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  • Users: mns15451
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  1. mns15451

    Need practicle experience regarding the subject.

    What is the crieteria of performing the DC Leakage Test on the stator or rotor of 13.8 Kv, 100 Mva generator that has run over 100,000 hrs? Why it is considered harmful for the winding insulation? If we don't perform this test or Hipot test then how we can evaluate the condition of insulation of...
  2. mns15451

    Limits on MVAR out of older generators

    Is there any limits or change in the capability (curve) of the older generators. In other words is there any limit for the MVAR output of the generators. If so, what is the correction factor to find out the new Limits of the MVAR.
  3. mns15451

    How the load will be p.u by gen. set to different speed droop control

    If number of gas-turbine generating units having same capacity but set to different speed droop setting i.e. 4% and 5% are running and connected to large system. Upon sudden demand of load (due to the tripping of larger unit on the system) how the load will be picked up on these units keeping in...
  4. mns15451

    Replacement of 3-windins power transformers having dfferent impedence

    Is it technically possible to replace a 3-windings power transformer (2-primary LV & 1-secondary HV) 200 MVA, 13.8/13.8/132 Kv, 5.6% impedence with identical rating transformer having 11.4% impedene.

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