SMA 600-US User manual
CU600-1000US-IA-en-10 | IMEN-CU-US | Version 1.0
CA
US
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
Copyright © 2013 SMA America,LLC. All rights reserved.
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
SMAAmerica,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.
The PowerStore Inc.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
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 NationalElectrical Code®
ANSI/NFPA 70 or the Canadian Electrical Code® CSAC22.1. 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.
The PowerStore Inc.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
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
The PowerStore Inc.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
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.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
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
The PowerStore Inc.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
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