GE RPV311, Technical Manual

Page: 82 / 295

Chapter 4
– Configuration
RPV311
82 RPV311-TM-EN-7
B The T
ERMINAL
text field allows user to enter the terminal of this recorder.
C The T
RIGGER LOGIC
field contains all the thresholds created. The logic equation uses
AND and OR logic operators over previously defined thresholds. Initially, all preset
thresholds are displayed as implicit OR operators, one per line.
To enable thresholds individually, click on the threshold and select Enable;
To disable discarded thresholds individually, click on the threshold and select Disable;
To break or remove complex thresholds, click on the threshold and select Cut last;
To create equations with AND operators, follow the procedures below:
 Click on the threshold and select Cut last;
 Click on the threshold to which is desired to add the previously selected
threshold and then select the threshold to be added.
D Selecting the R
ECEIVE
E
THERNET CROSS
-
TRIGGER
or S
END
E
THERNET CROSS
-
TRIGGER
check
box enables these features. It allows the start of the recording of an exceeded
threshold by Ethernet cross-trigger.
Note:
The maximum number of RA333 that can be connected to the RPV311 is 4.
The RA333 module has to be connected to the RPV311 processing module before its
initianilzaton. Otherwise a log message will tell the user to reboot the device.
13 Recommended Sources of Trigger
In order to register the beginning of the fault’s traveling wave it is important to use
instantaneous protections trips (or starts) as digital input for trigger, for example: 50,
21Z1, 67I, 87 etc. In addition, we recommend the following thresholds:
Threshold Limit
Phase Overcurrent 1,2 pu
Neutral Overcurrent 0,2 pu
Current Negative Sequence 0,15 pu
Phase Undervoltage 0,85 pu
Neutral Overvoltage 0,10 pu
The limits values can be adjusted depending on the needs of each installation using
real events as basis
14 Steady-State