6.7.4 Diagnostics
6.7.4.1 Indications on the display
Display information
The display is divided into three dierent areas.
① Voltage measured value or fault symbol
② Type of monitoring
③ Symbols of the changeover contacts
Meaning of the information on the display
Note
Indications in the event of a fault
The symbols on the display ash to indicate an error.
The following statuses and line faults are indicated as a diagnostics message with ashing
symbols:
Display
area
Symbol Meaning
① 200V Measured voltage is displayed
① L Flashing: Phase failure detected
① Asym Flashing: Line voltage asymmetry detected
② Monitoring for voltage overshoot
② Monitoring for voltage undershoot
② Range monitoring (monitoring for voltage overshoot and under‐
shoot)
② Voltage is in correct range
② A voltage overshoot has occurred
② A voltage undershoot has occurred
③ Error
• Not ashing: Relay contact 11/12 open, relay contact 11/14
closed
• Flashing: Delay time (tripping delay) is running
• Masked out: Relay contact 11/12 closed, relay contact 11/14
open
3UG4.1 line monitoring relay
6.7 3UG4617 / 3UG4618 line monitoring relays
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 117