5-22
745 Transformer Management Relay
GE Multilin
5.2 AUTO-CONFIGURATION
5 SETPOINTS
5
5.2.7 PHASE SHIFTS
The table below provides additional information about the
Phase Shift
column in Table 5–1: Transformer Types on page 5–
10 and represents an assumed ABC phasor rotation. For transformers connected to a system with a phasor rotation of
ACB, interchange all B (b) and C (c) designations.
Table 5–2: PHASE SHIFTS
PHASE
SHIFT
INPUT
PHASORS
OUTPUT
PHASORS
PHASOR
TRANSFORMATION
PHASE
SHIFT
INPUT
PHASORS
OUTPUT
PHASORS
PHASOR
TRANSFORMATION
0°
a = A
b = B
c = C
180° lag
a = –A
b = –B
c = –C
30° lag
a = (A – C) /
b = (B – A) /
c = (C – B) /
210° lag
a = (C – A) /
b = (A – B) /
c = (B – C) /
60° lag
a = –C
b = –A
c = –B
240° lag
a = C
b = A
c = B
90° lag
a = (B – C) /
b = (C – A) /
c = (A – B) /
270° lag
a = (C – B) /
b = (A – C) /
c = (B – A) /
120° lag
a = B
b = C
c = A
300° lag
a = –B
b = –C
c = –A
150° lag
a = (B – A) /
b = (C – B) /
c = (A – C) /
330° lag
a = (A – B) /
b = (B – C) /
c = (C – A) /
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
