Volume 3 nr 1 / 2011 - Academia Oamenilor de Stiinta din Romania

124 Alexandru Ionuț Chiuță, Liviu Mihai Sima, Nicoleta Doriana Secăreanu2. General electromagnetic compatibility2.1. DefinitionsELECTROMAGNETIC COMPATIBILITY is the condition in which the level ofimmunity to disturbances of any device on the system is higher than the level ofdisturbances to which the device is subjected in the system. Concept ofelectromagnetic compatibility refers to the system in which the device is used (TVmonitor, TV room, TV cable), a device having the ability to be compatible in onesystem but not necessarily in another.COMPATIBILITY LEVEL is the level of disturbance, less than or equal to theimmunity of any undisturbed device in the system but equal to or greater than thedisturbance level generated by the system disrupters.NOMINAL COMPATIBILITY LEVEL is the estimated one under nominalconditions, with acceptable variations, e.g.: frequency, voltage and load.CRITICAL LEVEL OF COMPATIBILITY is the level of the best advantageousconditions. It should be considered in emergency or rare events, in which case theprotection and safety measures should be taken and enforced to prevent: humancasualties, scraping, interruption of work and damage to equipment.ELECTRIC IMMUNITY LEVEL of a device is defined as the maximum amountof disturbance that can be applied to, without losing its performance. The degreesof severity are:- functional immunity level;- failure immunity level;- damage immunity level.COMPATIBILITY MARGIN is defined as:- difference in decibels between the level of immunity to disturbance of thedevice or system and level of disturbance to which it is subjected. Compatibility isthe case of system or subsystem in which the margin in dB is positive;- ratio between the level of immunity to disturbance of the device or systemand level of disturbance to which it is subjected. Compatibility is the case ofsystem or subsystem in which the ratio is bigger than 1.INTERFERENCE lies in the effects due to disturbances, incompatible withachieving the performances required.SUSCEPTIBILITY is the capacity of a device, apparatus or system with thatresponds to the unwanted energy of disturbances.Copyright © Editura Academiei Oamenilor de Știință din România, 2011Watermark Protected