U
A
U
B
U
C
U
BC
U
AB
U
CA
I
A
I
B
I
C
j
90°
GUID-6DA409C2-E9BE-4A53-A5D3-38342B0D2352 V1 EN
Figure 55:
Single-phase earth-fault of phase A
shows phasors in single-phase earth-fault, where the faulted phase is phase
A. The angle difference between the polarizing quantity U
BC
and operating quantity
I
A
is marked as ϕ. Note that the polarizing quantity is rotated with 90°. The
Characteristic angle
is assumed to be 0°.
shows phasors in two-phase short circuit failure, where the fault is between
phase B and phase C. The angle difference between the polarizing quantity
U
U
CA
AB
−
and operating quantity
I
I
B
C
−
is marked as ϕ.
are valid if the phase rotation is ABC.
1MRS757488 H
Section 6
Commissioning
RIO600
97
Installation and Commissioning Manual
Содержание Remote I/O RIO600
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