Xantrex GT100-208 User manual

Xantrex™GT100
Grid-TiedPhotovoltaic
Inverter
Operation and Maintenance Manual
GT100-208
GT100-480

Xantrex™GT100 Grid-Tied
Photovoltaic Inverter
Operation and Maintenance Manual

About Xantrex
Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products
ranging from small mobile units to 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 and Smart choice for power are trademarks of Xantrex International, registered in the United States and
other countries.
Notice of Copyright
Copyright © September 2008 Xantrex Technology Inc. No part of this document may be reproduced in any form or
disclosed to third parties without the express written consent of:
Xantrex Technology Inc.
161-G South Vasco Road
Livermore, California
USA 94551
Exclusion for Documentation
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 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’SRISK; AND
(C)REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN
TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED
XANTREX CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED AT
WWW.XANTREX.COM.
Date and Revision
September 2008 Revision B
Manual Part Number
153378
Contact Information
Telephone: [phone] (toll free North America)
1 408 987 6030 (direct)
Fax: [phone] (toll free North America)
Email: [email protected]
Web: www.xantrex.com

153378 iii
About This Manual
Purpose
The purpose of this Operation and Maintenance Manual is to provide explanations
and procedures for operating, maintaining, and troubleshooting the GT100 Grid-
Tied Photovoltaic Inverter. Installation instructions are available in the GT100
Grid-Tied Photovoltaic Inverter Planning and Installation Manual (Part
#:153379).
Scope
This Manual provides safety guidelines and information about operating and
troubleshooting the unit.
Audience
This Manual is intended for anyone who needs to operate the GT100 Grid-Tied
Photovoltaic Inverter. Operators must be familiar with all the safety regulations
pertaining to operating high-voltage equipment as dictated by local code.
Operators must also have a complete understanding of this equipment’s features
and functions. Do not to use this product unless it has been installed by a qualified
installer in accordance with the GT100 Grid-Tied Photovoltaic Inverter Planning
and Installation Manual (Part #:153379).
Organization
This Manual is organized into five chapters and two appendices.
Chapter 1, “Introduction” contains information about the features and functions of
the GT100 Grid-Tied Photovoltaic Inverter.
Chapter 2, “Operation” contains information on the basic operation of the GT100
Grid-Tied Photovoltaic Inverter.
Chapter 3, “Commissioning” contains information on safely commissioning the
GT100 Grid-Tied Photovoltaic Inverter.
Chapter 4, “Troubleshooting” contains information and procedures for
troubleshooting the GT100 Grid-Tied Photovoltaic Inverter. It provides
descriptions of common situations and errors that may occur and provides
possible solutions for resolving fault conditions. It also provides instructions for
clearing faults manually, if required.
Chapter 5, “Preventative Maintenance” contains information and procedures for
performing preventative maintenance on the GT100 Grid-Tied Photovoltaic
Inverter.
Appendix A provides the environmental and electrical specifications for the
GT100 Grid-Tied Photovoltaic Inverter.
Appendix B contains the Commissioning Test Record for the GT100 Grid-Tied
Photovoltaic Inverter.

About This Manual
iv 153378
Conventions Used
The following conventions are used in this guide.
GT100 Models
This Operation and Maintenance Manual contains information for four models of
the GT100 Grid-Tied Photovoltaic Inverter.
Two of the models are designed to operate with a 208 Vac utility input; one
configured for a negative grounded PV array (GT100-208-NG), and the other
configured for a positive grounded PV array (GT100-208-PG).
•ThemodelGT100-208-NG Grid-Tied Photovoltaic Inverter (208 Vac input,
negative grounded) will be referred to as the GT100-208-NG when it is being
referenced individually.
•ThemodelGT100-208-PG Grid-Tied Photovoltaic Inverter (208 Vac input,
positive grounded) will be referred to as the GT100-208-PG when it is being
referenced individually.
Additionally, two of the models are designed to operate with a 480 Vac utility
input; one configured for a negative grounded PV array (GT100-480-NG), and the
other configured for a positive grounded PV array (GT100-480-PG).
•ThemodelGT100-480-NG Grid-Tied Photovoltaic Inverter (480 Vac input,
negative grounded) will be referred to as the GT100-480-NG when it is being
referenced individually.
•ThemodelGT100-480-PG Grid-Tied Photovoltaic Inverter (480 Vac input,
positive grounded) will be referred to as the GT100-480-PG when it is being
referenced individually.
When all models are being referenced together, they will be referred to as
the GT100.
WARNING
Warnings identify conditions or practices 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: These notes describe things which are important for you to know, but not as
serious as a caution or warning.

About This Manual
153378 v
Abbreviations and Acronyms
Related Information
You can find more information about Xantrex Technology Inc. as well as its
products and services at www.xantrex.com.
ANSI American National Standards Institute
CCU2 Converter Control Unit 2
CFM Cubic Feet per Minute
CW Clockwise
DSP Digital Signal Processor
GUI Graphical User Interface
IEEE Institute of Electrical and Electronics Engineers
IGBT Insulated Gate Bipolar Transistor
kcmil 1000 circular mils
LM Liter per Minute
NFPA National Fire Protection Association
PSL Phase-Shift Loop
PV Photovoltaic
UFCU Universal Frontpanel Control Unit
VFD Vacuum Fluorescent Display

vi

153378 vii
Important Safety Instructions
SAVE THESE INSTRUCTIONS - DO NOT DISCARD
This manual contains important safety instructions for the GT100 Grid-Tied
Photovoltaic Inverter that must be followed during installation and maintenance
procedures.
WARNING: Shock Hazard
Read and keep this Operation and Maintenance Manual for future reference.
Before operating and maintaining the GT100, read all instructions, cautionary markings,
and all other appropriate sections of this manual. Failure to adhere to these warnings could
result in severe shock or possible death. Exercise extreme caution at all times to prevent
accidents.
WARNING: Shock Hazard
• The GT100 enclosure contains exposed high voltage conductors.
• The enclosure doors should remain closed with the latches tightened, except during
installation, maintenance or testing.
• These instructions are for use by qualified personnel who meet all local and
governmental code requirements for licensing and training for the installation of
Electrical Power Systems with AC and DC voltage to 600 volts.
• To reduce the risk of electric shock, do not perform any servicing other than that
specified in the installation instructions unless you are qualified to do so.
• Do not open the cabinet doors if extreme moisture is present (rain or heavy dew).
WARNING: Lethal Voltage
In order to remove all sources of voltage from the GT100, the incoming power must be de-
energized at the source. This may be done at the main utility circuit breaker, the PV array
disconnect, and by opening the AC Disconnect and the DC Disconnect Switch on the
GT100. Review the system configuration to determine all of the possible sources of
energy. In addition, allow five minutes for the DC bus capacitors to discharge after
removing power. Follow the “Lockout and Tag (De-energize/Isolation Procedure)”
procedure on page xii to de-energize the GT100.
WARNING: Shock hazard
If a ground fault has occurred, there may be potential between TB4 and GND. The
normally grounded pole may be energized and ungrounded.

Safety
viii 153378
Risks
WARNING: Shock Hazard
The DC bus capacitors within the GT100 can still be energized for a maximum of five
minutes after being disconnected. Open doors only after the GT100 has been disabled (S3)
and the capacitor bank discharge time has expired. Verify that the capacitors are no longer
energized (DC voltage) including terminals TB3 and TB4.
WARNING: Explosion Hazard
The IGBT module may explode in the event of a major malfunction.The GT100 enclosure
doors should remain closed with the latches tightened, except during maintenance or
testing.
WARNING: Crush Hazard
The inverters have a specific balance point that correlates to their center of gravity and can
fall over. Be very careful when moving the GT100.
WARNING: Amputation Hazard
The inverters contain integrated ventilators including rotating ventilator wheels. Do not
place fingers in ventilator.
WARNING: Burn Hazard
Inverters contain components that become hot during normal operation. Do not touch.
CAUTION
The GT100 incorporates an air supply and exhaust air area, which must remain
unobstructed. The device can overheat and be destroyed if the installation instructions are
not adhered to.
CAUTION
Sensitive electronics inside the GT100 can be destroyed when touched and when
electrostatically charged. Discharge via earth potential before touching and wear
appropriate protective gear.
CAUTION
No connections or disconnections are to be made at the terminal strips or internal
connectors during operation. Turn the unit off before performing any terminal work; wait
five minutes for the capacitors to discharge and recheck to ensure internal components are
no longer energized.