BS IEC 60533 pdf download

BS IEC 60533 pdf download.Electrical and electronic installations in ships – Electromagnetic compatibility (EMC) – Ships with a metallic hull
1 Scope
This International Standard specifies minimum requirements for emission, immunity and performance criteria regarding electromagnetic compatibility (EMC) of electrical and electronic equipment for ships with metallic hull. Additional or divergent requirements for ships with non- metallic hull will be given in a future International Standard (IEC 62742). This International Standard assists in meeting the relevant EMC requirements as stated in SOLAS 74, Chapter IV, Regulation 6 and Chapter V, Regulation 1 7. Reference to this International Standard is made in IMO Resolution A.81 3(1 9). The normative part of this International Standard has been prepared as a product family EMC standard. This International Standard further gives guidelines and recommendations on the measures to achieve EMC in the electrical and electronic installations of the following equipment groups: a) group A: maritime navigation and radio communication equipment and systems; b) group B: power generation and conversion equipment; c) group C: equipment operating with pulsed power; d) group D: switchgear and controlgear; e) group E: intercommunication and signal processing equipment and control systems; f) group F: non-electrical items and equipment; g) group G: integrated systems. The basic EMC standard for groups A and C is IEC 60945. The EMC requirements according to IEC 60945 apply additionally for • bridge mounted equipment; • equipment in close proximity to receiving antennas; • equipment capable of interfering with the safe navigation of the ship and with radio communication. Effects on humans, like exposure to electromagnetic fields, and basic safety requirements such as protection against electric shock and dielectric strength tests for equipment are not within the scope of this International Standard.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-1 61 and the following apply.3.1 electromagnetic compatibility EMC ability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -07) 3.2 electromagnetic influence effect of electromagnetic quantities on electrical and electronic circuits, equipment, systems or humans 3.3 electromagnetic interference EMI degradation of the performance of an equipment, transmission channel or system caused by an electromagnetic disturbance Note 1 to entry: In French, the terms “perturbation électromagnétique” and “brouillage électromagnétique” designate respectively the cause and the effect, and should not be used indiscriminately. Note 2 to entry: The English words “interference” and “disturbance” are often used indiscriminately. [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -06) 3.4 degradation <of performance> undesired departure in the operational performance of any device, equipment or system from its intended performance Note 1 to entry: The term “degradation” can apply to temporary or permanent failure. [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -1 9] 3.5 loss of function loss of function of a device beyond that permissible and where the function can be restored only by technical measures Note 1 to entry: A special case of loss of function is destruction. Note 2 to entry: Loss of function may be permanent or temporary: – technical measures to correct permanent loss require the use of tools or spare parts; – technical measures to correct temporary loss require simple operator actions such as resetting a computer or reswitching. 3.6 electromagnetic disturbance any electromagnetic phenomenon which may degrade the performance of a device, equipment or system, or adversely affect living or inert matter Note 1 to entry: An electromagnetic disturbance may be an electromagnetic noise, an unwanted signal or a change in the propagation medium itself.3.7 emitter <of electromagnetic disturbance> device, equipment or system which gives rise to voltages, currents or electromagnetic fields that can act as electromagnetic disturbance [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -23] 3.8 susceptible device device, equipment or system whose performance can be degraded by an electromagnetic disturbance [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -24] 3.9 emission electromagnetic emission phenomenon by which electromagnetic energy emanates from a source [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -08] 3.1 0 immunity ability of a device, equipment or system to perform without degradation in the presence of an electromagnetic disturbance [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -20]