GE 745 Instruction Manual page 85

CHAPTER 4: INTERFACES
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
The waveform file numbering starts with the number zero in the 745; therefore, the
maximum trigger number will always be one less then the total number triggers available.
 Click on the Save to File button to save the selected waveform to the
local PC.
A new window will appear requesting for file name and path.
The file is saved as a COMTRADE file, with the extension 'CFG'. In addition to the COMTRADE
file, two other files are saved. One is a CSV (comma delimited values) file, which can be
viewed and manipulated with compatible third-party software. The other file is a DAT File,
required by the COMTRADE file for proper display of waveforms.
 To view a previously saved COMTRADE file, click the Open button
and select the corresponding COMTRADE file.
 To view the captured waveforms, click the Launch Viewer button. A
detailed waveform capture window will appear as shown below:
FIGURE 4–6: Waveform capture window attributes
The red vertical line indicates the trigger point of the relay.
ADVANCED ENERVISTA 745 SETUP FEATURES
4–31