SMA SUNNY BOY 4000-US User manual

SB30-40-US-IA-en-33 | TBUS-SB30_40US | Version 3.3
CA
US
PV Inverter
SUNNY BOY 3000-US / 3800-US / 4000-US
Installation Manual

SMA America, LLC Legal Restrictions
Installation Manual SB30-40-US-IA-en-33 3
Copyright © 2012 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
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
8th Floor
Mississauga, ON L4W 5K5
Canada

Important Safety Instructions SMA America, LLC
4 SB30-40-US-IA-en-33 Installation Manual
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the following products:
• Sunny Boy 3000-US / 3800-US / 4000-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.
Markings on this product
The following symbols are used as product markings with the following meanings.
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.
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.

SMA America, LLC General Warnings
Installation Manual SB30-40-US-IA-en-33 5
General Warnings
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.
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.

General Warnings SMA America, LLC
6 SB30-40-US-IA-en-33 Installation Manual

SMA America, LLC Table of Contents
Installation Manual SB30-40-US-IA-en-33 7
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . 11
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Skills of Electrically Qualified Persons. . . . . . . . . . . . . . . . . . . . 14
2.3 Safety Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Scope of Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Type Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.1 Sunny Boy Type Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.2 DC Disconnect Type Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3 DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5 Ground-Fault Protective Device (GFDI). . . . . . . . . . . . . . . . . . . 23
4.6 Arc-Fault Circuit Interrupter (AFCI) . . . . . . . . . . . . . . . . . . . . . . 24
4.7 Anti-Islanding Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.8 String Fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 Safety during Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 26
5.3 Mounting the Wall Mounting Bracket on a Stone Wall . . . . . . 29
5.4 Mounting the Wall Mounting Bracket on a Wooden Wall
with a Stud or a Post. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5 Mounting the Wall Mounting Bracket on a Wooden Wall
with two Studs or on two Posts . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.6 Mounting the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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8 SB30-40-US-IA-en-33 Installation Manual
5.6.1 Inserting the DC Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.6.2 Mounting the DC Disconnect on the Wall . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.7 Mounting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1 Safety During Electrical Connection . . . . . . . . . . . . . . . . . . . . . 35
6.2 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 36
6.2.1 Interior Connection Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.2.2 Connection Area of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2.3 Connection Area of the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.3 AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.3.1 Inserting the AC Cables into the DC Disconnect. . . . . . . . . . . . . . . . . . . . . . 39
6.3.2 Connecting the AC Cables to the DC Disconnect. . . . . . . . . . . . . . . . . . . . . 40
6.3.3 Connecting the AC Cable of the DC Disconnect to the Inverter . . . . . . . . . . 41
6.4 DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.4.1 Inserting the DC Cables into the DC Disconnect. . . . . . . . . . . . . . . . . . . . . . 42
6.4.2 Grounding the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.4.3 Grounding the DC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.4.4 Connecting the DC Cables to the DC Disconnect. . . . . . . . . . . . . . . . . . . . . 46
6.4.5 Connecting the DC Cable of the DC Disconnect to the Inverter . . . . . . . . . . 47
6.5 Connecting the Combiner Box to the DC Disconnect . . . . . . . . 49
7 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.1 Automatic Line Voltage Detection. . . . . . . . . . . . . . . . . . . . . . . 51
7.2 Possible Grounding Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3 Jumper Assignments for Grounding Systems . . . . . . . . . . . . . . 53
7.4 Changing the Display Language . . . . . . . . . . . . . . . . . . . . . . . 55
8 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . 56
9 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9.1 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9.2 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

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9.3 Opening the DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9.4 Closing the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.1 LED Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.2 Measurement Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.3 Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.4 Display messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.4.1 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.4.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
10.4.3 Resetting "Error AFCI" Disturbance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
11 Cleaning and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.1 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.2 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
11.3 Checking the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
11.4 Checking the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 82
11.5 Checking and Replacing the DC Varistors . . . . . . . . . . . . . . . . 82
11.6 Checking the PV Plant for a ground-fault . . . . . . . . . . . . . . . . . 85
11.7 Replacing the Ground Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
11.8 Replacing String Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
12 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
12.1 DC⁄AC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
12.1.1 Sunny Boy 3000-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
12.1.2 Sunny Boy 3800-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
12.1.3 Sunny Boy 4000-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
12.2 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
12.3 Protection Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
12.4 DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
12.5 Torques and Cable Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Table of Contents SMA America, LLC
10 SB30-40-US-IA-en-33 Installation Manual
12.6 Tripping Limits/Tripping Times. . . . . . . . . . . . . . . . . . . . . . . . . . 97
13 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
14 Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . 98
15 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99