Home Forums General Discussion Technical Questions 70s DC Otis Geared machine, low generator output

Do everything on inspection and use Uor D and H for leveling field.

Thanks Rolly, I will check that.

Even with GSEF and GLF disconnected the generator is outputting 27v and almost stalling, brush holders get hot. I cant see how it can generate with no fields. Any ideas on this?

You cannot disconnect the series field from the GSEF. It is wound in the pole piece so the self excited field can build. If you listen and do what I told you can get all the fields in sync, The suicide circuit using the SUD relay could have an open resistor. Also on some controllers a breaking contact on H is used in suicide circuit, Does you generaror have taps on the pole pieces, or an extra series field wire coming out to controller. There is no 65 Generator, some dumb ass in the UK stamped it wrong. I had 4 controllers in the Bahamas from UK and I had never seen so many factory wiring mistakes. First time power was applied transformers smoked for touch buttons. Awful Quality. You will notice there is no way for the GSEF to get any external power to the field, it is done with induction via the leveling field to get the build up started. Also all the speed steps pull in all at once,

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