Siemens 3UG4 - Operation

3UG4641 cos phi and active current monitoring relay
11.4 Operation
3UG4 / 3RR2 monitoring relays
296 Manual, 05/2016, NEB927043002000/RS-AC/004
11.4
Operation
Parameters
Parameterization of the devices is possible locally using the display and the three keys.
Parameter information
The table below shows the settable parameter information of the 3UG4641 cos phi and
active current monitoring relays:
Table 11- 2 Parameter information, 3UG4641 cos phi and active current monitoring relay with digital setting
Menu
level
Parameters
Setting range
Increment
Factory setting
Minimum value
Maximum value
"RUN" Threshold for undershoot (I
res
▼) 0.2 A or OFF 10 A 0.1 A 1 A
"RUN"
Threshold for overshoot (I
res
▲)
0.2 A
10 A or OFF
0.1 A
3 A
"RUN"
Threshold for undershoot (φ▼)
0.1 or OFF
0,99
0,01
0,2
"RUN"
Threshold for overshoot (φ▲)
0,1
0.99 or OFF
0,01
0,5
"SET"
Hysteresis (Hyst)
0.1 A
2 A
0.1 mA
0.5 A
"SET" ON-delay time (onDel) 0 s 99 s 1 s Deactivated (0 s)
"SET"
Tripping delay time (Del)
0.1 s
20 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
The monitoring mode "Overshoot" or "Undershoot" is defined with the setting OFF at the
threshold for undershoot or overshoot.
The parameters are described in Chapter "Parameters (Page 363)."
Menu-based operation is described in Chapter "Menu-based operation (Page 39)."