Preventative Maintenance
5–2
153378
Maintenance Safety
Prior to following any Maintenance Procedures, follow the System Shutdown and
Lock-out and Tag procedure.
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 (De-energize/Isolation Procedure)
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.
Each energy source should have a padlock and tag 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 door of the
GT100 enclosure. See Figure 1-10 on page 1–13 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.
5. Open, lockout, and tag the DC Disconnect Switch (S1) on the right door of the
GT100 enclosure. See Figure 1-10 on page 1–13 for the location of the DC
Disconnect.
WARNING: Shock Hazard
In order to remove all sources of voltage from the GT100, 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 GT100. 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 “Lockout and Tag (De-energize/Isolation Procedure)”
procedure on page 2 to de-energize the GT100.
Содержание GT100-208
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