Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 69/108
4.5.11.1 Selection Menu [79] EXTERNAL CB FAILURE
Ext CB Fail ?
Yes
Selection of external CB failure alarm function. A
binary status signal from the CB sent to the logic input
CB FLT can be assigned to Autoreclose. Setting choice:
No, Yes
If the user selects Yes the following window is shown:
If the user selects No, next window will show the
submenu Ext Block ?.
Ext CB Fail Time
1.00 s
Displays the external CB failure trip threshold.
The setting range is from 0 to 600 s, in steps of 10ms.
4.5.11.2 Selection Menu [79] EXTERNAL BLOCKING
Ext Block ?
Yes
Selection of external blocking function. A binary signal
sent to a logic input (Block_79) can be used to block
the autoreclose function.
Setting choice: No, Yes
4.5.11.3 Selection Menu [79] EXTERNAL STARTING (I> and Ie>)
Aux1 (I>)
No
Selection of dedicated logic input Aux 1 to start
autoreclose function, if a connected overcurrent
protection trip signal is identified.
Setting choice: No, Yes
Note : The counter "Total recloses" (Measurements
menu) and the counter "Phase cycles" ([79] menu) will
be incremented.
Aux2 (Ie>)
No
Selection of dedicated logic input Aux 2 to start
autoreclose function, if a connected earth overcurrent
protection trip signal is identified.
Setting choice: No, Yes
4.5.11.4 Selection Menu [79] Dead Time and Reclaim Time
Dead Time
tD1 5.00 s
Displays setting value of the first cycle dead time (tD1)
for the autoreclose function.
The setting range is from 0.01 to 300 s, in steps of
10ms.
Dead Time
tD2 10.00 s
Displays setting value of the second cycle dead time
(tD2) for the autoreclose function.
The setting range is from 0.01 to 300 s, in steps of
10ms.
Dead Time
tD3 180.00 s
Displays setting value of the third cycle dead time (tD3)
for the autoreclose function.
The setting range is from 0.01 to 600 s, in steps of
10ms.
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