Ac Disconnect And Dc Disconnect Switch; Figure 1-10 Ac And Dc Disconnect Switches - Xantrex GT100 Series Planning And Installation Manual

AC Disconnect and DC Disconnect Switch

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
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.
153379
AC
Disconnect
switch
(CB1)
AC Interface

Figure 1-10 AC and DC Disconnect Switches

This manual for use by qualified installers only
Operator Interface Controls
DC
Disconnect
switch (S1)
DC Interface
ON
1–13