AS IEC-61000-4-1-2017 pdf download.Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test.
This part of IEC 61000 relates to the immunity requirements, test methods, and range of recommended test levels for equipment with regard to unidirectional surges caused by over- voltages from switching and lightning transients. Several test levels are defined which relate to different environment and installation conditions. These requirements are developed for and are applicable to electrical and electronic equipment.
The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to surges. The test method documented in this part of lEG 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.
NOTE As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the lEG. As also stated in Guide 107, 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. TC 77 and its subcommittees are prepared to co•operate with product committees In the evaluation of the value of particular immunity test levels for their products.
This standard defines:
— a range of test levels;
— test equipment;
— test setups:
— test procedures.
The task of the described laboratory test is to find the reaction of the equipment under test (EUT) under specified operational conditions to surge voltages caused by switching and lightning effects.
It is not intended to test the caoability of the EUT’s insulation to withstand high-voltage stress. Direct injections of lightning currents, i.e. direct lightning strikes, are not considered in this standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050 (all parts), International Electro technical Vocabulary (1EV) (available at www.electrooedia.org)
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050 as well as the following apply.
3.1.1 avalanche device
diode, gas tube arrestor, or other component that is designed to break down and conduct at a specified voltage
3.1.2 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 60050-311:2001. 311-01-09]
3.1.3 clamping device
diode, varistor or other component that is designed to prevent an applied voltage from exceeding a specified value.AS IEC-61000-4-1 pdf download.