Alstom MiCOM P54 Series - 2.3.8 Communications fail mode; 2.3.9 MiCOM P594 global positioning system (GPS) synchronizing module

Operation P54x/EN OP/La4
MiCOM P543, P544, P545 & P546 (OP) 5-123
OP
2.3.8 Communications fail mode
The Communications Fail Mode is used to select the channel(s) responsible for raising the
communication alarm when configured for dual redundant communications. Three options
are available: ‘Ch 1 Failure’, ‘Ch 2 Failure’, Ch1 or Ch 2 Fail’ and Ch1 and Ch 2 Fail’. If ‘Ch
1 Failure’ is selected, the communication alarm will only be raised if channel 1 has failed. If
‘Ch 2 Failure’ is selected, the communication alarm will only be raised if channel 2 has failed.
If ‘Ch 1 or Ch 2 Fail’ is selected, the communication alarm will be raised if either channel has
failed.
2.3.9 MiCOM P594 global positioning system (GPS) synchronizing module
MiCOM P54x
Current Differential relays can use a satellite-derived one pulse per second
synchronizing signal via a MiCOM P594 GPS Module.
A separate technical guide (P594 EN M) is available in support of this device, and should be
consulted for operational details.