Operator Interface Controls
153378
1–13
AC Disconnect and DC Disconnect Switches
Both enclosure doors of the GT100 are equipped with lockout hasps for personnel
safety. The enclosure doors should not be opened while the GT100
is operating.
The switch handles and shafts provide a mechanical door interlock for both the
AC and DC Interface sections. The doors cannot be opened when the switches are
in the
ON
position.
Although the Main ON/OFF switch (S3) is recommended for an orderly
shutdown, the DC Disconnect switch is equipped with an auxiliary contact block
which enables the switch to be used as a load break DC disconnect. In the event
the DC Disconnect switch is opened while the GT100
is processing power from
the PV array, the early-break contact block will signal the CCU2 (Converter
Control Unit) to stop processing power prior to opening the DC Disconnect
switch.
Additionally, opening the DC Disconnect switch will cause the GT100 to execute
an immediate orderly shutdown, open both the main AC and DC contactors, and
report a PV disconnect fault on the VFD of the UFCU.
Both GT100 enclosure doors must be closed and locked during normal operation.
Figure 1-10
AC and DC Disconnect Switches
AC Disconnect
switch (CB1)
AC Interface
DC Disconnect
switch (S1)
DC Interface
Содержание GT100-208
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