
3UG4.1 line monitoring relay
6.5 3UG4614 line monitoring relay
3UG4 / 3RR2 monitoring relays
136
Manual, 05/2016, NEB927043002000/RS-AC/004
6.5.4
Diagnostics
6.5.4.1
Indications on the display
Display information
The display is divided into three different 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 flash to indicate an error.
The following statuses and line faults are indicated as a diagnostics message with flashing
symbols:
Display area Symbol
Meaning
①
200V
Measured line-to-line voltage (L1 - L2) is displayed
①
L
Flashing: Phase failure detected
①
Flashing: Incorrect phase sequence detected
①
Asym
Flashing: Voltage asymmetry detected
②
Monitoring for overshoot of the voltage asymmetry
②
Monitoring for voltage undershoot
②
Voltage is in correct range
②
A voltage overshoot has occurred
②
A voltage undershoot has occurred
③
•
Not flashing: Relay contact 11/12 open, relay contact 11/14 closed
•
Flashing: Delay time (ON-delay or tripping delay) 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
•
Flashing: Delay time (ON-delay or tripping delay) running
•
Masked out: Relay contact 21/22 closed, relay contact 21/24 open
You will find more information about the switching behavior of the output relays in Chapter
"Functions (Page 132)".