Installation manual

Safety
152936 ix
This manual is for use by qualified personnel only.
Operational Safety Procedures
Never work alone when servicing this equipment. A team of two is required until
the equipment is properly de-energized, locked-out and tagged, and verified de-
energized with a meter.
Thoroughly inspect the equipment prior to energizing. Verify that no tools or
equipment have inadvertently been left behind.
Lockout and Tag
Safety requirements mandate that this equipment not be serviced while
energized. Power sources for the Xantrex GT250 E must be locked-out and
tagged prior to servicing. A padlock and tag should be installed on each energy
source prior to servicing.
The Xantrex GT250 E can be energized from both the AC source and the DC
source. To ensure that the inverter is de-energized prior to servicing, lockout
and tag the Xantrex GT250 E using the following procedure.
1. Open, lockout, and tag the incoming power at the utility main circuit breaker.
2. Open, lockout, and tag the AC Disconnect Switch (-Q1) on the AC Interface
Enclosure (-H0). See Figure 1-4 on page 1–6 for the location of the AC
Disconnect Switch.
3. Open, lockout, and tag the DC Disconnect Switch (-Q11) on the DC Interface
Enclosure (-H2). See Figure 1-4 on page 1–6 for the location of the DC
Disconnect Switch.
4. Using a confirmed, accurate meter, verify all power to the inverter is de-
energized. A confirmed, accurate meter must be verified on a known voltage
before use. Ensure that all incoming energy sources are de-energized by
checking the following locations.
a) AC Utility Terminals: (Bottom of L1, L2, L3 and PE)
See Figure 3-9 on page 3–11 and Figure 3-10 on page 3–11 for the
location of these terminals.
b) PV Terminals: (PV+ and PV-)
See Figure 3-11 on page 3–12 for the location of these terminals.
WARNING: Shock Hazard
Review the system schematic for the installation to verify that all available energy
sources are de-energized. DC bus voltage may also be present. Be sure to wait
the full 20 minutes to allow the capacitors to discharge completely. Schematics
are located inside the front door of the unit.