GE 745 Instruction Manual page 114

AUTO-CONFIGURATION
Transformer Wdg. Connection
type
Y/d330°/ 1
d210°
2
3
D/d0°/d0° 1
2
3
D/d0°/d120° 1
2
3
D/d0°/d240° 1
2
3
D/d0°/y30° 1
2
3
5–18
Table 5–1: Transformer types (Sheet 6 of 11)
Voltage Phase
phasors shift
WYE 330° lag
DELTA
330° lag
DELTA 120° lag
210° lag
DELTA
DELTA
0°
DELTA
0°
DELTA 120° lag
DELTA 120° lag
0°
DELTA
120° lag
DELTA 240° lag
DELTA 240° lag
0°
DELTA
240° lag
DELTA
DELTA
0°
WYE 330° lag
30° lag
Transformer Wdg.
type
Y/d330°/
d330°
0°
0° D/d0°/d60°
0°
0°
D/d0°/d180°
0°
D/d0°/d300°
0°
0° D/d0°/y150°
0°
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
Connection Voltage
phasors
1 WYE
2 DELTA
330° lag
3 DELTA
330° lag
1 DELTA
2 DELTA
0°
3 DELTA
60° lag
1 DELTA
2 DELTA
0°
3 DELTA
180° lag
1 DELTA
2 DELTA
0°
3 DELTA
300° lag
1 DELTA
2 DELTA
0°
3 WYE
150° lag
Phase
shift
330° lag
0°
0°
60° lag
60° lag
0°
180° lag
180° lag
0°
300° lag
300° lag
0°
0°
0°
210° lag