SMA SB 5000-US User Manual

4 (1)

PV Inverter

SUNNY BOY 5000-US / 6000-US / 7000-US / 8000-US

Installation Manual

SB50US-80US-IA-en-37 | TBUS-SB50_60_70US | Version 3.7

SMA America, LLC

Legal Restrictions

Nopartofthis documentmaybereproduced,storedin aretrievalsystem,ortransmitted,inanyform or by any means, electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA America, LLC.

Neither SMA America, LLC nor SMASolar TechnologyCanada 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 anyparticularpurpose.Allsuchwarrantiesareexpresslydisclaimed.NeitherSMAAmerica, LLCnor 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

Installation Manual

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Important Safety Instructions

SMA America, LLC

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for Sunny Boy inverter, 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 SunnyBoy. To reduce the riskof personalinjury and to ensure the safeinstallation and operationoftheSunnyBoy,youmustcarefullyreadandfollowallinstructions,cautionsandwarnings in this installation guide.

Warnings in this document

Awarningdescribesahazardtoequipmentorpersonnel.Itcallsattentiontoaprocedureorpractice, which,ifnotcorrectlyperformedoradheredto, couldresultindamagetoordestructionofpartorall of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.

DANGER

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to personal injury.

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Installation Manual

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 installation guide:

Information

This symbol accompanies notes that call attention to supplementary information that you must 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.

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.

Evaluated to the requirements of the Underwriters Laboratories Standard for Safety for Inverters, Converters, Controllers and Interconnection System Equipment for Use With

Distributed Energy Resources, UL 1741.

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General Warnings

SMA America, LLC

General warnings

All electrical installations must be done 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 inverter, 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 inverter.

The Sunny Boy contains no user-serviceable parts except for the fans on the bottom of the enclosure and the filters behind the fans as well as the handle covers on the sides of the unit. For all repair and maintenance, always return the unit to an authorized SMA Service Center.

BeforeinstallingorusingtheSunnyBoy,readalloftheinstructions,cautions,andwarnings on the Sunny Boy in this installation guide.

Before connecting the Sunny Boy to the electrical utility grid, contact the local utility company. This connection must be made only by qualified personnel.

Wiring of the Sunny Boy must be made by qualified personnel only.

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Installation Manual

SMA America, LLC

Table of Contents

1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . 11

1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.3 Storing the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.4 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.5 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.2 Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.3 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3 Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . 18

3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 AC Voltage Configuration. . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 Locating Internal Component Parts. . . . . . . . . . . . . . . . . . . . . . 20 4.3 AC Voltage Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.4 Jumper for System Configuration . . . . . . . . . . . . . . . . . . . . . . . 24

5 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.2 Requirements for the Mounting Location. . . . . . . . . . . . . . . . . . 27 5.3 Mounting with Wall Mounting Bracket. . . . . . . . . . . . . . . . . . . 29

5.3.1 Possibilities for Mounting the Wall Mounting Bracket. . . . . . . . . . . . . . . . . . 31 5.3.2 Mounting the Wall Mounting Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.4 Mounting the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.4.1 Mounting the DC disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.4.2 Mounting the Sunny Boy on a Wall Mounting Bracket . . . . . . . . . . . . . . . . 35

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Table of Contents		SMA America, LLC
6	Electrical Connection . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 36
6.1	Connection Area of the Sunny Boy. . . . . . . . . . . . . . .	. . . . . . . 37
6.2	Sunny Boy Circuit Diagrams. . . . . . . . . . . . . . . . . . . . .	. . . . . . 38
6.2.1	Wiring with DC disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 39
6.3	Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 40
6.4	Opening the DC Disconnect. . . . . . . . . . . . . . . . . . . . .	. . . . . . 41
6.5	AC Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 42
6.5.1	AC Connection Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 42
6.5.2	AC Connection in the DC Disconnect. . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 43
6.5.3	Connecting the AC Cables in the Sunny Boy . . . . . . . . . . . . . . . .	. . . . . . . . 44
6.6	DC Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 46
6.6.1	DC Connection Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 47
6.6.2	DC Input Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 48
6.6.3	Connecting the DC Cables in the DC disconnect . . . . . . . . . . . . .	. . . . . . . . 49
6.6.4	DC Connection with Additional DC Distribution . . . . . . . . . . . . . .	. . . . . . . . 54
6.7	Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 55
6.8	Closing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 56
6.9	Closing the DC Disconnect. . . . . . . . . . . . . . . . . . . . . .	. . . . . . 57
7	Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 58
7.1	Switching On the Sunny Boy . . . . . . . . . . . . . . . . . . . .	. . . . . . 58
7.2	The Sunny Boy Does Not Resume Operation. . . . . . . .	. . . . . . 59
8	Displays and Messages. . . . . . . . . . . . . . . . . . . . .	. . . . . . 62
8.1	LED Operation Indicators . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 63
8.2	LED Fault Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 66
8.3	Status Messages on the LCD Display. . . . . . . . . . . . . .	. . . . . . 70
8.4	Setting the Display Language. . . . . . . . . . . . . . . . . . . .	. . . . . . 72
8.5	Measuring Channels and Parameters. . . . . . . . . . . . . .	. . . . . . 72
8.5.1	Measurement Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 73
8.5.2	Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 74

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Table of Contents

8.5.3 Operating Parameters of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 8.5.4 Operating Parameters of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 8.5.5 Fixed Operating Parameters of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . 77

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

9.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 9.2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

10.1 Cleaning the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 10.2 Cleaning the Handle Covers . . . . . . . . . . . . . . . . . . . . . . . . . . 83 10.3 Checking the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 83 10.4 Fan Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 10.5 Exchanging the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

10.5.1 Exchanging the GFDI Fuse within the Sunny Boy . . . . . . . . . . . . . . . . . . . . . 86 10.5.2 Exchanging PV String Fuses within the DC disconnect . . . . . . . . . . . . . . . . . 86

10.6 Testing and Replacing the DC Varistors . . . . . . . . . . . . . . . . . . 88

11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

11.1 Sunny Boy 5000-US (SB 5000US and SB 5000US-12). . . . . 91 11.2 Sunny Boy 6000-US (SB 6000US and SB 6000US-12). . . . . 93 11.3 Sunny Boy SB 7000-US (SB 7000US and SB 7000US-12) . . 95 11.4 Sunny Boy SB 8000-US (SB 8000US and SB 8000US-12) . . 97 11.5 DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 11.6 Trip Limits/Trip Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 11.7 Torque Values and Cable Sizes . . . . . . . . . . . . . . . . . . . . . . .101

12 Spare Parts and Accessories. . . . . . . . . . . . . . . . . . . . . . 101 13 Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . 102 14 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

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SMA America, LLC

Information on this Manual

1 Information on this Manual

1.1 Validity

Thisguidedescribesthemounting,installation,commissioningandmaintenanceofthefollowingSMA inverters:

•Sunny Boy 5000-US (SB 5000US and SB 5000US-12)

•Sunny Boy 6000-US (SB 6000US and SB 6000US-12)

•Sunny Boy 7000-US (SB 7000US and SB 7000US-12)

•Sunny Boy 8000-US (SB 8000US and SB 8000US-12)

This guide does not contain any information on the devices that are connected to the Sunny Boy. Information concerning the connected devices is available from the manufacturers of the devices.

1.2 Target Group

This manual is for qualified personnel. Qualified personnel have received training and have demonstrated skills and knowledge in the construction and operation of this device. Qualified personnel are trained to deal with the dangers and hazards involved in installing electric devices.

1.3 Storing the Documentation

Store all manuals for the Sunny Boy in such a way that they may be accessed at any time.

1.4 Additional Information

Additional information on specific topics can be found in the download area at www.SMAAmerica.com.

1.5 Nomenclature

In this document, SMA America Production, LLC and SMA Solar Technology Canada Inc. will be referred to as SMA.

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Safety

SMA America, LLC

2 Safety

2.1 Intended Use

TheSunnyBoy isa PVinverterwhichconvertstheDCcurrentofthePVarraytoACcurrentand feeds it into the power distribution grid. The Sunny Boy is suitable for use with fuel cells, small wind turbine systems, and other DC current sources. The Sunny Boy takes the current from a DC source and converts it into AC power for the power distribution grid. This power is then supplied to the local consumers (C). Surplus energy is fed into the power distribution grid (E). Due to the power that is consumed by the local devices, the amount of power required from the power distribution grid is reduced. Anenergy surplus may evenresult in theenergy meter (D) of your plant running backward. This power may also be recorded as power credits by the electric utility company depending on the interconnection agreement.

Principle of a PV Plant with a Sunny Boy

Position Description

APV array

B Sunny Boy with DC disconnect

C Local consumers

DEnergy meter

EPower distribution grid

Ground Fault Detection and Interruption in the PV Array

All Sunny Boy inverters have a system for detecting ground fault errors in the PV array (GFDI) according to the National Electrical Code® 690.5.

The PV array is operated in a grounded configuration. Depending on the plant type, the negative or positiveconductor ofthePVarrayisconnected tothegroundingsystemin theSunny Boy.According to UL 1741, the GFDI protection is always active when sufficient DC voltage is present to switch on the LC display in the Sunny Boy.

If a ground fault current larger than 1 A is flowing, the Sunny Boy switches off and displays the interference. After the ground fault has been located and eliminated, the ground fault interference must be cleared manually. Following this, the Sunny Boy resumes operation.

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Installation Manual

SMA America, LLC

Safety

Arc Fault Circuit Interrupter AFCI

Only the following Sunny Boy types are equipped with an automatic arc fault circuit interrupter (AFCI):

•SB 5000US-12

•SB 6000US-12

•SB 7000US-12

•SB 8000US-12

Edition 2011 of the National Electrical Code®, Section 690.11, requires that all PV plants attached toabuildingarefittedwithameansofdetectingandinterruptingserialelectricarcs(AFCI)onthePV side.

Anelectricarcwithapowerof300 WorgreatermustbeinterruptedbytheAFCIinthetimespecified by UL 1699B. A triggered AFCI may only be reset manually.

The arc fault circuit interrupter (AFCI) can be deactivated in the "Electrically qualified person" mode via the communication device if this function is not desired.

Anti-Islanding Protection

Astand-alonegridisastatus.ItoccurswhenthepowerdistributiongridisswitchedoffandtheSunny Boy is in operation. For this to happen, the remaining load must be resonant at 60 Hz and exactly matchthepoweroftheSunnyBoy.Althoughtheappearanceoftheseconditionsisextremelyunlikely, the Sunny Boy has an active safety algorithm to protect against islanding. The effect of this is that, in the event of the power distribution grid being switched off, the PV plant does not supply any power to a symmetrical load that is resonant at 60 Hz. In addition, the Sunny Boy regularly feeds leading and lagging reactive currents into the power distribution grid. This procedure is checked by the certification body in order to destabilize and switch off a stand-alone grid status.

Operating Temperature

The Sunny Boy delivers full performance in ambient temperatures up to +113 °F (+45 °C). Due to the fan cooling, this level of performance can be achieved in closed rooms. The Sunny Boy does remainoperationalabove+113 °F(+45 °C),butitreducesthelevelofperformancesoastoprotect the internal component parts from overheating.

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Safety

SMA America, LLC

Interconnection Code Compliance

The Sunny Boy has been checked by the certification body and certified according to the guidelines in UL 1741 Static Inverters and Charge Controllers for use in Photovoltaic Power Systems, IEEE 9292000 Recommended Practice for Utility Interface of Photovoltaic Systems, and IEEE 1547 Standard for Interconnecting Distributed Resources with Electric Power Systems.

UL 1741 is the standard that is used for the Sunny Boy by the certification body in order to certify that it complies with the regulations in National Electrical Code® and IEEE 929-2000. IEEE 929-2000 states recommendations regarding the appropriate equipmentandfunctionalitythatisrequiredtoguaranteefault-freeoperationwhenthe

power generation is connected to the power distribution grid.

The Sunny Boy is also certified according to Canadian Electrical Code® CSA C22.2 N0. 107.1-01 (General Use Power Supplies).

Prior to setting up and installing your PV plant, contact the on site grid operator or the responsible authority.

2.2 Safety Instructions

DANGER

High voltages in the inverter

Electric shock when touching live components.

•Priortoperforminganyworkontheinverter,disconnecttheinverterfromanyvoltage sources.

•Only connect the inverters as described in this manual.

•Only electrically qualified persons may work on the inverter.

CAUTION

The inverter can become hot during operation

•Burn injuries may be possible when touching the enclosure.

•During operation, touch the enclosure lid only.

The Sunny Boy may down over due to inappropriate transport

Contusions or bone fractures due to the heavy weight of the Sunny Boy.

•Prior to transporting the Sunny Boy, take its weight of 148 lb. (67 kg) into consideration.

•Use suitable lifting techniques for the transport.

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Safety

2.3 Installation Overview

This section provides a brief overview of the installation process of a Sunny Boy.

Section 3: Unpacking and Inspection

This section provides instructions and information on unpacking the Sunny Boy and inspecting shipping damage.

Section 4: AC Voltage Configuration

This section contains information on removing the cover, determining the position of the fundamental component parts in the inverter and selecting the suitable voltage configuration for the installation.

Section 5: Mounting

Thissectionprovidesguidelinestohelpyouchoosethebestmountinglocation, recommendationsfor achievingoptimalperformance,safetymeasuresandwarningstopreventinjuriesand/ordamageto the device, and step-by-step instructions for mounting the Sunny Boy inverter.

Section 6: Wiring the Sunny Boy

This section contains guidelines for selecting the correct line cross-section, safety measures and warningstopreventinjuriesand/ordamagetothedevice,andstep-by-stepinstructionsforconnecting the Sunny Boy to a PV array, to an electric circuit in the home, and to the power distribution grid. Procedures are also included for connecting optional data communication cables.

Section 7: Commissioning

Commissioning comprises applying DC input power to the Sunny Boy, observing the LED and LCD displays, and resolving any problems that occur.

Section 8: Displays and Messages

Thissectionprovidesinformationonmessagesthatmayappearduringcommissioningandoperation.

Section 9: Troubleshooting

Thissectionprovidesinformationfortroubleshootingandproceduresforresolvingproblemsthatmay occur during commissioning and operation.

Section 10: Maintenance

This section contains the maintenance and cleaning of the Sunny Boy and safety measures and warnings for preventing injuries and damage to the device.

Section 11: Technical Data

This section contains the technical data of the Sunny Boy, connection diagrams, and the correct tightening torques for connecting the cables and screws to the Sunny Boy.

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Unpacking and Inspection

SMA America, LLC

3 Unpacking and Inspection

Check the delivery for completeness and any visible external damage. Contact your SMA specialty retailer or SMA if the delivery is incomplete or you find any damage.

If it is necessary to send the Sunny Boy back, use the original packaging. Contact information is provided in the "Contact" section, page 103.

3.1 Scope of Delivery

Position	Quantity	Description
A	1	Sunny Boy
B	1	Wall mounting bracket
C	1	Replacement screw and replacement conical spring washers for connecting
		the enclosure lid to the Sunny Boy.
	2	ScrewsandwashersforfasteningtheSunnyBoytothewallmountingbracket
D	2	Spare jumpers for fan test
E	2	Handle covers (left and right)
F	3	DC varistors*
G	1	Insertion tool for DC varistors*
H	1	DC Disconnect
I	1	Screw and washer for closing the DC Disconnect lid
	2	Screws and washers for fastening the DC Disconnect to the wall-mounting
		bracket

* only SB 5000US-12/SB 6000US-12/SB 7000US-12/SB 8000US-12

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AC Voltage Configuration

4 AC Voltage Configuration

4.1 Opening the Sunny Boy

1.Remove the six screws and conical spring washers from the enclosure cover. Pull the cover forward smoothly.

2.Putthecover,screws,andconicalspringwasherstoonesidesothattheydonotgetintheway.

NOTICE

Ingress of moisture when mounting and installing the Sunny Boy

Potential damage to the Sunny Boy.

•Forconduithubs,useULlistedraintight,wetlocationhubsforentryintotheenclosure.

•Do not open the Sunny Boy in the event of rain or a high level of humidity (> 95 %).

Damage to the seal of the enclosure lid during frost

When opening the Sunny Boy during frost, the seal of the enclosure lid can be damaged. There may be an ingress of moisture damaging the Sunny Boy.

• DonotopentheSunnyBoywhentheoutdoortemperatureisbelow23 °F( − 5 °C).

Electrostatic discharges through touching component parts Potential damage to the Sunny Boy.

• Ground yourself before touching any electronic component.

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AC Voltage Configuration SMA America, LLC

4.2 Locating Internal Component Parts

A B C D

R
2	3	5	7	A B + -
				V		8V	7V	E
				240	V	8V	7V
				240	0	20	27

Q

P O

COMBINED	GROUNDING
N	ELECTRODE
N	CONDUCTOR

M	1	2	3	4
	UNGROUNDED				GROUNDED	L1	L2	N

H G F

	L

Position	Description
A	Sockets for optional communication Piggy-Back (RS485 or wireless)
B	Display
C	Status LEDs
D	Jumpers for configuring the AC voltage and the fan test
E	Terminal blocks for configuring the AC voltage
F	Ground terminal (PE)

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Installation Manual

SMA America, LLC AC Voltage Configuration

Position	Description
G	Output AC conductor terminals (N, L1, and L2)
H	Connecting terminal plate, PV grounding conductor, + DC grounding conductor
I	DC varistor terminal with DC varistors*
K	Output AC conductor terminals (L1, L2, N and PE)
L	Terminal PV GROUNDED (PV array input)
M	Terminal PV UNGROUNDED (PV array input)
N	Combined terminal UNGROUNDED
O	Terminal DC − (PV array input)
P	Terminal DC+ (PV array input)
Q	Flat male tab for grounding the cable shield for communication
R	Terminal for optional communication (RS485)

* only SB 5000US-12/SB 6000US-12/SB 7000US-12/SB 8000US-12

4.3 AC Voltage Configuration

The Sunny Boy 8000-US must not be connected to a 208 V grid.

The Sunny Boy is compatible with the following grid types:

•208 VAC (not Sunny Boy 8000-US)

•240 VAC

•277 VAC

The Sunny Boy is configured ex works for connection to the power distribution grid with a voltage of 240 V AC. The Sunny Boy can be configured for other voltages.

4 cables are inserted into the enclosure via a cable support sleeve. Each cable is labeled with its respective voltage.

1. Connect the cable with the correct voltage to the left terminal block (A).

2. To adjust the AC voltage, select the cable with the correct voltage at the right terminal block (C). Connecttheselectedcabletotheleftsideoftheleft terminal block (A).

3. Secure all screw terminals. If spring-type terminals are available, close the levers of the terminals by pressing down.

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AC Voltage Configuration SMA America, LLC

Tightening torque of the screw terminals for the left terminal block:

Gray terminal blocks (Weidmüller)	18 in-lb. (2 Nm)
Green terminal blocks (Phoenix)	22 in-lb. (2.5 Nm)

Do not remove the cable in the left terminal block with the marking 0 V (B).

This always remains connected to the right side of the left terminal block.

4.Connectandfastenallcablesnotbeingused totherightterminalblock(C).Tighteningtorques of the screw terminals for the right terminal block (cables not being used):

	Gray terminal blocks (Weidmüller)	11 in-lb. (1.2 Nm)
	Green terminal blocks (Phoenix)	15 in-lb. (1.7 Nm)
	If the Sunny Boy is configured for the wrong
	input voltage, this error message appears in
	input voltage, this error message appears in
	the display:

• Check if the configuration of the AC voltage is correct.

Automatic Grid Voltage Detection

The Sunny Boy automatically detects the grid voltage that it must feed in. Depending on the voltage and the phase angle between L1N and L2N, the inverter determines whether it is connected to a 208 V,240 V,or277 Vgrid.IftheSunnyBoyisconfiguredforthewronggridvoltage(forexample, the inverter was configured for 240 V and then connected to a 208 V grid), the Sunny Boy displays an error message.

The table below contains the limiting values for voltage and frequency in the AC terminal:

Voltage range for 208 V nominal value, phase-phase (not Sunny		183 V … 229 V
Boy 8000-US)
Voltage range for 240	V nominal value, phase-phase	211 V … 264 V
Voltage range for 277	V nominal value, phase-neutral conductor	244 V … 305 V
Frequency range		59.3 Hz … 60.5 Hz

If the power distribution grid uses a neutral conductor, the responsible authority can demand that a neutral conductor be connected to the inverter.

To set the configuration jumpers, observe the procedure in 4.4 ”Jumper for System Configuration” (page24).

To connect a neutral conductor to the Sunny Boy, observe section 6.5.2 ”AC Connection in the DC Disconnect” (page 43) or section "AC Connection in the DC Disconnect" on page 43.

Configuration of Grid Voltage

The figure on the next page illustrates common grid forms. Note that it is not the phase relationship that is important when connecting the Sunny Boy to the power distribution grid, but the voltage compatibility.

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AC Voltage Configuration

*The Sunny Boy 8000-US must not be connected to a 208 V grid.

When using grounded 240 V or 208 V Delta grids:

• Connect terminal L2 to the grounded phase.

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AC Voltage Configuration

SMA America, LLC

4.4 Jumper for System Configuration

By setting the jumper, you configure the Sunny Boy for different grid topologies. This means that operation in system configurations without neutral conductors, such as 208 V and 240 V Delta, is possible. The following figure provides an overview of the standard settings, the settings for grids without neutral conductors, and the settings for the fan test.

In the event of frost, the fan cannot be inspected

The fans are not activated under 32 °F (0 °C).

208V with neutral conductor*240 V with neutral conductor or 277 V

208 V Delta, without neutral conductor or * 208 V Delta, grounded *

240 V Delta, without neutral conductor or 240 V Delta, grounded

Fan test

* The Sunny Boy 8000-US must not be connected to a 208 V grid.

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AC Voltage Configuration

The following figures display the correct arrangement of the jumpers for the 240 V Delta system configuration: Note the order in which the inverters are connected to the phases.

Configuration Examples for Jumpers with 240 V Delta, 120 V Stinger

Configuration Examples for Jumpers with 240 V Delta, Grounded

Inverter 3

Jumpers Settings

L2 L1

Jumpers

Inverter

L1 2

Settings

Inverter	1	Settings
Jumpers

When using grounded 240 V or 208 V Delta grids

• Connect terminal L2 to the grounded phase.

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Assembly

SMA America, LLC

5 Assembly

5.1 Safety

DANGER

Danger to life due to fire or explosions.

With electrical devices, there is always a certain danger that a fire may break out.

•Do not install the inverter in the vicinity of combustible materials.

•Do not install the inverter in potentially explosive areas.

CAUTION

The Sunny Boy may fall down due to inappropriate mounting Contusions or bone fractures due to the heavy weight of the Sunny Boy.

•WhenmountingtheSunnyBoy,takeitsweightof148 lb.(67 kg)intoconsideration.

•Use appropriate mounting material for the mounting location of the inverter:

–For mounting on plasterboard, do not use hollow wall anchors or toggle bolts.

–Wooden supporting posts must be present behind the installation points on plasterboard.

•Use suitable lifting technique when mounting.

The inverter can become hot during operation

Burn injuries may be possible when touching the enclosure.

• Install the inverter in such a way that it cannot be touched accidentally.

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Assembly

5.2 Requirements for the Mounting Location

Observe the following conditions during installation:

•The installation method and mounting location must be suitable for the weight and dimensions of the Sunny Boy (see section 11 ”Technical Data” (page 91)).

•Note the dimensions of the DC disconnect (Page 34).

•Mount the inverter on a stable surface.

•The mounting location must be accessible at all times.

max. 45°

•Mount vertically or tilted backward at max. 45°.

•The connection area must point downward.

•Do not install the inverter tilting forward.

•Do not install the inverter horizontally.

•Install the inverter at eye level in order to be able to read out the operating state at any time.

•The ambient temperature must be below +113 °F (+45 °C).

•Do not expose the inverter to direct sunlight.

•In the living area, do not install inverters on a

plasterboard wall or similar wall.

The Sunny Boy may emit noises when in use which can be regarded as a nuisance.

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Assembly

SMA America, LLC

•Observerecommendedclearancestothewallsaswellastootherinvertersorobjects.Thus,you will prevent the inverter's power output from being reduced due to excessive temperatures.

The National Electrical Code® may stipulate greater clearances (see National Electrical Code®, Section 110.26). Installations in Canada must be carried out in accordance with the applicable Canadian standards.

•If several inverters are mounted in areas with high ambient temperatures, increase the clearances and ensure a sufficient fresh-air supply. Thus, you will prevent the inverter power from being reduced due to too high temperatures.

Recommended clearances

Position	Clearance				in
Top	12 in. (300 mm)				in
					.
Bottom	36 in. (900 mm)				12
Left	12 in. (300 mm)
Right	12 in. (300 mm)	12
Front	2 in. (50 mm)	12	in.
Front	2 in. (50 mm)		in.
			2	in	.
				in

. in

If the Sunny Boy is installed outdoors

• Observe minimum clearance to the ground of 36 in. (900 mm).

12	in.

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Assembly

Dimensions of the Sunny Boy

5.3 Mounting with Wall Mounting Bracket

The Sunny Boy is supplied with a T-shaped wall mounting bracket that is suitable for most walls. The wallmustbeverticalandstableenoughtocarryaweightof145 lb.(67 kg)foralongperiodoftime. For the wall material, use suitable fastening elements no smaller than ¼in.

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Assembly

SMA America, LLC

Dimensions of the Wall Mounting Bracket

2 in.	2 in.	2 in.	2 in.	2 in.	2 in.	2 in.	2 in.
50 mm	50 mm	50 mm	50 mm	50 mm	50 mm	50 mm	50 mm
3in.(74mm)

in.(584mm)	11in.(280mm)
23

(80 mm)

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+ 74 hidden pages