SMA SBCBTL6 User Manual

Sunny Boy Accessories

SUNNY BOY COMBINER BOX TLUS SBCBTL6

Installation Guide

SBCBTLUS-IUS094510 | IMUS-SBCBTLUS | Version 1.0

SMA America, LLC Legal Restrictions

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

SMA America,LLC makes no 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 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 SMAAmerica,LLC reserves the right to make changes without notice and 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 these are not marked separately. Missing designations do not mean that a product or brand is not a registered trademark.

The Bluetooth

word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and

any use of such marks by SMA America,LLC is under license.

SMA America, LLC

3801 N. Havana Street

Denver, CO 80239 U.S.A.

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Important Safety Instructions SMA America, LLC

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for the Sunny Boy Combiner Box that must be followed during installation and maintenance of the Sunny Boy Combiner Box.

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

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.

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 is used to address practices not related to personal injury.

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SMA America, LLC Important Safety Instructions

Other Symbols in this document

In addition to the safety and hazard symbols described on the previous pages, the following symbol is also used in this installation guide:

Information This symbol accompanies notes that call attention to supplementary information that you

should know and use to ensure optimal operation of the system.

Markings 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 be done as

described in it‘s documentation.

Electric arc hazards The product has large electrical potential differences between its conductors. Arc flashes

can occur through air when high-voltage current flows. Do not work on the product during operation.

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

operation.

Earth Ground

Observe the operating instructions Read the product’s documentation before working on it. Follow all safety precautions

and instructions as described in the documentation.

UL1741 is the standard applied by Underwriters Laboratories to the Sunny Boy Combiner Box to certify that it meets the requirements of the National Electrical Code

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General Warnings SMA America, LLC

General Warnings

All electrical installations must be done in accordance with the local and National Electrical Code

AN SI/ NFPA 70 . Fo r in sta lla tio n in Can ada the inst allati ons mus t be done

in accordance with applicable Canadian standards. The Sunny Boy Combiner Box 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 Sunny Boy Combiner Box, read all of the instructions,

cautions, and warnings on the Sunny Boy Combiner Box in this installation guide. Before connecting the Sunny Boy Combiner Box to the electrical utility grid, contact the

local utility company. This connection must be made only by qualified personnel. Wiring of the Sunny Boy Combiner Box must be made by qualified personnel only.

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SMA America, LLC Table of Contents

Table of Contents

1 Notes on this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1 Appropriate usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1 Unpacking and inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3 Identifying the Sunny Boy Combiner Box . . . . . . . . . . . . . . . . . 13

4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Selecting the mounting location . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2.1 Conditions for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3 Wall mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3.1 Stone wall mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3.2 Wood wall mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3.3 Mounting the Sunny Boy Combiner Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5 Inserting the strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1 Connection area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2 Fuse sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.3 Connecting equipment ground . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.4 Connecting PV modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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Table of Contents SMA America, LLC

6.4.1 Inserting the string fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4.2 Connecting the negative strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.4.3 Connecting the positive strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.5 Connecting the inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.5.1 Connecting DC+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.5.2 Connecting DC − . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

8 Opening and closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.1 Opening the Sunny Boy Combiner Box . . . . . . . . . . . . . . . . . . 27

8.2 Closing the Sunny Boy Combiner Box . . . . . . . . . . . . . . . . . . . 28

9 Replacing string fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

11.1 Cable requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

12 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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SMA America, LLC Notes on this manual

1 Notes on this manual

This manual describes the installation and commissioning of the Sunny Boy Combiner Box SBCBTL6. Keep this manual in a convenient place for future reference

1.1 Target group

This manual is for qualified personnel only. Qualified personnel have received training and have demonstrated skills and knowledge in the construction and operation of the device. Qualified personnel are trained to deal with the dangers and hazards involved in installing electric devices.

1.2 Validity

This manual is valid for the Sunny Boy Combiner Box TLUS. It does not cover any details concerning connected equipment. Information concerning the connected equipment is provided by the manufacturer.

1.3 Nomenclature

In this document SMA America Production, LLC is referred to in the following as SMA. In this manual the Sunny Boy Combiner Box TLUS is referred to as Sunny Boy Combiner Box.

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Security SMA America, LLC

2 Security

2.1 Appropriate usage

The Sunny Boy Combiner Box is a string combiner connecting up to 6 strings and linking them to the inverter. All inputs must be fused in accordance with National Electrical Code® NEC 690. The Combiner Box is designed for the use with transformerless SMA PV inverters.

The Sunny Boy Combiner Box can only be used in ungrounded array installations.

Principle of a PV power system with the Sunny Boy Combiner Box

Position Description

APV modules B Sunny Boy Combiner Box C Sunny Boy with DC Disconnect D AC main circuit breaker ELoad

F Meter

GGrid

Do not use the Sunny Boy Combiner Box for purposes other than those described here. Alternative uses, modifications to the Sunny Boy Combiner Box or the installation of components not expressly recommended or sold by the manufacturer void the warranty claims and operation permission.

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SMA America, LLC Security

2.2 Safety precautions

DANGER

Risk of electric shock due to high voltages inside the Sunny Boy Combiner Box. Death or serious injuries will result.

• All work on the Sunny Boy Combiner Box must be carried out by qualified personnel only.

• All work on the Sunny Boy Combiner Box must be done in accordance with this manual only.

• Pay attention to all safety precautions.

WARNING

Risk of electric shock during operation of a damaged Sunny Boy Combiner Box. Death or serious injuries will result.

• The Sunny Boy Combiner Box may only be used when it is technically faultless.

• Operate the Sunny Boy Combiner Box only if no damage is visibly evident.

• Inspect the Sunny Boy Combiner Box for damage on a regular basis.

• Ensure that all external safety features are freely accessible at all times, and that they are regularly tested for correct functionality.

NOTICE

Electrostatic discharge is possible when components are touched. Damage to components will result.

• Follow ESD protective provisions.

• Remove existing electrostatic charges by touching a grounded metal surface (e.g. housing).

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