Manual 37351A
MFR 11 Packages - Protection Relay
© Woodward
Page 23/59
LC Display
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
5
LC Display LC display
Performance values can be monitored from the two-line display, provided
that the control is in automatic mode. In configuration mode, the individual
parameters are displayed.
Display in Automatic Mode (First Line of the Display: Measured Values)
NOTE
The user can scroll through the first display line with the button "Display
↓
".
"Wye" = on, "Delta" = off
Wye voltages
230 230 230 V
----------------
"Wye" = off, "Delta" = on
Delta voltages
400 400 400 V
----------------
Display in automatic mode, first line: measured values
The following measured values are displayed (depending on the "Wye" and "Delta"
LEDs):
- The "Wye" LED is illuminated, and the "Delta" LED is off.
The wye (star) voltages (V
L1-N
, V
L2-N
and V
L3-N
) of the four-wire system are indicated.
If the application is a three-wire system, the configuration screen "
Volt.-
Measuring
"
must be configured to
"
phase to phase
".
The "Wye" LED will
not illuminate in this application.
- The "Wye" LED is off and the "Delta" LED is illuminated.
The delta voltages (V
L1-L2
, V
L2-L3
and V
L3-L1
) of the phase-to-phase system/phase -
neutral system are indicated.
- The "Wye" LED is off and the "Delta" LED is off.
The phase currents (I
L1
, I
L2
and I
L3
) are displayed
Display in Automatic Mode (Second Line of the Display: Measured Values)
NOTE
The "Menu" button may be used to scroll through the messages shown on the second line of the dis-
play.
----------------
00.00 xxxxxxxxxx
Display in automatic mode, second line: measured values
The frequency is always indicated in [Hz].
Instead of "
xxxxxxxxxx
" the following measuring values are indicated:
•
Synchronizing voltage
Unit dynamic in [V / kV]
Packages SC
/
SC+N
•
Synchronizing frequency
Unit static in [Hz]
Packages SC
/
SC+N
•
Synchronizing angle
Unit static in [°]
Packages SC
/
SC+N
