3UG4.1 line monitoring relay
6.7 3UG4617 / 3UG4618 line monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
163
Meaning of the information on the display
Note
Indications in the event of a fault
The symbols on the display flash to indicate an error.
The following statuses and line faults are indicated as a diagnostics message with flashing
symbols:
200V Measured voltage is displayed
L
Flashing: Phase failure detected
Asym Flashing: Line voltage asymmetry detected
Monitoring for voltage overshoot
Monitoring for voltage undershoot
Range monitoring (monitoring for voltage overshoot and
undershoot)
Voltage is in correct range
A voltage overshoot has occurred
A voltage undershoot has occurred
Error
• Not flashing: 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
③
• Not flashing: Relay contact 21/22 open, relay contact 21/24
closed
• Masked out: Relay contact 21/22 closed, relay contact 21/24
open
Note
CO contact 1 switches on all types of error.
CO contact 2 is for operating a reversing combination.
You will find more information about the switching behavior of the output relays in Chapter
"Functions (Page 157)".
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