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5 SETPOINTS
Table 5–1: TRANSFORMER TYPES (SHEET 23 OF 24)
TRANSFORMER
WDG # CONNECTION
TYPE
D/y330°/d0°
1
2
3
D/y330°/d120°
1
2
3
D/y330°/d180°
1
2
3
D/y330°/d300°
1
2
3
D/y330°/y150°
1
2
3
GE Multilin
Courtesy of NationalSwitchgear.com
VOLTAGE
PHASE
PHASORS
SHIFT
DELTA
0°
WYE
30° lag
(gnd 1/2)
330° lag
DELTA
0°
0°
DELTA
0°
WYE
30° lag
(gnd 1/2)
330° lag
DELTA
240° lag
120° lag
DELTA
0°
WYE
30° lag
(gnd 1/2)
330° lag
DELTA
180° lag
180° lag
DELTA
0°
WYE
30° lag
(gnd 1/2)
330° lag
DELTA
60° lag
300° lag
DELTA
0°
WYE
30° lag
(gnd 1/2)
330° lag
WYE
210° lag
(gnd 2/3)
150° lag
745 Transformer Management Relay
5.2 AUTO-CONFIGURATION
Table 5–1: TRANSFORMER TYPES (SHEET 24 OF 24)
TRANSFORMER
WDG # CONNECTION
TYPE
D/y330°/y330°
1
DELTA
2
WYE
(gnd 1/2)
330° lag
3
WYE
(gnd 2/3)
330° lag
Y/z30°/z30°
1
WYE
2
ZIG-ZAG
(gnd 1/2)
30° lag
3
ZIG-ZAG
(gnd 2/3)
30° lag
Y/y0°/y0°
1
WYE
2
WYE
(gnd 1/2)
0°
3
WYE
(gnd 2/3)
0°
VOLTAGE
PHASE
PHASORS
SHIFT
0°
30° lag
30° lag
30° lag
0°
0°
5
0°
0°
0°
5-21
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