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Operation
2–26
153378
Energize Procedure (Startup)
To start up the GT100:
1. Remove any lockout devices from the Utility connection circuit breaker and
PV disconnect switch.
2. Close the Utility connection circuit breaker.
3. Close the PV Array disconnect (if installed).
4. Close the AC Disconnect (CB1).
5. Close the DC Disconnect Switch (S1).
6. Turn the
ON
/
OFF
switch (S3) to the
ON
position.
After a 15 second initialization period, the GT100 will automatically transition to
‘Waking Up’, given the PV voltage is greater than the PV V Start set point.
De-Energize/Isolation Procedure (Shutdown)
The following procedure should be followed to de-energize the GT100 for
maintenance.
Lockout and Tag
Safety requirements mandate that this equipment not be serviced while energized.
Power sources for the GT100 must be locked-out and tagged prior to servicing. A
padlock and tag should be installed on each energy source prior to servicing.
The GT100 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
GT100 using the following procedure.
1. Turn the GT100 main ON/OFF switch (S3) to the OFF position. This stops
the inverter from exporting power to the AC utility grid.
2. Open, lockout, and tag the incoming power at the utility main circuit breaker.
3. Open, lockout, and tag the AC Disconnect (CB1) on the left side of the
GT100. See Figure 1-8 on page 1–11 for the location of the AC Disconnect.
4. Open, lockout, and tag the incoming power at the PV array disconnect
(if installed.) If a PV array disconnect is not installed, see the
following WARNING.
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. Once all sources of input are
identified and isolated, allow five minutes for all capacitors within the main enclosure to
completely discharge before proceeding.
Summary of Contents for GT100-208
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