Generac Power Systems D2.5L G2 Installation Manuallines page 54

Alternator AC Lead Connections
(2 of 2)
Figure 7.4 — Stator Power Winding
Connections - 3-phase, 120/208V (6 Lead)
INTERNAL CONNECTIONS
S4
S6
S3
E3
S3
Figure 7.5 — Stator Power Winding
Connections - 3-phase, 120/208V (12 Lead)
S7
S10
S12
S9
E3
S3
Figure 7.6 — Stator Power Winding
Connections - 3-phase, 346/600V (6 Lead)
INTERNAL
CONNECTIONS
S3
E3
50
General Information
E1
S1 S1
L-L
S4
00 (NEUTRAL)
S5
S2
S6 S5
E2
S2
L-N
E1
S1
L-L
S4
S5
S2
S6 S11
E2
S8
L-N
E1
S1
L - L
S4
S6
00 (NEUTRAL)
S5
S2
E2
L - N
3-PHASE ALTERNATORS ("DELTA" CONFIGURATION)
The Stationary Emergency Generator is designed to supply
3-phase electrical loads. Electric power is produced in the alterna-
tor power windings. These windings were connected at the factory
to the main circuit breaker with a "Delta" configuration as shown
in Figures 7.7 and 7.8.
The rated voltage between circuit breaker terminals E1-E2, E1-E3
and E2-E3 is 240V.
The rated voltage between E2 and the neutral point 00 is 208V. The
rated voltage E1-00 and E3-00 is approximately 120V.
NOTE: The voltage measured from E2 to 00 can greatly vary when
single phase load is placed on alternator.
Figure 7.7 — Stator Power Winding
Connections - 3-phase, 120/240V (6 Lead)
Figure 7.8 — Stator Power Winding
Connections - 3-phase, 120/240V (12 Lead)
E2
S2 S12
S5
S8
S11
NB
E1
S1
7-2
Installation Guidelines for Protector Diesel Generators
S9
240 VAC
S6 240 VAC
208 VAC
S3
E3
S10
240 VAC
120 VAC
120 VAC