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BS EN 60092-507 Ed.4.0 Electrical installations in ships. Part 507: Small vessels

Source:
IEC
Committee:
JPEL/18 - Electrical installations of ships and of mobile and fixed offshore units
Categories:
Ships and marine structures. Electrical equipment | Small craft
Comment period start date:
Comment period end date:
Number of comments:
0

Comment by:

Scope

This part of IEC 60092 specifies requirements for the design, construction and installation of electrical systems in small vessels, which have a length of up to 50 m, or which have a gross tonnage not exceeding 500 Gross Tonnes (GT), main power sources not exceeding 3 MW, designed for use on inland waters or at sea. It is not intended to apply to small craft equipped only with a battery supplying circuits for engine starting and navigation lighting recharged from an inboard or outboard engine driven alternator.

This standard applies to the types of DC and AC electrical systems described below, individually or in combination.

a)      Direct current system which operates at a nominal voltage not exceeding DC 50 V. For many small vessels, this will be the main electrical system supported by batteries for engine starting, navigation lights, navigational aids and communications equipment, lighting and other DC power consumer or converter equipment.

b)      Single-phase alternating current system which operates at a nominal voltage not exceeding AC 250 V. Such a system may be the principal electrical power system of a vessel or a system which may only be energized when connected to a shore supply. AC extra-low voltage, safety extra-low voltage, and other circuits may also comprise part of a single-phase AC system. A vessel may also be equipped with DC system(s) for equipment supplied from batteries as in 1.2 a) above.

c)       Three-phase alternating current system which operates at a nominal voltage not exceeding AC 1000 V. The three-phase system is likely to be the principal electrical power system of a vessel’s electrical installation. Such a vessel may also be equipped with single-phase AC circuits(s) similar to 1.2 b) above and DC system(s) for equipment supplied from batteries as in 1.2 a) above.

NOTE 1 Concerning recreational craft of less than 24 m hull length referenced in 1.1 b) above, the following standards apply:

–         for direct current installations which operate at a nominal voltage not exceeding DC 50 V: ISO 10133;

–         for single-phase alternating current installations which operate at a nominal voltage not exceeding AC 250 V single phase: ISO 13297.

NOTE 2 For alternating current systems having voltages exceeding AC 250 V single-phase or AC 500 V three-phase, for direct current systems exceeding DC 50 V, for vessels larger than 500 GT or with a length greater than 50 m,and for electric propulsion systems exceeding 3 MW, other standards within the IEC 60092 series apply.

NOTE 3 Attention is drawn to regulations which govern specific requirements for navigation lights for small vessels.

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