Princeton GTIB-30, Installation Manual

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GTIB-30 Installation Manual-UL
20 4411-0011, Rev 2.0
2.1.1.2 Load Port (Optional)
The load port is a four-wire AC port with three phases and a neutral line. This port is
used to connect local loads to the GTIB-30. For example, by connecting to this port,
the system may limit the loading on the utility supply (peak load shaving) by
supplementing power from energy stored in batteries connected to the DC Port.
2.1.1.3 Grid (Source) Port
The grid port is a four-wire AC port with three phases and a neutral line. This port
can be connected to the utility grid. If no utility grid is available, suitable AC
generators can also be connected to this port.
Figure 1: Symbolic single line diagram of GTIB-30.
2.1.2 Isolation Transformer
The GTIB-30 comes equipped with an internal isolation transformer. The isolation
transformer provides electrical isolation between the DC and AC ports. The isolation
transformer does not provide electrical isolation between the two AC ports if the load
port option is installed.
Figure 2: Symbolic representation of the GTIB-30 with isolation transformer.