User Manual

3UG4625 residual current monitoring relay with 3UL23 transformer
9.5 Diagnostics
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
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9.5 Diagnostics
9.5.1 Indications on the display
Display information
The display is divided into three different areas.
23
1
① Current 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 faults are indicated on the display as a diagnostics message with
flashing symbols:
Display
area
Symbol Meaning
①
5.00A Displays the measured current
②
Monitoring for current overshoot
②
Current is in correct range
②
A current overshoot has occurred
②
Flashing alternately. The warning threshold has been exceeded
③
I
▲
• 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
I!
• Not flashing: Relay contact 21/22 open, relay contact 21/24 closed
• Flashing: Delay time (ON-delay) running
• Masked out: Relay contact 21/22 closed, relay contact 21/24 open
①
---A Self-test active, no measurements