SMA 600-US User manual

CU600-1000US-IA-en-10 | IMEN-CU-US | Version 1.0

Accessories for PV Inverters

SMA CONNECTION UNIT 600-US / 1000-US

Installation Manual

The PowerStore Inc.

(888) 244-2979

12621 E FM 917 Suite A Alvarado, Tx 76009

The PowerStore Inc.

(888) 244-2979

12621 E FM 917 Suite A Alvarado, Tx 76009

SMA America, LLC Legal Provisions

Installation Manual CU600-1000US-IA-en-10 3

Legal Provisions

No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form

or by any means, 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

SMAAmerica,LLC and SMA Solar Technology Canada Inc. reserve 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 and SMA Solar Technology Canada Inc. is under

license.

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

The PowerStore Inc.

(888) 244-2979

12621 E FM 917 Suite A Alvarado, Tx 76009

IMPORTANT SAFETY INSTRUCTIONS SMA America, LLC

4 CU600-1000US-IA-en-10 Installation Manual

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for the following products:

• CU 600-US-10 (SMA Connection Unit 600-US)

• CU 1000-US-10 (SMA Connection Unit 1000-US)

This manual must be followed during installation and maintenance.

The product 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 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.

The PowerStore Inc.

(888) 244-2979

12621 E FM 917 Suite A Alvarado, Tx 76009

SMA America, LLC IMPORTANT SAFETY INSTRUCTIONS

Installation Manual CU600-1000US-IA-en-10 5

Warnings on this product

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

Symbol Description

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.

Risk of Fire

Improper installation of the product may cause a fire.

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.

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General Warnings SMA America, LLC

6 CU600-1000US-IA-en-10 Installation Manual

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, regulation 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.

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

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SMA America, LLC Table of Contents

Installation Manual CU600-1000US-IA-en-10 7

Table of Contents

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

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Skills of Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.3 DC Switch-Disconnector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.4 String Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.5 Reverse Polarity Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1 Requirements for Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2 Mounting the Connection Unit on a Wall . . . . . . . . . . . . . . . . . . . . . 23

5.3 Mounting the Connection Unit to a Post . . . . . . . . . . . . . . . . . . . . . . 25

6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.1 Safety during Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . 26

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

6.2.1 Enclosure Openings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.2.2 Interior View of the Connection Unit 600-US. . . . . . . . . . . . . . . . . . 28

6.2.3 Interior View Connection Unit 1000-US . . . . . . . . . . . . . . . . . . . . . 29

6.3 Connecting Conduits to the Connection Unit. . . . . . . . . . . . . . . . . . . 30

6.4 Connecting the Grounding Conductor . . . . . . . . . . . . . . . . . . . . . . . 31

6.5 Connecting the PV Array to the Connection Unit 600-US . . . . . . . . . 33

6.6 Connecting the PV Array to the Connection Unit 1000-US. . . . . . . . 35

6.7 Operating the Reverse Polarity Detection . . . . . . . . . . . . . . . . . . . . . 36

6.8 Connecting the DC Output Cable for the Inverter to the

Connection Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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Table of Contents SMA America, LLC

8 CU600-1000US-IA-en-10 Installation Manual

7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.1 Inserting the String Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.2 Commissioning the Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . 42

8 Disconnecting the Connection Unit from Voltage Sources . . . 43

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.1 LED Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.2 Replacing the String Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 Disassembling the Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.2 Packing the Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.3 Disposing of the Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

The PowerStore Inc.

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SMA America, LLC 1 Information on this Document

Installation Manual CU600-1000US-IA-en-10 9

1 Information on this Document

Validity

This document is valid for the following device types:

• CU 600-US-10 (SMA Connection Unit 600-US)

• CU 1000-US-10 (SMA Connection Unit 1000-US)

Target Group

This document is intended for qualified persons. Only qualified personnel with the appropriate skills

are allowed to perform the tasks described in this document (see Section 2.2 "Skills of Qualified

Persons", page 11).

Additional Information

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

Symbols

Nomenclature

Document title Document type

Sunny Tripower 12000TL-US / 15000TL-US / 20000TL-US /

24000TL-US

Installation manual

Sunny Boy 6000TLUS / 7000TLUS / 8000TLUS / 9000TLUS /

10000TLUS / 11000TLUS

Installation manual

Symbol Explanation

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

safety-relevant

☐ Indicates an essential requirement for achieving a specific goal

☑ Desired result

✖ A problem that could occur

Complete designation Designation in this document

SMA America Production, LLC SMA

SMA Solar Technology Canada Inc. SMA

SMA Connection Unit 600-US / 1000-US Connection Unit, product

The PowerStore Inc.

(888) 244-2979

12621 E FM 917 Suite A Alvarado, Tx 76009

2 Safety SMA America, LLC

10 CU600-1000US-IA-en-10 Installation Manual

2 Safety

2.1 Intended Use

The Connection Unit is a String-Combiner to which up to eight strings can be connected.

Figure 1: Example design of a PV system with Connection Unit

The Connection Unit is suitable for indoor and outdoor use.

The Connection Unit must only be used in ungrounded PV systems. Do not use grounded PV modules

with the Connection Unit. Only ground the mounting frame of the PV modules.

All DC inputs of an ungrounded PV system must be equipped with an overcurrent protection

according to the National Electrical Code® NEC 690. The Connection Unit shall be installed per the

requirements contained in Section690.35 of the National Electrical Code®, ANSI/NFPA 70. The

Connection Unit must only be used with the following transformerless SMA inverters:

• SB 6000TLUS-12 / 7000TLUS-12 / 8000TLUS-12 / 9000TLUS-12 / 10000TLUS-12 /

11000TLUS-12

• STP 12000TL-US-10 / 15000TL-US-10 / 20000TL-US-10 / 24000TL-US-10

For safety reasons, it is forbidden to modify the product or install components that are not explicitly

recommended for this product or distributed by SMA.

Use this product only in accordance with the enclosed documentation and with the local standards

and directives. Any other use can result in personal injury or property damage.

• Do not mount the product in areas where flammable gases may occur.

• Do not mount the product in areas where highly flammable materials are stored.

• Do not install the product in potentially explosive atmospheres.

Item Designation

APV modules

B Connection Unit

C Sunny Tripower

D Circuit breaker

E Utility grid

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