grounding the cable shield with line-conducted communication
F AC socket for grid connection
G DC connectors for connecting the PV strings
H Electronic Solar Switch (ESS) socket
I Enclosure opening with filler-plugs for communication
K Varistors
L Communication Connection
M Jumper slot for communication
Installation Guide SB33_38-IEN111851 21
Electrical Connection SMA Solar Technology AG
5.3 Connection to the Power Distribution Grid (AC)
5.3.1 Conditions for the AC Connection
Connection requirements of the electric power company
Always observe the connection requirements of your electric power company.
Cable sizing
For optimum operation of the inverter, the grid impedance of the AC cable must not exceed 1 ohm.
This is necessary, amongst other things, for the correct operation of the inverter.
The conductor cross-section should be dimensioned in a way that cable losses do not exceed 1 % at
nominal power. Use "Sunny Design" (www.SMA.de/en/SunnyDesign) for this.
The maximum cable lengths are shown in the following table. Do not exceed the maximum cable
length.
Conductor cross-section Maximum cable length
SB 3300 SB 3800
4 mm² 18.5 m 16 m
The conductor cross-sectional area required in individual cases depends on the following factors:
• Ambient temperature,
•Routing method,
• Cable losses,
• valid installation guidelines of the respective country (of the installation location).
Cable Requirements
Position Description Value
A External diameter 6 mm ... 14 mm
B Conductor cross-section 4 mm²
C Strip insulation 8 mm
22 SB33_38-IEN111851 Installation Guide
SMA Solar Technology AG Electrical Connection
Load disconnection unit
You must install a separate line circuit breaker for each inverter in order to ensure that the inverter
can be securely disconnected under load. The maximum permissible rating can be found in
section11”Technical data” (page66).
De tai led inf orm ation an d ex amp les for the rati ng o f a l ine cir cuit breaker can be found in the Technical
Information "Line Circuit Breaker" in the SMA Solar Technology AG download area at
www.SMA.de/en.
DANGER!
Danger to life due to fire.
When more than one inverter is connected to the same line circuit breaker, the protective
function of the line circuit breaker is no longer guaranteed. It can result in a cable fire or
destruction of the inverter.
• Never connect several inverters to a single line circuit breaker.
• Observe the maximum permissible fuse protection of the inverter when selecting the
line circuit breaker.
DANGER!
Danger to life due to fire.
When a generator (inverter) and a consumer are connected to the same line circuit
breaker, the protective function of the line circuit breaker is no longer guaranteed. The
current from the inverter and the grid can accumulate to overcurrent which is not detected
by the line circuit breaker.
• Never connect consumers between the
inverter and the line circuit breaker
without protection.
• Always protect consumers separately.
NOTICE!
Damage to the inverter by using screw type fuse elements as a load
disconnection unit.
A screw type fuse element, e.g. D system (Diazed) or D0 system (Neozed) is not a load
disconnection unit, and thus must not be used as a load disconnection unit. A bolt securing
element serves as line fuse only.
When disconnecting under load using a screw type fuse element, the inverter can be
damaged.
• Use only a load disconnection switch or a line circuit breaker as a lo ad d isc onn ect ion
unit.
Installation Guide SB33_38-IEN111851 23
Loading...