Xantrex Technology GT 2.5-DE, GT 3.8-DE, GT 2.8-SP, GT 3.8-SP User Manual

Xantrex Grid Tie Solar Inverter

GT 2.5-DE
GT 3.8-DE
GT 2.8-SP
GT 3.8-SP

Owner’s Manual

Xantrex Grid Tie Solar Inverter

Owner’s Manual

About Xantrex

Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from
50 watt mobile units to one MW utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup
power applications in both grid-connected and stand-alone systems. Xantrex products include inverters, battery
chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute
electrical power.

Trademarks

Xantrex Grid Tie Solar Inverter is a trademark of Xantrex International. Xantrex and Xanbus are registered
trademarks of Xantrex International.

Other trademarks, registered trademarks, and product names are the property of their respective owners and are used
herein for identification purposes only.

Noti ce of Copyrig ht

Xantrex Grid Tie Solar Inverter Owner’s Manual © August 2005 Xantrex International. All rights reserved.

Disclaimer

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY

TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT,

INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH
INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.

Date and Revision

August 2005 Revision A

Pa rt Number

975-0253-01-01

Contact Information

Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.xantrex.com

About This Manual

The purpose of this Owner’s M anual is to provide explanations and procedures for
installing, operating, maintaining, and troubleshooting the Xantrex Grid Tie Solar
Inverter™.

Scope

The manual provides safety guideline s, detailed planning and setup informa tion. It
provides procedures for installing the inverter and information about operating
and troubleshooting the unit. It does not provide details about particular brands of
photovoltaic (PV) panels. Y ou need to consult individual PV manufacturers for
this information.

Audience

The manual is intended for anyone who needs to install and operate the GT
Inverter. Installers should be fully educated on the hazards of installing electrical
equipment. Certified electricians or technicians are recommended.

Organization

This manual is organized into 6 chapters and an appendix.
Chapter 1, “Introduction”, contains information about the features and functions

of the Xantrex Grid Tie Solar Inverter.
Chapter 2, “Installation”, provides information about planning for and installing

the GT Inverter. It contains information to help you plan wire routes, ensure your
PV array provides necessary power , and find a suitable location for installation.

Chapter 3, “Wiring the Inverter”, provides procedures for making DC and AC
wiring connections for single and multiple inverter installations. This chapter also
includes information about communications wiring and using GT-View
monitoring software.

Chapter 4, “Star ting the Inver ter”, contains information on starting up the Xa ntrex
Grid Tie Solar Inverter and performing a functional test.

Chapter 5, “M onitoring the Inverter”, contains information for understanding the
LCD s creens and the LED indicators.

Cha pter 6, “M ain tena nc e and T roubleshooting”, contains inform a tion ab out how to
provide gener al main tena nce fo r the Xan trex Grid Tie Solar Inverter . It also
provide s inform a tion ab out tr ouble sh ootin g the unit.

Appendix A, “Specifications”, contains information about the ele ctrical and
environmental specifications of the Xantrex Grid Tie Solar Inverter.

975-0253-01-01 iii

About This Manual

Conventions Used

The following conventions are used in this guide.

WARNING

Warnings identify conditions that could result in personal injury or loss of life.

CAUTION

Cautions identify conditions or practices that could result in damage to the unit or other
equipment.

Important:

serious as a caution or warning.

Abbreviations Used

GT Grid Tie
LCD Liquid Crystal Display
LED Light Emitting Diode
MPPT Maximum Power Point Tracking
P

MAX

P

NOM

PC Personal Computer
PV Photovoltaic
STC Standard Test Condition
Vac Volts AC
Vdc Volts DC
V

MP

V

OC

These notes describe things that are important for you to know, but not as

Maximum Output Power
Nominal Output Power

Voltage at Maximum Power
Open Circuit Voltage

V

SC

U

PV

iv 975-0253-01-01

Short Circuit V ol tage
PV Array DC Voltage

Symb ols Used

About This Manual







Relat ed Informat ion

You can find more inf ormation about Xantrex Technology Inc. as well as its
products and services at www.xantrex.com

Alternating Current (AC)
Direct Current (DC)

In this guide: Important information, warnings, or cautions.
On the product: Important information, warnings or cautions with further
explanation in the product guide.

Caution, risk of electric shock.

FOR AUTHORIZED SERVICE PERSONNEL: Before opening cover,
disconnect DC and AC power and wait 30 minutes to allow internal voltages
to reach safe levels.
NOTE: there are no user-serviceable parts inside.

Refer to the operating instructions.

975-0253-01-01 v

vi

Important Safety Instructions

SAVE THESE INSTRUCTIONS—This manual contains important instructions that shall be f ollowed
during the installation and maintenance of the Xantrex Grid Tie Solar Inverter.

1. Before installing and using the G T Inverter, read all instructions and cautionary markings on the
inverter and in all appropriate sections of this guide.

2. To reduce risk of fire hazard, do not cover or obstruct the heat sink.

3. Observe the clearance recommendations as described on page 2–12. Do not install the GT Inverter in a
zero-clearance or non-ventilated compartment. Overheating may result.

4. Use only accessories recommended or sold by the manufacturer . Doing otherwise may result in a risk
of fire, electric shock, or injury to persons.

5. To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition and that
wire is not unders ized. Do not operate the G T Inverter with damaged or substandard wiring.

6. Do not operate the GT Inverter if it has received a sharp blow, been dropped, or otherwise damaged in
any way . If the GT Inverter is damaged, see the Warranty section.

7. D o n ot d isassemble the GT Inverter. It contains no u se r -s er v iceab l e parts. See War ra nty for instr uct i on s
on obtaining service. Attempting to service the GT Inverter yourself may result in a risk of electrical
shock or fire and will void the factory warranty.

8. To reduce the risk of elec trical shock, disconnect both AC a nd DC power from the GT Inverter before
attempting any maintena nce or cleaning or working on any circuits connected to the inverter. Turning
off controls will not reduce this risk. Internal capacitors remain charged for up to 30 minutes after
disconnecting all source s of power.

9. The GT Inverter must be provided with an equipment-grounding conductor connect ed to the AC
ground.

975-0253-01-01 vii

Safety

Regulatory Compliance

The GT Inverter is CE Marked for the following Directives and standards:

• Low Voltage Directive 73/23/E EC, per EN50178 “Electronic Equipment for Use in Power
Installations”.

• EMC Directive 89/336/EEC, per:

• EN61000-6-3 “Emission Standard for Residential, Commercial, and Light-Industrial

Environments”

• EN61000-6-1 “Immunity for Residential, Commercial, and Light-Industrial Environments”

• EN61000-3-2 “Limits for Harmonic Current Emissions”

• EN61000-3-3 “Limitations of Voltage Fluctuations and Flicker”.

The GT Inverter is designed for utility interactive operation. It has complete on-board over-current, over­temperature and anti-islanding protection. It monitors voltage and frequency of the utility grid and
automatically stops supplying power whenever conditions on the utility grid deviate from standard levels
(see Specifications) .

The GT Inverter is equipped with a high frequency transformer that assures galvanic isolation between the
DC side and the utility power grid.

German models have an integrated ENS and comply with the VDE 0126 regulations for supplementary
grid connection, especially to the “regulation for the supplementary grid feeding with photovoltaic
electricity producing facilities to the low voltage power supply grid” issued by the VDEW.

Spanish models comply with Royal Decree 1663/2000, dated on September 29, regarding the connection
of photovoltaic installations to the low tension network.

viii 975-0253-01-01

Contents

Important Safety Instructions

Regulatory Compliance viii

1

Introduction

About the Xa ntr ex Grid Tie Solar Inverter- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2

Standard Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3

2

Installation

Installation Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Single Inverter Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2
Multiple Inverter Installat ions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Plann in g the Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Invert e r Loc a t io n - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
PV Array R equirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Grounding Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–7
Routing the Wires - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8

Prepa rin g fo r t he Inst a ll a ti on - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9

Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9
AC Circuit Breaker Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9
AC and DC Disc on n e c ts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9

Mounting the Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10
Tools and Materials Needed - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11
Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11
Installing the Mounting Bracket - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12
Mounting the Inverter on the Bracket - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–16

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -vii

3

Wiring the Invert er

Connec t in g t h e DC Wiri n g - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Equipment Needed - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Connecting the PV Array - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3

Connec t in g t h e AC Wiri n g - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5

Making AC Connections Using Quick C onnects - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5
Connecting Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3 –7
Communications Wiring for Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8

Xanbus Network Technology - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8

Guidelines for Routing the Network Cables - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11

975-0253-01-01 ix

Contents

Connecting Network Cable between Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3–12
Communications Wiring for Monitoring a Single Inverter - - - - - - - - - - - - - - - - - - - - - - - -3–12

4

Starting the Inverter

Commissioning Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2
Disconnect Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3

5

Monito ring the Inverter

Monitoring the Front Panel Display- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2
Front Panel Display Screens and What They Mean - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3

Startup Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3
Normal Operation Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3
Offline Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5
Fault Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7
Special Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8
Custom Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–9

Status Indicator Lights- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5–10

6

Maintenance and Troubleshoo ting

Factors Affecting GT Inverter Performance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–2

PV Array Factors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–2

Other Factors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3
Perf o rmin g G ene ra l Ma in te n a n ce - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6– 3
Identifying Error/Fault Conditions and Solutions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

A

Specifications

Electrical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

Input - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

Adjustable Disconnect Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3

Efficiency - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5
Environmental Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–6

User Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–6
Mechanical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–6

Warranty and Return Information
Index

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IX–1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WA–1

x 975-0253-01-01

Figures

Figure 1-1 Basic System Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Figure 1-2 Main Fe atures of t he GT In ve rt e r- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Figure 2-1 Installation Options Overview- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3
Figure 2-2 GT Inv e rte r m ou n tin g ori e n ta ti o n - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2– 5
Figure 2-3 Installation Overview- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10
Figure 2-4 GT Inverter Dimensions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11
Figure 2-5 M ounting Bracket and GT Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12
Figure 2-6 E xamples of Mounting on a Pole or Rails - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–14
Figure 2-7 Installing the Mounting Bracket using Plywood Support - - - - - - - - - - - - - - - - - - - - - 2–15
Figure 2-8 Proper Placement of the Inverte r on the Mounting Bracket - - - - - - - - - - - - - - - - - - - 2–16
Figure 3-1 PV Quick Connect Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Figure 3-2 DC Connections for a Two-String PV Array - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Figure 3-3 AC Connector (female) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–6
Figure 3-4 AC Connector Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–6
Figure 3-5 Improper multiple inv e rte r connecti on s- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3– 7
Figure 3-6 Daisy Chain Layout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8
Figure 3-7 Male Netw o rk Te rminator - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3– 9
Figure 3-8 Location of Xa nbus RJ45 Ports - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9
Figure 3-9 RJ45 Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–10
Figure 3-10 Replacing the Comm Port Cover - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–12
Figure 3-11 GT-View Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13
Figure 3-12 GT-View Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14
Figure 5-1 Front Panel LCD Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2
Figure 5-2 L ocation of Status Indicator Lights - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10
Figure A-1 Output Power vs. Ambient Temperature - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -A–4
Figure A- 2 Typica l Eff i ci enc y- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -A –5

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Tables

Table 2-1 MPPT Operational Window - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Table 2-2 Inverter Clearance Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12
Table 3-1 T568A Standard Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–10
Table 3-2 Network Components and Part Numbers- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11
Table 5-1 Startup Screens on GT Inverter Front Panel Display - - - - - - - - - - - - - - - - - - - - - - - - - 5–3
Table 5-2 N o rma l Opera t io n D e fault Scr een - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4
Table 5-3 N orm a l Ope ra t io n Sc reens for A ll G T Inver ters - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4
Table 5-4 Additional Normal Operation Screens for Each GT Inverter in a Multiple Unit System - 5–5
Table 5-5 Offline Mode Default Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5
Table 5-6 O ffline Mode Sc re ens fo r Al l GT Inverter s - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6
Table 5-7 Additional Offline Mode Screens for Each GT Inverter in a Multiple Unit System - - - - 5–6
Table 5-8 Fault Message Screens- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7
Table 5-9 Additional Fault Mode Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8
Table 5-10 Special Message Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8
Table 5-11 Status Indicator LEDs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10
Table 6-1 Troubleshooting the GT Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

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1

Introduction

Chapter 1, “Introduction”, contains information about the features
and functions of the Xantrex Grid Tie Solar Inverter.

Introduction

Abou t the Xa ntrex Grid Ti e S ol a r I nv e rter

The Xantrex Grid Tie Solar Inverter (GT Inverter) is de signed to convert solar
electric (photovoltaic or PV) power into utility-grade electricity that can be used
by the home or sold to the local power company.

Installing the GT Inverter consists of mounting it to the wall and c onnec ting the
DC input to a PV array and the AC output to the utility. See Figure 1-1 for a
simple diagram of a typical installatio n.

In order to operate, the GT Inverter mus t have gr id power a vailable and connected.
It will not provide backup power if the AC grid fails.

Photovoltaic (PV) Panels—

Ph otovoltaic (PV )

PV Array

Panel s – PV Ar ray

Harvested solar

energy

Harvested solar energy

DC converted to

DC converted to AC

Grid Tie Solar Inverter

Xantrex GT Inverter

X a ntrex G T Inve rter

Figure 1-1 Basic System Overview

AC

Main Utility

M ain Utility

Service Panel

Service Panel

Surplus power route d

Utility

to Utility Grid

Meter

Utility Meter

Surplus power routed to

Power routed to loads

Utility Grid

Utility Grid

Utili ty Gri d

Loads

1–2 975-0253-01-01

About the Xantrex Grid Tie Solar Inve rter

PV compatibility The G T Inverter is des igned to take a dvantage of solar modules configur ed as high

voltage PV string arrays—single crystalline, poly crystalline, or thin film—with a
195 to 550 Vdc input voltage Maximum Power Point range.

Maximum Power Point Tracking (MPPT)

The GT Inverter uses Xantrex proprietary Maximum Power Point Tracking
(MPPT) technology to harvest the maximum amount of ene rgy from the solar
array. MPPT learns your array’s specific characteristics, maximizing its output at
all times.

High efficiency The high-frequency, solid-state design of the GT Inverter is extremely efficient—

up to 95%.

Expandable Multiple GT Inverters may be networked together for increased net metering

capacity or future system growth.

®

Communications protocol

The GT Inverter uses the Xanbus
communicate with multiple units connected within the system. For more

communications protocol, enabling it to

information, see “Xanbus Network Technology” on page 3–8.

Sta ndar d F eat u res

The GT Inverter has the following standard features:

• Sealed inverter (IP54) and external heat sink to pr otect power electronic
components

• Quick-connect AC and DC connections

• Liquid Crystal Display (LCD) to provide easy-to-read system status and daily
cumulative energy production information

• Two LED indicator lights to provide status and ground fault indication.

Heat sink

LCD

LED indicator lights

DC and AC quick-connects
Communication ports cover

Mounting slots (five in total)

Figure 1-2

975-0253-01-01 1–3

Main Features of the GT Inverter

1–4

2

Installati on

Chapter 2, “Installation”, provides information about planning for and
installing the GT Inverter. It contains information to help you plan
wire routes, ensure your PV array provides necessary power, and find
a suitable location for installation.

The topics in this chapter are organized as follows:

• “Installation Options” on page 2–2

• “Planning the Installation” on page 2–2

• “Preparing for the Installation” on page 2–9

• “Mounting the Inverter” on page 2–10.

Installation

Installation Options

The GT Inverter may be ins talled as a single inverter for a single PV array of one
or two PV strings, or in a multiple inverter conf iguratio n for multiple PV arrays
(see Figure 2-1 for diagrams of both options).

Single I nve rter Inst all ation

In this configuration, a single inverter collects the harvested solar energy and
routes the power to the main utility service panel and the utility grid.

Mult iple Inver t er Ins ta lla ti o n s

If multiple inverters are used, each inverter must be wired to an independent PV
array. In this configuration, each inver ter collects the harvested solar energy from
a separate PV array and routes the power to the main utility service panel and the
utility grid.

Communications between inverters is optional, but can be ena bled by installing
communications cabling to t he inverter RJ45 ports. See “Connecting Network
Cable between Inverters” on page 3–12.

Planning the Installation

The following issues need to be considered when planning for an installation
using the GT Inverter. See the specified sections for more information.

• “Inverter Location” on page 2–4

• “PV Array Requirements” on page 2–5

• “Grounding Requirements” on page 2–7

• “Routing the Wire s ” on page 2–8.
Ensure that you have obtained all permits required by local authorities or utilities

before commencing installa tion.

2–2 975-0253-01-01

Utility Grid

Photovoltaic Panels - PV Array

PV String #1

Harvested solar energy

Single Inverter Installation

Xant rex

GT I nv ert er

DC converted
to AC

Main Utility Ser v ic e

Panel

Planning the Installati on

Surplus power routed

Utility

to Utility Grid

Meter

Utility Grid

Surpl us power routed to

Utility Meter

Util it y Grid

Loads

PV String #2

Photovoltaic (PV) Panels—
PV Array

PV Array #2

PV Ar ray #1

Harvested sol ar

ene rgy

Photovoltaic Panels:

Multiple PV Arrays

Photovoltaic Panels—
Multiple PV Arrays

Harvested sol ar energy

Harvested
solar energy

GT Inverter #1 GT Inverter #2

PV Array #1

PV Arr ay #2

Harvested sol ar energy

Harvested solar energy

Xa ntrex GT Inverte rs

Grid T ie Solar Inverter

GT Inverter #1

DC convert ed

Grid Tie Solar In verter

to A C

Xantrex GT Inverter

Multiple Inverter Installation

DC converted
to AC

DC convert ed

to A C

Grid Tie Solar Inverter

GT Inverter #2

DC converted to AC

DC converted to AC

Main Utility
Service Panel

Ma in U tility S e r vic e

Panel

Power routed t o loads

Main Utility
Service Panel

Power routed t o loads

Surplus power routed

Utility

to Utility Grid

Meter

Surplus power routed to

Utility Meter

Utility Grid

Utility Grid

Utility Grid

Loads

Figure 2-1

Installation Options Overview

975-0253-01-01 2–3

Installation

Inverter Location

WARNING: Burn hazard

Do not install in a location where people can accidentally come into contact with the front
of the inverter. High temperatures can be present on the face of the inverter, causing a
potential burn hazard.

In extreme conditions, the GT Inverter chassis can reach temperatures that can cause skin
burns if accidentally touched. Ensure that the GT Inverter is located away from normal
traffic areas.

Inverter failure due to improper installation w ill void the inverter warr anty.
Consider the following when determining where to install the inverter.

Fire Safety

Indoor/
Outdoor

Orientation

Temperature

Ground
Clearance

Distance

• Do not install anywhere near combustible or flammable materials such
as wooden cabinets and furniture, or stored fuels and solvents.

• The GT Inverter can be mounted indoors or outdoors. When installed
outdoors, the GT Inverter must be mounted in a vertical orientation.

• In outdoor installations the GT Inverter should be located away from
lawn sprinklers and other sources of spray.

• The GT Inverter must be mounted vertically (with DC and AC
connectors facing down) on a wall or pole. See Figure 2-2.

• Ensure that the GT Inverter is mounted in a location where the
ambient temperature range is -25 to 65 °C (-13 to 149 °F).

• At extreme hot or cold temperatures, the front panel LCD may not
function normally. At higher temperatures, the unit may derate power .
See “Environmental Specifications” on page A–6 and “Output Power
vs. Ambient Temperature” on page A–4.

• Outdoors, the GT Inverter requires at least 100 cm (39 inches) of
clearance between the bottom of the unit and the ground. This
clearance helps prevent water from splashing onto the bottom of the
unit.

• Indoors, it is recommended to use the same clearance to ensure
visibility of the LCD.

• To minimize copper losses, ensure that wire lengths between the PV
array and the GT Inverter and between the inverter and the Main
Utility Service Panel are kept to a minimum.

• Maximum distances will depend on wire gauges used and PV array
output voltages.

Debris free

2–4 975-0253-01-01

• Excessive debris (such as dust, leaves, and cobwebs) can accumulate
on the unit, interfering with wiring connections and ventilation. Do
not install in a location where debris can accumulate (such as under a
tree).

Planning the Installati on

Figure 2-2

GT Inverter mounting orientation

PV Array Requirements

WARNING: Shock hazard

Whenever a PV array is exposed to sunlight, a shock hazard exists at the output wires or
exposed terminals. To reduce the risk of shock during installation, cover the array with an
opaque (dark) material before making any connections.

General Recom men dations

It is important that the PV array is installed correc tly to the manufacturer’s
specifications and to local code requirements.

Equipment and Installation Recommendations

Important:

small obstructions such as antennas, chimneys, and power lines. As well, be aware of
potential obstructions from growing trees and neighboring buildings. A small amount of
shade can have a disproportionately high impact on system performance.

The PV array should be free of shade. This requirement includes even

Equipment
recommendations

• All electrical equipment should be approved for the voltage and current
ratings necessary for the application.

• All wiring should be sized correctly to minimize voltage drop.

• All exposed wires or conduits should be sunlight resistant.

• All required overcurrent protections should be included in the system and
acces si bl e f or mai nt en ance.

Installation
recommendations

• All electrical te rmi nations should be fully tightened, secured, and st rain
relieved as appr opriate.

• All mounting equipment should be installed accordi ng to the ma nu fa ct ure r’ s
specifications.

• All wires, conduit, exposed conductors and electrical boxe s should be s ecured
and supported according to code requirements.

975-0253-01-01 2–5

Installation

Voltage and MPPT Requirem ents

MPPT operational
window

Voltage
requirements

The MPPT software maximizes the output ener gy of solar arrays as long as the
operating voltage is within the MPP T operational window. Ensure that the PV
array used in the system operates within the MPPT operational window.

Effects of array voltages outside of the MPPT operational window are shown in
Table 2-1.

T able 2-1

V oltage Effect of Array Voltag e Inverter Mode

< 195 Vdc Operating voltage will be shifted to 195 Vdc;

195 to 550 Vdc Maximum harvest of solar energy MPPT window
550 to 600 Vdc Will not allow maximum harvest of solar

> 600 Will shut down and may cause damage to the

MPPT Operational Window

Low power
the array will not be at its maximum power
point

Power derating
energy

Shutdown
inverter; stops selling surplus energy

The maximum power point volt age of a s tring connected t o the GT Inverter shoul d
be a minimum of 195 Vdc. If it is less than 195 Vdc, the inverter will continue to
operate, but it will regulate the PV voltage to 195 V. Because th e ar r ay w il l not b e
operating at its maximum power point, this may result in lower than expected
energy harvest.

Maximum PV
Power

The solar array should be sized such that its maximum power output does not
exceed the limits of the MPP T operational window (195 to 550 Vdc). See
“Guidelines for Matching PV Array Size to Xantrex Grid Tie Solar Inverter
Input”.

The array voltage should never exceed 600 V

(open circuit voltage) under any

OC

thermal condition.
Likew ise, en sur e t hat the Isc (sh ort circui t curren t) rating of the arr ay at any

temper at ur e d oes no t ex ceed t he sho r t cir cui t cu rren t ra ting of the in ver te r.

2–6 975-0253-01-01

Planning the Installati on

Guidelines for Matching PV Array Size to Xantrex Grid Tie Solar Inverter Input

For determining the number of panels required in the PV string (panels connected
in series), you must ensure that the following three requirements are met:

1. To a void damage to the inverter, ensure that the PV array output will never
exceed 600 Vdc under any conditions.

2. Do not exceed the maximum array short circuit-current rating marked on the
inverter.

3. To achieve maximum energy harvest from your array, ensure that the V
(voltage at maximum power) does not drop below 195 Vdc or increase above

550 Vdc under most conditions.

Guidelines to help you meet these requirements:

• Co nsid er t he ex pect ed V
panel manufacturer provides a V
25 °C (77 °F). Ensure that the V
does not exceed 600 V
panel manufacturer should be able to provide a coefficient of voltage increase

per degree.

• Panel voltage decreases in high temperatures. This will affect the panels’
V

MP

expected temperature to determine the minimum V

Once you know the specifications of your panels, all these factors will help
determine the maximum and minimum number of pa nels that can be used.

Visit the

Grounding Requirements

MP

of the string under all possible conditions. The

OC

rating per panel, but it is usually rated at

OC

rating at the coldest ambient temperature

OC

. Panel voltage increases in cold te mperatures—the

OC

. Again, the manufacturer’s coefficient must be used with the highest

.

MP

Support

page at

www.xantrex.com

to us e an online PV ar r ay sizin g tool.

WARNING: Shock hazard

The GT Inverter must be grounded by connection to a grounded permanent wiring system.

AC Grounding

AC grounding is governed by local codes. Consult the local utility for specific
grounding requirements.

DC Grounding

The GT Inverter is designed to work with ungrounded PV arrays.

975-0253-01-01 2–7

Installation

Lightning Protection

Routing the Wires

Reduce the risk of lightni ng damage by using a single-point grounding sys tem. In
this system, all ground lines terminate at the same point. This point normally is the
main utility ground installed by the utility company to provide a ground for the
house wiring. This ground usually consists of a copper rod driven 1.5 to 2.5
meters (6 to 8 feet) into the earth.

Typical
configurations

Determine all wire routes to and from the G T Inverter. T ypi cal routing
configurations include:

• AC wiring from the GT Inverter to the main utility service panel

• DC input wiring from the PV array to the GT Inverter
All wiring and installation methods should conform to a pplicable electrical and

building codes.
For all installations, local utilities may have addition al requirements .

WARNING: Shock hazard

Check for existing electrical or plumbing prior to drilling holes in the walls.

2–8 975-0253-01-01

Prepar ing for the Installation

Ensure your local utility is consulted for any requirements for connecting to or
returning power to the grid. Obtain all permits neces sar y to compl et e th e
installation. Consult your local and national electrical codes for more information.

Preparing for the Installation

Important:

DC wiring/cabling and wires/cables.

In this manual “wiring” and “wires” are used in reference to both AC and

Wiring

Wire size and length will be determined by the location of each component and
the ir r el ati v e di s t ance t o each other . Wire sizes m ay also be affected by whet her or
not conduit is used.

Important:

Ensure that wiring is not undersized. Undersized wiring can result in significant power
losses and reduction in system efficiency.

Wire size should be based on the maximum power rating of the inverter.

AC Circuit Breaker Requirements

The main utility service panel must dedicate a double pole breaker for each
inverter installed. This breaker must be capable of handling the rated maximum
output voltage and current of the inverter (see “Electrical Specifications” on
page A–2).

AC and DC Disconnects

Depending on the installation, external AC and/or DC disconnects may be
requi r ed, and they m ay ne ed to be in a locat io n easi ly accessible to utility or fire
personnel. Consult local codes and authorities for additional information.

WARNING: Shock hazard

Never connect or disconnect the PV modules from the GT Inverter under load (by pulling
the PV quick connects before disconnecting the grid). Always disconnect the GT Inverter
from the grid first.

975-0253-01-01 2–9

Installation

Mounting the Inverter

Overview

WAR NI NG: Fire, shoc k and ene rgy hazar ds

Before installing the GT Inverter, read all instructions and cautionary markings located in
this manual, on the PV array, and on the main service panel.

General installat ion
steps

Installing of the GT Inverter includes these main steps:

1. Mounting the GT Inverter and installing accessories (this chapter)

2. Making the DC c onnections from the PV ar ray to the GT Inverter
(“Connecting the DC Wiring” on page 3–2)

3. Making the AC connections from the GT Inverter to the main utility service
panel (“Connecting the AC Wi ring” on page 3–5)

Figure 2-3 summarizes these steps.

PV Array

2

600 Vdc
Open Circuit
Maximum

Utility Meter

Utility Grid

3

Phase
Neutral
Protective Earth

1

Grid Tie So lar In verter

Xantrex GT Inverter

Figure 2-3

Installation Overview

Main Utility
Service Panel

2–10 975-0253-01-01

Mounting the Inverter

This chapter describes the first step: mounting the inverter and installing
access ories.

Mounting steps Instructions for mounting the GT Inverter a re described in the following sections:

• “Installing the Mounting Bracket” on page 2–12

• “Mounting the Inverter on the Bracket” on page 2–16.

Tools and Materials Needed

• Assorted screwdrivers, drill, etc.

•Level

• Mounting support material, such as plywood or poles

• Wood screws, anchors for sc rews, depending on mounting surface.

Dimensions

The dimensions of the inverter are shown in Figure 2-4.

40.3 cm

15.9"

14.6 cm

5.7"

52.1 cm

20.5"

59.7 cm

23.5"

Figure 2-4

10.2 cm
4"

GT Inverter Dimensions

55.1 cm

21.7"

Flange and
Mounting Slots

Communication
ports cover

975-0253-01-01 2–11

Installation

Installing the Mounting Bracket

The mounting bracket for the GT Inverter a llows the unit t o be easily mounted and
removed for servicing. It has one hook that matche s a corresponding hook on the
back side of the inverter.

18.3 c m

7.2"

Rectangular slots × 8:
8 mm × 30 mm (5/16" × 1-3/16")

Mounting flanges

23.8 cm

9.4"

Figure 2-5

Mounting Brack et and GT Inverter

Clearance Requi rements

For optimal and safe operation, ensure there is adequate clearance around the
inver ter. The minimum clearance re co mm end at io ns in Tab le2-2 assume a vertical
mount in g. I f clear ances are le ss th an th ese r eco mm end at io ns are use d, add it i on al
power reduction may occur at high ambient temperatures.

T able 2-2

Location Minimum Clearance

Above 30 cm (12 inches)
Below:

• Inverter

• Bracket

In front Suffic ient room to allow for easy acces s to read the displa y and to prev ent

On sides

Mounting slots for securing the inverter

Inverter Clearance Requirements

Outdoors:

• 100 cm (39 inches)

• 130 cm (51 inches)
Indoors: the same clearances are recommended but not required.

accidental contact with hot surface.
Units can be mounted side by side with no clearance between them, but

15 cm (6 inches) of clearance around the outermost two units is
recommended. In hot climates, some clearance between units may be
needed to prevent thermal derating.

2–12 975-0253-01-01

Surfaces for Mounting

Mounting the Inverter

WARNING: Shock hazard

Before drilling holes to mount the GT Inverter, ensure there are no electrical wires or
plumbing in this area.

WARNIN G: Person al injury

The GT Inverter weighs approximately 19 kg (41 lb). Always use proper lifting
techniques during installation to prevent personal injury.

WARNI NG: E xp losion hazard

Do not store combustible or flammable materials anywhere near the inverter.

The GT Inve rter weighs approximately 19 kg (41 lb). The supporting surface must
be strong enough to handle 75 kg (160 lb). If the supporting surface is not strong
enough to handle that w eight, then supporting material such as a sheet of plywood
can be use d to enhance the strength of the mounting surface.

The GT Inverter can be mounted to a vertical surface such as wallboard, wood
siding, concrete wall o r pole assembly.

Mounting on pole s
or rails

Mounting to
wallboard with
support

Mounting to s iding
using wall studs

Mounting to
concrete surface

• See “Mounting on P oles or Ra i ls” on page 2–14. Ensure the bottom of the unit
is a minimum of 100 cm (39 inches) from the ground if mounted outdoors.

• Installation onto wallboard requires either the use of a supporting ma terial
such as plywood o r securing the mounting screws to supporting wall studs.
Use at least two screws and anchors to secure the unit to the supporting
material.

• If mounting to exterior siding using a wa ll stud for support, the plywood
backing will not be needed. Use at least two lag screws to secure the unit to
the supporting material. Ensure the s crews enter the stud a t least 4 cm
(1.5 inches) to adequately support the weight of the unit. After securing the
bracket, the screws or bolts and washers should protrude no more than 6 mm
(1/4 inc h) from th e bracket surf ace.

• If mounti n g the unit o n a concr ete sur face using anchors with n o su pporting
material, use four sc rews and anc hors, instead of t wo, to adequately se cure the
unit and distribute the weight.

Important:

the GT Inverter. It is recommended to use 6 mm (1/4 inch) diameter fasteners. However,
because mounting surfaces can vary, installers must select appropriate hardware for each
installation.

Important:

or other high-risk areas.

Other than the mounting bracket, no mounting hardware is supplied with

Local codes may impose additional mounting requirements in earthquake

975-0253-01-01 2–13

Installation

Mounting on Poles or Rails

T o mount the unit using poles:

1. Ensure that poles or rails are s ecurely assembled in place. If using horizontal
rails, two rails are required: one for the mounting bracket and another for
securing the bottom edge of the inverter (see Figure 2-6).

2. Connect the mounting bracket vertically to the pole or rail:

• Be sure to use at least two bolts to secure the bracket to the support.

• Position the lower edge of the bracket a minimum of 130 cm (51 inches)

• Position the top edge of the bracket a minimum of 34 cm (13.5 inches)

3. If using a single vertical pole, ensure that the inverter is secure and unable to
rotate around the pole.

above the floor or ground.

below any ceiling or roof.

Figure 2-6

Mounting Bracket

At least 2 bolts to
secure bracket to

poles/rails.

130 cm

(51”)

For securing

the bottom of

the inverter

Ground/Floor

Examples of Mounting on a Po le or Rails

34 cm

(13.5”)

46 cm

(18”)

100 cm

(39”)

2–14 975-0253-01-01

Mounting on Wallboard, Siding or Concrete

To mount the GT Inve rt e r to wallboar d, sid ing , or concrete :

1. Locate the area where the GT Inverter is to be installed.

2. Install backing support material if required.

At least 2 screws

with washers to

secure bracket

to plywood

Mounting the Inverter

34 cm (13.5”)

≥16.5 cm (6.5")

Ground/floor

Figure 2-7

130 cm (51")

Ground/floor

Single GT Inverter Multiple GT Inverters

130 cm (51")

Inst a lling th e Mount ing Bracket using Ply w ood Support

3. Using a level, place the mounting bracket against the wall surface so that the
bottom edge of the bracket is at least 130 cm (51 inches) above the ground.
Position the top edge of the bracket a minimum of 34 cm (13.5 inches) below
any ceiling or roof. See Figure 2-7.

4. Mark the location for mounting screws if using a wall stud for support. At
least four mounting screws and anchors are needed for concrete installations
or wallboard installations where no wall studs are available for support.

5. Remove the bracket and drill the holes using an appropriately sized drill bit.
Drill appropriately sized holes for screws or anchors.

6. Secure the brac ket to the supporting surface using at least two screws and
washers.

975-0253-01-01 2–15

Installation

Mounting the Inverter o n the Bracket

Before mounting the invert er, it is recommended to remove the communication
ports cover. With the cover removed, you can access all the mounting slots along
the bottom flange.

Mounting a Single Inverter

T o mount the inverter on the mounting bracket:

1. Place t h e GT Inv erter’s mounting hook, located on the back of the enclosure,
over the bracket and ensure the inverter is seated properly, as shown in
Figure 2-8.

2. After the unit is correctly seated on the bracket hook, locate the mounting
slots at the bottom of the unit, and mark the location on the wall for securing
screws.

3. Remove the inverter and drill pilot holes in the wallboard or siding for the
securing screws.

4. Reinstall the GT Inverter on the bracket and secure the bottom of the unit with
appropriate screws or anchors, and tighten.

Slide the mounting hooks on the inverter
over the hooks on the mounting bracket.

flange with

mounting slots

130 cm (51")

Ensure the inverter is
seated properly on the
mounting bracket

100 cm (39")

Figure 2-8

2–16 975-0253-01-01

Proper Placement of the Inverter on the Mounting Bracket

3

Wiring the Inverter

Chapter 3, “Wiring the Inverter”, provides procedures for making DC
and AC wiring connections for single and multiple inverter
installations. This chapter also includes information about
communications wiring and using GT-View monitoring software.

The topics in this chapter are organized as follows:

• “Connecting the DC Wiring” on page 3–2

• “Connecting the AC Wiring” on page 3–5

• “Connecting Multiple Inverters” on page 3–7

• “Communications Wiring for Multiple Inverters” on page 3–8

Wiri ng the Inverter

Connecting the DC Wiring

The GT Inverter is equipped with four PV quick connects (two positive, two
negative) for connecting up to two PV strings.

PV positive (+)
Multi-Contact connector

Figure 3-1

PV Quick Connect Locati on

PV negative (–)
Multi-Contact connector

AC quick connect
(see page 3–5)

WARNING: Shock hazard

Whenever a PV array is exposed to sunlight, a shock hazard exists at the output wires or
exposed terminals. Cover the PV arrays with opaque material before commencing any
wiring.

WARNING: Shock hazard

Before wiring the G T Inverter, ensure the main breaker in the primary utility breaker box
is switched OFF. Switch this breaker ON only after all wiring is complete d as instructed i n
the procedures.

CAUTION: Equipment damage

Improper wiring may cause permanent damage to the GT Inverter. Take special care to
ensure the positive (+) and negative (–) wires from a single array connect to the same
inverter.

Equipment Needed

• Conduit for wire runs and appropriate fittings/bushings

• Wire cutters/wire crimpers/wire strippers

• Digital Voltmeter

• Frequency counter (optional, for troubleshooting).

3–2 975-0253-01-01

• Female and male DC cable connectors to mate with the Multi-Contact
connectors PV- ADS P3/GWD (pos itive ) and PV-ADBP3/GWD (negative ) on
the G T Inverter. You will need two connectors (one female and one male) for
each PV string (you can connect up to two PV strings to the GT Inverter).

Connecting the PV Ar ray

The following procedure is illustrated in Figure 3-2. If there will be more than one
PV string, label the positive and negative wire pairs appropriately (for example:
PV 1, PV 2).

To wire the PV array to the GT Inverter:

1. If necessary, insta ll DC conduit from the PV string(s) to the GT Inverter.

2. Ter minate the wires coming from the PV string(s) with appropriate
Multi-Contact connectors.

CAUTION: Equipment damage

Before connecting the PV array to the inverter, check to ensure correct polarity and that
the voltage between the positive (+) and negative (–) is below 600 Vdc (UPV≤600 Vdc).

To check the PV array DC voltage:

1. Uncover the PV arrays and expose them to full sunlight. The sunlight must be intense

enough to produce the required output voltage.

2. Measure the PV array open circuit DC voltage across the DC positive (+) and negative

(–) terminals. This voltage must be less than 600 Vdc. Voltage over 600 Vdc will damage
the inverter.

3. Cover the PV arrays with an opaque material again.

Connecting the DC Wiring

3. Connect the POSITIVE (+) wire from the #1 PV string to a GT Inverter PV
positive (+) quick connect.

4. Connect the NEGATIVE (–) wire from the #1 PV string to a GT Inverter PV
negative (–) quick connect.

5. If necessary, repeat for the #2 PV string. Double check that the wires are in
the proper locations.

If only one PV string connection is used, cover the unused PV quick connects
with the seals provided.

WARNING: Shock hazard

Never connect or disconnect the PV modules from the GT Inverter under load (by pulling
the PV quick connects before disconnecting the grid). Always disconnect the GT Inverter
from the grid first.

975-0253-01-01 3–3

Wiri ng the Inverter

PV Array

–

+

PV String #2

–
+

PV String #1

Xantrex GT Inverter

Figure 3-2

Important:

box may be required. The installer must provide this equipment.

3–4 975-0253-01-01

DC Connections for a Two -Stri ng PV Array

Depending upon installation and local codes, fusing and/or a combiner

Connecting the AC W iring

WARNING: Shock hazard

AC utility wiring to the GT Inverter unit is performed directly at the main breaker panel.
This should be done only by a qualified installer or electrician.

WARNING: Shock hazard

Before wiring the G T Inverter, ensure the main breaker in the primary utility breaker box
is switched OFF. Switch this breaker ON only after all wiring is completed as instructed in
the procedures.

The GT Inverter can be connected to a single bi-directional meter, or to dual
meters, where one me ter indicates power used and the second meter indicates
power sold (power supplied back to the utility). Consult the local utility to
determine the proper components to install, and obta in any permits required prior
to installation.

The GT Inverter must be connected to the utility with three wires—one phase, one
neutral, and one protective earth (ground).

Connectin g the AC Wiring

Making AC C onnections Using Quick Connects

The GT Inverter is equipped with a quick connect for making AC connections. T o
make AC connec tions using the quick connec t, you must first prepare the wiring
between your utility panel and the GT Inverter.

You will need:

• Wire strippers

• Small (3 mm or less) slot-head screwdriver

Preparing the wi res

The AC wiring from the utility panel must be terminated with a Binder Female
cable connector (Binder Series 693 part number 99-4222-14-04) before being
con nect ed t o the AC quick con nect o n the GT Invert er.

To prepare the AC wiring:

1. If necessary, strip 1 cm (3/8 inch) of ins ulation on the three wires from the
utility panel.

2. Unscrew the female terminal from the casing of the female cable connector.
See Figure 3-3.

3. Unscrew the other components of the female cable connector .

4. Run the wires through the pr essing screw, pinch ring, seal, and shell of the
female cable connector.

975-0253-01-01 3–5

Wiri ng the Inverter

5. On the female terminal, connect the pr otective earth wire to the terminal
marked with the ground (  ) symbol. See Figure 3-4.

6. Connect the neutral wire to the te rminal marked with 1.

7. Connect the Phase L wire to the terminal marked with 2.
T erminal 3 is not used.

8. After ensuring all the wires are tightened i n their terminals, screw the casing
onto the female terminal.

9. Re pl ace t he remaining com ponents of the female cable connector, ensuring a
tight seal.

10. Tighten the pressing screw.

Pinch ring

AC connector terminals
(see Figure 3-4)

Shell

Seal

Female terminal

Figure 3-3

Phase L wire

Neutral wire

Figure 3-4

Connecting to the GT Inverter

To connect the AC connector to the GT Inverter:

Pressing screw

Outer ring

Notch

AC Connector (female)

Not used

Protective Earth
(ground) wire

AC Connector Terminals

1. Line up the notch on the female AC cable c onne ctor with the conne ctor on the
GT Inverter.

2. Insert the AC cable connector into the connector on t he GT Inverter.

3. Secure the connector by turning the outer ring.

3–6 975-0253-01-01

Connecting Multiple Inverters

For installations with multiple inverte rs, a separate PV array is required for each
GT Inverter unit. The output of each GT Inverter feeds a separate dual-pole circuit
breaker in the main utility service panel.

When connecting multiple inverters, complete the wiring and perform the
commissioning procedure for each inverter one at a time. For wiring instructions,
see “Connecting the DC Wiring ” on page 3–2 and “ Connecting the AC Wiring”
on page 3–5. For the commissioning procedure, see page 4–2.

WARNING: Shock hazard and equipment failure

If inverters “share” more than one PV array, an input current difference of over 1 A
between arrays can cause short circuit failure in each inverter. This failure will also
generate hazardous voltages around each unit.
In multiple inverter installations, it is very important to ensure each inverter is correctly
connected to its own PV array(s) and that no wires are crossed. For example, connect PV1
positive (+) and PV1 negative (–) to inverter 1 and PV2 positive (+) and PV2 negative (–)
to inverter 2.
Do not connect PV1 positive (+) and PV2 negative (–) to inverter 1 and PV2 positive (+)
and PV1 negative (–) to inverter 2. See Figure 3-5.

Connecting Multiple Inverters

Figure 3-5

–
+

PV Array #1 PV Array #2

GT Inverter #1

Improper multiple inverter connections

–
+

GT Inverter #2

975-0253-01-01 3–7

Wiri ng the Inverter

Communications Wiring for Multiple Inverters

Communications wiring be twee n multiple GT Inverters allows information about
each inverter and its associat ed PV array to be communicated between all of the
inverters in the system. Information about the entire system can be displayed on
any inverter LCD in the system.

For example, in a two-inverter system, if inverter #1 is producing 1500 W and
inverter #2 is producing 2000 W, both inverters display a total system power of
3500 W. The cumulative energy produced by both inverters that day is also
displayed.

Y ou can still view information for an individual inverter in a system. See “T o view
unit-specific screens in a multiple unit system:” on page 5–5.

Without communications wiring, each inverter in a system displays information
only for the unit and its a ssociated PV array.

Xanbus Net work Technol ogy

GT Inverters are Xanbus-enabled devices. They use Xanbus (a communications
protocol developed by X antrex) to communicate with other GT Inverters.
Network connections betwe en inverters are laid out in a “daisy chain” pattern,
with each d evice on t he n etw or k linked with separate le ng th s of cable, as sho wn in
Figure 3-6.

For more information on installing a Xanbus network, see the Xanbus System
Installation Guid e, avail abl e at www.xantrex.com.

Xanbus-enabled

Device 1

Terminator

Figure 3-6

Daisy Ch a in La yo ut

Xanbus-enabled

Device 2

Xanbus-enabled

Device 3

Terminator

CAUTION: Equipment damage

Connect only Xanbus-enabled devices.

Although the cabling and connectors used in this network system are the same as ethernet
connectors, this network is not an ethernet system. Equipment damage may result from
attempting to connect Xanbus to different systems.

3–8 975-0253-01-01

Communications Wiring for Multiple Inverter s

Termina tors Male network terminators (Figure 3-7) are required at both ends of the network to

ensure the communication signal quality on the network. Your GT Inverter comes
with one network terminator pre-installed.

GT Inverter Xanbus
ports

Figure 3-7

Male Network Terminator

Two RJ45 ports are provided on the GT Inverter for making network connections.
See Figure 3-8 for the location of these ports.

Multi-Contact DC connectors

RJ11 ports
(not used)

Figure 3-8

Location of Xanbus RJ45 Ports

RJ45
Xanbus ports

RS-232 port (used to connect a PC to
use GT-View. See page 3–12.)

Binder AC connector

975-0253-01-01 3–9

Wiri ng the Inverter

Cabling Requiremen ts

CAUTION: Equipment damage

Do not use crossover cable in a Xanbus system.

The network uses Category 5 (CAT 5) cable, a standard cable available from any
computer supply store. T he cabl e consists of eight conduc tors in f our twisted p airs
with an RJ45 modular connector wired to the T568A standard. Table 3-1 contains
the arrangements of wire colors to pin numbers for the T568A standard.

T able 3-1

Pin Number Conductor Name CAT 5 Cable Insulation Color

1 NET_S White/Green
2 NET_S Green
3 NET_C White/Orange
4CAN_L Blue
5CAN_H White/Blue
6 NET_C Orange
7 NET_S White/Brown
8 NET_C Brown

RJ45 Connector Requirements

The network cable uses modular RJ45 connectors, as shown in Figure 3-9. The
connector is suitable for cost-sensitive applications and is easily installed. The
RJ45 connector should be a modular plug, 8-position, 8-contact for round,
stranded, unshielded cable.

T568 A St andard Wiring

Figure 3-9

3–10 975-0253-01-01

RJ45 Connector

Purch asi ng N etwork Components

Consult your system designer to determine what network components will be
needed for your specific installation. Table 3-2 provides a partial list of network
components and part numbers. Pre-made cables are available in standard lengths
from 3 feet to 75 feet.

Call your dea ler or visit www.xantrex.com for information on purchasing
network components.

Communications Wiring for Multiple Inverter s

Table 3-2

Network Component Part Number

Network termination — Male (2 per pack) 809-0901
Network cable 3 ft. (0.9 m) 809-0935
Network cable 5 feet (1.5 m) 809-0936
Network cable 7 feet (2.0 m) 809-0937
Network cable 10 feet (3.0 m) 809-0938
Network cable 14 feet (4.3 m) 809-0939
Network cable 25 feet (7.6 m) 809-0940
Network cable 50 feet (15.2 m) 809-0941
Network cable 75 feet (22.9 m) 809-0942

Netw ork C om ponent s and Part Num bers

Guidelines for Routing the Networ k Cabl es

WARNING: Shock hazard

:

Do not route the network cables in the same conduit or panel as the AC and DC power
cabling.

To ensure maximum performance of your network, follow these guidelines when
routing the network cables. Route the cables before installing Xanbus-enabled
devices.

• Route the cables away from sharp edges that might damage the insulation.
Avoid sharp bends in the cable—no less than a 10 cm (4 inch) radius.

• Allow for some slack in the cable tension.

• Keep the alignment of wire pair s inside the sheath as straight as possible.

• Allow separation between data and power cables (data c ables should only
cross a power cable at right angles).

• Do not staple the cable with metal cable staples. Use the appropriate hardware
fasteners to avoid damage to the cable.

CAUTION: Unpredictable device behavior

Do not connect one end of the network to the other to make a ring or loop.

975-0253-01-01 3–11

Wiri ng the Inverter

Connecting Network Cable between Inverters

This procedure assumes only two inverter s are i nstalled. Howe ver, there can be up
to ten inverters wired in this configuration.

To provide com mun i cat i o n between multiple inverters :

1. Remove the comm port covers from all inverters. See Figure 3-10.

1. Connect the network cable to an empty RJ45 port in Inverter #1.

2. Pass the cable through the cable clamp on the comm port cover of Inverter #1.

3. Pass the cable between Inverter #1 and Inverter #2, securing the cable
appropriately.

4. Pass the cable through the cable clamp on the comm port cover of Inverter #2.

5. Connect the network cable to an empty RJ45 port in Inverter #2.

6. For more than two inverters, continue connecting cable as described above.

7. If not already installed, insert male network terminators into the empty RJ45
ports in the inverters at the beginning and end of the network.

After connecting network cables and inserting terminators, there should be no
empty RJ45 ports in any connected inverter.

8. After completing network cabling, replace the comm port covers on all units.

Cable clamp

Figure 3-10

Replacing the Comm Port Cover

Communications Wiri ng for Monito ring a Single Inverter

You can view GT Inverter operational data on a personal computer using the
Xantrex GT Solar Inverter Viewer (“GT-View”), which you can download free of
ch ar ge at www.xantrex.com.

T o use GT -View, you must connect your computer’s serial port to the GT Inverter
RS-232 port (see Figure 3- 8).

RS-232 cable
requirements

3–12 975-0253-01-01

T o connect your computer to the GT Inverter, you must use a serial DB9 “straight
through” cable.

Communications Wiring for Multiple Inverter s

The RS-232 connector on the GT is configured as follows:

• Pin 2: transmit

• Pin 3 : received

• Pin 5: ground.
All other pins are unused.

To connect a single GT Inverter to a personal computer:

1. W ith DC and AC power disconnected from the inverter, remove the comm
port cover.

2. Plug the male end of the serial cable into the G T Inverter RS-232 port.

3. Pass the female end of the serial cable through the cable clamp on the comm
port cover.

4. Replace the c omm port cover.

5. Plug the female end of the serial cable into your computer ’s serial port.

6. Restore DC and AC power to the inverter.

When power is restored to the GT Inverter, you can run GT-View on your
computer to monitor the inverter’s operation.

Note: In multiple installations, GT-View monitors only the inverter to which the

computer is connected. However, if the inverters are connected with a Xanbus cable,
GT-View will display total system wattage and the accumulated daily energy produced
by all inverters. To monitor multiple inverters, you require multiple DB9 cable
connections (one per inverter) to your computer.

GT-View displays operational data such as power output in AC watts, lifetime
energy produced, and inverter temperature. Data is updated every two seconds
(default setting).

Figure 3-11

GT-View Display

To configure GT-View, right click anywhere in the GT-View display and select
Settings from the pop-up menu. The GT-V i ew Options window will appear.

975-0253-01-01 3–13

Wiri ng the Inverter

Figure 3-12

GT -Vie w Options

For more information about GT- View, see the GT- View Us e r Manual, included
with the GT-View software.

3–14 975-0253-01-01

4

Starting the Inverter

Chapter 4, “Starting the Inverter”, contains information on starting up
the Xantrex Grid Tie Solar Inverter and performing a functional test.

The topics in this chapter are organized as follows:

• “Commissioning Procedure” on page 4–2

• “Disconnect Test” on page 4–3.

Star ti n g the Inv e rt e r

Commissioning Procedure

T o ensur e t hat each GT Inverter i s wired correct l y, each inver t er should be wired
individually using the wiri ng procedures in Chapter 3, and turned on using this
commissioning procedure. Once a single inverter has been commissioned, it
should be turned off and the wiring and commissioning procedures should be
performed for the next inverter. Repeat in this manner until all the inverters in the
installation have been connected.

Perform this commissioning procedure step-by-step for each GT Inverter
installed. Do not attempt to connect all wires to all inverters and turn on all at the
same time.

CAUTION: Equipment damage

Improper wiring may cause permanent damage to the GT Inverter. Take special care to
ensure the positive (+) and negative (–) wires from a single array connect to the same GT
Inverter.

WARNING: Shock hazard

Hazardous voltages are present from two sources. Use extreme caution during startup
procedure. Before applying power to the GT Inverter, ensure all AC and DC wiring is
correct.

WARNING: Shock hazard

Ensure the protective earth (ground) wire from the inverter is connected to Earth before
applying AC. Failure to do so could result in a shock hazard upon touching the enclosure.
Consult the local utility for specific grounding requirements.

To start the G T In vert er:

1. Ensure the AC breaker is off.

2. Ensure the correct multi-contact PV connectors are firmly plugged into the
GT Inverter as described in “Connecting the DC Wiring” on page 3–2.

3. Ensure the AC quick connect is fi rmly inserted into the AC connector on the
GT Inverter and the coupling ring is tight.

4. Uncover the PV array and/or close the main DC disconnect switch, if one is
installed.

Ensure the PV array is producing the required output voltage.

5. Connect the utility grid voltage by switching the AC circuit breaker on.

6. Monitor the startup sequence on the front panel LCD.
The G T Inverter starts automatically when it receives DC voltage within the

correct range and it is connected to an acceptable grid.

4–2 975-0253-01-01

7. Run the disconnect test.

Disconnect Te st

The disconnect test is designed to verify correct operation of the Xantrex Grid Ti e
Solar Inverter both on initial operation and periodically through its life as required
by the utilities. This test ensures that the Xantrex Grid Tie Solar Inverter does not
“island” by sending electricity to the utility grid when the local utility has shut off
the grid for repairs, or when the utility wiring is damaged.

When operation of the inverter has been verified and the unit is producing power,
run the disconnect test as described in this procedure.

To run the disconnect test:

1. Switch off the AC circuit for the inverter.

Disconnect Test

To monitor the startup sequence on the front panel LCD, check the GT
Inverter LCD. The startup screens (see Table 5-1 on page 5–3) should appear

for five s e conds each, and then the “Reconnecting in sss seconds” special
screen (see Table 5-10 on page 5–8) will appear until the protec tion timer
countdown is completed.

This can b e accom p li shed by switching the breaker on the ma in panel t hat
feeds the inverter(s). The disconnect for the home or business may be used as
well.

2. Have someone watch the front panel of the inverter to ensure the green light
on the front of the inverter goes out.

The green light goes out when the AC circuit is switched off, disconnecting
the inverter from the AC gr id. The front panel display will show an AC Fault
display, indicating that the AC is out of the operating range.

3. Switch on the AC circuit for the inverter.
The inverter will respond by beginning its countdown. The green light will

remain off. A short time after applying AC, the green light will turn on and
the inverter will begin to send power to the grid. The display will then return
to showing the power being produced and the total kWh produced to date.

4. If you have another G T Inverter to commission, sw itch off the AC circuit for
the inverter you have just commissioned and tested by switching off the
breaker on the main panel. You can then run the commissioning procedure
and disconnect test on the next inverter.

975-0253-01-01 4–3

4–4

5

Monitoring the Inverter

Chapter 5, “Monitoring the Inverter”, contains information for
understanding the LCD screens and the LED indicators.

The topics in this chapter are organized as follows:

• “Monitoring the Front Panel Display” on page 5–2

• “Front Panel Display Screens and What They Mean” on page 5–3

• “Status Indicator Lights” on page 5–10.

Monitoring the Inverter

Mo nito ring the Fr o n t Pane l Display

During startup During startup, the inverter’s front panel liquid crystal display (LCD, see

Figure 5-1) shows the first three screens described in Table 5- 1, “Startup Screens
on GT Inverter Front Panel Display” on page 5–3.

During waiting
period

When the protection timer begins, the inverter displays “Reconnecting in sss
seconds” (see Table 5-10, “Special Message Screens” on page 5–8).

During operation When the protection timer stops, the GT Inverter begins selling power, indicated

by the power output reading in the display (see Table 5-2, “Normal Operation
Default Screen” on page 5–4).

When th e inverter i s
offline or there is
fault condition

When the GT Inverter is off line (for example, at night) or a fault condition has
been det ect ed, the LCD shows a mes sage screen to i nd icate that s tat e. The specifi c
fault condition will be identified. See Table 5-5, “Offline Mode Default Display”
on page 5–5 and T able 5-8, “Fault Message Screens” on page 5–7.

Important:

The values in the front panel LCD are not user adjustable.

Front panel LCD

Tap Xantrex logo for
backlight/status screens.

Viewing more
information

Figure 5-1

Additional screens of inf or mation about the performance of the GT Inverter c an be
displayed by tapping the Xantrex logo on the inverter front panel. This causes the

Front Panel L CD Location

LCD to cycle through a series of information screens in Normal Oper a tion,
Offline or Fault modes. These are described in detail in the following section,
“Front Panel Display Screens and What T hey Mean”.

5–2 975-0253-01-01

Fr ont Panel Display Screens and What They Mean

Front Panel Display Screens and What They Mean

The front panel display s hows dif ferent m essage s creens dur ing dif ferent modes of
operation (Sta rtup, Normal, Offli ne, and Fault) . All single units display a basic set
of message screens; multiple unit systems display additional screens in Normal
Operation and O ffline modes.

In addition there are Special message screens that may appear in any operati onal
mode. All of these message screens are described in more detail in the following
tables.

Startup Mode

During startup, the GT Inverter displays three message screens on its front panel
LCD. These screens appear in the following order (Table 5-1).

Table 5-1

GT3.0-DE-230

Flash = 01.01

..ROM = 01.01

Vh=253 Vl=195

Fh=51.0 Fl=49.0

* all numbers in this and following tables are examples only. Your model,

Startup Screens on GT Inverter Front Panel Display

Display*

Xantrex

revision numbers, and performance data will vary.

Duration Description

5 sec. Startup message 1: Inverter name and model

number

5 sec Startup message 2: Model and revision

numbers for Flash and ROM memory on the GT
Inverter. The ROM revision number applies to
the protection processor.

5 sec Startup message 3: Anti-islanding Utility Grid

trip points.

Vh: high voltage threshold
Vl: low voltage threshold
Fh: high frequency threshold
Fl: low frequency threshold

The protection timer begins its countdown during startup and the “Reconnecting
in sss seconds” screen appears until the timer countdown is complete.

Normal Operation Mode

The LCD on the G T Inverter is refreshed every two seconds, so all readings are
current to within two seconds. There is a default display available at all times, and
a series of additional screens that can be displayed by tapping the Xantrex logo
near the LCD to change the display.

No rmal Op er at io n
default display

975-0253-01-01 5–3

After the protection timer has completed its countdown and during normal
operation, the GT Inverter displays the normal operation message screen shown in
Table 5-2.

Monitoring the Inverter

More screens for all
systems

T able 5-2

System 2000W

Today 9.875kWh

Normal Operation Default Screen

Display Description

Power being produced by the system now.
Cumulative energy produced by the system today.

If there is sufficient energy from the PV array, this screen is displayed
continuously while the system is operating normally. In a multiple unit system
connected by network cables, the power and cumulative energy values displayed
are for th e entir e sys t em .

During low light conditions when the GT Inverter ca nnot produce any power, the
Normal Operation default sc reen flashes alternately (every two seconds) with the
Insuf f ici en t Solar Ene r g y scr een (s ee T ab l e 5-10, “Speci al Message Screen s” on
page 5–8).

Besides the default normal operation dis play, more system information messages
can be viewed.

To view more Norm al Operation information :

• Tap the Xantrex logo near the LCD to advance the display to the next screen.
Normal operation scree ns shown in Table 5-3 are dis played in the order given,
as you tap successively on the unit. They are common to all GT Inverter
systems, no matter how many units are installed.

If you continue to tap the unit, then the LCD continues to cycle through all of the
available normal operati on screens . Each screen is displayed for a maximum of
30 seconds. If you do not tap again during that ti me period, then the LCD
backlight turns off and the display reverts to the default system message screen.

T able 5-3

Tap Display* Description

1st time System 2000W

2nd time System Lifetime

3rd time Time Online

4th time Array Readings

5th time Grid Readings

Normal Operation Screens for All GT Inverters

LCD backlight turns on for better readability

Today 2.500kWh

305kWh

Today hh:mm:ss

350.5V 8.4A

242.6V 60.0Hz

and default Normal Operation screen is
displayed.

Lifetime energy produced by the GT Inverter
system.

Length of time inverter has been online today, in
hours (hh), minutes (mm) and seconds (ss).

Immediate DC voltage and current readings
from the PV array.

Immediate AC voltage and frequency readings
from the Grid.

5–4 975-0253-01-01

Fr ont Panel Display Screens and What They Mean

* In a m ultiple unit system with network cables properly installed, the sys tem

values displayed are for the entire system. For example, in a two-inverter
system, if inverter #1 is producing 1500 W and inverter #2 is producing
2000 W, both inverters display a total system power of 3500 W. Time online
and array readings are for the local inverter and PV array associated with that
inverter.

Additional
me ss ages f or
multiple unit
sys t ems on l y

In addition, to the normal system message screens, additional screen s specific to
each GT Inverter unit can be displayed when the unit is connected with
communications wiring to other GT Inverters. These screens are only available on
multiple unit systems.

To view unit-spe cific screens in a multiple unit system:

1. Tap the Xantrex logo near the LCD to advance the display to the next screen.
Continue tapping until the final system message screen (“Grid Readings”, in
Table 5-3 above) is displayed.

2. Tap again. Normal operation screens shown in Table 5-4 are displayed in the
order given, as you tap successively on the unit.

If you continue to tap the unit, then the LCD wil l cycle through all of the available
normal operation screens. Each message is displayed for up to 30 s econds. If you
do not tap again within that time period, then the LCD backlight turns off and the
display reverts to the default normal operation screen (Table 5- 2).

Table 5-4

Additional Normal Operation Screens for Each GT I nverter in a

Multiple Unit System

Tap Display Description

6th time Unit 1500W

Today 1.250kWh

Power being produced by this unit now.
Cumulative energy produced by this unit today.

7th time Unit Lifetime

150kWh

Lifetime energy produced by this GT Inverter unit

Offline Mode

Offline default
display

975-0253-01-01 5–5

At night and when no pow er is be ing produced by the PV array (offline mode), the
GT Inverter displays the s creen shown in Table 5-5.

Table 5-5

Offl i ne Mod e De fault Display

Display Description

Inverter

Offline

Displayed at all times while the system is offline.

Monitoring the Inverter

Offline messages
for all systems

Additional message screens can be viewe d when the system is offline by tapping
the Xantrex logo near the LCD. Each additional tap displays the next screen, in
the order shown in Table 5-6.

These message screens are common to all GT Inverter systems, no matter how
many units are installed. If you continue to tap the unit, then the LCD will
continue to cycle through all of the available offline mode screens.

T able 5-6

Tap Display*

1st time Inverter

2nd time System 0W

3rd time System Lifetime

4th time Time Online

* In a multiple unit system with network cables properly installed, t he system

Offline Mode Screens for All GT Inverters

Description

LCD back light turns on for better readability

Offline

Today 2.50kWh

305kWh

hh:mm:ss

values displayed are for the entire system. Time online is for the local inverter.

and default Offline Mode screen is displayed.
Power being produced by the system now.

Cumulative energy produced by the system
today.

Lifetime energy produced by the system.

Total time that the system was online today, in
hours (hh), minutes (mm) and seconds (ss).

Additional Offline
messages for
multiple unit
systems

Multiple unit systems in offline mode display all of the message screens shown in
T able 5-6, plus the additional screens shown in Ta ble 5-7. These additional
scre ens ar e dis pl ayed f ollowi ng t he “T i m e On li ne” scr een.

These screens are only displayed when multiple GT Inverters are connected by
network cables. If you continue to tap the unit, then the LCD continues to cycle
through all of the available offline mode screens.

T able 5-7

Additional Offline Mode Screens for Each G T Inverter in a Multiple

Unit System

Tap Display Description

5th time Unit 0W

Today 1.25kWh

6th time Unit Lifetime

150kWh

Power being produced by this unit now.
Cumulative energy produced by this unit today.

Lifetime energy produced by this unit.

5–6 975-0253-01-01

Fr ont Panel Display Screens and What They Mean

Fault Mode

When a fault state is detected, the appropriate fault message appears on the front
panel display at the next screen refresh (i.e., within 2 seconds). The GT Inverter
fault message screens are shown in Table 5-8.

Fault Mode causes T h ese mess ag e screen s only ap pear when there is a fault, and the n flash

alternately with the Inverter Offline default screen (Table 5-5) until the fault is
corrected.

Table 5-8

DC Voltage Fault

AC Voltage Fault

Frequency Fault

Over Temp Fault

81.4C 178.5F

Ground Fault
Reset System

Fault Message Screens

Display Description

145.5V

280V

0.0Hz

When the actual DC voltage is over or under the allowable
range, 165 to 600 Vdc. Self-clearing, no action required.
The PV array should be configured such that DC voltage
does not fall below 195 Vdc or rise above 600 Vdc.*

When the actual AC voltage is over or under the allowable
range, as specified in “Output” on page A–2.
This is a utility fault; it will clear itself when the AC voltage
comes within the specified range.†

When the actual Frequency is over or under the allowable
range, as specified in “Output” on pageA–2. This is a utility
fault; it will clear itself when the frequency comes within the
specified range.†

When the unit’s internal temperature is greater than 80° C
(176° F), the unit will shut down automatically and only
restart when the temperature has dropped to less than 70° C
(158° F).

When a grounding fault is detected. The ground fault
protection fuse will be blown (North American models only).
The system must be shut down completely, the fault
corrected, and the fuse replaced.‡ The system can then be
restarted. Troubleshooting a grounding fault should be
performed by qualified personnel.

Unit Shutdown

via Remote

Protection uP

Not Responding

* It is normal to receive this fault during low light conditions at dawn or dusk. At

such times, the array does not have sufficient energy to power the inverter, so
the PV voltage drops below 165 volts occasionally.

† Grid fault. When this fault is cleared the protection timer will begin its

countdown and you will see the “Reconnecting in sss seconds” and “I nverter
Offline” special screens (see Table 5-10) flashing alternately until the
countdown is complete.

‡ Applicable to North American models only. European models do not have a

ground fault protection fuse installed.

975-0253-01-01 5–7

Appears if the GT Inverter unit has been shut down via a
computer connected to the RS-232 port.

The protection processor is not responding.

Monitoring the Inverter

Additional Fault
messages for all
systems

Additional message screens can be viewed in fault mode by tapping the Xantrex
logo near the L CD. Each additional tap displays the next s cree n in the order
shown in Table 5- 9.

T able 5-9

Tap Display*

1st time Current fault message

2nd time System 0W

3rd time System Lifetime

4th time Time Online

5th time Array Readings

6th time Grid Readings

* In a multiple unit system with network cables properly installed, t he system

Additional Fault Mode Screens

Description

LCD backlight turns on for better readability.

screen (see Table5-8)

Energy being produced by the system now.

Today 2.500kWh

305kWh

Today hh:mm:ss

350.5V 8.4A

242.6V 60.0Hz

values displayed are for the entire system. Time online and array readings are
for the local inverter and PV array associated with that inverter.

Cumulative energy produced by the system
today.

Lifetime energy produced by the GT Inverter
system.

Length of time inverter was online today, in
hours (hh), minutes (mm) and seconds (ss).

Immediate DC voltage and current readings of
power from the PV array.

Immediate AC voltage and frequency readings
of power from the Grid.

Speci al Sc reen s

Special message screens are dis pl ayed in speci f ic si tu at io ns tha t are not
considered fault situations. They can appear in any mode of operation. These
screens are described in Table 5-10.

Table 5-10

Reconnecting in

sss seconds

5–8 975-0253-01-01

Special M essage Screens

Display Description

Time remaining in seconds (sss) before the GT Inverter
reconnects to the Grid. This is a protection timer that runs at
startup and after any Grid fault.

Inverter

Offline

GT Inverter switching (or has switched) from Normal
Operation to Offline mode. This screen may flash alternately
with a Fault message screen.

Fr ont Panel Display Screens and What They Mean

Cus tom Screens

Table 5-10

System *3500W

Today 15.56kWh

Unit *1800W

Today 7.82kWh

Insufficient
Solar Energy

Special M essage Screens

Display Description

The “*” in these two screens (see Table 5-2 and Table 5-4)
indicates that the unit is derating its output power because the
inverter heat sink temperature is above 75° C (167° F).

The asterisk only appears when the power is actually being
limited by the inverter.

Indicates the GT Inverter is not producing power due to
insufficient solar energy during low light conditions in early
morning or late afternoon or when the PV array is in shade.
This screen flashes alternately with the Normal Operation
default screen.

Two custom screens are available. The inverter does not display them unless they
are configured using using GT-View (see page 3–12). If configured, the custom
screens display as the fourth and fifth screens during the startup sequence. They
can also be viewed by tapping the unit dur ing normal operation and fault mode.

The first custom screen is intended for the home owner to display information
such as t he n ame or l ocat io n of the PV array associated with t he inver t er.

The second custom screen is intended for installers, who can configure the screen
to display, for example, contact information for service.

975-0253-01-01 5–9

Monitoring the Inverter

Status Indicator Lights

The GT Inverter is equipped with two status indicator lights (L EDs) l ocated below
the front panel LCD (Figure 5-2). These LEDs indica te the inverter’s current
status (Ta ble 5-1 1) and assist in troubleshooting the performance of the unit.

Only one indicator light will be lit at any time.

Table 5-11

LED on Means

Green GT Inverter is on (DC voltage and AC voltage are qualified and the

Red Ground fault condition detected.

Status Indicator LEDs

protection timer has finished) and delivering energy to the grid. No action
required. Turns off when a fault state is detected.

Check for any fault messages on the display (see Table 5-8), and refer also
to Table 6-1, “Troubleshooting the GT Inverter” on page 6–4 to resolve the
fault condition.

Green LED

Red LED

Figure 5-2

5–10 975-0253-01-01

Location of Status Indicator Lights

Maintenance and

6

Troubleshooting

WARNING: Electrical shock and fire hazard

Do not disassemble the GT Inverter. It does not contain any user serviceable parts.
Attempting to service the unit yourself could result in electrical shock or fire.

Chapter 6, “Maintenance and Troubleshooting”, contains information
about how to provide general maintenance for the Xantrex Grid Tie
Solar Inverter. It also provides information about troubleshooting the
unit.

The topics in this chapter are organized as follows:

• “Factors Affecting GT Inverter Performance” on page 6–2

• “Performing General Maintenance” on page 6–3

• “Identifying Error/Fault Conditions and Solutions” on page 6–4.

Maintenance and Troubleshooting

F actors Affecting GT Inverter Performance

This section describes several factors that will affect the amount of power that a
properly installed and operating GT Inverter can produce.

PV Array Factors

PV array ratings PV arrays are rated at ideal factory conditions, such as specified illumination

(1000 W/m
and specified temperature (25 °C / 77 °F), that seldom reflect real-world
installat ions. This is called the STC (Standard Tes t Condition) rating and is the
figure that appears on the PV modul e nameplate label.

Expected
performance

T em perature and
reduced output

A properly designed and installed PV system will produce less than its peak
STC-rated output. Actual production depends on several unavoidable
environmental factors described in this section.

PV array temperature affects the output of the entire system. As the temperature
on the array surface heats up, its energy output goes down. Roof-mounted arrays
also collect the heat generated by the roof surface (or trapped under the array) and
will produce less output than pole-mounted arrays, which allow greater air
circulation behind the panels.

Important:

circuits from overheating and possible damage in high heat conditions. For maximum
output in hot climates, mount the GT Inverter in a shaded location with good air flow.

Angle of the sun The angle of the sun in r elation to the PV array s urface—the array

orientation—can dramatically affect the PV array output. The array energy output
will vary depending on the time of day and time of year as the sun’s angle in
relation to the array changes. Sunlight output decreases as the sun approaches the
horizons, due to t he greater atmospheric air mass it must penetrate. This reduces
both the light intensity that strikes the array’s surface and spectrum of the light. In
general, you can expect only four to six hours of direct sunlight per day .

2

), spectrum of the light (Air Mass 1.5 standard reference spectrum),

The GT Inverter will reduce its energy output to protect its electronic

Partial shade Shading of only a single module of the array will reduce the output of the entire

system . Such shad in g can be cau se d by someth in g as sim pl e as the shadow of a
utility wire or tree branch on part of the array’s surf ace. This condition, in effect,
acts like a we ak battery in a flashlight, reducing the total output, even though the
other batteries are good. However, the output loss is not proportionate to shading.

The GT Inverter is designed to maximize its energy production in all of the above
situations using its MPPT algorithm.

6–2 975-0253-01-01

Other Factors

Other factors that contribute to system losses are:

• Dust or dirt on the array

• Fog or smog

• Mismatched PV a rray modules, with slight inconsistencies in performance
from one module to another.

• Inverter effi cien cy

• Wire lo ss es

For additional information and technical notes concerning PV array performance,
please visit our Web site at www.xantrex.com.

Performing General Maint e na nce

Follow these simple routines to ensure many years of service and optimal
performance of your solar energy system.

1. Keep the heat sink clear of dust and de bris.

Perfo rm i n g Ge ne r a l Main te nanc e

WARNING: Shock and fire hazard

Do not use a pressure washer to clean the GT Inverter, or use other cleaning methods that
could allow water to enter the unit.

2. Clean the PV array with flowing water whenever it is visibly dirty, during a
cool time of the day.

3. Periodically inspect the system to m ake sure that all wiring and supports are
secur el y i n place.

4. On a sunny day near noon on March 21 and September 21 of each year,
review the output of the system and compare it with the previous year’s
reading. Maintain a log of system performance readings so that you can
recognize when system performance becomes inconsistent.

975-0253-01-01 6–3

Maintenance and Troubleshooting

Identifying Error/Fault Conditions and Solutions

Most error or fault conditions will be identified by fault message screens on the
GT Inverter front panel LCD. These a r e described in the “ Fault Mode” section on
page 5–7. Most of thes e fault conditions are self-correcting and require no user
action to remedy.

See “Front Panel Display Screens and What They Mean” on page 5–3 for more
information.

Table 6-1 is intended to assist in de termini ng fault conditions that may require
user action to remedy.

T able 6-1

Problem Possible Cause Solution

The inverter’s LEDs and display are
blank and the inverter does not
operate in sufficient sunlight.

The display reads “Inverter Offline”
and “AC Voltage Fault.”

The display reads “Inverter Offline”
with sufficient sunlight.

The display reads “Inverter Offline”
and “DC Voltage Fault” with
sufficient sunlight.

T roubleshooting the GT Inverter

Utility service panel AC and DC
breakers are switched off.

Utility service panel breakers are
switched off.

AC grid voltage is not present or
incorrect.

DC breakers are switched off (if
installed), or external DC fuses are
blown (if installed).

DC array voltage is not present.

DC voltage is present but incorrect. Check DC connections at the

Turn on the breakers in the sequence
described in “Commissioning
Procedure” on page 4–2.

Turn on utility panel breakers.

Check AC connections at the
inverter’s terminals. Ensure AC
voltage within the range specified in
“Output” on page A–2 is present.

Turn on any DC breakers and check
any DC fuses.

Check DC connections at the
inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays.

inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays. Ensure a voltage of
195–550 VDC is present at the
inverter’s terminals.

Only the inverter RED LED is
illuminated and the display reads
“Ground Fault.”

6–4 975-0253-01-01

Ground fault condition detected on
the PV array.

The PV system should be checked
by a qualified electrician and
repaired. See Table 5-8 on page 5–7.

A

Specifications

Appendix A, “Specifications”, contains information about the
electrical and environmental specifications of the Xantrex Grid Tie
Solar Inverter.

The topics in this appendix are organized as follows:

• “Electrical Specifications” on page A–2

• “Environmental Specifications” on page A–6

• “Mechanical Specifications” on page A–6
All specifications are subject to change without notice.

Specif ications

Electrical Specifications

Input

GT 2.5 GT 2.8 GT 3. 8

Input voltage, Maximum Power Point range 195 to 550 Vdc
Absolute maximum array open circuit voltage 600 Vdc
Maximum input current 14.1 A dc 15.7 A dc 21.3 A dc
Maximum array short circuit current 24 A dc
Recommended PV array power Up to 2750 W Up to 3070 W Up to 4180 W
Reverse polarity protection Short circuit diode

Output

Germany Spain
GT 2.5-DE GT 3.8-DE GT 2.8-SP GT 3.8-SP

Maximum output power 2500 W ac 3800 W ac 2800 W ac 3800 W ac
Nominal output power 2300 W ac 3300 W ac 2500 W ac 3300 W ac
Maximum output current 13.6 A 19.0 A 14.3 A 19.0 A
Nominal grid voltage 230 Vac, +10/-15% 230 Vac, +10/-15%
Nominal grid frequency 50 ± 0.2 Hz 50 ± 1.0 Hz
Total Harmonic Distortion (THD) <3% <3%
Power factor >0.9 >0.9
Islanding protection ENS integrated Vac, fac as per RD 1663/2000
Output characteristics Current source Current source

A–2 975-0253-01-01

Adjustable Disconnect Settings

Islanding protection is an essential safety feature that ensures no person working
on the grid is harmed by a distributed energy source. Default software settings are
programmed into each GT Inverter at the f actory to ensure it does not island
according to relevant safety regulations (VDE 0126, RD 1663/2000).

In some instances it may be desirable from both a utility and customer point of
view to adjust these default s etti ngs. For example, the GT Inverter may e xperience
“nuisance trips” (taking the inverter “offline” ) if the grid is weak and the voltage
falls outside the allowable range specified in the regulations. It may be difficult
for a utility to upgra de the grid to eliminate this problem. With permission from
the utility, the factory settings may be changed to allow the G T inverter to operate
over a wide r grid voltage range.

These settings are password protected and should only be changed by qualified
service personnel, using a special software application provided by Xantrex.
Changing any values may compromise compliance with safety regulations. Do
not do so without first consulting with the utility and agreeing on acceptable
settings.

The default values of these settings differ from the utility specifications on page
A–2. These differences take into account the accuracy ranges listed in the table
below, and are intended to ensure that utility specifications are always met.

Electrical Sp ecifications

Note: Disconnect settings on German models are not adjustable.

Defau lt Values

230 Vac/

Setting

AC Low Voltage 198 Vac
AC High Voltage 250 Vac
AC Low Frequency 49.1 Hz
AC High Frequency 50.9 Hz
Reconnect Delay 180 sec. 0–600 sec. +/– 5 sec.

50 Hz (SP)

Adjustment

Range Accuracy

180–269 Vac +/– 3 Vac

46.0–62.0 Hz +/– 0.1 Hz

975-0253-01-01 A–3

Specif ications

Output Power Versus Ambient Temperature

Once the heat sin k o n the inv er t er reaches a max imum t em per at u r e limit, the GT
Inverter reduces its energy output to ensure maximum component ratings a re not
exceeded.

4000

3500

3000

2500

2000

Power (Watts)

1500

1000

500

GRID TIE SOLAR INVERTER

Typical Thermal Performance

- Output Power versus Ambient Temperature -

0

-25-15-5 5 152535455565

Figure A-1

Ambient Tem perature ( C)

GT2.5 GT2.8 GT3.8

Output Power vs. Ambient Temperature

A–4 975-0253-01-01

Efficiency

Maximum efficiency 95%
Euro efficiency 93.9%
Nighttime tare loss 1 W

100

90

80

Efficie ncy (%)

70

GT INVERTER EFFICIENCY

195VDC, 230VAC, 25de gC

Electrical Sp ecifications

60

50

0 500 10 00 1500 200 0 250 0 3000

Figure A-2

Outp ut Power (W)

Typical Efficiency

975-0253-01-01 A–5

Specif ications

Environmental Specifications

Operating temperature range -25 to +65 °C (-13 to +149 °F)
Storage temperature range -40 to +85 °C (-40 to +185 °F)
Power derating See Figure A-1 on page A–4
Tolerable relative humidity limit Operating: 100% condensing

User Display

Type alphanumeric liquid crystal
Size 2 lines by 16 characters
Backlight yes

Display Accuracy

Instantaneous Power +/- (30 W + 1% of reading)
Voltage +/- (1% of rating + 1% of reading)
Current +/- (1% of rating + 1% of reading)
System Lifetime energy +/- 5%

Storage: <95%, non-condensing

Mechanical Specifications

Outdoor enclosure IP54, Rainproof
Inverter dimensions

(H × W × D)
Shipping dimensions

(H × W × D)
Inverter weight 18.7 kg (41 lb)
Shipping weight 24.9 kg (54.7 lb)
Input terminals Multi-contact Quick Connect PV-ADSP3/GWD (male)

Output terminals Binder 693 Series male socket (mates with supplied

55.1 × 40.3 × 14.6 cm (21.7 × 15.9 × 5.7 inches)

69.2 × 51.8 × 26.2 cm (27.2 × 20.4 × 10.3 inches)

PV-ADBP3/GWD (female)

female cable connector PG13,5 p/n 99-4222-14-04)

A–6 975-0253-01-01

Warranty an d R e turn Inform a tio n

Warranty

What does this warr a nty cove r an d how long do e s it last? This Limited Warranty is provided by Xantrex

T echnology Inc. (“Xantrex”) and covers defects in quality in workmanship and materials (“Defects”) in your Xantrex
Grid Tie Solar Inverter. This warranty lasts for a period of five years (the “Warranty Period”) from the date of
purchase at point of sale to you, the original end user customer. This Limited Warranty is transferable to subsequent
owners but only for the unexpired portion of the Warranty Period.

What will Xantrex do? If there is a Defect, Xantrex will repair or replace the defective product free of charge,

provided that:
(a) you have followed the service procedure below and have not been able to get a remedy from your dealer;
(b) you notify Xantrex, without undue delay, of the Defect within the Warranty Period; and
(c) Xantrex, through inspection, troubleshooting, or other means establishes the existence of a Defect that it is

covered by this Limited Warranty.
Xantrex will, at its option, use new and/or reconditioned parts in performing warranty repair and building

replacement products. Xantrex reserves the right to use parts or products of original or improved design in the repair
or replacement. If Xantrex repairs or replaces a product, the warranty is suspended during the repair or replacement
and continues for the remaining portion of the original Warranty Period or 90 days from the date of the completed
repair activity, whichever is greater. All replaced products and all parts removed from repaired products become the
property of Xantrex.

Xantrex covers both parts and labour necessary to repair the product. If the product was sold in Spain, Xantrex will
cover costs for products returned directly to Xantrex via a Xantrex-selected non-expedited surface freight and
packing.

How do you get service? If you are unable to contact your dealer, or if your dealer is unable to provide service,

contact Xantrex directly at the following numbers:
EUROPE:

Telephone: [phone]
Fax: [phone]
Email: [e-mail]

If your dealer is unable to provide service, direct returns may be performed according to the Xantrex Return Material
Authorization Policy described in your product manual. For some products, Xantrex maintains a network of regional
Authorized Service Centers. Call Xantrex to see if your product can be repaired at one of these facilities.

In any warranty claim, dated proof of purchase must accompany the product and the product must not have been
disassembled or modified without prior written authorization by Xantrex.

Proof of purchase may be in any one of the following forms:

• The dated purchase receipt from the original purchase of the product at point of sale to the end user, or

• The dated invoice or purchase receipt showing the product exchanged under warranty

975-0253-01-01 WA–1

Warranty and Return

What does this warranty not cover? This Limited Warranty does not cover normal wear and tear of the

product or costs associated with replacing consumable items such as air filters, fuses, arrestors, etc. A shorter than
normal life during the Warranty Period caused by excessive use or incorrect use is not considered a Defect. Please
consult your Owner’s Guide to determine the proper use of the product.

This warranty does not apply to and Xantrex will not be responsible for any damage to the product:
a) if it has not been used in accordance with the Owner’s Guide supplied with the product, if it has been damaged

during shipping, mishandled, neglected, improperly installed, physically damaged or altered (either internally or
externally) or damaged from improper use or use in an unsuitable environment;

b) if it has been subjected to fire, water, generalized corrosion, biological infestations, or input voltage that creates

operating conditions beyond the maximum or minimum limits listed in the Xantrex product specifications

including high input voltage from generators and lightning strikes;
c) if repairs have been done to it other than by Xantrex or an Authorized Service Center;
d) if it is used as a component part of a product expressly warranted by another manufacturer; and
e) if its original identification (trade-mark, serial number) markings have been defaced, altered, or removed.

Exclusions

THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED BY XANTREX IN CONNECTION WITH YOUR
XANTREX PRODUCT AND IS, WHERE PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES, CONDITIONS,
GUARANTEES, REPRESENTATIONS, OBLIGATIONS AND LIABILITIES, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE IN
CONNECTION WITH THE PRODUCT, HOWEVER ARISING (WHETHER BY CONTRACT, TORT, NEGLIGENCE, PRINCIPLES OF
MANUFACTURER'S LIABILITY, OPERATION OF LAW, CONDUCT, STATEMENT OR OTHERWISE) INCLUDING WITHOUT
RESTRICTION ANY IMPLIED WARRANTY OR CONDITION OF QUALITY, MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT
REQUIRED UNDER APPLICABLE LAW TO APPLY TO THE PRODUCT SHALL, WHERE PERMITTED BY LAW, BE LIMITED IN
DURATION TO THE PERIOD STIPULATED UNDER THIS LIMITED WARRANTY.

IN NO EVENT WILL XANTREX BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES,
LOSSES, COSTS OR EXPENSES HOWEVER ARISING WHETHER IN CONTRACT OR TORT INCLUDING, WITHOUT RESTRICTION,
ANY ECONOMIC LOSSES OF ANY KIND, ANY LOSS OR DAMAGE TO PROPERTY, OR ANY DAMAGE OR INJURY ARISING FROM
OR AS A RESULT OF MISUSE OR ABUSE OR THE INCORRECT INSTALLATION, INTEGRATION OR OPERATION OF THE PRODUCT.

Limita tions on Ex clusion s

This Limited Warranty does not affect your rights as prescribed by law and as established in the Law on Warranties
for Consumer Goods (Spain) or the German Civil Code (“BGB”). In Germany, the legal provisions regarding
suspension or expiration (“Ablaufhemmung”), suspension (“Hemmung”) and recommencement of limitation periods
remains unaffected.

Some countries do not allow limitations or exclusions on implied warranties or on the duration of an implied warranty
or on the limitation or exclusion of incidental or consequential damages, so the above limitation(s) or exclusion(s)
may not apply to you.

For example, in Germany, the Exclusion above shall not apply in the case of mandatory liability, i.e. under the
German Product Liability Act (“Produkthaftungsgesetz”) or in the case of intent, gross negligence, and injury of life,
body or health, or breach of a condition which goes to the root of the contract (“wesentliche Vertragspflichten”).
However, claims for damages arising from a breach of a condition which goes to the root of the contract shall be
limited to the foreseeable damage which is intrinsic to the contract, unless caused by intent or gross negligence or
based on liability for injury of life, body or health. The Exclusion above in Germany also does not imply a change in
the burden of proof to your detriment.

WA–2 975-0253-01-01

Warranty and R eturn

Exclusion for Documentation

WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UNLESS SPECIFICALLY AGREED TO BY IT IN WRITING,
XANTREX:

(A) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
INFORMATION PROVIDED IN MANUALS OR OTHER DOCUMENTATION PROVIDED BY IT IN CONNECTION WITH THE
PRODUCT; AND

(B) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL,
DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION.

THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER'S RISK.

Warni ng: Limitations On Use

Please refer to your Owner's Guide for limitations on uses of the product. Specifically, please note that the Xantrex
Grid Tie Solar Inverter is not intended for use in connection with life support systems or other medical equipment or
devices and Xantrex makes no representation or warranty in connection with any use of the product for such
purposes.

Xantrex Technology Inc.
8999 Nelson Way
Burnaby, British Columbia
Canada
V5A 4B5

Return Material Authorization Policy

Before returning a product directly to Xantrex you must obtain a Return Material Authorization (RMA) number and
the correct factory “Ship To” address. Product shipments will be refused and returned at your expense if they are
unauthorized, returned without an RMA number clearly marked on the outside of the shipping box, or if they are
shipped to the wrong location.

When you contact Xantrex to obtain service, please have your instruction manual ready for reference and be prepared
to supply:

• The serial number of your product

• Information about the installation and use of the unit

• Information about the failure and/or reason for the return

• A copy of your dated proof of purchase

When you ship:

1. Package the unit safely, preferably using the original box and packing materials. Please ensure that your product
is shipped fully insured in the original packaging or equivalent. This warranty will not apply where the product is
damaged due to improper packaging.

2. Include the following:

• The RMA number supplied by Xantrex Technology, Inc. clearly marked on the outside of the box.

• A return address where the unit can be shipped. Post office boxes are not acceptable.

• A contact telephone number where you can be reached during work hours.

• A brief description of the problem.

3. Ship the unit prepaid to the address provided by your Xantrex customer service representative.

If you are returning a product to a Xantrex Authorized Service Center (ASC) A Xantrex return

material authorization (RMA) number is not required. However, you must contact the ASC prior to returning the
product or presenting the unit to verify any return procedures that may apply to that particular facility.

975-0253-01-01 WA–3

Warranty and Return

Information About Your System

As soon as you open your Xantrex Grid Tie Solar Inverter package, record the following information and be sure to
keep your proof of purchase.

Model Number
Serial Nu mb er
Purchased From
Purcha s e Date

If you need to contact Customer Service, please record the following details before calling. This information will help
our representatives give you better service.

Inverter Details

Type of installation (e.g. Residential/Commercial)
Length of time inverter has been installed
AC wiring size and length
DC wiring size and length
Description of fault m essages and/or indicators on

front panel

______________________________________________________________________

_________________________________
_________________________________
_________________________________
_________________________________

________________________
________________________
________________________
________________________

________________________

______________________________________________________________________

Description of problem

______________________________________________________________________
______________________________________________________________________
______________________________________________________________________

WA–4 975-0253-01-01

________________________

Warranty and R eturn

PV Details

Solar Panel Mount: Roof Pole Ground
Solar Panel Brand and Model:
Nominal Voltage Range: _____________ Vdc
Peak Open Circuit Voltage: _____________ Vdc
Nominal Current Ra ting: _____________ Adc
Maximum Current Rating: _____________ Adc
Solar T racker? Yes No
String #1:# of Panels: _____________ Series Parallel
String #2:# of Panels: _____________ Series Parallel
String #3:# of Panels: _____________ Series Parallel
String #4:# of Panels: _____________ Series Parallel

975-0253-01-01 WA–5

WA–6

Inde x

A

abbreviations and symbols iv
AC circuit breaker requirements 2–9
AC grounding requirements 2–7
AC output voltage ratings A–2
AC wiring instructions 3–5
acceptable wire sizes A–6
adjustable disconnect settings A–3

C

communication between multiple inverters 3–8
communications cabling 3–10

installing for multiple inverters 3–12
standard CAT 5 wiring 3–10

Customer Service

preparing to call WA–4

D

DC wiring instructions 3–3
derating chart A–4
dimensions 2–11, A–6
display accuracy A–6

E

efficiency chart A–5
electrical specifications A–2
error messages and solutions 6–4

grounding requirements 2–7
GT-Vie w 3–12
guidelines for matching PV array size to inverter input

2–7

H

humidity limits A–6

I

information about your system form WA– 4
installation

grounding requirements 2–7
location concerns 2–4
mounting 2–13
options 2–2
overview 2–10
planning issues 2–2
preparing for 2–9
PV array requirements 2–5
routing wires 2–8

inverter

features and options 1–3
installation 2–10
model number WA–4
purchase date WA–4
purpose 1–2
serial number WA–4

F

fault conditions and solutions 6–4
features and options 1–3
front panel display 1–3, 5–2

fault messages 5–7
normal operation messages 5–3
offline mode messages 5–5
reading messages 5–3
special messages 5–8
startup messages 5–3

G

general maintenance 6–3
ground clearance required for installation 2–4, 2–12
ground fault protection fuse 5–7

L

LEDs, See status LEDs
lightning protection 2–8

M

maintenance, general 6–3
maximum power point tracking, See MPPT
mechanical specifications A–6
messages, See front panel display
model number WA–4
mounting bracket

installing 2–12
on backing support 2–15
on poles or rails 2–14

mounting the inverter

clearance requirements 2–12

Index

on wallboard, siding or concrete 2–15
orientation 2–4
overview 2–11
preparation 2–11
single inverter 2–16
surfaces for 2–13
using poles or rails 2–14

MPPT

operational window 2–6
technology 1–3

multiple inverters

communication between 3–8
communications wiring 3–12
configuration 2–2
installation 3–7
messages in normal operation 5–5
messages in offline mode 5–6

O

operation

factors affecting performance 6–2
messages at startup 5–3
startup procedure 4–2

serial number WA–4
single inverter configuration 2–2
specifications

electrical A–2

mechanical A–6
standard features and options 1–3
standard test condition 6–2
startup procedure

monitor front panel display 5–2

overview 4–2
status LEDs

description 5–10

do not illuminate 6–4

red LED is on 6–4

T

temperature

affecting PV array performance 6–2

range for locating Xantrex GT Inverter 2–4
terminators, male network 3–9
thermal derating chart A–4
troubleshooting the GT Inverter 6–4

P

photovoltaic (PV) power 1–2
power derating A–6
preparing for installation 2–9
proof of purchase WA–4
purchase date WA–4
PV arrays

angle of the sun 6–2
effect of shade on performance 6–2
factory ratings 6–2
installation recommendations 2–5
matching size to inverter input 2–7
requirements 2–5
temperature affecting performance 6–2
types of modules 2–6
voltage requirements 2–6

R

RJ45 connector requirements 3–10
RJ45 ports

communication between inverters 3–9

RS-232 port 3–9, 3–12, 5–7

W

warranty

terms and conditions WA–1
weight A–6
wire stripping length, recommended 2–9
wiring

acceptable wire sizes A–6

information 2–9

preparation for 2–9

PV array to Xantrex GT Inverter 3–3

routing wires 2–8

X

Xanbus technology 3–8
Xantrex web site v

S

safety instructions vii

IX–2 975-0253-01-01

Xantrex Technology Inc.

34 93 470 5330 Te l e phone
34 93 473 6093 Fa x
[e-mail]
www.xantrex.com

975-0253-01-01

Printed in China