User Manual

Parameters
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
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Possible indications on the display:
● Current overshoot: I▲ (threshold), I!▲ (warning threshold)
● Voltage overshoot: U▲ (threshold), possibly U!▲ (warning threshold)
● Speed overshoot: rpm▲ (threshold), possibly rpm!▲ (warning threshold)
● Power factor overshoot: φ▲ (threshold), possibly φ!▲ (warning threshold)
● Active current overshoot: I
r
▲ (threshold), possibly I
r
!▲ (warning threshold)
● Fault current overshoot: I▲(threshold), possibly I! (warning threshold)
Reset response
The setting of the "Reset response" parameter controls how the device behaves after
tripping in the event of an error, and the subsequent reversion of the measured values to the
normal range once the cause of the error has been dealt with.
The outputs are reset dependent on the setting of the "Reset response" parameter.
The following settings can be selected:
● Automatic reset
If the device is set to automatic reset, the switching contact will respond once the normal
range plus the hysteresis threshold have been reached. The device is reset automatically
as soon as a previously occurring error has been dealt with. The overshoot or undershoot
which triggered the response is not saved.
● Manual RESET
If manual RESET is selected, the switching contact remains in the current switching state
even if the measured value returns to a permissible value.
Possible indications on the display: Mem