Advanced enerVista 745 Setup Features
745
Transformer Management Relay
Inter
faces
http://www.GEindustrial.com/multilin
4–23
GE Multilin
Advanced enerVista 745 Setup Features
Triggered Events
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 128 events, listed in chronological order from most recent to the oldest.
•
Oscillography
: The oscillography waveform traces and digital states provide a
visual display of power system and relay operation data captured during specific
triggered events.
Waveform Capture
(Trace Memory)
The enerVista 745 Setup software can be used to capture waveforms (or view trace
memory) from the 745 relay at the instance of a trip. A maximum of 64 cycles can
be captured and the trigger point can be adjusted to anywhere within the set cycles.
A maximum of 16 waveforms can be buffered (stored) with the buffer/cycle trade-
off.
The following waveforms can be captured:
•
Phase A, B, and C currents (
I
a
,
I
b
, and
I
c
)
•
Differential A, B, and C currents (
I
diffa
,
I
diffb
, and
I
diffc
)
•
Ground currents (
I
g
)
•
Phase A-N, B-N, and C-N voltages (
V
a
,
V
b
, and
V
c
)
•
Digital data for output relays and contact input states
1. With enerVista 745 Setup running and communications established, select the
Actual > Waveform Capture
menu item to open the waveform capture setup
window:
2. Click on
Trigger Waveform
to trigger a waveform capture.
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.
3. 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.
Number of available files
Files to be saved or viewed
Save waveform to a file
Summary of Contents for Multilin 745
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