Siemens SIRIUS 3UG4 User Manual

7.4 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 3UG4621 and 3UG4622
current monitoring relays:
Table 7-2 Parmeter information, 3UG4621 and 3UG4622 current monitoring relays with digital setting
Menu
level
Parameters Setting range Increment Factory setting
Minimum value Maximum value
"RUN" Threshold for undershoot (I▼) 3.0 mA or OFF
1)
0.05 A or OFF
2)
500 mA
1)
10.0 A
2)
0.1 mA
1)
0.01 A
2)
50 mA
1)
1.5 A
2)
"RUN" Threshold for overshoot (I▲) 3.0 mA
1)
0.05 A
2)
500 mA or OFF
1)
10.0 A or OFF
2)
0.1 mA
1)
0.01 A
2)
150 mA
1)
2.5 A
2)
"SET" Hysteresis (Hyst) 0.1 mA
1)
0.01 A
2)
250.0 mA
1)
5.0 A
2)
0.1 mA
1)
0.01 A
2)
10.0 mA
1)
0.5 A
2)
"SET" ON-delay time (onDel) 0.1 s 20 s 0.1 s 0.1 s
"SET" Tripping delay time (
I D e l
▼
▼
) 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 / U
s
= on or NO / I > 3 mA
1)
NC / U
s
= on or NO / I > 50 mA
2)
-- NC / U
s
= on
1)
3UG4621 current monitoring relay
2)
3UG4622 current monitoring relay
Note
"Overshoot" monitoring mode is activated when the undershoot threshold is set to OFF.
"Undershoot" monitoring mode is activated when the overshoot threshold is set to OFF.
Note
Deactivating monitoring
If the upper and lower threshold values are deactivated (OFF), monitoring will cease for:
• Current overshoot
• Current undershoot
The up-to-date measured value is displayed permanently.
3UG4621/3UG4622 current monitoring relays
7.4 Operation
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 127

Siemens SIRIUS 3UG4 Specifications

General

Brand	Siemens
Model	SIRIUS 3UG4
Category	Relays
Language	English