SMA SB 2500TL-21 Installation
EN
PV Inverter
SUNNY BOY 2500TLSingleTracker
SUNNYBOY3000TLSingleTracker
Installation Manual
SB25-30TLST-21-IA-en-13 | Version 1.3
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . 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 Qualification of Skilled Persons . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Scope of Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5 Electronic Solar Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Bluetooth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.7 Slot for Communication Interface . . . . . . . . . . . . . . . . . . . . . . . 20
4.8 Slot for Multi-Function Interface . . . . . . . . . . . . . . . . . . . . . . . . 21
4.9 Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.10 Grid Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.11 Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 23
5.3 Mounting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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Table of Contents SMA Solar Technology AG
6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 28
6.3 Connection to the Electricity Mains (AC) . . . . . . . . . . . . . . . . . 29
6.3.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.3.2 Connecting the Inverter to the Electricity Mains (AC) . . . . . . . . . . . . . . . . . . 32
6.3.3 Additional Earthing of the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4.1 Conditions for DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4.2 Assembling the DC Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.4.3 Disassembling the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.4.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.5 Setting the Country Standard and Display Language . . . . . . . 43
6.5.1 Checking the Country Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.5.2 Setting the Country Standard and Language using the
Rotary Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.6.1 Interface for RS485 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.6.2 Setting the Bluetooth NetID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.6.3 Multi-Function Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.2 Display Messages during the Start-Up Phase . . . . . . . . . . . . . . 53
7.3 Self-Test in Accordance with CEI 0-21 for Plants ≤ 6 kW. . . . 54
7.3.1 Starting the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.3.2 Abortion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.3.3 Restarting the Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.4 Deactivating Protective Conductor Monitoring. . . . . . . . . . . . . 55
4 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Table of Contents
8 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.2 Disconnecting the Inverter from Voltage Sources . . . . . . . . . . . 57
8.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 62
9.1 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.2 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.3 Checking the Electronic Solar Switch for Wear . . . . . . . . . . . . 62
10 Slot for SD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.1 LED Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.2 Event Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.3 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
11.4 DC Current after AC-Side Disconnection . . . . . . . . . . . . . . . . . 76
11.5 Checking the PV Array for Earth Faults . . . . . . . . . . . . . . . . . . . 76
11.6 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . 78
12 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.1 Dismantling the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.2 Replacing the Enclosure Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.3 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
12.4 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
12.5 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
13.1 DC/AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
13.1.1 Sunny Boy 2500TL Single Tracker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
13.1.2 Sunny Boy 3000TL Single Tracker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
13.2 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Installation Manual SB25-30TLST-21-IA-en-13 5
Table of Contents SMA Solar Technology AG
13.3 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
13.4 Climatic Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
13.5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13.6 Electronic Solar Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13.7 Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13.8 Grid Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13.9 Data Storage Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
14 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
15 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
6 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Information on this Document
1 Information on this Document
1.1 Validity
This document is valid for the following device types:
• SB 2500TLST-21
• SB 3000TLST-21
1.2 Target Group
This document is for skilled persons. Only skilled persons with appropriate qualification are allowed
to perform the tasks set forth in this document (see Section 2.2 "Qualification of Skilled Persons"
(page10)).
1.3 Additional Information
Additional information is available at www.SMA.de/en.
Title Document type
Miniature Circuit-Breaker Technical information
Parameters and Measured Values Technical description
SMA Bluetooth ‒ SMA Bluetooth
SMA Bluetooth
Module Technology Technical information
Capacitive Leakage Currents Technical information
®
Wireless Technology Technical description
®
Wireless Technology in Practice Technical information
Installation Manual SB25-30TLST-21-IA-en-13 7
Information on this Document 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 safety precaution 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, could result in property damage.
Information
Information provides tips that are valuable for effective installation and operation of the
product.
☑ This symbol indicates the result of an action.
Nomenclature
The following nomenclature is used in this document:
Complete designation Designation in this document
Sunny Boy 2500TL Single Tracker/
Sunny Boy 3000TL Single Tracker
Electronic Solar Switch ESS
®
SMA Bluetooth
8 SB25-30TLST-21-IA-en-13 Installation Manual
Wireless Technology Bluetooth
Inverter, product
SMA Solar Technology AG Safety
2 Safety
2.1 Intended Use
The Sunny Boy is a PV inverter, which converts the direct current of the PV array to grid-compliant
alternating current and feeds it into the electricity grid.
Principle of a PV plant with this Sunny Boy
The Sunny Boy is suitable for indoor and outdoor use.
The Sunny Boy must only be operated with PV arrays of protection class II, in accordance with
IEC 61730, application class A. The PV modules must be suitable for use with the Sunny Boy and
must have been released by the module manufacturer.
It is only permissible to use PV modules with large capacities to earth if their coupling capacity does
not exceed 1.4 μF.
All components must remain within their operating ranges at all times.
For safety reasons, it is not permitted to modify the product or install components that are not explicitly
recommended or distributed by SMA Solar Technology AG for this product.
Only use the Sunny Boy in accordance with the information provided in the enclosed documentation.
Any other use may result in personal injury or property damage.
• 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.
Installation Manual SB25-30TLST-21-IA-en-13 9
Safety SMA Solar Technology AG
The enclosed documentation is an integral part of this product.
• Read and observe the documentation.
• Keep the documentation in a convenient place for future reference.
2.2 Qualification of Skilled Persons
The work described in this document must be performed by skilled persons only. Skilled persons must
have the following qualifications:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing and using electrical
devices and plants
• Training in the installation and commissioning of electrical devices and plants
• Knowledge of all applicable standards and directives
• Knowledge of and adherence to this document and all safety precautions
2.3 Safety Precautions
DANGER!
Danger to life due to electric shock
When exposed to sunlight, the PV array generates a dangerous DC voltage which is
present in the DC conductors or the live components in the inverter.
• Do not touch the DC conductors.
• Do not touch live components in the inverter.
• Prior to performing any work on the inverter, always disconnect it from any voltage
sources as described in this document (see Section 8.2 "Disconnecting the Inverter
from Voltage Sources" (page57)).
DANGER!
Risk of burns due to electric arc
To prevent arcing when disconnecting cables in the PV array, the ESS and DC connectors
must be removed from the inverter, or the external DC switch-disconnector must be
switched off and the DC connectors must be removed from the inverter before performing
any work on the PV array.
• Before starting work on the PV array, always disconnect the inverter on the AC and
DC sides (see Section 8.2 "Disconnecting the Inverter from Voltage Sources"
(page57)).
• Attach the enclosed warning label "Risk of burns from electric arc" so that it is clearly
visible on the external AC disconnection device.
10 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Safety
WARNING!
Risk of electric shock if DC connectors are pulled out under load
If you disconnect the DC connectors from the inverter under load, an electric arc may
occur, causing electric shock and burns.
• If the inverter is not equipped with an Electronic Solar Switch and the regulations in
the country of installation require an external DC switch-disconnec tor , yo u mu st i nstall
an external DC switch-disconnector.
• Switch off the AC miniature circuit-breaker and disconnect the inve rte r on the DC side
before pulling out the DC connectors.
CAUTION!
Risk of burns due to hot enclosure parts
Some parts of the enclosure may become hot during operation.
• Do not touch any parts other than the lower enclosure lid of the inverter during
operation.
NOTICE!
Water and dust intrusion can damage the inverter.
If the inv erter is n ot e qui ppe d wi th an E SS, the ele ctr oni cs in the i nve rte r co mpl y wi th deg ree
of protection IP65 when closed. If the inverter is equipped with an ESS, the electronics in
the inverter comply with degree of protection IP65 when the inverter is closed and with the
ESS plugged in. The inverter is then protected against dust and water intrusion. The inverter
connection area complies with degree of protection IP54. It is protected against interior
dust deposits and splash water from all angles.
• When the ESS is not plugged in, measures must be taken to protect the inverter
against dust and water.
• Replug the ESS after carrying out any work on the inverter.
Earthing of the PV array
Comply with local regulations for the earthing of the modules and the PV array.
SMA Solar Technology AG recommends connecting the array frame and other ele ctrical ly
conductive surfaces so that there is continuous conduction, and earthing them in order to
ensure maximum protection for property and persons.
Installation Manual SB25-30TLST-21-IA-en-13 11
Scope of Delivery SMA Solar Technology AG
A
B
C
E
H
FG
I
K
_
+
D
3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact your
specialist dealer if the delivery is incomplete or you find any damage.
Object Quantity Description
A 1 Sunny Boy*
B 1 Wall mounting bracket
C 2 Positive DC connector
D 2 Negative DC connector
E 4 Sealing plugs for the DC connectors
F 1 Installation manual
G 1User manual
H 1 Set of documents with explanations and certificates
I 1 Supplementary sheet with inverter default settings
K 1 Warning label "Risk of burns from electric arc" for the disconnection device
on the AC side.
*Optional without ESS
12 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Product Description
4 Product Description
4.1 Sunny Boy
The Sunny Boy is a PV inverter, which converts the direct current of the PV array to grid-compliant
alternating current and feeds it into the electricity grid.
Item Description
A Type label
B LEDs
C Display
D Electronic Solar Switch*
E Lower enclosure lid
F Upper enclosure lid
*optional
Installation Manual SB25-30TLST-21-IA-en-13 13
Product Description SMA Solar Technology AG
4.2 Symbols on the Inverter
Symbol Description Explanation
Inverter This symbol defines the function of the green LED.
It indicates the operating state of the inverter.
Observe the
documentation.
This symbol defines the function of the red LED.
It in dicat es a faul t or di sturban ce. Please rea d the
manual to find information on how to remedy the
fault or disturbance.
Bluetooth This symbol defines the function of the blue LED.
It indicates that communication via Bluetooth is
activated.
QR Code
®
Links to additional information on the inverter can
be found at www.SMA-Solar.com.
NOTICE, danger! Observe the connection requirements for a
second protective conductor 6.3.1 "Conditions
for the AC Connection" (page29).
Danger to life due to
high voltages in the
inverter
The capacitors in the inverter may be charged
with very high voltages.
• Disconnect the inverter from voltage
sources (see Section 8.2) and wait
five minutes before opening the upper lid,
in order to allow time for the capacitors to
discharge.
14 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Product Description
IP54
4.3 Type Label
The type label uniquely identifies the inverter. The type label is located on the right-hand side of the
enclosure. You will find the following information on the type label:
• Device type (Model)
•Serial number (Serial No.)
• Date of manufacture
• Device-specific characteristics
The information on the type label is intended to help you use the inverter safely and receive targeted
customer support from the SMA Service Line. The type label must remain permanently attached to the
inverter.
Symbols on the Type Label
Symbol Description Explanation
Danger to life due to high
voltages
Risk of burns from hot
surfaces
Observe the
documentation.
The inverter operates at high voltages. All work
on the inverter must be carried out by skilled
persons only.
The inverter can get hot during operation. Avoid
contact during operation. Allow the inverter to
cool down sufficiently before carrying out any
work. Wear personal protective equipment such
as safety gloves.
Observe all documentation that is supplied with
the inverter.
Without transformer The inverter does not have a transformer.
DC Direct current
AC Alternating current
Degree of protection: IP54 The inverter is protected against interior dust
deposits and against splash water from all
angles.
Outdoor The inverter is suitable for outdoor installation.
Proper disposal The inverter must not be d isp ose d of tog eth er with
the household waste.
Installation Manual SB25-30TLST-21-IA-en-13 15
Product Description SMA Solar Technology AG
kVAr
kVArh
kWh
MVArh
MWh
kW
kWh
A
B
C
D
E
F
G
H
K
L
M
I
t/hday
Symbol Description Explanation
CE marking The inverter complies with the requirements of the
applicable EC directives.
Device class label The product is equipped with a wireless
component that complies with the harmonised
standards.
RAL quality mark for solar
products
The inverter complies with the requirements of the
German Institute for Quality Assurance and
Labelling.
Certified safety The inverter complies with the requirements of the
European Equipment and Product Safety Act.
Australian mark of
conformity
The inverter complies with the requirements of the
applicable Australian guidelines.
4.4 Display
The display shows the current operating data of the inverter (e.g. status, power, input voltage) as well
as faults and disturbances.
Item Description Explanation
A Power Displays the current power
B Day Displays the amount of energy fed in so far today
C Total Total amount of energy fed in until now
D Active functions The symbols indicate which communication or power
regulation functions are enabled.
16 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Product Description
Item Description Explanation
E Phase assignment Shows assignment of the inverter to a phase. It is also
used to indicate external power limitation.
F Electricity grid event number Event number of a disturbance in the electricity grid
G Output voltage/output
current
The display alternately shows the output voltage and
the output current of the inverter.
H Inverter event number Event number of a device disturbance
I Input voltage/input current The display alternately shows the input voltage and
the input current of the inverter.
K PV array event number Event number of a disturbance in the PV array
L Text line The text line shows event messages or instructions.
M Power and yield curve The diagram shows the changes in power over the
last 16 feed-in hours or the energy yields over the last
16 days. Tap the display once to switch between
views.
Symbols on the Display
Symbol Designation Explanation
Tap symbol You can operate the display by tapping it:
• Tapping once: the backlight switches on or the
display scrolls to the next display message.
• Tapping twice: the display shows, in succession,
the firmware version, the serial number or
description of the inverter, the Bluetooth NetID,
the set country standard and the display
language.
Telephone receiver Device disturbance present. Contact the
SMA Service Line.
Spanner Disturbance which can be resolved on-site.
Bluetooth Bluetooth communication is enabled.
Bluetooth connection Bluetooth connection to other devices is active.
Multi-function relay The multi-function relay is active.
Installation Manual SB25-30TLST-21-IA-en-13 17
Product Description SMA Solar Technology AG
Symbol Designation Explanation
Temperature symbol The power of the inverter is limited due to excessive
temperature.
Power limitation External active power limitation via the
Power Reducer Box is active.
PV array ‒
Inverter ‒
Gr id rel ay If the grid r ela y is clo sed , the i nve rte r fe eds pow er into
the grid. If the grid relay is open, the inverter is
disconnected from the grid.
Electricity grid ‒
18 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Product Description
B
A
C
4.5 Electronic Solar Switch
The ESS is an optional DC load disconnect unit. The ESS prevents electric arcs from forming when you
remove the DC connector.
Item Description Explanation
A Plug ‒
B Safety precautions
sticker
C ESS sticker • When the ESS is plugged in, the DC electric circuit
• Never operate the inverter without the lower enclosure
lid in place.
• Observe all documentation that accompanies the
inverter.
remains closed.
• To interrupt the DC electric circuit, you first need to
perform steps 1 and 2.
• Remove the ESS.
• Remove all DC connectors.
When plugged in, the ESS forms a conductive path between the PV array and the inverter. Removing
the ESS interrupts the electric circuit and allows you to safely disconnect the DC connectors from the
inverter.
Installation Manual SB25-30TLST-21-IA-en-13 19
Product Description SMA Solar Technology AG
4.6 Bluetooth
The inverter is equipped with a Bluetooth interface as standard and can consequently communicate
with other Bluetooth devices (for information on supported SMA products, see www.SMA-Solar.com).
If you wish to communicate via Bluetooth, you can protect the inverter with one plant password for
the user and one plant password for the installer.
All inverters are delivered with a default plant password for the user (0000) and a default plant
password for the installer (1111). To protect the plant from unauthorised access, you must change
the plant passwords using a communication product (for information on changing the plant password,
refer to the manual of the communication product).
If you do not wish to communicate via Bluetooth, deactivate the Bluetooth communication
(see Section 6.6.2 "Setting the Bluetooth NetID" (page50)).
4.7 Slot for Communication Interface
The inverter can optionally be fitted with an extra communication interface (e.g., RS485 or Speedwire/
Webconnect). This communication interface will enable the inverter to communicate with specific
SMA communication products (for information on supported products, see www.SMA-Solar.com).
The communication interface can either be retrofitted or installed ex works if specified in the
corresponding order.
Depending on the type of communication, RS485, Bluetooth or Speedwire/Webconnect, the
parameters and messages are displayed differently in the communication products.
Example: How the country data set parameter is displayed
• For communication via RS 485: parameter CntrySet
• For communication via Bluetooth or Speedwire/Webconnect: parameter Set country
standard
20 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Product Description
4.8 Slot for Multi-Function Interface
The inverter is equipped with a slot for multi-function interfaces. This slot is designed to connect a
simple multi-function relay, an SMA Power Control Module or a fan retrofit kit. The multi-function
interface can be retrofitted or installed at the factory according to a specific order.
Multi-Function Relay
You can configure the multi-function relay for various operating modes. The multi-function relay is
used, for example, to switch on or off operation or fault indicators which are required by standards
in some countries, e.g. IEC 62109-2 (for information on installation and configuration, see installation
manual of the multi-function relay). In order to meet the requirements of IEC 62109-2, either the
multi-function relay must be used as fault indicator and configured accordingly or a connection to
Sunny Portal must be available and the fault alarm via e-mail must be activated in Sunny Portal
(for information on fault alarm via e-mail, see the Sunny Portal user manula at www.SMA-Solar.com).
SMA Power Control Module
The SMA Power Control Module enables the inverter to implement grid management services and is
equipped with an additional multi-function relay (for information on installation and configuration, see
installation manual of the SMA Power Control Module).
Fan Retrofit Kit
The fan retrofit kit is used for additional inverter cooling at high ambient temperatures and also has a
multi-function relay (for information on installation and configuration, see the fan retrofit kit installation
manual). The fan retrofit kit and the SMA Power Control Module cannot be operated in parallel.
4.9 Operating Parameters
Various operating parameters control the functionality of the inverter. Apart from the country data set,
the operating parameters of the inverter can only be adjusted using an SMA communication product
(information on the parameters can be found in the Technical Description "Measured Values, Operating
Parameters and Event Messages" at www.SMA-Solar.com). You can adjust the country data set before
commissioning or within the first ten feed-in hours via two rotary switches in the inverter (see Section
6.5.2 "Setting the Country Standard and Language using the Rotary Switches" (page49)).
4.10 Grid Management
The inverter is equipped with grid management functions.
Depending on the requirements of the network operator, you can activate and configure these
functions (e.g. provision of reactive power, active power limitation) via operating parameters.
For detailed information on the parameters of these functions, see the Technical Description
"Measured Values, Operating Parameters and Event Messages" at www.SMA.de/en in the
"Technical Description" category of the respective inverter.
Installation Manual SB25-30TLST-21-IA-en-13 21
Product Description SMA Solar Technology AG
4.11 Varistors
Varistors are voltage-dependent resistors to protect the inverter against overvoltage. The inverter is
equipped with two thermally-monitored varistors.
The function of the varistors can diminish with age or repeated strain as a result of overvoltage. This
can cause varistors to wear. The inverter detects if one of the varistors is defective and indicates a
disturbance.
The varistors are specially manufactured for use in the inverter and are not commercially available.
You must order new varistors directly from SMA Solar Technology AG.
22 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Mounting
5 Mounting
5.1 Safety
DANGER!
Danger to life due to fire or explosions
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
• When mounting, bear in mind that the inverter weighs approx. 23 kg.
5.2 Selecting the Mounting Location
Take the following requirements into consideration when selecting the mounting location:
• The mounting location must be inaccessible to children.
• The mounting method and location must be suitable for the weight and dimensions of the
inverter (see Section 13 "Technical Data" (page85)).
• Mount on a solid surface.
• The mounting location must be clear and safely accessible at all times without the use of
additional aids such as scaffolding or lifting platforms. Non-fulfillment of these criteria may
restrict execution of servicing.
Installation Manual SB25-30TLST-21-IA-en-13 23
500 mm
100 mm
100 mm
50 mm
300 mm
Mounting SMA Solar Technology AG
• Mount vertically or tilted backwards by max. 15°.
• The connection area must face downwards.
• Never mount the device with a forward tilt.
• Never mount the device with a sideways tilt.
• Do not mount horizontally.
• Mount at eye level in order that operating states can be read at all times.
• 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.
• In living areas, do not mount the unit on plasterboard walls or similar in order to avoid audible
vibrations. When in use, the inverter emits noises which may be perceived as a nuisance in a
living area.
• Obs erve t he recom mended minimu m cleara nces t o
the walls as well as to other inverters and objects as
shown in the diagram. This will ensure sufficient
heat dissipation and gives you enough space to
unplug the ESS.
• If multiple inverters are mounted in areas with high
ambient temperatures, increase the clearances
between the inverters and ensure an adequate
fresh-air supply. This will prevent a reduction in
inverter power as a result of high temperatures
(details on temperature derating can be found in
the Technical Information "Temperature Derating"
at www.SMA.de/en). A fan for connection to the
inverter is available as an accessory
(see Section 14 "Accessories" (page91)).
24 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Mounting
490 mm
335 mm
175 mm
80 mm
55 mm
33 mm
175 mm
65 mm
45 mm
30 mm
9 mm
9 mm x 18 mm
70 mm
70 mm
31
mm
25
mm
57mm
98 mm
133 mm
5.3 Mounting the Inverter
Additionally required mounting material (not included in the scope of delivery):
– 3 screws (diameter: at least 6 mm)
– 3 wall plugs
– 3 washers (external diameter: at least 18 mm)
1. Use the wall mounting bracket as a drilling template and mark the positions of the drill holes.
Number of drill holes to use
• When mounting onto the wall, use at least two of the horizontal holes and the lower
centre hole.
• Use the two holes in the centre when mounting the device on a pillar.
Installation Manual SB25-30TLST-21-IA-en-13 25
Mounting SMA Solar Technology AG
2. Drill the holes.
3. At tac h the w all mou nti ng bra cke t us ing appro pri ate
screws (diameter min. 6 mm) and washers
(outer diameter min. 18 mm).
4. Transport the inverter using the recessed grips on
the sides.
5. Hook the inverter into the mounting bracket from
above.
6. Check both sides of the inverter to make sure it is correctly in place.
26 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Mounting
Optional Anti-Theft Protection
To protect the inverter from theft, you can lock it to the wall mounting bracket using a padlock.
The padlock must meet the following requirements:
–Size:
A: 6 mm to 8 mm diameter
B: 23 mm to 29 mm
C: 23mm to 28mm
D: 39 mm to 50 mm
E: 13 mm to 18 mm
–stainless
– hardened shackle
– protected lock cylinder
Outdoor installation
Always use a lock suitable for outdoor applications. Check regularly that the padlock is
working properly.
• Thread the padlock shackle from the centre of the
device outwards through the metal clip on the wall
mounting bracket and the slot on the inverter, and
close the padlock.
Storage of the key
Keep the key in a safe place in case it is needed for service purposes.
Installation Manual SB25-30TLST-21-IA-en-13 27
Electrical Connection SMA Solar Technology AG
6 Electrical Connection
6.1 Safety
NOTICE!
Electrostatic discharge can damage the inverter
Internal components of the inverter can be irreparably damaged by electrostatic
discharge.
• Earth yourself before touching any components.
6.2 Overview of the Connection Area
The following figure shows the inverter connection area with the lower enclosure lid open.
Item Description
A DC connectors for connecting the strings
B Socket for connecting the ESS*
C Plug for connecting the optional multi-function relay or additional fan kit
D Plug for optional communication via RS485
E Terminal for the AC cable
F Cable gland (12 mm to 21 mm) for routing the AC cable
G Enclosure opening for connecting the optional multi-function relay or additional fan kit
or optional communication via RS485
28 SB25-30TLST-21-IA-en-13 Installation Manual
SMA Solar Technology AG Electrical Connection
Item Description
H Switch for temporarily changing the display language to English (for service purposes)
I Rotary switch for the configuration of Bluetooth communication
K Enclosure opening for optional communication via RS485
L Rotary switches for setting the country standard and display language
M Enclosure opening for connecting the optional multi-function relay or additional fan kit
N Slot for SD Card
O Earth terminal for additional earthing of the inverter
P Enclosure opening for installing a fan (available as an additional fan kit)
*optional
6.3 Connection to the Electricity Mains (AC)
6.3.1 Conditions for the AC Connection
• Comply with the connection requirements of your network operator.
Residual-Current Device
The inverter is equipped with an integrated all-pole-sensitive residual-current monitoring unit. The
inverter can automatically differentiate between residual currents and normal capacitive leakage
currents. If the network operator stipulates a residual-current protective device, you must use a
residual-current protective device that triggers in the event of a residual current of 100 mA or more.
Further information on the use of a residual-current protective device can be found in the Technical
Information "Criteria for Selecting an RCD" at www.SMA.de/en.
Overvoltage Category
The inverter can be deployed in grids of installation category III or lower, as defined under
IEC 60664-1. This means that it can be permanently connected at the grid-connection point in a
building. In installations involving long cable routes outdoors, additional overvoltage-reducing
measures must be taken so that the overvoltage category is reduced from IV to III (for further
information, see the Technical Information "Overvoltage Protection" at www.SMA-Solar.com).
Cable Dimensioning
Use Sunny Design Version 2.0 or higher for sizing the conductor cross-sections (see Sunny Design
program at www.SMA.de/en).
Installation Manual SB25-30TLST-21-IA-en-13 29
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