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5.2 AUTO-CONFIGURATION
Table 5–1: TRANSFORMER TYPES (SHEET 21 OF 24)
TRANSFORMER
WDG # CONNECTION
TYPE
D/y150°/d180°
1
2
3
D/y150°/d300°
1
2
3
5
D/y150°/y150°
1
2
3
D/y150°/y330°
1
2
3
5-20
Courtesy of NationalSwitchgear.com
VOLTAGE
PHASE
PHASORS
SHIFT
DELTA
0°
WYE
210° lag
(gnd 1/2)
150° lag
DELTA
180° lag
180° lag
DELTA
0°
WYE
210° lag
(gnd 1/2)
150° lag
DELTA
60° lag
300° lag
DELTA
0°
WYE
210° lag
(gnd 1/2)
150° lag
WYE
210° lag
(gnd 2/3)
150° lag
DELTA
0°
WYE
210° lag
(gnd 1/2)
150° lag
WYE
30° lag
(gnd 2/3)
330° lag
745 Transformer Management Relay
Table 5–1: TRANSFORMER TYPES (SHEET 22 OF 24)
TRANSFORMER
WDG # CONNECTION
TYPE
D/y210°/d0°
1
DELTA
2
WYE
(gnd 1/2)
210° lag
3
DELTA
0°
D/y210°/d60°
1
DELTA
2
WYE
(gnd 1/2)
210° lag
3
DELTA
60° lag
D/y210°/d240°
1
DELTA
2
WYE
(gnd 1/2)
210° lag
3
DELTA
240° lag
D/y210°/y30°
1
DELTA
2
WYE
(gnd 1/2)
210° lag
3
WYE
(gnd 2/3)
30° lag
D/y210°/y210°
1
DELTA
2
WYE
(gnd 1/2)
210° lag
3
WYE
(gnd 2/3)
210° lag
5 SETPOINTS
VOLTAGE
PHASE
PHASORS
SHIFT
0°
150° lag
0°
0°
150° lag
300° lag
0°
150° lag
120° lag
0°
150° lag
330° lag
0°
150° lag
150° lag
GE Multilin
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