TP-5977 7/98 19
Generator Reconnection
5.1.2 12-Lead (3-Phase)
Generator Sets
NOTE
Generator sets equipped with controllers with meters
have current transformers (CTs).
NOTE
Position current transformers CT1, CT2, and CT3 with
dot or HI side toward generator set.
Three-phase,12-lead generatorsetsarereconnectable
to the voltages and phases shown in Figure 5-4. If the
generatorsetisreconnected to obtain a differentoutput
voltage, voltage regulator adjustments may be
necessary to obtain desired voltage.
CT1
L1
7
10
12
9
11
8
CT2
L2
5
2
3
6
L0
1
4
60 HZ - 120/240V.- 1PH. 3 WIRE
50 HZ - 110/220V.- 1 PH. 3 WIRE
USED ON GENERATORS 20-100 KW ONLY
L3
CT3
3
6
L0
10
7
L1
CT3 NOT USED
TB2
METER SCALE LAMP
JUMPER
60 HZ - 120/240V. - 3PH. 4 WIRE DELTA
50 HZ - 110/220V. - 3PH. 4 WIRE DELTA
L2
CT2
8
11
2
5
CT3
L3L1
CT1
6 3 12 9
7
10
1
4
TB2 UP V7 LO
METER SCALE LAMP
JUMPER
60 HZ - 120/240V. OR 120/208V. - 3 PH. 4 WIRE LOW WYE
50 HZ - 120/208V. OR 110/190V. - 3 PH. 4 WIRE LOW WYE
UP V7 LO
TB2 UP V7 LO
METER SCALE LAMP
JUMPER
1
4
11
8
CT2
L2
2
5
9
12
CT1
60 HZ - 277/480V. - 3 PH. 3 WIRE HIGH WYE
50 HZ - 220/380V. - 3 PH. 4 WIRE HIGH WYE
L1
L2
1
4
5
2
7
10 11
8
L0
12
9
CT3
6
3
L3
CT1
CT2
TB2 UP V7 LO
METER SCALE LAMP
JUMPER
L0
584788
Figure 5-4. 12-Lead Generator Reconnection