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.
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