Specifications

Safety
viii 975-0581-01-01
This manual is for use by qualified personnel only
Lock-out and Tag-out
Safety requirements mandate that this equipment not be serviced while
energized. All power sources for the Xantrex inverter must be locked-out and
tagged-out prior to servicing. A padlock and tag should be installed on the
disconnect device for each energy source prior to servicing.
To ensure that the inverter is fully de-energized prior to servicing, and cannot be
re-energized by other workers, a lock-out and tag-out procedure must be followed
for each source supplying the inverter. Refer to
Figure i and Figure ii for the
locations of the external switches, internal guards, and internal disconnect
switches referred to in the following procedure.
The PV circuit supplying the internal DC disconnect switch and the AC output circuit
on the output of the internal AC disconnect switch remain live when the internal
switches are opened. Those circuits are located behind guards in the DC interface
enclosure and in the lower part of the AC interface enclosure. If the installation,
service, or maintenance task to be performed requires removal of those guards, then
external AC and DC disconnecting devices must also be opened, locked-out, and
tagged-out. The following procedure contains steps that must be followed in all
cases, and additional steps that only need to be followed if removing the guards.
Lock-out and tag-out steps required in all cases:
1. Ensure the inverter is not operating, by turning the 3 (stand-by/power-on)
switch (called
ON/OFF on older models) to the 1 (stand-by) position, and by
pushing in the emergency stop button. See Figure i.
2. Open, lock-out, and tag-out the AC disconnect switch (-Q1) inside the AC
interface enclosure (+H0). See Figure ii for the location of the switch.
3. Open, lock-out, and tag-out the DC disconnect switch (-Q11) inside the DC
interface enclosure (+H2). See Figure ii for the location of the switch.
4. Shut off the Xantrex UPS (for any Xantrex GT500 E & Xantrex GT630 E
equipped with a UPS) by switching off the
ON/OFF switch on the UPS and by
switching off double pole breaker -F5 in the control enclosure (+H1). See
Figure ii for the location of the breaker.
5. Open, lock-out, and tag-out the auxiliary AC input source at its external
disconnect switch provided as part of the installation.
WARNING: Multiple sources with risk of electric shock,
explosion, and arc flash
The Xantrex inverter is energized from the PV array, from the AC grid, and from an
auxiliary AC source (backed up with a Xantrex UPS for Xantrex GT500 E &
Xantrex GT630 E units with low-voltage ride-through capability). All 3 sources
(4 including a Xantrex UPS) must be disconnected, locked-out and tagged-out,
and all circuits tested to verify that the inverter is fully de-energized, according to
the procedure on page viii, before servicing or maintenance. Opening the AC
and DC disconnect switches on the inverter does not remove all power from the
inverter. Wait 20 minutes for the DC bus capacitors, located within the cabinet, to
discharge after removing power.