User Manual

3UG4641 cos phi and active current monitoring relay
12.3 Functions
3UG4 / 3RR2 monitoring relays
282 Manual, 02/2013, NEB927043002000/RS-AA/002
Tripping delay
If the measured value overshoots or undershoots the set threshold after expiry of the ON-
delay time (onDel), the set tripping delay time (Del) and the relay symbol will flash. After
expiry of this time, the output relays change the switching state. On the display, the current
measuring value and the symbol for undershoot or overshoot flash.
You will find the switching states of the output relays below in section "Function diagrams"
and in Chapter "Diagnostics (Page 286)."
Function diagrams 3UG4641 (lower current measuring threshold 0.2 A)
Display Memory = no
Relay switching behavior = NC (closed-circuit
principle)
Memory = no
Relay switching behavior = NO (open-circuit
principle)
I
r
>
Lx-Ly/N
11/14
11/12
21/24
21/22
onDel onDel
J = 0
I = 0.2 A
J < 0,2 A
Lx-Ly/N
11/14
11/12
21/24
21/22
onDel onDel
J = 0
I = 0.2 A
J < 0.2 A
I
r
= off
>
Lx-Ly/N
11/14
11/12
21/24
21/22
onDel onDel
J = 0
I = 0.2 A
J < 0,2 A
Lx-Ly/N
11/14
11/12
21/24
21/22
onDel onDel
J = 0
I = 0.2 A
J < 0,2 A
J = currently set current value
I = set threshold value for the current