SMA Sunny Boy 3800U Bedienungsanleitung

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Installation Guide

SB3800U-12:SE2006 SMA America i

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, Inc.

SMA America 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 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 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.

SMA America, Incorporated

12438 Loma Rica Drive

Grass Valley, California 95945

Tel 530.273.4895

Fax 530.274.7271

www.sma-america.com

Revision History

Rev. No. Date By Version

1.0 May 04, 2005 YS 1st Edition

2.0 June, 2005 JP 1st US Edition

2.1 August, 2005 JP 2nd US Edition

2.2 November, 2005 JP 3rd US Edition

2.3 February, 2006 JP 4th US Edition

2.4 May, 2006 JP 5th US Edition

Installation Guide

ii SMA America SB3800U-12:SE2006

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for the Sunny Boy 3800U that must be

followed during installation and maintenance of the inverter.

The Sunny Boy 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. To reduce the risk of personal injury

and to ensure the safe installation and operation of the Sunny Boy, you must carefully

read and follow all instructions, cautions and warnings in this Installation Guide.

Safety and Hazard Symbols

This symbol is used to call attention to important information that

you must have when installing and/or operating the Sunny Boy.

Failure to read and follow instructions marked with this symbol

could result in injury or death and/or damage to the equipment.

This symbol appears beside instructions and warnings that deal

with dangerous voltages that can injure or kill people who come

in contact with them.

This symbol appears beside terminations that are connected to

earth-ground.

Installation Guide

SB3800U-12:SE2006 SMA America iii

Warnings

WARNING: 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 dam-

age to or destruction of part or all of the SMA equipment and/

or other equipment connected to the SMA equipment or per-

sonal injury.

Warnings and Cautions may also be accompanied by one or more of the safety and

hazard symbols described above to indicate the type of hazard described therein.

Other Symbols

In addition to the safety and hazard symbols described on the previous pages, the

following symbol is also used in this Installation Guide:

This symbol accompanies notes that call attention to supplementary

information that you should know and use to ensure optimal operation

of the system.

All electrical installations must be done in accordance with

the local and National Electrical Code ANSI/NFPA 70.

The Sunny Boy contains no user-serviceable parts except

for the fan on the bottom of the enclosure and the filter

behind the fan as well as the exhaust fin on the left hand

side of the unit. For all other repair and maintenance

always return the unit to an authorized SMA Service

Center.

Before installing or using the Sunny Boy, read all of the

instructions, cautions, and warnings on the Sunny Boy, the

PV array, and in this Installation Guide.

Before connecting the Sunny Boy 3800U to the electrical

utility grid, contact the local utility company. This

connection must be made only by qualified personnel.

Installation Guide

iv SMA America SB3800U-12:SE2006

PV arrays produce electrical energy when exposed to light

and thus can create an electrical shock hazard. Wiring of

the PV-arrays should only be performed by qualified

personnel.

Warranty

All Sunny Boy inverters sold in the USA have a five-year warranty, as indicated on the

warranty card included in the Sunny Boy shipping container. For warranty coverage, or

if you have questions about the Sunny Boy warranty, contact SMA America at the

address, telephone number or Web site listed on page i (to send E-mail, see the Contact

section of the SMA America Web site).

SB3800U-12:SE2006 SMA America v

Contents

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Safety and Hazard Symbols . . . . . . . . . . . . . . . . . . . . . . . . . ii

Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Other Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

1 Introduction

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 Unpacking and Inspection

3 Mounting

Choosing a Mounting Location . . . . . . . . . . . . . . . . . . . . . . 3-1

Dimensions and Recommended Clearances . . . . . . . . . . . . . 3-3

Mounting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

4 AC Voltage Configuration

Opening the Sunny Boy 3800U . . . . . . . . . . . . . . . . . . 4-1

Locating Internal Components . . . . . . . . . . . . . . . . . . . . 4-2

5 Wiring the Sunny Boy 3800U

Wiring the AC Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

AC Connection Requirements . . . . . . . . . . . . . . . . . . . . 5-3

Connecting the AC Wires . . . . . . . . . . . . . . . . . . . . . . . 5-5

Wiring the DC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

DC Connection Requirements . . . . . . . . . . . . . . . . . . . . 5-7

Connecting the DC Wires . . . . . . . . . . . . . . . . . . . . . . . 5-9

Connecting Communication Cables . . . . . . . . . . . . . . . . . . 5-12

RS-232 Communication . . . . . . . . . . . . . . . . . . . . . . . 5-12

RS-485 Communication . . . . . . . . . . . . . . . . . . . . . . . 5-15

Replacing the Cover. . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

6 Commissioning

7 Displays and Messages

LED Fault Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Status Messages on the LCD . . . . . . . . . . . . . . . . . . . . 7-11

vi SMA America SB3800U-12:SE2006

Communication Options. . . . . . . . . . . . . . . . . . . . . . . 7-14

8 Troubleshooting

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

9 Maintenance

Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Cleaning the Exhaust Vent . . . . . . . . . . . . . . . . . . . . . . 9-2

Testing the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

10 Technical Specifications

FCC Compliance Information . . . . . . . . . . . . . . . . . . . 10-1

Sunny Boy SB3800U Wiring Diagram. . . . . . . . . . . . . 10-2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

SB3800U-12:SE2006 SMA America 1-1

Section 1:

Introduction

This installation guide provides all the information needed to install, commission and

operate a Sunny Boy 3800U (SB3800U) grid-tied photovoltaic (PV) inverter.

Note: To help avoid problems during the installation,

familiarize yourself with the installation process by reading

the entire Installation Guide before starting the installation.

WARNING: Lethal voltages are present at various points

in a PV system. For safety reasons, it is recommended that

only qualified personnel install and operate this equip-

ment.

Product Overview

The SB3800U is a DC to AC grid-tied utility interactive inverter for use with photovoltaic

(PV), fuel cell, wind turbine and other sources of DC power.

In general, the SB3800U takes power from a DC source (PV modules) and converts it to

AC power for the utility grid. This power is delivered first to local loads (household

appliances, lights, motor loads, etc.), with any excess power fed to the utility. The power

consumed by the local loads reduces the power needed from the utility. Excess power

may actually “spin the utility meter backwards” depending on the type of meter in your

system. This power may also be recorded as power credits by the utility company

depending on the interconnection agreement. An example of basic system components

is shown in Figure 1-1.

Figure 1-1 SB3800U Installed in a Utility Interactive PV System

Störung

Failure

Betrieb

Operation

Erdschluss

EarthFault

PVArray

Sunny Boy 3800U

Utility Grid

Meter

1-2 SMA America SB3800U-12:SE2006

Note: Policies vary from one utility company to another. Consult

with a representative of the local utility company before

designing and installing a PV system.

Safety

Anti-Islanding Protection

Islanding is a condition that can occur if the utility grid is disconnected while the

SB3800U is operating and the remaining load is resonant at 60 Hz and matches the

output of the SB3800U perfectly. This condition is highly unlikely and had never been

witnessed outside of a controlled laboratory. Nevertheless, the SB3800U incorporates

an advanced active islanding protection algorithm to insure that the system will not

export power into a balanced 60 Hz resonant load while the utility is disconnected. The

SB3800U periodically injects both leading and lagging reactive current into the utility

grid. This method has been proven by U.S. regulatory agencies to effectively destabilize

and disconnect from a balanced island condition.

PV Ground Fault Detection and Interruption

The SB3800U is equipped with a ground fault detection device. If a ground fault current

greater than 1 Amp is detected, the SB3800U will shut down and display the fault

condition on the user interface display. Once the ground fault is located and corrected,

the ground fault error will need to be manually cleared and the inverter will then resume

normal operation.

PV Series Fusing

Series fusing may be required depending on the type of PV module used in the system.

See NEC 690.9

Interconnection Code Compliance

The SB3800U has been tested and certified by ETL to meet the requirements of UL1741

Static Inverters and Charge Controllers for use in Photovoltaic Power Systems as well

as IEEE-929-2000 Recommended Practice for Utility Interface of Photovoltaic Systems

and IEEE 519 Standard Practices and Requirements for Harmonic Control in Electrical

Power Systems. The SB3800U is also ETL listed under UL1741 for use in Canada.

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