EFFECTS OF NO-BREAK POWER TRANSFER ON 400 HZ AUXILIARY-POWER UNITS AND GROUND-POWER UNITS(Cancelled )
AIR4651
This SAE Aerospace Information Report (AIR) describes the characteristics and effects of using no-break power transfer (NBPT) methods when switching between auxiliary-power unit (APU) and ground-power unit (GPU). The GPU may be:
a
Point-of-use solid-state frequency converter, engine-generator, or motor-generator
b
Central system powered by motor-generator or solid-state frequency converter