IEC 60092-101:2002 pdf free download

IEC 60092-101:2002 pdf free download
IEC 60092-101:2002 pdf free download.Electrical installations in ships
2.8.1 General
Unless otherwise stated in other parts of IEC 92, equipment shall function when supplied from general distribution systems with due regard to voltage and frequency variations, harmonic distortion and conducted disturbances. The characteristics of general distribution systems are given in the following subclauses.
NOTE 1 Where the power supply is obtained from the shore due regard should be paid to the effect that the quality of the supply, if different from that specified in this clause, may have on the performance of equipment.
NOTE 2 For systems where semiconductors are connected having a total system rating which is a significant portion of the total system rating, it may not be feasible to suppress the harmonics. Consideration should be given to take appropriate measures to attenuate these effects of the distribution system so that safe operation is assured. Care should be taken in selecting consumers supplied from an electric power supply system with a higher harmonic content than specified in this clause.
NOTE 3 Electrical equipment which requires a higher quality power supply may need additional provisions to be made locally. Where additional equipment is fitted to achieve this higher quality power supply it may be required to be duplicated and segregated to the same degree as the electrical equipment it supplies.
NOTE 4 Special attention should be paid to the installation of electrical equipment which may influence the quality of power supply on local basis or react with any harmonics present on the general distribution system.
NOTE 5 Variable frequency/voltage systems may be admissible provided safe operation of the system is assured and that equipment is suitably rated for the expected variations.
2.9 Electrical apparatus for explosive gas atmospheres
When an apparatus is required to be suitable for use in explosive gas atmospheres it shall be constructed in accordance with IEC 60079 and in accordance with annex A of IEC 60092-502, due account also being taken of its intended location on the vessel.
Such apparatus shall also be type tested, where required, in accordance with IEC 60079 and, where it is required to be of a certified safe type, the certification for use in the relevant atmosphere(s) is to be carried out by a recognized competent independent testing authority; however, pressurized equipment (type of protection P) may be accepted by inspection of the reference documents and by appropriate tests.