3UG4.1 line monitoring relay
6.5 3UG4614 line monitoring relay
3UG4 / 3RR2 monitoring relays
136 Manual, 05/2016, NEB927043002000/RS-AC/004
Indications on the display
Display information
The display is divided into three different areas.
Voltage measured value or fault symbol
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:
200V Measured line-to-line voltage (L1 - L2) is displayed
L
Flashing: Phase failure detected
â‘
Flashing: Incorrect phase sequence detected
â‘
Asym Flashing: Voltage asymmetry detected
â‘¡
Monitoring for overshoot of the voltage asymmetry
Monitoring for voltage undershoot
Voltage is in correct range
A voltage overshoot has occurred
A voltage undershoot has occurred
â‘¢
• 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
• 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)".
To Next Page
Loading...
Need help?
General