GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual page 69

5 SETPOINTS
Table 5–1: TRANSFORMER TYPES (Sheet 19 of 26)
TRANSFORMER WDG
CONNECTION
TYPE #
1 DELTA
DELTA
D/d180°/
2
180° lag
y330°
WYE
3 (gnd 2/3)
330° lag
1 DELTA
DELTA
D/d240°/d0° 2
240° lag
DELTA
3
0°
1 DELTA
DELTA
D/d240°/d60°
2
240° lag
DELTA
3
60° lag
1 DELTA
D/d240°/
DELTA
2
d240°
240° lag
DELTA
3
240° lag
1 DELTA
DELTA
2
D/d240°/y30°
240° lag
WYE
3 (gnd 2/3)
30° lag
GE Power Management
Table 5–1: TRANSFORMER TYPES (Sheet 20 of 26)
VOLTAGE PHASE TRANSFORMER
PHASORS SHIFT
0°
180°
lag
30° lag
240°
lag
D/d300°/d0°
0°
240°
lag
240°
lag
0°
180°
lag
240°
lag
0°
D/y30°/d60°
0°
0°
120°
lag
D/y30°/d240°
330°
lag
745 Transformer Management Relay
5.2 AUTO-CONFIGURATION
WDG
CONNECTION
TYPE #
1 DELTA
DELTA
D/d240°/
2
240° lag
y210°
WYE
3 (gnd 2/3)
210° lag
1 DELTA
DELTA
2
300° lag
DELTA
3
0°
1 DELTA
D/d300°/ DELTA
2
d180° 300° lag
DELTA
3
180° lag
1 DELTA
WYE
2 (gnd 1/2)
30° lag
DELTA
3
60° lag
1 DELTA
WYE
2 (gnd 1/2)
30° lag
DELTA
3
240° lag
VOLTAGE PHASE
PHASORS SHIFT
0°
120°
lag
150°
lag
300°
lag
0°
300°
lag
5
300°
lag
0°
120°
lag
0°
330°
lag
300°
lag
0°
330°
lag
120°
lag
5-19