Siemens SIRIUS 3UG4 - Page 222

Function diagrams 3UG4641 (cos phi monitoring)
Display Memory = no
Relay switching behavior = NC (closed-circuit prin‐
ciple)
Memory = no
Relay switching behavior = NO (open-circuit prin‐
ciple)
φ = off
>
φ
>
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
onDel Del
PF = 0
cos
ϕ = 0
ϕ
PF >
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
onDel Del
PF = 0
cos
ϕ = 0
ϕ
PF >
φ = off
>
φ
>
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
onDel
Del
PF = 0
cos
ϕ = 0
ϕ
PF <
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
onDel
Del
PF = 0
cos
ϕ = 0
ϕ
PF <
φ
>
φ
>
ϕ
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
Hyst, 0.10
onDel
Del
Del
PF = 0
cos
ϕ = 0
ϕ
PF >
ϕ
PF <
ϕ
ϕ
11/14
11/12
21/24
21/22
Hyst, 0.10
Hyst, 0.10
onDel
Del
Del
PF = 0
cos
ϕ = 0
ϕ
PF >
ϕ
PF <
cos φ = currently set value for cos φ
PF = power factor = set threshold for cos φ
3UG4641 cos phi and active current monitoring relay
11.3 Functions
SIRIUS 3UG4 / 3RR2 monitoring relay
222 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005