No-break power system
A power system that ensures that there is no harmful fluctuation in the electric supply to equipment, in the event of any failure in the regular supply.
Note: Maintenance of the supply following an important failure may require subsequent change-over to an emergency supply; the no-break power system eliminates harmful fluctuations during change-over.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM