User Manual

3UG4.1 line monitoring relay
6.5 3UG4614 line monitoring relay
3UG4 / 3RR2 monitoring relays
122 Manual, 02/2013, NEB927043002000/RS-AA/002
6.5.4 Diagnostics
6.5.4.1 Indications on the display
Display information
The display is divided into three different areas.
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① Voltage measured value or fault symbol
② Type of monitoring
③ Symbols of the change-over 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