Describes the design features and subsequent operational experience of a class of ships which has been installed with a 3.3 kV generation and distribution system. The system is considered to be unique in the marine field in that it perpetuates the medium voltage system practice and operates with an insulated neutral. The aspect of excessive voltage stresses, said to exist with this type of installation, due to intermittent earth faults caused by the system capacitance, is examined. Details of measurements which have been made to quantify the capacitance values are given. Large power transformers are necessary which, when operating from a limited supply cause difficult switch-on transient conditions. The phenomenon and the influence exerted on the system operation is examined. Features leading to reliability, operating flexibility and facilities for safety of personnel are other matters which are discussed.

  • Availability:
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Adams, E M
    • Ellwood, E
  • Publication Date: 1974

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00084593
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Series A
  • Files: TRIS
  • Created Date: May 19 1975 12:00AM