GE 745 Instruction Manual page 110

AUTO-CONFIGURATION
Transformer Wdg. Connection
type
D/y150° 1
2
D/y330° 1
2
Y/z150° 1
2
Y/z330° 1
2
D/z60° 1
2
D/z180° 1
2
D/z300° 1
2
5–14
Table 5–1: Transformer types (Sheet 2 of 11)
Voltage Phase
phasors shift
DELTA
(gnd 1/2)
WYE 210°
(gnd 2/3)
150° lag
DELTA
(gnd 1/2)
WYE 30° lag
(gnd 2/3)
330° lag
WYE 150°
(gnd 1/2)
ZIG-ZAG
(gnd 2/3)
150° lag
WYE 330°
(gnd 1/2)
ZIG-ZAG
(gnd 2/3)
330° lag
DELTA 60° lag
(gnd 1/2)
ZIG-ZAG
(gnd 2/3)
60° lag
DELTA 180° lag
(gnd 1/2)
ZIG-ZAG
(gnd 2/3)
180° lag
DELTA 300°
(gnd 1/2)
ZIG-ZAG
(gnd 2/3)
300° lag
Transformer Wdg.
type
0° D/y210°
lag
0° Y/z30°
Y/z210°
lag
0°
D/z0°
lag
0°
D/z120°
0°
D/z240°
0°
3W External
lag Correction
0°
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
Connection Voltage
phasors
1 DELTA
(gnd 1/2)
2 WYE
(gnd 2/3)
210° lag
1 WYE
(gnd 1/2)
2 ZIG-ZAG
(gnd 2/3)
30° lag
1 WYE
(gnd 1/2)
2 ZIG-ZAG
(gnd 2/3)
210° lag
1 DELTA
(gnd 1/2)
2 ZIG-ZAG
(gnd 2/3)
0° lag
1 DELTA
(gnd 1/2)
2 ZIG-ZAG
(gnd 2/3)
120° lag
1 DELTA
(gnd 1/2)
2 ZIG-ZAG
(gnd 2/3)
240° lag
1 WYE
2 WYE
0°
3 WYE
0°
Phase
shift
0°
150°
lag
30° lag
0°
210°
lag
0°
0°
0°
120°
lag
0°
240°
lag
0°
0°
0°
0°