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  1. Karmicpower

    Saturated Sub-transient reactance of a generator?

    We have a synchronous generator of ABB make. There are two values of Xd,Xd' and Xd" ; different vaues for saturated and unsaturated. Could you guys tell me what exactly is saturated and unsaturated for a synchronous generator?
  2. Karmicpower

    Unusual stopping of the generator

    Dear folks, I am a newbie here, so please don't mind if i am not that descriptive of the subject. Well, we have a 15 MVA synchronous (hydro) generator with 14 poles, rated speed of 428.6 rpm and moment of inertia of 12,000 kgm2. Recently, the machine tripped on some temperature fault and the...

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