SMA DU-SC-US User Manual
CA
US
AC/DC Disconnect Unit
Disconnect Unit for Sunny Central 250U/500U/
500HE‑US and Sunny Central CP
Unpacking
DISU_SCUS-AP-eng-IUS110911 | 98-4051011 | Version 1.1
SMA America, LLC Legal Restrictions
Copyright © 2011 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, 8th Floor
Mississauga, ON L4W 5K5, Canada
Unpacking DISU_SCUS-AP-eng-IUS110911 3
Important Safety Instructions SMA America, LLC
%"/(&3
8"3/*/(
$"65*0/
/05*$&
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the DisconnectUnit for Sunny Central 250U/500U/
500HE-US and Sunny Central CP, that must be followed during installation and maintenance of the
pv inverter.
The DisconnectUnit for Sunny Central 250U/500U/500HE-US and Sunny Central CP 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 Disconnect
Unit for DisconnectUnit for Sunny Central 250U/500U/500HE-US and Sunny Central CP. To
reduce the risk of personal injury and to ensure the safe installation and operation of the Disconnect
Unit for SunnyCentral 250U/500U/500HE-US and Sunny Central CP, you must carefully read and
follow all instructions, cautions and warnings in this technical description.
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 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.
4 DISU_SCUS-AP-eng-IUS110911 Unpacking
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 technical description:
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 only be performed
as described in the documentation of the product.
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.
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.
UL1741 is the standard applied by Underwriters Laboratories to the Disconnect Unit for
Sunny Central 250U/500U/500HE-US and Sunny Central CP to certify that it meets the
requirements of the NationalElectricalCode
®
, 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.
Unpacking DISU_SCUS-AP-eng-IUS110911 5
General Warnings SMA America, LLC
8"3/*/(
General warnings
All electrical installations must be done in accord ance w ith th e local and NationalElectrical Code®
ANSI/NFPA 70 or the Canadian Electrical Code® CSAC22.1.
Before installing or using the Disconnect Unit for Sunny Central 250U/500U/500HE-US and
Sunny Central CP, read all of the instructions, cautions, and warnings on the Disconnect Unit for
Sunny Central 250U/500U/500HE-US and Sunny Central CP in this technical description.
Before connecting the Disconnect Unit for Sunny Central 250U/500U/500HE-US and Sunny
Central CP to the power distribution grid, contact the local power distribution grid company. This
connection must be made only by qualified personnel.
Wiring of the Disconnect Unit for Sunny Central 250U/500U/500HE-US and Sunny Central CP
must be made by qualified personnel only.
6 DISU_SCUS-AP-eng-IUS110911 Unpacking
SMA America, LLC Table of Contents
Table of Contents
1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Scope of Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Transport Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 Transport Packaging and Center of Gravity . . . . . . . . . . . . . . . 12
4.2 Symbols on the Transport Packaging . . . . . . . . . . . . . . . . . . . . 14
4.3 Technical Data for the Transport Packaging . . . . . . . . . . . . . . . 14
5 Transporting the Packaged Disconnect Unit . . . . . . . . . . 15
6 Unpacking the Disconnect Unit . . . . . . . . . . . . . . . . . . . . . 16
6.1 Removing the Film . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Removing the Lashing Straps . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Removing the Clamping Bands. . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4 Removing the Box Components . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Transporting the Disconnect Unit Without Packaging . . 21
7.1 Transporting the Disconnect Unit Using a Crane . . . . . . . . . . . 21
7.2 Transporting the Disconnect Unit Using a Forklift Truck . . . . . . 22
8 Preparing the Disconnect Unit for Installation . . . . . . . . . 25
8.1 Opening the Disconnect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2 Mounting the Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.3 Closing the Disconnect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Unpacking DISU_SCUS-AP-eng-IUS110911 7
SMA America, LLC
8 DISU_SCUS-AP-eng-IUS110911 Unpacking
SMA America, LLC Information on this Manual
1 Information on this Manual
Validity
This manual applies to the Disconnect Unit of the following device types:
• Sunny Central 250U
• Sunny Central 500U
• Sunny Central 500HE-US
• Sunny Central 500HE-CA
• Sunny Central CP
Target Group
This manual is intended for skilled workers. Only qualified personnel are allowed to perform the tasks
set forth in this manual.
Definition of the Target Group
Skilled workers have been trained and briefed adequately and have the capability and knowledge
to install and operate the equipment. Skilled workers are trained to deal with the dangers and
hazards involved in transporting and assembling the equipment.
Additional Information
Keep all manuals for the Disconnect Unit and for the installed components together with the system
documentation. All documents must be available at all times. The documents listed below are included
in the scope of delivery for your Disconnect Unit.
The following information is contained in these documents:
Information Document Type
Setup and installation of the Disconnect Unit Installation Guide
Unpacking, transporting and preparing the Disconnect Unit Unpacking manual
Disconnect Unit circuit diagram Circuit diagrams
Additional information is available at www.SMA-America.com.
Nomenclature
In this document, the Disconnect Unit for Sunny Central 250U/500U/500HE-US/CA and Sunny
Central CP are hereinafter referred to as the Disconnect Unit.
In this document, SMA America Production, LLC, and SMA Solar Technology Canada Inc. are
hereinafter referred to as SMA.
Unpacking DISU_SCUS-AP-eng-IUS110911 9
Scope of Supply SMA America, LLC
2Scope of Supply
The Disconnect Unit is supplied in a box. This box contains the Disconnect Unit, the lid for the
Disconnect Unit and an accessories kit.
Ch eck the sco pe o f su ppl y fo r comple ten ess and for any ext ern al d ama ge. Ple ase con tac t yo ur d eal er
if the scope of supply is not complete or you find any damage.
The scope of supply is listed in this chapter.
Accessories Kit
The accessories kit is packed in a box. The box is called Accessories.
Supplied Components
Number Description
1 TX screwdriver T25
1 TX screwdriver T30
1 Warning sticker SC-US positive/negative grounding
1 Disconnect Unit Sunny Central US Installation Guide
1 Circuit diagram for DU-SC-US, EN
10 DISU_SCUS-AP-eng-IUS110911 Unpacking
SMA America, LLC Storage
/05*$&
/05*$&
3Storage
Damage to property caused by penetrating moisture!
Damage to electrical component parts caused by penetrating moisture.
• The Disconnect Unit must be closed during storage.
• Storage for six months or more permissible in dry locations only.
• Do not store the Disconnect Unit in the transport packaging for longer than six months.
Damage to property caused by improper storage!
Improper storage conditions may damage the Disconnect Unit.
• The foundation must be suitable for the weight of the Disconnect Unit of 1 477 lbs. (685 kg).
The foundation may only deviate from a level of 0.25 %.
• Only store the Disconnect Unit at temperatures between − 40 °F ... +140 °F
( − 40 °C ... +60 °C).
Ensure function in the case of longer storage times
If the Disconnect Unit is stored for longer than one year, check the functionality of the
Disconnect Unit every 12 months. Move all switches to the "ON" position and the "OFF"
position ten times. This guarantees the function of the switches.
Unpacking DISU_SCUS-AP-eng-IUS110911 11
Loading...