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3UG4641 cos phi and active current monitoring relay
12.6 Circuit diagrams
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
289
Cos phi and active current monitoring for three-phase motors
3UG4641
Lx
Ly/N
IN
12
11
14
22
21
24
ϕ
I
r
|
/
|
I
r
|
/
ϕ
|
M
3~
n = 1, 2, 3
Ln
Ln
Ln
3~,
I
≤
10 A
Cos phi and active current monitoring for
three-phase motors
3UG4641
Lx
Ly/N
IN
12
11
14
22
21
24
ϕ
I
r
|
/
|
I
r
|
/
ϕ
|
M
3~
n = 1,2,3
Ln
Ln
Ln
N
3/N~,
I
≤
10 A
Cos phi and active current monitoring for
three-phase motors (with neutral conductor)
Cos phi and active current monitoring for three-phase motors with transformers for currents
3UG4641
Lx
Ly/N
IN
12
11
14
22
21
24
ϕ
I
r
|
/
|
I
r
|
/
ϕ
|
M
3~
n = 1, 2, 3
Ln
Ln
Ln
3~,
I
>
10 A
Cos phi and active current monitoring for
three-phase motors with transformers for
currents
3~,
I
>
10 A
3UG4641
Lx
Ly/N
IN
12
11
14
22
21
24
ϕ
I
r
|
/
|
I
r
|
/
ϕ
|
M
3~
n = 1,2,3
Ln
Ln
Ln
N
Cos phi and active current monitoring for
three-phase motors with transformer for
currents (with neutral conductor)