OP
dangier_VA
Silver Member
BobRip-"If the two generators are in phase (0 degrees) then the voltages track each other. i.e. they are both positive at the same time and both negative at the times time. If you put these generators in series and they are at 0 degrees then the voltage between the two will read zero since they are at the same volts. This is like taking two D cell batteries and put the negatives together. If they are both new, then you will read very close to zero volts between the two positive terminals. What you want is 180 degrees out of phase. So when one is negative then the other is positive. This way the voltages add and you get 240 volts between the two hot legs of the generator. This is like two D cell batteries with the negative of one connected to the positive of the other. The unconnected terminals will have about 3 volts between them."
My thoughts exactly. That is why I was concerned about the armatures being "right on" each other. They are either 180 degrees from each other or 0 degrees at this point. When it was running yesterday, it was producing the high voltages under a 5000 watt load at 60 Cycles. I think I need to assume that they are at 180 degrees since they were generating power for the 250 volt load. Otherwise they would not support the load. When I get the bearings right, I plan to have the unit "scoped" to verify the sine wave. I stopped at the 5000 watt load as my old 2n would not carry the next 5000 watt load bank. I have an old heat pump indoor unit with three switchable 5000 watt heating coils and fan used for load testing and emergency heat if needed.
David
My thoughts exactly. That is why I was concerned about the armatures being "right on" each other. They are either 180 degrees from each other or 0 degrees at this point. When it was running yesterday, it was producing the high voltages under a 5000 watt load at 60 Cycles. I think I need to assume that they are at 180 degrees since they were generating power for the 250 volt load. Otherwise they would not support the load. When I get the bearings right, I plan to have the unit "scoped" to verify the sine wave. I stopped at the 5000 watt load as my old 2n would not carry the next 5000 watt load bank. I have an old heat pump indoor unit with three switchable 5000 watt heating coils and fan used for load testing and emergency heat if needed.
David