DSE Model 5320 Automatic Mains Failure & Instrumentation System Operators Manual
56 Part No. 057-014 5320 OPERATING MANUAL ISSUE 5.1 18/06/2007 ADM
14.1.2 1 PHASE, 2 WIRE
Single phase alternator with neutral conductor.
14.1.3 2 PHASE, 3 WIRE ( 2 PHASE CENTRE TAP NEUTRAL)
The alternator is 2 phase star connected. The live phases are separated by 180°