8.4 Operation
Parameters
Parameterization of the devices is possible locally using the display and the three keys.
Parameter information
The following table lists the adjustable parameter information for the 3UG4625 residual current
monitoring relay:
Table 8-2 Parameter information, 3UG4625 residual current monitoring relays with digital setting
Menu
level
Parameters Setting range Increment Factory set‐
ting
Minimum value Maximum value
"RUN" Threshold for overshoot (I▲) 0.03 A 40.0 A Depending on
the value, 0.01 A
or 0.1 A
1.0 A
"RUN" Warning threshold for overshoot
(I!)
0.03 A or OFF 40.0 A Depending on
the value, 0.01 A
or 0.1 A
0.5 A
"SET" Hysteresis (Hyst) OFF (0 %) 50 % 5 % 5 %
"SET" Initialization (Init) ERR OK -- ERR
"SET" ON-delay time (onDel) 0.1 s or OFF 20.0 s 0.1 s OFF
"SET" Tripping delay time (I▲Del) 0.1 s or OFF 20.0 s 0.1 s 0.1 s
"SET" Reset response (Mem) no = Autoreset yes = Hand‑RESET -- no = Autore‐
set
"SET" Relay switching behavior
(closed-circuit principle NC /
open-circuit principle NO)
NC or NO -- NC
Note
Various parameters are deactivated by setting OFF.
The parameters are described in the Chapter "Parameters (Page 281)".
Menu-based operation is described in the Chapter "Menu-based operation (Page 44)".
The 3UL23 residual current transformers used cover the entire fault current range from
0.03 to 40 A in all sizes.
For more information on the technical data of 3UL23 residual current transformers see Chapter
"Installing (Page 260)".
3UG4625 residual current monitoring relay with 3UL23 transformer
8.4 Operation
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 145
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