Recent content by stadimet

  1. S

    Where should the feedback of AVR be taken in a synchronous generator?

    Hi all, Where should the Feedback for an AVR be taken in a Synchronous Generator? This is a shipboard generator which has an Electronic Automatic AVR installed. The AVR takes its feedback (voltage) from the generator itself and not from the Switchboard Busbar to which the Generator wiring...
  2. S

    Why do ships mostly use 3 phase 3 wire systems?

    Hi all, I have the following doubts: [1] In the past 23 years of my service, I have only seen every ship being built in my yard with 3 Phase, 3 wire system with the neutral isolated. why is it that 3 phase 4 wire not used on a ship like in a land based power system? [2] Earlier we used...
  3. S

    Voltage Drop Between Generator and Main Switchboard on an Ocean Going Vessel

    [1] A new 1.2 MW, 415V, 50 Hz diesel generator has its voltage dropped between its TB and Main switchboard, by more than 6 V (415 down to 409 V) at 100% Resistive load (P.F=1.0). [2] The distance between the Generator and the MSB is 129 Mtrs. Single core cables of 1x240 sq mm - each 6 runs...