User Manual

3UG4641 cos phi and active current monitoring relay
12.3 Functions
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
283
Function diagrams 3UG4641 (active current monitoring I
res
)
Display Memory = no
Relay switching behavior = NC (closed-circuit
principle)
Memory = no
Relay switching behavior = NO (open-circuit
principle)
I
r
= off
>
I
r
>
11/14
11/12
21/24
21/22
Hyst
onDel Del
J = 0
,
U
J > I
U
11/14
11/12
21/24
21/22
Hyst
onDel Del
J = 0
,
U
J > I
U
I
r
= off
>
I
r
>
11/14
11/12
21/24
21/22
Hyst
onDel
Del
J = 0
,
U
U
J < I
11/14
11/12
21/24
21/22
Hyst
onDel
Del
J = 0
,
U
U
J < I
I
r
>
I
r
>
11/14
11/12
21/24
21/22
Hyst
Hyst
onDel
Del
Del
J = 0
,
U
,
U
U
J > I
U
J < I
11/14
11/12
21/24
21/22
Hyst
Hyst
onDel
Del
Del
J = 0
,
U
,
U
U
J > I
U
J < I
J = currently set current value
I = set threshold value for the current