IEC 61000-4-4 pdf download

IEC 61000-4-4 pdf download.Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement techniques – Electrical fast transient/burst immunity test
1 Scope
This part of IEC 61 000 relates to the immunity of electrical and electronic equipment to repetitive electrical fast transients. It gives immunity requirements and test procedures related to electrical fast transients/bursts. It additionally defines ranges of test levels and establishes test procedures. The object of this standard is to establish a common and reproducible reference in order to evaluate the immunity of electrical and electronic equipment when subjected to electrical fast transient/bursts on supply, signal, control and earth ports. The test method documented in this part of IEC 61 000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. NOTE As described in IEC Guide 1 07, this is a basic EMC publication for use by product committees of the IEC. As also stated in Guide 1 07, the IEC product committees are responsible for determining whether this immunity test standard is applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria. 1 The standard defines: – test voltage waveform; – range of test levels; – test equipment; – calibration and verification procedures of test equipment; – test setups; – test procedure. The standard gives specifications for laboratory and in situ tests.
3 Terms, definitions and abbreviations
3.1 Terms and definitions For the purposes of this document, the terms and definitions of IEC 60050-1 61 , as well as the following apply.NOTE Several of the most relevant terms and definitions from IEC 60050-1 61 are presented among the definitions below. 3.1 .1 auxiliary equipment AE equipment necessary to provide the equipment under test (EUT) with the signals required for normal operation and equipment to verify the performance of the EUT 3.1 .2 burst sequence of a limited number of distinct pulses or an oscillation of limited duration [SOURCE: IEC 60050-1 61 :1 990, 1 61 -02-07] 3.1 .3 calibration set of operations which establishes, by reference to standards, the relationship which exists, under specified conditions, between an indication and a result of a measurement Note 1 to entry: This term is based on the “uncertainty” approach. Note 2 to entry: The relationship between the indications and the results of measurement can be expressed, in principle, by a calibration diagram. [SOURCE: IEC 60050-31 1 :2001 , 31 1 -01 -09] 3.1 .4 coupling interaction between circuits, transferring energy from one circuit to another 3.1 .5 common mode (coupling) simultaneous coupling to all lines versus the ground reference plane 3.1 .6 coupling clamp device of defined dimensions and characteristics for common mode coupling of the disturbance signal to the circuit under test without any galvanic connection to it 3.1 .7 coupling network electrical circuit for the purpose of transferring energy from one circuit to another 3.1 .8 decoupling network electrical circuit for the purpose of preventing EFT voltage applied to the EUT from affecting other devices, equipment or systems which are not under test 3.1 .9 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]3.1 .1 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] 3.1 .1 2 EUT equipment under test 3.1 .1 3 ground reference plane GRP flat conductive surface whose potential is used as a common reference [SOURCE: IEC 60050-1 61 :1 990, 1 61 -04-36] 3.1 .1 4 immunity (to a disturbance) 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] 3.1 .1 5 port particular interface of the EUT with the external electromagnetic environment 3.1 .1 6 pulse width interval of time between the first and last instants at which the instantaneous value reaches 50 % value of the rising and falling edge of the pulse [SOURCE: IEC 60050-702:1 992, 702-03-04, modified]