Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 95/108
CB Open Alarm ?
No
Selection of the monitor function for maximum count of
CB operations.
Setting choice: Yes, No
If Yes is selected, the following window is displayed:
If No is selected, the next window is SAmps(n).
CB Open NB
0
Displays alarm threshold for CB open count.
Setting range is from 0 to 50000, in steps of 1.
SAmps(n) ?
No
Selection of the monitoring function that continuously
sums the current (in Amps or square Amps) interrupted
by the CB.
Setting choice: Yes, No
If Yes is selected, the following window is displayed:
If No is selected, the next window is tOpen Pulse.
SAmps(n)
0 E6
Displays alarm threshold for the summation of the
current (in Amps or square Amps) interrupted by the
CB.
Setting range is from 0 to 4000 E6 A (or A²), in steps of
1 E6. (E6 = 106)
n
1
Displays the exponent for the summation (I A or I² A²).
Setting choice for n: 1or 2
tOpen Pulse
1.00 s
Displays and sets the tripping pulse time.
Setting range is from 0.1 to 5 s, in steps of 10 ms.
tClose Pulse
1.00 s
Displays and sets the closing pulse time. This time is
also associated to the during of the closing pulse time
of the autoreclose function after dead time in case of
lacking of the 52a signal the closing control stays for
the setting value.
Setting range is from 0.1 to 5 s, in steps of 10 ms.
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