Siemens 3UG4 - Operation

3UG4625 residual current monitoring relay with 3UL23 transformer
8.4 Operation
3UG4 / 3RR2 monitoring relays
202 Manual, 05/2016, NEB927043002000/RS-AC/004
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 setting
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 = Autoreset
"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 363)".
Menu-based operation is described in the Chapter "Menu-based operation (Page 39)".
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 "Technical data (Page 346)".