Alstom MiCOM P127 - Page 31

Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 29/108
I1
600.00 A
Displays the positive sequence component.
I2
0.00 A
Displays the negative sequence component.
RATIO I2/I1
0 %
Displays the ratio of I2/I1. This derived measurement is
used by the Broken Conductor detection function.
(Automat. Ctrl menu)
UN
3.15 V
Displays the earth voltage taking in account the earth
VT connection mode and ratio (General Options and
Transfo. Ratio submenu).
I N – fn
CLR=[C] 0.00 A
Displays the earth current I N (true RMS value) minus
the earth current value at the fundamental frequency
(value of the harmonic).
THERMAL STATUS
CLR = [C] 0 %
Displays the % thermal state based on true RMS current
phase values.
To clear the % values, press 0.
MAX & AVERAGE
CLR = [C]
Allows the user to clear the maximum (peak) and
average (rolling) memorised values of the current.
To clear these values, press 0.
Max IA Rms
600.00 A
Displays the true RMS maximum current value for
phase A.
Max IB Rms
600.00 A
Displays the true RMS maximum current value for
phase B.
Max IC Rms
600.00 A
Displays the true RMS maximum current value for
phase C.
Average IA Rms
600.00 A
Displays the true RMS average current value for
phase A.
Average IB Rms
600.00 A
Displays the true RMS average current value for
phase B.