GE MiCOM P40 Agile Technical Manual page 505

P543i/P545i
Setting
MaxCh1 Tx-RxTime
MaxCh2 Tx-RxTime
GPS Fail Timer
GPS Trans Fail
GPS Trans Count
GPS Trans Timer
P54x1i-TM-EN-1
When Current Diff is enabled and if GPS Sync is not disabled, the absolute difference between the Transmission
and Reception propagation delay on channel 1 is calculated. The maximum value is displayed in the
MEASUREMENTS 4 column. The value is compared against the MaxCh1 Tx-RxTime setting. If the setting is
exceeded, an alarm, MaxCh1 Tx-RxTime DDB is raised.
When Current Diff is enabled and if GPS Sync is not disabled, if channel 2 is used, the absolute difference
between the Transmission and Reception propagation delay is calculated. The maximum value is displayed in
the MEASUREMENTS 4 column. The value is compared against the MaxCh2 Tx-RxTime setting. If the setting is
exceeded, an alarm, MaxCh2 Tx-RxTime DDB is raised.
This sets the time delay after which the GPS Alarm signal is asserted following a loss of GPS signal or by
initiation by the GPS transient fail alarm function described by the setting GPS Trans Fail.
To enable (activate) or disable (turn off) the transient GPS Fail alarm function described by the GPS Trans Count
and GPS Trans Timer settings.
Sets the count for the number of failed GPS signals which must be exceeded in the GPS Trans Timer setting
window after which the GPS Fail Timer is initiated.
Sets the rolling time window in which the GPS Trans Count must be exceeded after which the GPS Fail Timer is
initiated.
Chapter 18 - Supervision
Description.
469