Operation - Siemens SIRIUS 3UG4 Equipment Manual

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 Parameters
level
"RUN" Threshold for overshoot (I▲)
"RUN" Warning threshold for overshoot
(I!)
"SET" Hysteresis (Hyst)
"SET" Initialization (Init)
"SET" ON-delay time (onDel)
"SET" Tripping delay time (I▲Del)
"SET" Reset response (Mem)
"SET" Relay switching behavior
(closed-circuit principle NC /
open-circuit principle NO)
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)".
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
3UG4625 residual current monitoring relay with 3UL23 transformer
Setting range
Minimum value Maximum value
0.03 A 40.0 A
0.03 A or OFF 40.0 A
OFF (0 %) 50 %
ERR OK
0.1 s or OFF 20.0 s
0.1 s or OFF 20.0 s
no = Autoreset yes = Hand‑RESET
NC or NO
8.4 Operation
Increment Factory set‐
ting
Depending on 1.0 A
the value, 0.01 A
or 0.1 A
Depending on 0.5 A
the value, 0.01 A
or 0.1 A
5 % 5 %
-- ERR
0.1 s OFF
0.1 s 0.1 s
-- no = Autore‐
set
-- NC
145