Siemens 3UG4 - Page 199

3UG4625 residual current monitoring relay with 3UL23 transformer
8.3 Functions
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
199
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; Init = ERR
Relay switching behavior = NO (open-circuit principle)
I▲ / I!
Mem = no
Init = ERR
Display
Memory = no; Init = ERR
Relay switching behavior = NC (closed-circuit principle)
I▲ / I!
Mem = no
Init = ERR