2 Functions
184
7UM61 Manual
C53000-G1176-C127-3
I0
(Zero sequence
current system)
I0/I
N,sec
· 100 % The zero sequence current is determined
from the phase currents on the basis of the
definition equation for symmetrical compo-
nents. The calculation is performed once per
cycle.
I1
(Positive sequence
current system)
I1/I
N,sec
· 100 % The positive sequence current is determined
from the phase currents on the basis of the
definition equation for symmetrical compo-
nents. The calculation is performed once per
cycle.
I2
(Negative sequence
current system)
I2/I
N,sec
· 100 % The negative sequence current is determined
from the phase currents on the basis of the
definition equation for symmetrical compo-
nents. The calculation is performed once per
cycle.
ϕ
(Power angle)
ϕ/180° · 100 % The power angle is calculated from the posi-
tive sequence voltage and the positive se-
quence current. The following definition ap-
plies:
ϕ = ϕU - ϕI (A positive angle will appear if the
current lags behind the voltage)
Measured Value Scaling Explanation
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