Manual 37353A
MFR 13 Packages - Protection Relay
© Woodward
Page 27/91
LEDs
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NOTE
If neither of the "Wye" and "Delta" LEDs is illuminated, the first line of the display indicates the meas-
ured currents of the phases.
1 "Wye"
Color: Yellow
Indication of the wye voltages
If this LED is illuminated, the values indicated on the display are the wye
(star) voltages (phase-neutral).
2 "Delta"
Color: Yellow
Indication of the delta voltages
If this LED is illuminated, the values indicated on the display are the delta
voltages (phase-phase).
3 "Operation
"
Color: Green
Operation
This LED is illuminated constantly when the control unit is in the Automatic
mode. If this LED is flashing, the control is in the configuration mode.
4 "Alarm"
Color: Red
Alarm
This LED flashes as long as a set point limit is exceeded. When all measur-
ing values are below the configured set point limit again and "Auto clearing
display" is configured "OFF", this LED will change to steady illumination.