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IEC 60255-22-3 Document Information:
Title
Measuring relays and protection equipment – Part 22-3: Electrical disturbance tests – Radiated electromagnetic field immunity
Relais de mesure et dispositifs de protection – Partie 22-3: Essais d’influence électrique – Immunité aux champs électromagnétiques rayonnés
International Electrotechnical Commission
Publication Date:
Jul 1, 2007
Scope:
This part of IEC 60255 is based on IEC 61000-4-3, referring to that publication where applicable, and specifies the general requirements for radiated electromagnetic field disturbance tests for measuring relays and protection equipment for power system protection, including the control, monitoring and process interface equipment used with those systems.
The objective of the tests is to confirm that the EUT (equipment under test) will operate correctly when energised and subjected to an electromagnetic field from a radiation source operating within the frequency range 80 MHz to 1 000 MHz.
NOTE 1 The product standard IEC 60255-22-6 (based on IEC 61000-4-6) establishes the immunity of measuring relays and protection equipment over the frequency range of 0,15 MHz to 80 MHz. Also, amendment 1 (subclause 5.2) to IEC 61000-4-3 proposes to include frequencies up to 2 GHz to test for immunity against devices such as portable digital telephones.
NOTE 2 The test methods defined in this standard are structured for the primary objective of establishing adequate repeatability of results at various test facilities for qualitative analysis of effects. The test methods using a portable transmitter* are not taken into consideration here because the EMC directive now specifies a sweep test, calibrated field strengths must be used and the portable transmitter test is not generally reproducible.
The requirements specified in this standard are applicable to measuring relays and protection equipment in an unused condition, and all tests specified are type tests only.
* (specified in the first edition (1989) of this standard)
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