User Manual

3UG4625 residual current monitoring relay with 3UL23 transformer
9.3 Functions
3UG4 / 3RR2 monitoring relays
194 Manual, 02/2013, NEB927043002000/RS-AA/002
Function diagrams for 3UG4625
Note
Difference between Hyst and Hysteresis
In the following diagrams, the term "Hyst" refers to the "Hysteresis" parameter. The
"Hysteresis" parameter refers to the monitored limit values (I▲) and can be set in the SET
menu.
However, "Hyst = 5 %" refers to the warning thresholds (I!) and is permanently set to 5 %.
Display Memory = no
Relay switching behavior = NC (closed-circuit principle)
I▲ / I!
Mem = no
Del
I
onDel
Init
I
!
I
A1-A2
11/14
11/12
I=0
21/24
21/22
>
I
I
!
>
I
I
onDel
Hyst
Hyst = 5 %
I = 0.02A
Display Memory = no
Relay switching behavior = NO (open-circuit principle)
I▲ / I!
Mem = no
A1-A2
I
!
I
I=0
11/14
11/12
21/24
21/22
Init
onDel
onDel
Del
I
Hyst
Hyst = 5 %
I = 0.02A
>
I
I
!
>
I
I