115 VAC Bus Question
Recently had a situation where we had sequential failures of numerous seemingly unrelated components on our aircraft (B757). Fuel pumps, air data, equipment cooling, radar, signal generators, etc. Got the aircraft on the ground and maintenance found a 115 VAC bus breaker popped…….explanation it was one of the phase breakers (one of three breakers on a three phase system). Maintenance said this will sometime cause sequential failure of items on that bus as they overheat or become intolerant to operating in this condition.
I’m far from an Electrical Engineer….would someone expand on losing one phase in a three phase system?
Thanks in advance.