Installation manual

Safety
viii 153396 Revision D
This manual is for use by qualified installers only
WARNING: Multiple sources with risk of electric shock,
explosion, and arc flash
In order to remove all sources of voltage from the Xantrex GT250, 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 Xantrex GT250. Follow the “Lock-out and Tag-
out (De-energize/Isolation Procedure)” on page xiii to de-energize the Xantrex
GT250 and test all circuits to verify that the inverter is fully de-energized, before
servicing or maintenance. Opening the AC and DC disconnect switches on the
inverter does not remove all power from the inverter. 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.
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.
WARNING: Amputation hazard
The inverters contain fans with hazardous rotating parts. Keep hands away from
the fans while the inverter is energized.
WARNING: Limitations on use
The Xantrex GT250 inverters are not intended for use in connection with life
support systems or other medical equipment or devices. The Xantrex GT250 may
only be used in grid-interconnected PV systems. They are not suitable for any
other application areas.