GE 745 Instruction Manual page 119

CHAPTER 5: SETPOINTS
Transformer Wdg. Connection
type
D/y330°/d0° 1
2
3
D/y330°/ 1
d180°
2
3
D/y330°/ 1
y150°
2
3
Y/z30°/z30° 1
2
3
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Table 5–1: Transformer types (Sheet 11 of 11)
Voltage Phase
phasors shift
DELTA
WYE 30° lag
330° lag
DELTA
0°
DELTA
WYE 30° lag
330° lag
DELTA 180° lag
180° lag
DELTA
WYE 30° lag
330° lag
WYE 210° lag
150° lag
WYE 30° lag
ZIG-ZAG
30° lag
ZIG-ZAG
30° lag
Transformer Wdg.
type
0° D/y330°/ 1
d120°
2
0° 3
0° D/y330°/ 1
d300°
2
3
0° D/y330°/ 1
y330°
2
3
Y/y0°/y0° 1
0° 2
0° 3
AUTO-CONFIGURATION
Connection Voltage
phasors
DELTA
WYE
330° lag
DELTA 240° lag
120° lag
DELTA
WYE
330° lag
DELTA
300° lag
DELTA
WYE
330° lag
WYE
330° lag
WYE
WYE
0°
WYE
0°
Phase
shift
0°
30° lag
0°
30° lag
60° lag
0°
30° lag
30° lag
0°
0°
0°
5–23