Areva MiCOM P125, Technical Manual

Page: 106 / 362

P12y/EN FT/D32 User Guide
Page 26/86 MiCOM P125/P126 & P127
The following table lists the shown voltage measurements
Configuration
3Vpn Displayed
on HMI Configuration
2Vpn+Vr Displayed on
HMI Configuration
2Vpp + Vr Displayed
on HMI
Ua
Direct
measurement
Yes
Direct
measurement
Yes N.A -------------
Ub
Direct
measurement
Yes
Direct
measurement
Yes N.A -------------
Uc
Direct
measurement
Yes
Derived
measurement
Yes N.A -------------
Uab
Derived
measurement
Yes
Derived
measurement
Yes
Direct
measurement
Yes
Ubc
Derived
measurement
Yes
Derived
measurement
Yes
Direct
measurement
Yes
Uac
Derived
measurement
Yes
Derived
measurement
Yes
Derived
measurement
No
UN
Derived
measurement
Yes
Direct
measurement
Yes
Direct
measurement
Yes
To gain access to the MEASUREMENTS menu from the default display, press " then $
until the header of menu is reached.
The following windows list the items available in the measurements menu for the P125, P126
& P127 relays.
4.4.4 Menu MEASUREMENTS for P125
MEASUREMENTS
Heading of MEASUREMENTS menu.
To gain access to the submenu contents, press
"
.
Frequency
50.00
Hz
Displays the network frequency taken from analogue inputs
having a reliable signal level. In case of no reliable
analogue signal input level present the display shows
XX.XX Hz
.
IN
3.15
A
Displays the earth current (true RMS value) taking in
account the earth CT ratio (CONFIGURATION/Transfo.
Ratio submenu).
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).
UN
100
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 value and the relevant angle.
IeCos
0.00
A
Displays the active earth fault current value.
IN ^ UN
0.0
°
Displays the angle value between the Zero sequence
voltage and earth fault current.relevant.