Areva MiCOM P125, Technical Manual

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User Guide P12y/EN FT/D32
MiCOM P125/P126 & P127 Page 27/86
4.4.5 MEASUREMENTS Menu Points for P126
MEASUREMENTS
Heading of MEASUREMENTS menu.
To gain access to the items of the menu, press
"
and
$
until the submenu is reached. To gain access to the
submenu contents, press
" or ! .
Frequency
50.00
Hz
Displays the network frequency taken from analogue inputs
having a reliable signal level. In case of non reliable
analogue signal input level present the display shows
XX.XX Hz
.
I A
600.00
A
Displays the A phase current (true RMS value) taking into
account the phase CT ratio (CONFIGURATION/Transfo.
Ratio submenu).
I B
600.00
A
Displays the B phase current (true RMS value) taking into
account the phase CT ratio (CONFIGURATION/Transfo.
Ratio submenu).
I C
600.00
A
Displays the C phase current (true RMS value) taking into
account the phase CT ratio (CONFIGURATION/Transfo.
Ratio submenu).
IN
3.15
A
Displays the earth current (true RMS value) taking in
account the earth CT ratio (CONFIGURATION/Transfo.
Ratio submenu).
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).
Pe
0.00
W
Displays the neutral power based on neutral current value,
neutral voltage and the relevant angle.
IeCos
0.00
A
Displays the active neutral current value.
IN ^ UN
0.0
°
Displays the angle value between the Zero sequence
voltage and earth fault current.relevant.
I N – fn
RST=[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
RST = [C]
0 %
Displays the % thermal state based on true RMS current
phase values.
To clear the % values, press
& .
MAX & AVERAGE
RST = [C]
Allows the user to clear the maximum (peak) and average
(rolling) memorised values of the current.
To clear these values, press
& .
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.