SMA STP 12000TL-US User Manual

InstallationManual

SUNNYTRIPOWER 12000TL-US/ 15000TL-US/ 20000TL-US/ 24000TL-US

STP12-24TL-US-IA-en-16 | Version 1.6

ENGLISH

Legal Provisions

SMA Solar Technology AG

Legal Provisions

form or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA America, LLC.

Neither SMA America,LLC nor SMA Solar Technology Canada Inc. makes representations, express or implied, with respect to this documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied warranties of utility, merchantability, or fitness for any particular purpose. All such warranties are expressly disclaimed. Neither SMA America,LLC nor its distributors or dealers nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.

(The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may not apply.)

Specifications are subject to change without notice. Every attempt has been made to make this document complete, accurate and up-to-date. Readers are cautioned, however, that product improvements and field usage experience may cause SMA Solar Technology America LLC and/or SMA Canada Inc. to make changes to these specifications without advance notice, or per contract provisions in those cases where a supply agreement requires advance notice. SMA shall not be responsible for any damages, including indirect, incidental or consequential damages, caused by reliance on the material presented, including, but not limited to, omissions, typographical errors, arithmetical errors or listing errors in the content material.

All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a product or brand is not a registered trademark.

The BLUETOOTH® word mark and logos are registered trademarks of Bluetooth SIG, Inc. and any use of such marks by SMA America,LLC and SMA Solar Technology Canada Inc. is under license.

Modbus® is registered trademark of Schneider Electric and is licensed by Modbus Organization, Inc.

QR Code is a registered trademark of DENSO WAVE INCORPORATED. Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company. Torx® is a registered trademark of Acument Global Technologies, Inc.

SMA America, LLC

3801 N. Havana Street

Denver, CO 80239 U.S.A.

SMA Solar Technology Canada Inc.

2425 Matheson Blvd. E

7th Floor

Mississauga, ON L4W 5K4

Canada

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SMA Solar Technology AG

Important Safety Instructions

SAVE THESE INSTRUCTIONS

This manual contains important instructions for the following products:

• STP 12000TL-US-10 (Sunny Tripower 12000TL-US)

• STP 15000TL-US-10 (Sunny Tripower 15000TL-US)

• STP 20000TL-US-10 (Sunny Tripower 20000TL-US)

• STP 24000TL-US-10 (Sunny Tripower 24000TL-US)

This manual must be followed during installation and maintenance.

The product is designed and tested in accordance with international safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the product. To reduce the risk of personal injury and to ensure the safe installation and operation of the product, you must carefully read and follow all instructions, cautions and warnings in this manual.

Warnings in this Document

A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.

Symbol Description

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal injury.

Warnings on this Product

The following symbols are used as product markings with the following meanings.

Warning regarding dangerous voltage

The product works with high voltages. All work on the product must only be performed as described in the documentation of the product.

Beware of hot surface

The product can become hot during operation. Do not touch the product during operation.

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Important Safety Instructions

Observe the operating instructions

Read the documentation of the product before working on it. Follow all safety precautions and instructions as described in the documentation.

SMA Solar Technology AG

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General Warnings

All electrical installations must be made in accordance with the local and NationalElectrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSAC22.1. This document does not

and is not intended to replace any local, state, provincial, federal or national laws, regulations or codes applicable to the installation and use of the product, including without limitation applicable electrical safety codes. All installations must conform with the laws, regulations, codes and standards applicable in the jurisdiction of installation. SMA assumes no responsibility for the compliance or noncompliance with such laws or codes in connection with the installation of the product.

The product contains no user-serviceable parts. For all repair and maintenance, always return the unit to an authorized SMA Service Center.

Before installing or using the product, read all of the instructions, cautions, and warnings in this manual.

Before connecting the product to the electrical utility grid, contact the local utility company. This connection must be made only by qualified personnel.

Wiring of the product must be made by qualified personnel only.

Installation Manual 5STP12-24TL-US-IA-en-16

Table of Contents

SMA Solar Technology AG

Table of Contents

1 Information on this Document ................................................. 9

1.1 Validity................................................................................................ 9

1.2 Target Group...................................................................................... 9

1.3 Additional Information ....................................................................... 9

1.4 Symbols .............................................................................................. 10

1.5 Nomenclature..................................................................................... 10

2 Safety......................................................................................... 11

2.1 Intended Use ...................................................................................... 11

2.2 Safety Information.............................................................................. 12

3 Scope of Delivery...................................................................... 14

4 Product Description................................................................... 15

4.1 Sunny Tripower .................................................................................. 15

4.2 Interfaces and Functions .................................................................... 17

5 Mounting ................................................................................... 19

5.1 Requirements for Mounting ............................................................... 19

5.2 Mounting the Inverter......................................................................... 22

6 Electrical Connection................................................................. 25

6.1 Safety during Electrical Connection.................................................. 25

6.2 Overview of the Connection Area .................................................... 27

6.2.1 View from Below............................................................................ 27

6.2.2 Interior View ................................................................................... 28

6.3 AC Connection................................................................................... 28

6.3.1 Requirements for the AC Connection............................................ 28

6.3.2 Connecting the Inverter to the Utility Grid.................................... 29

6.3.3 Connecting Additional Grounding ............................................... 31

6.4 DC Connection................................................................................... 32

6.4.1 Requirements for the DC Connection............................................ 32

6.4.2 Connecting the PV Array ............................................................... 33

6.5 Connecting the Inverter to the Network ........................................... 35

7 Commissioning the Inverter ..................................................... 37

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Table of Contents

8 Configuration ............................................................................ 38

8.1 Integrating the Inverter into the Network.......................................... 38

8.2 Changing Operating Parameters...................................................... 38

8.3 Setting the Active Power Limitation in case of PV System Control

Failure ................................................................................................. 39

8.4 Deactivating the Arc-Fault Circuit Interrupter (AFCI)........................ 39

8.5 Setting SMA OptiTrac Global Peak ................................................. 39

8.6 Adjustable Parameters....................................................................... 39

9 Disconnecting the Inverter from Voltage Sources.................. 41

10 Troubleshooting ........................................................................ 43

10.1 Cleaning the Inverter.......................................................................... 43

10.2 Event Messages ................................................................................. 43

10.3 Cleaning the Fans .............................................................................. 54

10.3.1 Cleaning the Fan at the Bottom..................................................... 54

10.3.2 Cleaning the Fan on the Left-Hand Side of the Enclosure ........... 55

10.4 Checking the Function of the Fans .................................................... 57

10.5 Checking the PV System for Ground Faults...................................... 57

10.6 Resetting the Operation Inhibition after Detection of an Arc Fault . 60

11 Recommissioning the Inverter.................................................. 61

12 Decommissioning the Inverter ................................................. 63

13 Procedure for Receiving a Replacement Device .................... 65

14 Technical Data........................................................................... 69

14.1 DC/AC ............................................................................................... 69

14.1.1 Sunny Tripower 12000TL-US / 15000TL-US / 20000TL-US..... 69

14.1.2 Sunny Tripower 24000TL-US........................................................ 71

14.2 General Data ..................................................................................... 72

14.3 Protective Devices .............................................................................. 73

14.4 Climatic Conditions............................................................................ 74

14.5 Equipment........................................................................................... 74

14.6 Torques............................................................................................... 74

14.7 Data Storage Capacity...................................................................... 74

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Table of Contents

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15 Spare Parts and Accessories.................................................... 75

16 Compliance Information........................................................... 76

17 Contact....................................................................................... 77

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1 Information on this Document

1.1 Validity

This document is valid for the following device types:

• STP 12000TL-US-10 (Sunny Tripower 12000TL-US)

• STP 15000TL-US-10 (Sunny Tripower 15000TL-US)

• STP 20000TL-US-10 (Sunny Tripower 20000TL-US)

• STP 24000TL-US-10 (Sunny Tripower 24000TL-US)

1.2 Target Group

The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills:

• 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 installations

• Training in the installation and commissioning of electrical devices and installations

• Knowledge of the applicable standards and directives

• Knowledge of and compliance with this document and all safety information

1.3 Additional Information

Links to additional information can be found at www.SMA-Solar.com:

Document title Document type

"SunnyExplorer" Software for Visualizing and Administrating a SpeedwireSystem

"Webconnect Systems in SunnyPortal" Registration in SunnyPortal and setting or changing operating pa-

rameters of the inverter

"Parameter list" Overview of All Inverter Operating Parameters and Their Configura-

tion Options

"Efficiency and Derating" Efficiency and Derating Behavior of the SunnyBoy, SunnyTripower

and SunnyMiniCentral Inverters

"Leading Leakage Currents" Information on the Design of Transformerless Inverters

User Manual

Technical Information

Installation Manual 9STP12-24TL-US-IA-en-16

1 Information on this Document

Document title Document type

"Shade Management" Efficient operation of partly shaded PV systems with OptiTracGlob-

alPeak

"Module Technology" Use of Thin-Film and Back-Contact Modules

SMA Solar Technology AG

Technical Information

1.4 Symbols

Symbol Explanation

Information that is important for a specific topic or goal, but is not safety-relevant

Indicates a requirement for meeting a specific goal

Desired result

A problem that might occur

1.5 Nomenclature

Complete designation Designation in this document

SMAAmericaProduction,LLC SMA

SMA Solar Technology Canada Inc. SMA

SMA Speedwire Speedwire

PV system PV system

SunnyTripower 12000TL-US/ 15000TL-US/ 20000TLUS/ 24000TL-US

SMAConnectionUnit1000-US Connection Unit

SunnyTripower, inverter

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SMA Solar Technology AG

2 Safety

2.1 Intended Use

The SunnyTripower is a transformerless PV inverter with two MPP trackers which converts the direct current of the PV array to grid-compliant three-phase current and feeds it into the utility grid.

No galvanic isolation

• The product is not equipped with a transformer and therefore has no galvanic isolation. Do not use grounded PV modules with the product. Only ground the mounting frame of the PV modules. If you connect grounded PV modules to the product, the error message Insulation resistance > Check generator occurs.

• The AC output/neutral conductor is not bonded to ground inside of the product.

The product is suitable for indoor and outdoor use. The SunnyTripower must only be operated with PV arrays (PV modules and cabling) that are

approved by the electrical standards applicable on-site and the NationalElectricalCode® ANSI/ NFPA70 or the CanadianElectricalCode® CSAC22.1. The PV modules used must be suitable for use with the SunnyTripower.

SMA offers the SMAConnectionUnit which is equipped with fuse holders for string fuses for up to eight strings and with a DC load-break switch. The SMA Connection Unit combines up to four strings to each of two output circuits. These two DC electric circuits can be connected to the two MPP tracker inputs of the SunnyTripower (for further information see the installation manual of the SMAConnectionUnit-US at www.SMA-Solar.com).

PV modules with a high capacity to ground may only be used if their coupling capacity does not exceed 3.5 μF.

All components must remain within their permitted operating ranges at all times. To protect the PV system against excessive reverse currents under fault conditions, the National

Electrical Code®, Section 690.9, requires overcurrent protection for PV source circuits where

possible short-circuit currents exceed the ampacity of source circuit conductors or the maximum series fuse rating of the PV modules. Typically, this requires string fusing where more than two strings are combined in parallel. Where overcurrent protection is required, National Electrical

Code®, Section 690.35, requires that both positive and negative conductors have overcurrent

protection for ungrounded PV arrays. The product must only be used in countries for which it is approved or released by SMA and the

grid operator. The product is not equipped with a transformer and therefore has no galvanic isolation. Do not use

grounded PV modules with the product. Only ground the mounting frame of the PV modules. If you connect grounded PV modules to the product, the error message Insulation resistance > Check generator occurs.

Use this product only in accordance with the information provided in the enclosed documentation and with the locally applicable standards and directives. Any other application may cause personal injury or property damage.

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2 Safety

Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of SMA. Unauthorized alterations will void guarantee and warranty claims and usually void the operating license. SMA shall not be held liable for any damage caused by such changes.

Any use of the product other than that described in the Intended Use section does not qualify as appropriate.

The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for future reference and observe all instructions contained therein.

The type label must remain permanently attached to the product.

SMA Solar Technology AG

2.2 Safety Information

This section contains safety information that must be observed at all times when working on or with the product.

To prevent personal injury and property damage and to ensure long-term operation of the product, read this section carefully and observe all safety information at all times.

Danger to life due to high voltages of the PV array

When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the DC conductors and the live components of the inverter. Touching the DC conductors or the live components can lead to lethal electric shocks. If you disconnect the DC connectors from the inverter under load, an electric arc may occur leading to electric shock and burns.

• Do not touch non-insulated cable ends.

• Do not touch the DC conductors.

• Do not touch any live components of the inverter.

• Have the inverter mounted, installed and commissioned only by qualified persons with the appropriate skills.

• If an error occurs, have it rectified by qualified persons only.

• Prior to performing any work on the inverter, disconnect it from all voltage sources as described in this document (see Section9, page41).

Danger to life due to electric shock in case of a ground fault

If a ground fault occurs, parts of the system may still be live. Touching live components can lead to lethal electric shocks.

• Ensure that no voltage is present and wait five minutes before touching any parts of the PV system or the inverter.

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Risk of burns from hot surfaces

The surface of the inverter can get very hot. Touching the surface can result in burns.

• Mount the inverter in such a way that it cannot be touched inadvertently.

• Do not touch hot surfaces.

• Wait 30 minutes for the surface to cool sufficiently.

• Observe the safety messages on the inverter.

Damage to the inverter due to moisture and dust intrusion

Dust or moisture intrusion can damage the inverter and impair its functionality.

• Close all enclosure openings of the inverter tightly.

• Never open the inverter when it is raining or snowing, or the humidity is over 95%.

2 Safety

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3 Scope of Delivery

SMA Solar Technology AG

3 Scope of Delivery

Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope of delivery is incomplete or damaged.

Figure 1: Components included in the scope of delivery

Position Quantity Designation

A 1 Inverter

B 1 Wall mounting bracket

C 1 Installation manual, production test report, supplementary

sheet with the default settings

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Model

SB X XXXXXTLUS-

SUNNY BOY

S/N

XXXXXXXXXX

Untilityinteractive 1-phase inverter Made in Germany

SMA Solar Technology AG

www.sma-solar.com

Date of manufactureMM/YYYY

Max. continuous output Power*XXXX Wac Reduced output power rating Operating voltage range (Vac)* MIN NOMINAL MAX

XXX XXX

Operating frequency range (Hz)* MIN NOMINAL MAX

XX.X XX.X XX.X

Max. vontinuous output current*

XX.X Aac @ XXX VXX.X Aac @ XXX V

Output power factor X Max. open circuit input voltage*XXX Vdc Range of input operating DC voltage (MPPT)*

XXX - XXX Cdc @ XXX V XXX - XXX Cdc @ XXX V

Oper.temp.range*-XXX°Fto+XXX°F(-XX°Cto+XX°C)

ThisunitcontainsaResidualCurrentMonitor,Isolation MonitorandInterrupter.Thisunitcontainsalisted PhotovoltaicArc-FaultCircuit-ProtectionofType1

ENCLOSURE TYPE XR (IP54)

*Formoredetailsandfürtighteningtorque, allowablewiresizeandtypeseethe InstallationGuide.

Section 1 of 2

Utility interactive inverter Listet UL 1741 36AN

Utility interactive 1-Phase inverter

TestedTo Comply With FCC Standards

FORHOMEOROFFICEUSE

CCAN/CSAC22.2No.107.1-1UL1699B

DE34

www.sunnyportal.com/register PIC 001800304600117 RID:37XXA3

SMA Solar Technology AG

4 Product Description

4.1 SunnyTripower

The SunnyTripower is a transformerless PV inverter with two MPP trackers which converts the direct current of the PV array to grid-compliant three-phase current and feeds it into the utility grid.

No galvanic isolation

• The AC output/neutral conductor is not bonded to ground inside of the product.

Figure 2: Design of the SunnyTripower

Position Designation

A Thread for screwing in the eye bolts for transport with a crane

B Upper enclosure lid

C Type label

The type label uniquely identifies the inverter. You will require the information on the type label to use the product safely and when seeking customer support from the SMAServiceLine. You will find the following information on the type label:

• Device type (Model)

• Serial number (SerialNo.)

• Date of manufacture

• Device-specific characteristics

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4 Product Description

Position Designation

D Additional label with details for registration in SunnyPortal:

• Internet address of the PV System Setup Assistant

• Identification key (PIC)

• Registration ID (RID)

E Ventilation grid

F Recessed grips

G LEDs

The LEDs indicate the operating state of the inverter:

• Green LED is glowing: operation

• Green LED is flashing: the requirements for the connection to the utility grid have not been met or the inverter has reduced its output power due to excessive temperature.

• Red LED is glowing: an error has occurred that must be rectified by a qualified person (see Section10 "Troubleshooting", page43). You will find the detailed error message in SunnyPortal or SunnyExplorer.

• Blue LED: no function

H Lower enclosure lid

Symbols on the Inverter and on the Type Label

SMA Solar Technology AG

Symbol Explanation

Inverter This symbol is located next to the green LED which indicates feed-in oper-

ation of the inverter.

Observe the documentation This symbol is located next to the red LED which indicates a fault or distur-

bance (see Section10 "Troubleshooting", page43).

Communication This symbol is located next to the blue LED.

The product does not have a transformer.

Equipment Grounding Terminal

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Symbol Explanation

Danger to life due to electric shock The product operates at high voltages. All work on the product must be

carried out by qualified persons only.

Risk of burns due to hot surfaces The product can get hot during operation. Avoid contact during opera-

tion. Allow the product to cool down sufficiently before carrying out any work.

Observe the documentation Observe all documentation supplied with the product.

FCC designation The product complies with the requirements of the applicable FCC stan-

dards.

UL certification mark UL1741 is the standard applied by Underwriters Laboratories to the

product to certify that it meets the requirements of the National Electrical

Code ®, the Canadian Electrical Code® CSA C22.1 and

IEEE‑929‑2000. IEEE 929-2000 provides recommendations regarding the proper equipment and functionality necessary to ensure compatible operation when power generation is connected to the utility grid.

4 Product Description

4.2 Interfaces and Functions

The inverter can be equipped or retrofitted with the following interfaces and functions:

SMASpeedwire/Webconnect

The inverter is equipped with SMA Speedwire/Webconnect as standard. SMA Speedwire/ Webconnect is a type of communication based on the Ethernet standard. This enables inverteroptimized 10/100Mbit data transmission between Speedwire devices in PV systems and the software Sunny Explorer. The Webconnect function enables direct data transmission between the inverters of a small-scale system and the Internet portal SunnyPortal without any additional communication device and for a maximum of 4 inverters per SunnyPortal system. In large-scale PV power plants, data transmission to the Internet portal SunnyPortal is carried out via the SMAClusterController. You can access your SunnyPortal system from any computer with an Internet connection.

Class 1 wiring methods are to be used for field wiring connection to the terminals of the communication interface.

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4 Product Description

SMA Solar Technology AG

RS485 Interface

The inverter can communicate via cables with special SMA communication products via the RS485 interface (information on supported SMAproducts at www.SMA-Solar.com). The RS485 interface can be retrofitted and can be used in place of the SMASpeedwire/Webconnect interface in the inverter.

Class 1 wiring methods are to be used for field wiring connection to the terminals of the communication interface.

Grid Management Services

The inverter is equipped with service functions for grid management. Depending on the requirements of the grid operator, you can activate and configure the functions

(e.g. active power limitation) via operating parameters.

SMAOptiTracGlobalPeak

SMAOptiTracGlobalPeak is an advancement of SMAOptiTrac and allows the operating point of the inverter to follow the optimal operating point of the PV array (MPP) precisely at all times. In addition, with the aid of SMAOptiTracGlobalPeak, the inverter detects several maximum power points in the available operating range, such as may occur particularly with partially shaded strings. You can activate SMAOptiTracGlobalPeak via the operating parameters (see Section8.5 "Setting SMA OptiTrac Global Peak", page39).

Arc-Fault Circuit Interrupter (AFCI)

In accordance with the National Electrical Code®, Article 690.11, the inverter has a system for arc fault detection and interruption.

An electric arc with a power of 300W or greater must be interrupted by the AFCI in the time specified by UL 699B. A tripped AFCI can only be reset manually. The 2011 edition of the

National Electrical Code®, Section 690.11, stipulates that newly installed PV systems attached to a

building must be fitted with a means of detecting and disconnecting serial electric arcs on the DC side. If you prefer not to have that function, you can deactivate the arc-fault circuit interrupter via a communication product (see Section8.4, page39).

QonDemand 24/7

The inverter can supply reactive power by means of QonDemand24/7 covering the entire unit circle around the clock (for details on the configuration refer to the Technical Information "IntegratedPlantControl and QonDemand24/7" at www.SMA-Solar.com).

IntegratedPlantControl

The inverter can display the Q(V) characteristic curve specified by the grid operator by means of IntegratedPlantControl without measuring on the grid-connection point. The inverter can automatically compensate equipment installed between the inverter and the grid-connection point after having activated the function (for information on the system configuration refer to the Technical Information "IntegratedPlantControl and QonDemand24/7" at www.SMA-Solar.com).

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SMA Solar Technology AG

5 Mounting

5.1 Requirements for Mounting

Requirements for the mounting location:

Danger to life due to fire or explosion

Despite careful construction, electrical devices can cause fires.

• Do not mount the inverter in areas containing highly flammable materials or gases.

• Do not mount the inverter in a potentially explosive atmosphere.

☐ Do not mount the inverter on a pillar. ☐ The inverter must be mounted on a solid support surface (e.g. concrete, brickwork, free-

standing constructions). ☐ Do not install the inverter in a living area. ☐ The mounting location must be suitable for the weight and dimensions of the inverter (see

Section14 "Technical Data", page69). ☐ To ensure optimum operation, the ambient temperature should be between -25°C (-13°F) and

60°C (140°F). ☐ The inverter can be mounted in a position that is directly exposed to solar irradiation.

However, it is possible that the inverter may become overheated and its power be reduced as

a result. ☐ Climatic conditions must be met (see Section14 "Technical Data", page69). ☐ The mounting location should be freely and safely accessible at all times without the need for

any auxiliary equipment (such as scaffolding or lifting platforms). Non-fulfillment of these

criteria may restrict servicing.

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5 Mounting

Dimensions for mounting:

SMA Solar Technology AG

Figure 3: Position of the anchoring points

Recommended clearances:

To guarantee optimal operation and adequate heat dissipation for the inverter, the following requirements for clearances should be observed. This will prevent the inverter power output from being reduced due to excessive temperatures. However, smaller clearances are permitted without causing any risk.

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1382 mm

(54.41 in)

2224 mm (87.56 in)

530 mm

(20.87 in)

50 mm

(1.97 in)

400 mm

(15.45 in)

315 mm

(14.45 in)

415 mm

(16.34 in)

438 mm

(17.24 in)

415 mm

(16.34 in)

940 mm

(37.01 in)

(7.48 in)

190 mm

SMA Solar Technology AG

5 Mounting

Prescribed clearances in accordance with the

National Electrical Code

Under certain conditions, the National Electrical Code® specifies greater clearances.

• Ensure that the prescribed clearances in accordance with the National Electrical Code®, paragraph 110.26 and Canadian Electrical Code® CSA C22.1 are adhered to.

☐ Observe the recommended clearances to walls as well as to other inverters or objects. ☐ Ensure adequate clearance on the right-hand side of the inverter below the fan. ☐ If multiple inverters are mounted in areas with high ambient temperatures, increase the

clearances between the inverters and ensure an adequate fresh-air supply, if possible.

Permitted and prohibited mounting positions:

☐ The inverter must only be mounted in one of the permitted positions. This will ensure that no

moisture can penetrate the inverter.

☐ The inverter should be mounted in such a way that LED signals can be read without difficulty.

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5 Mounting

Figure 4: Permitted and prohibited mounting positions:

SMA Solar Technology AG

5.2 Mounting the Inverter

Additionally required mounting material (not included in the scope of delivery):

☐ At least two screws suitable for the support surface (diameter: 10mm at maximum) ☐ At least two washers that are suitable for the screws (diameter: 30mm (1.8in) at maximum) ☐ If necessary, two screw anchors suitable for the support surface and the screws ☐ For transporting the inverter with a crane: two eye bolts suitable for the weight of the inverter

(size: M10)

☐ To secure the inverter from being lifted off: two screws, washers and screw anchors that are

suitable for the support surface

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SMA Solar Technology AG

5 Mounting

Risk of injury when lifting the inverter, or if it is dropped

The inverter weighs 55kg (121lb). There is risk of injury if the inverter is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket.

• Carry and lift the inverter in an upright position with several people without tilting it. With one hand grasp the recessed grip, and with the other hand support the top part of the enclosure. This will prevent the inverter tipping forward.

• If the inverter is to be transported and lifted with a crane, remove the filler plugs on the top of the inverter and screw the eye bolts into the threads.

Risk of burns due to hot enclosure parts

Some parts of the enclosure can get hot during operation.

• Mount the inverter in such a way that it cannot be touched inadvertently during operation.

Procedure:

Risk of injury due to damaged cables

There may be power cables or other supply lines (e.g. gas or water) routed in the wall.

• Ensure that no lines are laid in the wall which could be damaged when drilling holes.

2. Align the wall mounting bracket horizontally on the wall and use it to mark the position of the drill holes. Use at least one hole on the right-hand and left-hand side in the wall mounting bracket.

3. If the inverter is to be secured from being lifted off of the wall mounting bracket, mark the position of the drill holes for the screw that attaches the inverter to the wall mounting bracket. Observe the dimensions of the two anchoring points at the bottom of the inverter rear panel.

4. Set the wall mounting bracket aside and drill the marked holes.

Installation Manual 23STP12-24TL-US-IA-en-16

5 Mounting

SMA Solar Technology AG

5. Insert screw anchors into the drill holes if the support surface requires them.

6. Secure the wall mounting bracket horizontally using screws and washers.

7. Hook the inverter into the wall mounting bracket.

8. If the inverter has been transported with a crane, remove the eye bolts from the threads on the top of the inverter and reinsert the filler plugs.

9. In order to secure the inverter from being lifted off the wall accidentally, attach it to the wall with suitable mounting material. Use both of the lower drill holes on the rear panel of the inverter.

10. Ensure that the inverter is securely in place.

Installation ManualSTP12-24TL-US-IA-en-1624

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