Installation manual

Verification
4–2 153396 Revision D
This manual is for use by qualified installers only
Verification Procedure Summary
The following procedures are intended to verify correct installation and proper
wiring of the Xantrex GT250. Prior to performing the following verification steps
on the Xantrex GT250, review all safety requirements and procedures outlined in
this manual and on any cautionary markings on the components within the
system.
Inspect the following items prior to completion of the installation:
1. Visually inspect all the mechanical connections. This would include both
electrical conduit fittings, as well as enclosure anchoring and seismic
bracing if required.
2. Visually inspect the electrical connections and verify proper tightness of
all terminations.
3. Visually inspect the Isolation Transformer Wye/Wye connections and ensure
the transformer neutral connection is left disconnected.
4. Perform corrective actions if required.
WARNING: Electrocution Hazard
This chapter describes specific steps to ensure the installation of the Xantrex
GT250 Grid-Tied Photovoltaic Inverter is correct and complete. Failure to adhere
to these warnings could result in severe shock or possible death. Exercise
extreme caution at all times to prevent accidents. These installation instructions
are for use by those familiar and skilled with high voltage procedures.
WARNING: Shock Hazard
• The Xantrex GT250 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.
• 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 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. 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 “Lock-out and Tag-out (De-energize/Isolation Procedure)” procedure on
page xiii to de-energize the Xantrex GT250.