Installation manual

Introduction
1–18 153396 Revision D
This manual is for use by qualified installers only
Oscillography
The Xantrex GT250 includes a graphic data analysis tool known as
Oscillography. The inverter firmware continuously records, in the CCU2 non-
volatile memory, 500 samples of data at 1 millisecond intervals. Of these, 250
samples are taken right before a fault occurs and 250 samples are taken after the
fault. Once a fault occurs and the 250 samples are logged, the log stops and
goes into DONE status. The log will start recording again as soon as the fault is
cleared. Oscillography requires the use of a PC connection using the Xantrex GT
View Graphic User Interface (GUI) software or via the RS485/Modbus
connection.
The following is the list of parameters which instant values shall be stored in the
oscillography records:
• Vab - Grid voltage phase A to phase B
• Vbc - Grid voltage phase B to phase C
• Vca - Grid voltage phase C to phase A
• Ia - Grid current phase A, left matrix.
• Ib - Grid current phase B, left matrix.
• Ic - Grid current phase C, left matrix.
• Ia - Grid current phase A, right matrix.
• Ib - Grid current phase B, right matrix.
• Ic - Grid current phase C, right matrix.
• Grid Hz - Grid frequency
• DC_V - PV array voltage
• DC_I - PV array current
• Fault - hexadecimal code of the fault
Optional Equipment
The following options are available for purchase for use with the Xantrex GT250
to enhance its capability. Contact a Schneider Electric distributor for further
information on installation options.
Communication Modems
Schneider Electric offers modems that can be connected to the RS232 serial port
for remote monitoring of the inverter. Please check with Schneider Electric on
available modem types.
The remote user has the ability to control and monitor the status of the inverter
through this connection.