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  1. AZElectrical

    Field breaker tripping philosophy

    I have a project going on to replace the static excitation systems on four small pump/generators. The current scheme for tripping the DC field breaker has a few different modes: [ol 1] For a split-phase differential trip, an opened excitation AC breaker, or opened PPT HV disconnect, the field...
  2. AZElectrical

    Synchronous motor field application timing

    I have been going through old product data on a 5,500hp synchronous motor with a brushless exciter as part of an upcoming modernization project. The manual states that the optimum angle for field application occurs when the current induced in the field discharge resistor moves through a...

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