52
NVA100X-D - Manual - 02 - 2016
FUNCTION CHARACTERISTICS
Conventions
Cyclic phase sequence order
For three phase rotating currents, a direct cyclic sequence is defi ned when the three phases are
L1, L2, L3 ordered, while an inverse cyclic sequence is defi ned when the three phases are L1, L3, L2
ordered. Operating with ThySetter at level 1, one of the six combinations of cyclical succession for
the phasor current of H side, the current phasors of side L and voltage phasors may be select. This
function allows errors corrections for cyclic inversion.
—
fasori1.ai
IL1H-IL3H-IL2H
IL2H-IL1H-IL3H
IL2H-IL3H-IL1H
IL3H-IL1H-IL2H
IL3H-IL2H-IL1H
I
L1H
I
L2H
I
L3H
I
L1H
I
L2H
I
L3H
I
L2H
I
L3H
I
L1H
I
L2H
I
L1H
I
L3H
I
L3H
I
L2H
I
L1H
I
L3H
I
L1H
I
L2H
IL1L-IL3L-IL2L
IL2L-IL1L-IL3L
IL2L-IL3L-IL1L
IL3L-IL1L-IL2L
IL3L-IL2L-IL1L
I
L1L
I
L2L
I
L3L
I
L1L
I
L2L
I
L3L
I
L2L
I
L3L
I
L1L
I
L2L
I
L1L
I
L3L
I
L3L
I
L2L
I
L1L
I
L3L
I
L1L
I
L2L
Direct sequence cyclic order
for side H currents (Base)
Direct sequence cyclic order
for side L currents (Base)
fasori1.ai
IL1H-IL3H-IL2H
IL2H-IL1H-IL3H
IL2H-IL3H-IL1H
IL3H-IL1H-IL2H
IL3H-IL2H-IL1H
I
L1H
I
L2H
I
L3H
I
L1H
I
L2H
I
L3H
I
L2H
I
L3H
I
L1H
I
L2H
I
L1H
I
L3H
I
L3H
I
L2H
I
L1H
I
L3H
I
L1H
I
L2H
IL1L-IL3L-IL2L
IL2L-IL1L-IL3L
IL2L-IL3L-IL1L
IL3L-IL1L-IL2L
IL3L-IL2L-IL1L
I
L1L
I
L2L
I
L3L
I
L1L
I
L2L
I
L3L
I
L2L
I
L3L
I
L1L
I
L2L
I
L1L
I
L3L
I
L3L
I
L2L
I
L1L
I
L3L
I
L1L
I
L2L
Direct sequence cyclic order
for side H currents (Base)
Direct sequence cyclic order
for side L currents (Base)
cyclic.ai
Proper connections -> no software correction of cyclic sequence required
Sequence = IL1-IL2-IL3 Base
I
L1
->
I
L1
I
L2
->
I
L2
I
L3
->
I
L3
I
L1
->
I
L1
I
L2
->
I
L3
I
L3
->
I
L2
L1 L2 L3
Wrong connections -> software correction of cyclic sequence required
Sequence = IL1-IL3-IL2
L1 L2 L3
NVA100X-D
NVA100X-D