User Manual

3RR2 current monitoring relays

4.5 3RR22 current monitoring relays

3UG4 / 3RR2 monitoring relays

Manual, 02/2013, NEB927043002000/RS-AA/002

4.5.4 Diagnostics

Display information

The display is divided into three different areas.

① Current measured value or fault symbol

② Type of monitoring

③ Symbols for the semiconductor contact (left) and the CO contact (right)

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

12.5A Displays the measured current

①

n x I▲ Flashing: Current is above the set blocking current

①

I>>

Flashing: Fault current detected

①

Flashing: Cable break/phase failure detected

①

Flashing: Incorrect phase sequence detected

②

Monitoring for current overshoot

②

Monitoring for current undershoot

②

Range monitoring (monitoring for current overshoot and current undershoot)

②

Current is in correct range

②

A current overshoot has occurred

②

A current undershoot has occurred