DNV DNV TAP NO. MR-E006 PDF

General description of the product

Fuses are over current protective devices that contain a calibrated current carrying element which melts and opens under specified over current conditions. Fuses are individual devices and can have different shapes. Connection to a circuit is normally carried out through the use of single or multi fuse bases or fuse holders, as required. Fuses are to be classified according to applicable parts of IEC standards 60269-1, IEC 60269-2, IEC 60068-2 and IEC 60721-3, as applicable.

Application limitations

Fuses are to be used in low voltage (<1000V for AC systems and <1500V for DC systems) electrical installations of ships classed for unrestricted navigation and, designed, constructed and tested to operate satisfactorily under the worst environmental conditions, found on board, for each application case. These technical requirements do not apply to fuses used for the protection of internal circuitry, normally located inside of cabinets or enclosures such as semiconductor power converters, specific motor controllers, battery chargers and similar equipments. In the same way, fuse-bases or fuse-holders are not covered by this document.