Advanced Enervista 469 Setup Features; Triggered Events; Waveform Capture (Trace Memory) - GE 469 Instruction Manual

469
Motor Management Relay

Triggered Events

Waveform Capture
(Trace Memory)
4–24

Advanced EnerVista 469 Setup Features

While the interface is in either on-line or off-line mode, data generated by triggered
specified parameters can be viewed and analyzed via one of the following:
• Event Recorder: The event recorder captures contextual data associated with
the last 256 events, listed in chronological order from most recent to the oldest.
• Oscillography: The oscillography waveform traces provide a visual display of
power system data captured during specific triggered events.
The EnerVista 469 Setup software can be used to capture waveforms (or view trace
memory) from the 469 relay at the instance of a trip. A maximum of 128 cycles can
be captured and the trigger point can be adjusted to anywhere within the set cycles.
A maximum of 16 traces can be buffered (stored) with the buffer/cycle trade-off.
The following waveforms can be captured:
• Phase A, B, and C currents (I
• Differential A, B, and C currents (I
• Ground currents (I )
g
• Phase A-N, B-N, and C-N voltages (V
• Phase A-B and B-C (V
ab
1. With EnerVista 469 Setup running and communications established, select the
Actual > Waveform Capture menu item to open the waveform capture setup
window:
Files to be saved or viewed
Click on Trigger Waveform to trigger a waveform capture.
The waveform file numbering starts with the number zero in the 469; therefore,
the maximum trigger number will always be one less then the total number
triggers available.
2. 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 CSV (comma delimited values) file, which can be viewed
and manipulated with compatible third-party software. To view a previously
saved file, click the Open button and select the corresponding CSV file.
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Advanced EnerVista 469 Setup Features
, I , and I )
a b c
, I , and I
diffa diffb diffc
, V , and V
an bn cn
and V ) for open-delta connections
bc
Number of available files
Save waveform to a file
)
) for wye connections
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