Update Documentation P341/EN AD/F43
MiCOM P341
(AD) -33
In the default PSL, Relay 3 is still mapped to the “Any Trip” DDB and the “Fault REC TRIG”
DDB signals. If the user wants to make use of the CB maintenance features, CB failure
function etc. they should map the output contact(s) assigned for tripping the monitored circuit
breaker to the “Any Trip” DDB. The output contact(s) assigned for tripping the monitored
circuit breaker should also be connected to the fault record trigger “Fault REC TRIG” DDB
623 for fault record triggering.
Note, where relay 3 or any other contact is used to initiate the “Any Trip” signal the contact
should not be set to latched as the “Any Trip” is used to trigger (on pick-up) and reset (on
drop-off) the fault recorder window. So if the “Any Trip” is latched the fault recording window
never resets and so you won’t see a fault record on the relay front display as the relay thinks
the fault is still present.
The default setting for relay 3 is a dwell time of 100ms, a dwell is the minimum time the
contact will be ON and is used for trip functions to ensure a good quality trip signal is
obtained. As an example of a dwell timer, a dwell of 100ms means that if the initiating signal
is ON for 10ms then the output contact is ON for 100ms and if the initiating signal is ON for
200ms then the output contact is ON for 200ms.
4.19 Date and time
Displays the date and time as well as the battery condition.
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
DATE AND TIME
Date/Time Data
Displays the relay’s current date and time.
IRIG-B Sync. Disabled Disabled or Enabled N/A
Enables or disables the IRIG-B time synchronization.
IRIG-B Status Data
Card not fitted/Card failed/
Signal healthy/No signal
N/A
Displays the status of IRIG-B.
Battery Status Dead or Healthy
Displays whether the battery is healthy or not.
Battery Alarm Enabled Disabled or Enabled N/A
Enables or disables battery alarm. The battery alarm needs to be disabled when a battery
is removed or not used.
SNTP Status Data
Disabled/Trying Server1/
Trying Server 2/Server 1
OK/Server 2 OK/No
response/No Valid Clock
N/A
Displays information about the SNTP time synchronization status
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